New part5 (1246-1274) nana7

150) A 23-year-old man complains of progressive low back pain for the past several months. He has morning stiffness that lasts for one hour. He has no history of trauma to his back and denies any recent illness. He had an episode of pain, blurring, and photophobia of his right eye two years ago that required ophthalmology evaluation. His vital signs are within normal limits. Examination shows tenderness in both sacroiliac joints and reduced range of motion of the lower back. If measured, which of the following is most likely to be present in this patient?

151) A 65-year-old man presents with right shoulder pain and weakness after falling on his outstretched hand. The pain is worse when he tries to position his arm above the shoulder level or when he pulls or pushes. He also complains of pain when he lies on the affected shoulder. He has a 40-pack-year history of cigarette smoking. His father died of multiple myeloma. His vital signs are within normal limits. Examination shows limitation of mid arc abduction and external rotation that does not improve after lidocaine injection. There is no swelling, redness or warmth of the joint. Radial pulse is normal. Muscle tone and bulk is within normal limits. Which of the following would be most helpful in confirming the patient's diagnosis?

152) A 49-year-old African American female complains of progressive exertional dyspnea. She also complains of swelling and pain in her finger joints over the last 6 months. She has been treated for severe heartburn with pantoprazole and for hypertension with lisinopril and hydrochlorothiazide. Her blood pressure is 145/100 mmHg and her heart rate is 80/min. Physical examination reveals prominent jugular venous distention. Her lungs are clear to auscultation, and no murmurs are present on cardiac auscultation. Her skin is thickened and discolored over the fingertips and interphalangeal joints. There is mild pitting ankle edema. Which of the following is most likely to be positive in this patient?

153) A 52-year-old woman presents with gradual-onset weakness in her leg muscles. She has noted difficulty climbing stairs and raising from a chair that has been worsening for the past few years. She initially related her symptoms to simply being "out of shape." She has no problem with chewing food. She has no pain in her muscles and has no skin rash. She takes metoprolol and hydrochlorothiazide for hypertension. She does not use tobacco, alcohol or drugs. Her vital signs are within normal limits. Examination reveals mild weakness of the thigh muscles in both legs. Deep tendon reflexes and sensory examination shows no abnormalities. Babinski sign is negative. Which of the following is most likely abnormal in this patient?

154) A 62-year-old Caucasian female complains of difficulty swallowing solid food. She needs to take sips of water during every meal to help with swallowing. Her past medical history is significant for hypertension controlled with metoprolol. She uses some over-the-counter eye drops for eye dryness. Her blood pressure is 140/90 mmHg and heart rate is 60/min. Physical examination reveals prominent dental caries. There are bilateral firm submandibular swellings present on neck palpation. Which of the following is the best test to confirm this patient's diagnosis?

155) A 60-year-old male presents to the emergency room with a two-week history of low back pain and low-grade fever. His past medical history is insignificant. He tried several over-the-counter pain medications with little success. His temperature is 38.3°C (101°F), blood pressure is 120/76 mmHg, pulse is 90/min, and respirations are 16/min. Physical examination reveals percussion tenderness over the lumbar vertebrae and local paravertebral muscular spasm. Neurological examination shows 2+ deep tendon reflexes and 5/5 muscle power. The straight-leg raising test is negative at 90 degrees. Laboratory values are: Hemoglobin 12.2 g/dL, Leukocyte count 10,700/cmm, Segmented Neutrophils 63%, Bands 4%, Eosinