USMLE GO Basic

1) A 29-year-old Caucasian primigravida patient is 20 weeks pregnant with twins. She found out today on her routine ultrasound for fetal anatomy that she is carrying two boys. In this patient’s case, which of the following statements about twinning is true?

2) A 24-year-old primigravida with twins presents for routine ultrasonography at 20 weeks gestation. Based on the ultrasound findings, the patient is diagnosed with dizygotic twins. Which of the following is true regarding the membranes and placentas of dizygotic twins?

3) After delivery of a term infant with Apgar scores of 2 at 1 minute and 7 at 5 minutes, you ask that umbilical cord blood be collected for pH. The umbilical arteries carry which of the following?

4) During the routine examination of the umbilical cord and placenta after a spontaneous vaginal delivery, you notice that the baby had only one umbilical artery. Which of the following is true regarding the finding of a single umbilical artery?

5) A 22-year-old G1P0 at 28 weeks gestation by LMP presents to labor and delivery complaining of decreased fetal movement. She has had no prenatal care. On the fetal monitor there are no contractions. The fetal heart rate is 150 beats per minute and reactive. There are no decelerations in the fetal heart tracing. An ultrasound is performed in the radiology department and shows a 28-week fetus with normal-appearing anatomy and size consistent with dates. The placenta is implanted on the posterior uterine wall and its margin is well away from the cervix. A succenturiate lobe of the placenta is seen implanted low on the anterior wall of the uterus. Doppler flow studies indicate a blood vessel is traversing the cervix connecting the two lobes. This patient is most at risk for which of the following?

6) A 27-year-old woman has used oral contraceptives (OCs) without problems for 5 years. However, she just read an article about complications of OCs in a popular women’s magazine and asks you about the risks and hazards of taking OCs. You correctly tell her which of the following?

7) In an amenorrheic patient who has had pituitary ablation for a craniopharyngioma, which of the following regimens is most likely to result in an ovulatory cycle?

8) A 35-year-old African American woman presents to a physician complaining of irregular menstrual periods. She had her first menses at age 15 and states that her periods come irregularly every 2 to 6 months. She has been in a monogamous relationship with her husband for 15 years; for 10 years they have been trying unsuccessfully to conceive. She gets yearly Pap smears, which have been normal. Her height is 5 feet 2 inches (157.5 cm), and her weight is 200 pounds (90.9 kg). Her temperature is 37 C (98.6 F), blood pressure is 118/78 mm Hg, pulse is 80/min, and respirations are 14/min. She has acne, as well as excess hair, on her face and between her breasts. Her abdomen is obese. Examination is otherwise within normal limits. This patient is at greatest risk for developing which of the following diseases?

9) An ovarian mass removed from a 49-year-old female has yellow coloration of its cut surface. The pathologist describes it as a granulosa-theca cell tumor. Based on this pathology report, the tumor is most likely to secrete?

10) A 38-year-old Caucasian female presents to your office complaining of a small amount of vaginal discharge that appears following sexual intercourse. There is no associated abdominal pain or urinary symptoms. Her menstrual cycles occur with regular 28-day cycles; her last menstrual period was 2 weeks ago. She has never been pregnant. Menarche occurred at age 10, and she has been sexually active with 10 different partners over the last 20 years. She smokes two packs of cigarettes per day and consumes alcohol regularly. She admits that her diet is poor in vegetables and fruit. Her mother died of breast cancer at age 54, and her father, who is living, has hypertension. Cervical biopsy reveals cervical intraepithelial neoplasia III (CIN III). Which of the following is the strongest risk factor for this condition?

11) A 19-year-old woman comes to the physician because of irregular vaginal bleeding. She has asthma and has never had surgery. She takes albuterol for her asthma and has been taking the oral contraceptive pill for 2 years. She has no allergies to medications. On examination she is found to have a vaginal lesion, which is biopsied. The biopsy shows clear cell adenocarcinoma of the vagina. This patient's malignancy is most likely associated with which of the following types of exposure?

12) A 60-year-old postmenopausal woman presents with the new onset of uterine bleeding. An endometrial biopsy is diagnosed as atypical hyperplasia. Which of the following histologic changes is most characteristic of this abnormality?

13) Prolonged unopposed estrogen stimulation in an adult woman increases the risk of development of endometrial hyperplasia and subsequent carcinoma. Which of the following is the most common histologic appearance for this type of cancer?

14) A 46-year-old woman undergoes an abdominal hysterectomy for a “fibroid” uterus. The surgeon requests a frozen section on the tumor, which is deferred because of the lesion’s degree of cellularity. Which of the following histologic criteria will be used by the pathologist to determine if this tumor is benign or malignant?

15) A 25-year-old woman presents to your office complaining of a seven-week history of amenorrhea. She also states that she has had nausea and vomiting for five weeks. She is sexually active. Her medical and obstetrical histories are unremarkable. Serum hCG level is elevated. Which of the following is the most important direct role of hCG in pregnancy?

16) After reading an article titled: ''The Risk of Cancer in Patients with Diethylstilbestrol (DES) Exposed Mothers", a 23-year old female comes to your office with her mother for assessment of possible risks. Her mother had been given DES while pregnant. Which of the following cancers is this patient most at risk of developing?

17) A 32-year-old woman who presents with menometrorrhagia is found to have a 4.0-cm mass within her left ovary. This mass is resected surgically and a histologic section reveals the tumor to be composed of small polygonal cells growing sheets and anastomosing cords. Rare Call-Exner bodies are present. The tumor cells are found to stain positively with an immunoperoxidase stain against inhibin. Which one of the following is most likely to be secreted by these tumor cells?

18) A 28-year-old nulliparous woman presents to your office complaining of fatigue, low mood, and amenorrhea. She says that it all started two months ago and progressively worsened. She is sexually active and uses condoms for contraception. Her medical history is unremarkable, and she denies taking any drugs or medications. Examination reveals dry skin, short eyebrows, a painless and enlarged thyroid gland, and galactorrhea. The uterus has a normal size, and the adnexae are not palpable. Initial investigations reveal the following: Serum pregnancy test: Negative; Free T4: 2.5 µg/dL (N= 5- 12); SerumTSH: 11.0 µU/ml (N= 0.5-5.0); Prolactin: 30 ng/ml (< 20 ng/ml); Antimicrosomal antibodies: Positive. Of the following, which represents the association between hypothyroidism and hyperprolactinemia in the above patient?

19) A 39-year-old woman presents with increasing abdominal distention and pelvic pain. A CT scan finds a slight amount of fluid in the pleural cavity and also a 3.5cm tumor of the right ovary. The tumor is resected and histologic sections reveal the tumor to be composed of spindle-shaped cells. These cells did not stain with an oil red O special stain. Which of the following types of ovarian tumor is most likely to produce this constellation of findings?

20) During the evaluation of secondary amenorrhea in a 24-year-old woman, hyperprolactinemia is diagnosed. Which of the following conditions could cause increased circulating prolactin concentration and amenorrhea in this patient?

21) A 36-year-old morbidly obese woman presents to your office for evaluation of irregular, heavy menses. An office endometrial biopsy shows complex hyperplasia of the endometrium without atypia. The hyperplasia is most likely related to the excess formation in the patient’s adipose tissue of which of the following hormones?

22) A 29-year-old woman, gravida 2, para 0, comes for a routine prenatal visit. According to her history, she is at 16-weeks gestation. She had a first trimester miscarriage during her previous pregnancy. She does not take any vitamin supplementation. Vital signs are stable and physical examination is unremarkable. Initial laboratory studies show increased maternal serum alpha-fetoprotein (MSAFP) levels. Which of the following is the most likely cause of the abnormal laboratory finding?

23) A 39-year-old patient is contemplating discontinuing birth control pills in order to conceive. She is concerned about her fertility at this age, and inquires about when she can anticipate resumption of normal menses. You counsel her that by 3 months after discontinuation of birth control pills, what proportion of patients will resume normal menses?

24) A 32-year-old woman presents to your office to discuss contraception. She has recently stopped breast-feeding her 8-month-old son and wants to stop her progestin-only pill because her cycles are irregular on it. You recommend a combination pill to help regulate her cycle. You also mention that with estrogen added, the contraceptive efficacy is also higher. In combination birth control pills, which of the following is the primary contraceptive effect of the estrogenic component?

25) A 22-year-old woman presents to your office for her well-woman examination and contraception. She has no medical problems or prior surgeries. She does not smoke or drink. Her vital signs and physical examination are normal. You explain the risks and benefits of combination oral contraceptive pills to the patient. She wants to know how they will keep her from getting pregnant. Which of the following mechanisms best explains the contraceptive effect of birth control pills that contain both synthetic estrogen and progestin?

26) Five patients present for contraceptive counseling, each requesting that an IUD be inserted. Which of the following is a recognized contraindication to the insertion of an IUD?

27) A 30-year-old woman presents to your office for her well-woman examination and contraception. She has two prior vaginal deliveries without any complications. Her medical and surgical histories are negative. Her family history is significant for coronary heart disease in her father and breast cancer in her mother diagnosed at the age of 62 years. In addition to effective contraception, health benefits for women taking oral combination contraceptives include which of the following?

28) A couple presents to your office to discuss permanent sterilization. They have three children and are sure they do not want any more. You discuss the risk and benefits of surgical sterilization. Which of the following statements is true regarding surgical sterilizations?

29) A 32-year-old woman, gravida 3, para 2, at 37 weeks' gestation comes to the physician for a prenatal visit. She has no current complaints. Her past medical history is significant for hepatitis C infection, which she acquired through a needle stick injury at work as a nurse. She is hepatitis B and HIV negative. She takes no medications and has no allergies to medications. Her prenatal course has been uncomplicated. She wants to know whether she can have contact with the baby or breast-feed given her hepatitis C status. Which of the following is the correct response?

30) The shortest distance between the sacral promontory and the symphysis pubis is called which of the following?

31) A patient presents in labor at term. Clinical pelvimetry is performed. She has an oval-shaped pelvis with the anteroposterior diameter at the pelvic inlet greater than the transverse diameter. The baby is occiput posterior. The patient most likely has what kind of pelvis?

32) On pelvic examination of a patient in labor at 34 weeks, the patient is noted to be 6 cm dilated, completely effaced with the fetal nose and mouth palpable. The chin is pointing toward the maternal left hip. This is an example of which of the following?

33) A 34-year-old primigravida develops severe postpartum bleeding requiring aggressive volume resuscitation and transfusion of 5 units of packed red blood cells. Her pregnancy was complicated by mild hypertension and trace proteinuria that was treated with low-dose methyldopa. Her mother suffered from premature menopause and severe osteoporosis. Seven days after giving birth, she has failed to lactate. Her urinalysis is insignificant and her blood pressure has ranged from 95 to110 mmHg systolic and 69 to 75 mmHg diastolic. Fundoscopy shows no retinal changes. Which of the following is most likely deficient in this patient?

34) A 28-year-old nulliparous woman is being evaluated for infertility. She has no other medical problems. Pelvic examination reveals abundant mucus and a clear cervical secretion, which when lifted vertically extends in a long thread; pH is 6.5. This visit took place at which of the following phases of the menstrual cycle?

35) A 32-year-old poorly controlled diabetic G2P1 is undergoing amniocentesis at 38 weeks for fetal lung maturity prior to having a repeat cesarean section. Which of the following laboratory tests results on the amniotic fluid would best indicate that the fetal lungs are mature?

36) A wealthy executive donates five million dollars for the prevention of intrauterine growth restriction in the local county. Spending this money on which of the following programs would prevent the greatest number of cases of fetal growth restriction (FGR) in the population?

37) Your patient is a healthy 28-year-old G2P1001 at 20 weeks gestational age. Two years ago, she vaginally delivered at term a healthy baby boy weighing 6 lb 8 oz. This pregnancy, she had a prepregnancy weight of 130 lb. She is 5ft 4 in tall. She now weighs 140 lb and is extremely nervous that she is gaining too much weight. She is worried that the baby will be too big and require her to have a cesarean section. What is the best counsel for this patient?

38) A 28-year-old woman at 39 weeks gestation is admitted to the hospital. She has regular uterine contractions. Her blood pressure is 120/70mmHg, pulse is 80/min and respirations are 18/min. Fetal heart monitoring is placed and shows a baseline rate of 130 beats/min, without any associated abnormalities. Pelvic examination shows the cervix is 50% effaced and 3 cm dilated. Amniotomy is performed. Immediately after the rupture of membranes, the baseline fetal heart rate increases to 160 beats/min and then drops to 70 beats/min with repetitive late decelerations. There is severe acute vaginal bleeding. Repeat vital signs of the patient shows a blood pressure of 130/70mmHg, pulse of 80/min and respirations of 18/min. Which of the following is the most likely cause of the current condition?

39) A 62-year-old postmenopausal woman was found to have right adnexal enlargement on pelvic examination 2 weeks ago. Transabdominal and transvaginal ultrasounds revealed a 5-cm, unilocular, right ovarian mass with regular borders. There is no ascites. The patient went through menopause at age 52. She has had no postmenopausal spotting. There is no family history of ovarian or breast cancer. Her latest mammogram 2 months ago showed no abnormalities. Which of the following is the most appropriate course of action?

40) A 28-year-old nulliparous woman is being evaluated for infertility. She has no other medical problems. Pelvic examination reveals abundant mucous and a clear cervical secretion, which when lifted vertically extends in a long thread; pH is 6.5. This visit took place at which of the following phases of the menstrual cycle?

41) A 21-year-old nulligravid woman comes to her physician to discuss birth control options. She became sexually active for the first time 2 weeks ago. She is currently using condoms for contraception. Her past medical history is significant for asthma, which has been inactive for 2 years. She takes no medications and has no allergies to medications. She has no family history of cancer. Her examination is within normal limits. After a discussion with the physician, she chooses to take the oral contraceptive pill (OCP). She stays on the pill for the next 6 years. She now has most significantly decreased her risk of developing which of the following malignancies?

42) A 33-year-old, gravida 3, para 3 woman comes to the physician because of amenorrhea of 9-month duration. She denies symptoms of any kind. She had a tubal ligation after the birth of her last child 2 years ago. She did not breast feed. Her menarche was at the age of 13 years, and her menses were regular until 18 months ago. At that time, her menses skipped every other month, and then they stopped. She currently takes no medication. She weighs 120.2 kg (264lb) and is 160 cm (5'3") tall. Initial physical examination shows no abnormalities except for morbid obesity. In the initial blood work, serum TSH and prolactin levels are within normal limits. Follow-up laboratory test show: FSH 20 mIU/mL (normal: 5-30 mIU/mL), LH 15 mIU/mL (normal: 5-20 mIU/mL). Which of the following is the most likely explanation for this patient's amenorrhea?

43) An 18-year-old G2P1001 with the first day of her last menstrual period of May 7 presents for her first OB visit at 10 weeks. What is this patient’s estimated date of delivery?

44) A 45-year-old white female has undergone a right mastectomy for a node-negative, estrogen and progesterone receptor-positive tumor. She is scheduled to begin adjuvant therapy with tamoxifen. Her menstrual cycles are regular and her last menstrual period was 15 days ago. She has many concerns about tamoxifen therapy and would like to know its risks and benefits. Which of the following is she at risk for?

45) A 14-year-old girl s brought to the physician's office because of irregular menstrual periods. She had her menarche at age 13, and since then her periods have been irregular with the cycles varying from 3 to 6 weeks. She has no other symptoms. Physical examination is unremarkable. She has age appropriate secondary sexual characters. A urine pregnancy test is negative. Serum prolactin and thyroid stimulating hormone levels are normal. Administration of micronized oral progesterone results in withdrawal bleeding in 3 days. Which of the following most likely explains her irregular periods?

46) A 26-year-old woman comes to the physician for follow-up after a recent spontaneous abortion at 14 weeks gestation. She had one other spontaneous first trimester abortion two years ago. She has no other medical problems and does not use tobacco, alcohol or drugs. Review of systems reveals photosensitivity and occasional hematuria. On examination, you observe a bilateral malar rash. What is the most likely pathophysiology for her abortions?

47) A 27-year-old woman, gravida 2, para 1, at 20 weeks' gestation comes to the physician for a prenatal visit. She has no complaints. Her obstetric history is significant for a primary low transverse cesarean delivery because of a non-reassuring fetal tracing 3 years ago. She has no medical problems. She takes prenatal vitamins and has no known drug allergies. She is debating whether to have an elective repeat cesarean delivery or to attempt a vaginal birth after cesarean (VBAC). She wants to know her chances for a successful VBAC. Which of the following most accurately represents the patient's likelihood of having a successful vaginal delivery?

48) A 29-year-old patient comes to the physician for an annual examination. She has normal menstrual periods every 30 days. She was 15 years old when she first began having intercourse. She uses condoms for contraception. Her past medical history is significant for multiple sclerosis. This condition has required her to use a wheelchair for the past 4 years, which makes pelvic examination somewhat difficult for her. She smokes one pack of cigarettes per day. Given her difficulty with the pelvic examination, she inquires as to how often she needs to have a Pap smear performed. Which of the following is the correct answer?

49) A 33-year-old woman comes to the physician for her first prenatal visit. Her last menstrual period was 7 weeks ago. She has had no bleeding or abdominal pain. She has no medical problems and takes no medications. She has no family history of congenital anomalies. Her husband is 55 years old. He is in good health and also has no family history of birth defects. The patient is concerned that her husband's age may place their fetus at increased risk of a chromosomal anomaly. She wishes to know the paternal age above which amniocentesis or chorionic villus sampling should be considered. Which of the following is the correct response?

50) A 44-year-old woman, gravida 4, para 3, at 8 weeks' gestation comes to the physician for her first prenatal visit. She has mild nausea and vomiting but no other complaints. Her obstetric history is significant for three full-term, normal vaginal deliveries of normal infants. She has no medical or surgical history and takes no medications. Physical examination reveals an 8-week-sized uterus, but is otherwise unremarkable. She wishes to have chromosomal testing of the fetus and wants to have chorionic villus sampling performed, as she did with her last pregnancy. Compared with amniocentesis, chorionic villus sampling may place the patient at greater risk for which of the following?

51) A maternal fetal medicine specialist is consulted and performs an in-depth sonogram on a 30-yearold G1 at 28 weeks with a twin gestation. The sonogram indicates that the fetuses are both male, and the placenta appears to be diamniotic and monochorionic. Twin B is noted to have oligohydramnios and to be much smaller than twin A. Which of the following would be a finding most likely associated with twin A?

52) A 40-year-old G2P1001 presents to your office for a routine OB visit at 30 weeks gestational age. Her first pregnancy was delivered 10 years ago and was uncomplicated. She had a normal vaginal delivery at 40 weeks and the baby weighed 7 lb. During this present pregnancy, she has not had any complications, and she reports no significant medical history. She is a nonsmoker and has gained about 25 lb to date. Despite being of advanced maternal age, she declined any screening or diagnostic testing for Down syndrome. Her blood pressure range has been 100 to 120/60 to 70. During her examination, you note that her fundal height measures only 25 cm. Which of the following is a likely explanation for this patient’s decreased fundal height?

53) A 38-year-old G4P3 at 33 weeks gestation is noted to have a fundal height of 29 cm on routine obstetrical visit. An ultrasound is performed by the maternal-fetal medicine specialist. The estimated fetal weight is determined to be in the fifth percentile for the estimated gestational age. The biparietal diameter and abdominal circumference are concordant in size. Which of the following is associated with symmetric growth restriction?

54) A 37-year-old G4P2 presents to your office for new OB visit at 8 weeks. In a prior pregnancy, the fetus had multiple congenital anomalies consistent with trisomy 18, and the baby died shortly after birth. The mother is worried that the current pregnancy will end the same way, and she wants testing performed to see whether this baby is affected. Which of the following can be used for chromosome analysis of the fetus?

55) A 21-year-old G0 woman presents for a well-woman examination. Menarche began at age 12 years, and her periods occur every 26–30 days and last 4–5 days. She has had two sexual partners since becoming sexually active last year. She uses condoms for contraception and denies a history of sexually transmitted disease. Her physical examination is within normal limits. She has never had a pelvic exam before, and asks why it is necessary for her to get a Pap smear. Which of the following statements about cervical cancer screening is true?

56) During routine breast examination of a 28-year-old woman with no significant family or past medical history, a firm 2-cm mass is detected in the patient’s right breast. It is freely mobile and non-tender. Ultrasound reveals a solid, well-circumscribed mass, which is later found to be benign by biopsy. Which of the following statements is true?

57) Labor and vaginal delivery occur successfully in a 29-year-old woman after administration of oxytocin (Pitocin) for 9 hours. Spontaneous onset of labor at term is the result of which of the following?

58) A 28-year-old woman with 28-day menstrual cycle is attempting to conceive and is considering the use of a home ovulation predictor kit to time intercourse at ovulation. She asks you what day of her menstrual cycle her luteinizing hormone (LH) peak is most likely to occur. What should you tell her?

59) An 11-year-old girl has her first menses. Both ovaries contain approximately how many oocytes?

60) A healthy 29-year-old gravida 2 woman at 39 weeks has been in labor for 3 hours. She had a positive vaginal-anal culture for GBS at 37 weeks’ gestation. Which one of the following statements is correct?

61) A 17-year-old woman, gravida 1, para 0, at 38 weeks' gestation comes to the labor and delivery ward because of contractions. Her dating was determined by a 7-week ultrasound. Her prenatal course was complicated by gestational diabetes. Her past surgical history is significant for shoulder surgery. She takes insulin and prenatal vitamins. She has no known drug allergies. She smokes 3-4 cigarettes per day. She is initially found to be 4 cm dilated and is contracting every 2-3 minutes. She is admitted to the labor and delivery ward and, over the next 4 hours, progresses to full dilation. After pushing for 2 hours, she delivers the fetal head but has great difficulty delivering the fetal shoulders. Eventually, the fetus is delivered by the posterior arm. In the process of delivery of the newborn's humerus is fractured. Which of the following factors contributed the most to the difficult delivery of the fetus?

62) A 28-year-old nulliparous woman presents to your office complaining of fatigue, low mood, and amenorrhea. She says that it all started two months ago and progressively worsened. She is sexually active and uses condoms for contraception. Her medical history is unremarkable, and she denies taking any drugs or medications. Examination reveals dry skin, short eyebrows, a painless and enlarged thyroid gland, and galactorrhea. The uterus has a normal size, and the adnexae are not palpable. Initial investigations reveal the following: Serum pregnancy test: Negative, Free T4: 2.5 µg/dl (N= 5-12), Serum TSH: 11 .0 µU/ml (N= 0.5-5.0), Prolactin: 30 ng/ml (< 20 ng/ml). Antimicrosomal antibodies: Positive of the following, which represents the association between hypothyroidism and hyperprolactinemia in the above patient?

63) A 51-year-old woman comes to your office for a routine health maintenance examination. She has no medical history but states that she has been having irregular menses and occasional hot flashes for the past eight months. Her husband has told her that she appears moody all the time. She has not had any surgeries in the past and currently takes no medications. She has a very stressful job and drinks two to three cups of coffee every morning. She does not smoke, but she does drink four to five twelve-ounce beers a day for the past 20 years to relieve her stress. She is a lacto-ovo vegetarian and walks two miles on a treadmill each day. Her temperature is 36.5C (97.7F), blood pressure is 120/70, heart rate is 84 beats/minute, and respirations are 12/minute. She is 5'4" and weighs 180 pounds (BMI is 30.9 kg/m2). Physical examination is unremarkable. You inform her that she is probably reaching menopause, and that she will be at an increased risk of developing osteoporosis. Which of the following is the most significant risk factor for the development of osteoporosis in this patient?

64) A 25-year-old woman comes to the physician with abdominal bloating, headache, fatigue, weight gain, anxiety, and decreased libido. She experiences these symptoms intermittently in 7 to 10-day episodes. In retrospect, she is unable to identify any triggers for her symptoms. The patient has a history of postpartum depression but has no recent feelings of hopelessness or guilt Physical examination is normal. Complete blood count, serum chemistries, and thyroid-stimulating hormone levels are within normal limits. Which of the following is the most appropriate next step in management of this patient?

65) A 25-year-old woman presents to your office complaining of a seven-week history of amenorrhea. She also states that she has had nausea and vomiting for five weeks. She is sexually active. Her medical and obstetrical histories are unremarkable. Serum hCG level is elevated. Which of the following is the most important role of hCG in pregnancy?

66) Your patient delivers a 7-lb 0-oz male infant at term. On physical examination, the baby has normalappearing male external genitalia. However, the scrotum is empty. No testes are palpable in the inguinal canals. At 6 months of age the boy’s testes still have not descended. A pelvic ultrasound shows the testes in the pelvis, and there appears to be a uterus present as well. The presence of a uterus in an otherwise phenotypically normal male is owing to which of the following?

67) A 20-year-old female with Müllerian agenesis is undergoing laparoscopic appendectomy by a general surgeon. You are consulted intraoperatively because the surgeon sees several lesions in the pelvis suspicious for endometriosis. You should tell the surgeon which of the following?

68) A 19-year-old patient presents to your office with primary amenorrhea. She has normal breast and pubic hair development, but the uterus and vagina are absent. Diagnostic possibilities include which of the following?

69) Which of the following pubertal events in girls is not estrogen dependent?

70) A 9-year-old girl has breast and pubic hair development. Evaluation demonstrates a pubertal response to a GnRH-stimulation test and a prominent increase in luteinizing hormone (LH) pulses during sleep. These findings are characteristic of patients with which of the following?

71) You suspect that your infertility patient has an inadequate luteal phase. She should undergo an endometrial biopsy on which day of her menstrual cycle?

72) You have recommended a postcoital test for your patient as part of her evaluation for infertility. She and her spouse should have sexual intercourse on which day of her menstrual cycle as part of postcoital testing?

73) You ask a patient to call your office during her next menstrual cycle to schedule a hysterosalpingogram as part of her infertility evaluation. Which day of the menstrual cycle is best for performing the hysterosalpingogram?

74) You have recommended that your infertility patient return to your office during her next menstrual cycle to have her serum progesterone level checked. Which is the best day of the menstrual cycle to check her progesterone level if you are trying to confirm ovulation?

75) Your patient is 43 years old and is concerned that she may be too close to menopause to get pregnant. You recommend that her gonadotropin levels be tested. Which is the best day of the menstrual cycle to check gonadotropin levels in this situation?

76) A 28-year-old woman comes to your office for an annual visit. She has been in good health over the past year. She exercises regularly and watches her diet. She has hypothyroidism for which she takes thyroid hormone replacement. She has no other medical problems. She had an appendectomy at the age of 18 and has had no other surgeries. She takes no other medications and has no known drug allergies. Physical examination, including breast and pelvic exam, is normal. She has three children and does not wish to become pregnant again. She has tried the oral contraceptive pill and the intrauterine device (IUD), but stopped both of these methods because of side effects. She is now considering tubal ligation. Counseling of this patient should include the fact that if she does have a tubal ligation she will be at increased risk for which of the following conditions?

77) A 56-year-old woman presents to your office for her routine wellwoman examination. She had a hysterectomy at age 44 for symptomatic uterine fibroids. She entered menopause at age 54 based on menopausal symptoms and an elevated FSH level. She started taking estrogen replacement therapy at that time for relief of her symptoms. She is fasting and would like to have her lipid panel checked while she is in the office today. You counsel the patient on the effects of estrogen therapy on her lipid panel. She should expect which of the following?

78) A 65-year-old woman presents to your office for evaluation of genital prolapse. She has a history of chronic hypertension, well controlled with a calcium channel blocker. She has had three full-term spontaneous vaginal deliveries. The last baby weighed 9 lb and required forceps to deliver the head. She says she had a large tear in the vagina involving the rectum during the last delivery. She has a history of chronic constipation and often uses a laxative to help her have a bowel movement. She has smoked for more than 30 years and has a smoker’s cough. She entered menopause at age 52 but has never taken hormone replacement therapy. Which of the following factors is least important in the subsequent development of genital prolapse in this patient?

79) A 31-year-old primigravid woman comes to the physician for a prenatal visit. She is known to be HIV positive. She also has asthma, for which she uses an inhaler. She had a diagnostic laparoscopy at age 20 for pelvic pain and has had no other surgeries. She has no known drug allergies. Extensive counseling is given to the patient regarding vertical transmission of HIV to the fetus. It is recommended to her that she take antiretroviral therapy during the pregnancy to decrease the vertical transmission rate. It is also recommended to her that she have a scheduled cesarean delivery. After consideration of these options, the patient chooses not to take the antiretrovirals and opts for a vaginal delivery. Which of the following represents the approximate risk of vertical transmission (from the mother to the fetus) for this patient?

80) A 36-year-old woman, gravida 5, para 4, at 30 weeks' gestation comes to the physician for a prenatal visit. She feels the baby moving and has not had bleeding per vagina, contractions, or loss of fluid. The prenatal course has been uncomplicated thus far. The patient is interested in having a postpartum tubal ligation. She has many questions regarding the procedure, including whether there is a risk of failure. Which of the following represents the closest estimate for the likelihood of failure of a postpartum tubal ligation?

81) A 23-year-old primigravid woman at 29-weeks' gestation comes to the physician because of contractions. She states that they have been occurring every 3-5 minutes for the past few hours and that they are worsening in intensity. Examination reveals that the patient is afebrile and her abdomen is nontender. Her cervix is 3 cm dilated, and the fetus is in vertex position. The patient is started on IV magnesium sulfate and penicillin and given an intramuscular injection of betamethasone. Which of the following represents the most significant consequence of this patient's preterm labor?

82) A 22-year-old G1 at 14 weeks gestation presents to your office with a history of recent exposure to her 3-year-old nephew who had a rubella viral infection. In which time period does maternal infection with rubella virus carry the greatest risk for congenital rubella syndrome in the fetus?

83) A 22-year-old has just been diagnosed with toxoplasmosis. You try to determine what her risk factors were. The highest risk association is which of the following?

84) A 30-year-old class D diabetic is concerned about pregnancy. She can be assured that which of the following risks is the same for her as for the general population?

85) A 37-year-old G3P2 presents to your office for her first OB visit at 10 weeks gestation. She has a history of Graves’ disease and has been maintained on propylthiouracil (PTU) as treatment for her hyperthyroidism. She is currently euthyroid but asks you if her condition poses any problems for the pregnancy. Which of the following statements should be included in your counseling session with the patient?

86) A 23-year-old G1 at 40 weeks gestation presents to the hospital with the complaint of contractions. She states they are occurring every 4 to 8 minutes and each lasts approximately 1 minute. She reports good fetal movement and denies any leakage of fluid or vaginal bleeding. The nurse places an external tocometer and fetal monitor and reports that the patient is having contractions every 2 to 10 minutes. The nurse states that the contractions are mild to palpation. On examination the cervix is 2 cm dilated, 50% effaced, and the vertex is at −1 station. The patient had the same cervical examination in your office last week. The fetal heart rate tracing is 140 beats per minute with accelerations and no decelerations. Which of the following stages of labor is this patient in?

87) A 38-year-old G3P3 begins to breast-feed her 5-day-old infant. The baby latches on appropriately and begins to suckle. In the mother, which of the following is a response to suckling?

88) A 26-year-old G1P1 is now postoperative day (POD) 6 after a low transverse cesarean delivery for arrest of active phase. On POD 2, the patient developed a fever of 39C (102.2F) and was noted to have uterine tenderness and foul-smelling lochia. She was started on broad-spectrum antibiotic coverage for endometritis. The patient states she feels fine now and wants to go home, but continues to spike fevers each evening. Her lung, breast, and cardiac examinations are normal. Her abdomen is nontender with firm, nontender uterus below the umbilicus. On pelvic examination her uterus is appropriately enlarged, but nontender. The adnexa are nontender without masses. Her lochia is normal. Her white blood cell count is 12 with a normal differential. Blood, sputum, and urine cultures are all negative for growth after 3 days. Her chest x-ray is negative. Which of the following statements is true regarding this patient’s condition?

89) A 32-year-old G2P2 develops fever and uterine tenderness 2 days after cesarean delivery for nonreassuring fetal heart tones. She is placed on intravenous penicillin and gentamicin for her infection. After 48 hours of antibiotics she remains febrile, and on examination she continues to have uterine tenderness. Which of the following bacteria is resistant to these antibiotics and is most likely to be responsible for this woman’s infection?

90) A patient was induced for being postterm at 421/2 weeks. Immediately following the delivery, you examine the baby with the pediatricians and note the following on physical examination: a small amount of cartilage in the earlobe, occasional creases over the anterior two-thirds of the soles of the feet, 4-mm breast nodule diameter, fine and fuzzy scalp hair, and a scrotum with some but not extensive rugae. Based on this physical examination, what is the approximate gestational age of this male infant?

91) A 30-year-old G3P3 is postoperative day 4 after a repeat cesarean delivery. During the surgery she received 2 units of packed red blood cells for a hemorrhage related to uterine atony. She is to be discharged home today. She complains of some yellowish drainage from her incision and redness that just started earlier in the day. She states that she feels feverish. She is breast-feeding. Her past medical history is significant for type 2 diabetes mellitus and chronic hypertension. She weighs 110 kg. Her vital signs are temperature 37.8C (100.1F), pulse 69 beats per minute, respiratory rate 18 breaths per minute, and blood pressure is 143/92 mm Hg. Breast, lung, and cardiac examinations are normal. Her midline vertical skin incision is erythematous and has a foul-smelling purulent discharge from the lower segment of the wound. It is tender to touch. The uterine fundus is not tender. Which of the following is not a risk factor for her condition?

92) A 44-year-old G6P3215 presents for her well-woman examination. She tells you that all of her deliveries were vaginal and that her largest child weighed 2900 g at birth. How many full-term pregnancies did this patient have?

93) A 30-year-woman presents to your office with the fear of developing ovarian cancer. Her 70-year-old grandmother recently died from ovarian cancer. You discuss with her the risks factors and prevention for ovarian cancer. Which of the following can decrease a woman’s risk of ovarian cancer?

94) Which of the following statements is true regarding contraception?

95) A 31-year-old primigravida develops gestational diabetes mellitus and is managed appropriately during pregnancy. She asks you about the consequences of gestational diabetes to her and her fetus. Which one of the following statements is correct?

96) A 23-year-old G1P0010 woman complains of severe dysmenorrhea (i.e., pain with menses). She misses work for the first 3 days of her menstrual cycle almost every month and states that this has been a problem for about 3 years, now getting worse. She is not currently sexually active and is not using any hormonal contraception. She complains of occasional deep abdominal pain after bowel movements. Subsequent laparoscopic evaluation reveals endometriosis. Which of the following is a true statement regarding this condition?

97) A 21-year-old woman presents with left lower quadrant pain. An anterior 7-cm firm adnexal cyst is palpated. Ultrasound confirms a complex left adnexal mass with solid components that appear to contain bone and teeth. What percentage of these tumors are bilateral?

98) A patient is receiving external beam radiation for treatment of metastatic endometrial cancer. The treatment field includes the entire pelvis. Which of the following tissues within this radiation field is the most radiosensitive?

99) A pregnant 35-year-old patient is at highest risk for the concurrent development of which of the following malignancies?

100) A 17-year-old girl is seen by her primary care physician for the evaluation of left lower quadrant pain. The physician felt a pelvic mass on physical examination and ordered a pelvic ultrasound. You are consulted because an ovarian neoplasm is identified by the ultrasound. Which of the following is the most common ovarian tumor in this type of patient?

101) A 41-year-old woman undergoes exploratory laparotomy for a persistent adnexal mass. Frozen section diagnosis is serous carcinoma. Assuming that the other ovary is grossly normal, what is the likelihood that the contralateral ovary is involved in this malignancy?

102) A 21-year-old woman returns to your office for evaluation of an abnormal Pap smear. The Pap smear showed a squamous abnormality suggestive of a high-grade squamous intraepithelial lesion (HGSIL). Colposcopy confirms the presence of a cervical lesion consistent with severe cervical dysplasia (CIN III). Which of the following human papilloma virus (HPV) types is most often associated with this type of lesion?

103) One day after a casual sexual encounter with a bisexual man recently diagnosed as antibodypositive for human immunodeficiency virus (HIV), a patient is concerned about whether she may have become infected. A negative antibody titer is obtained. To test for seroconversion, when is the earliest you should reschedule repeat antibody testing after the sexual encounter?

104) After reading an article titled: "The Risk of Cancer in Patients with Diethylstilbestrol (DES) Exposed Mothers", a 23-year old female comes to your office with her mother for assessment of possible risks. Her mother had been given DES while pregnant. Which of the following cancers is this patient most at risk of developing?

105) A 24-year-old female comes to the physician because of increasing facial acne and recent menstrual irregularities. She has no significant past medical history and she takes no medications. She does not use tobacco, alcohol or drugs. She weighs 170 lb (77 Kg) and is 62 in (155cm) tall. Physical examination shows moderate acne on her face and prominent hair on the upper lip. For which of the following conditions is she at greater risk than the general population?

106) You have a 32-year-old G1P0 patient who has undergone a routine obstetrical ultrasound screening at 20 weeks of gestation. The patient phones you immediately following the ultrasound because during the procedure the ultrasonographer commented that she noted several small fibroid tumors in the patient’s uterus. As this is the patient’s first pregnancy, she is concerned regarding the possible effects that the fibroid tumors may have on the outcome of her pregnancy. As her obstetrician, which of the following should you tell her?

107) A 58-year-old Caucasian woman comes in to your office for advice regarding her risk factors for developing osteoporosis. She is 5ft 1 in tall and weighs 195 lb. She stopped having periods at age 49. She is healthy but smokes one pack of cigarettes per day. She does not take any medications. She has never taken hormone replacement for menopause. Her mother died at age 71 after she suffered a spontaneous hip fracture. Which of the following will have the least effect on this patient’s risk for developing osteoporosis?

108) While evaluating a 30-year-old woman for infertility, you diagnose a bicornuate uterus. You explain that additional testing is necessary because of the woman’s increased risk of congenital anomalies in which organ system?

109) A 25-year-old primiparous woman comes to your office 12 weeks after vaginal delivery of a healthy female baby. She has not had a menstrual period since delivery. She is nursing, and is using barrier methods for contraception. Examination shows no abnormalities. Which of the following is the most likely mechanism for this patient's amenorrhea?

110) A 20-year-old G0 and her partner, a 20-year-old man, present for counseling for sexual dysfunction. Prior to their relationship, neither had been sexually active. Both deny any medical problems. In medical experience, which type of male or female sexual dysfunction has the lowest cure rate?

111) A 28-year-old G3P3 presents to your office for contraceptive counseling. She denies any medical problems or sexually transmitted diseases. You counsel her on the risks and benefits of all contraceptive methods. Which of the following is the most common form of contraception used by reproductive-age women in the United States?

112) A 20-year-old woman presents to your office for her well-woman examination. She has recently become sexually active and desires an effective contraceptive method. She has no medical problems, but family history is significant for breast cancer in a maternal aunt at the age of 42. She is worried about getting cancer from taking birth control pills. You discuss with her the risks and benefits of contraceptive pills. You tell her that which of the following neoplasms has been associated with the use of oral contraceptives?

113) A 39-year-old G3P3 presents for her postpartum examination and desires a long-term contraceptive method, but is unsure if she wants sterilization. She has been happily married for 15 years and denies any sexually transmitted diseases. Her past medical history is significant for mild hypertension, for which she takes a low-dose diuretic. She is considering an intrauterine device and wants to know how it works. Which of the following is the best explanation for the mechanism of the action of the intrauterine device (IUD)?

114) A 14-year-old girl is brought to the physician's office because of irregular menstrual periods. She had her menarche at age 13, and since then her periods have been irregular with the cycles varying from 3 to 6 weeks. She has no other symptoms. Physical examination is unremarkable. She has age appropriate secondary sexual characteristics. A urine pregnancy test is negative. Serum prolactin and thyroid stimulating hormone levels are normal. Administration of micronized oral progesterone results in withdrawal bleeding in 3 days. Which of the following most likely explains her irregular periods?

115) A 20-year-old woman presents to your office for a well-woman examination. She has been sexually active with one male partner for the past year. She has not achieved orgasm with her partner. On further questioning, she has never achieved orgasm with other partners or with masturbation or the use of a vibrator. Which of the following statements is true regarding her condition?

116) A 48-year-old woman presents to your office with the complaint of vaginal dryness during intercourse. She denies any medical problems or prior surgeries and does not take any medications. She still has regular menstrual cycles every 28 days. She denies any sexually transmitted diseases. She describes her sexual relationship with her husband as satisfying. Her physical examination is normal. Components of the natural lubrication produced by the female during sexual arousal and intercourse include which of the following?

117) A wealthy American executive donates five million dollars for the prevention of intrauterine growth restriction in the local county. Spending this money on which of the following programs would prevent the greatest number of cases of fetal growth restriction (FGR) in the population?

118) A 33-year-old woman comes to the physician because she has not had a menstrual period for 8 months. She had menarche at the age of 12 and, after a few years of irregular menses, has since had normal monthly menses. She has no medical problems and takes no medications. Examination reveals a normal-appearing female with no abnormalities noted. Urine human chorionic gonadotropin (hCG) is negative. Serum thyroid stimulating hormone (TSH) and prolactin are also normal. The patient is given a 10-day course of medroxyprogesterone acetate. Upon completing the 10 days, she has a heavy menstrual period. This patient's withdrawal bleeding in response to the progesterone provides good evidence for which of the following?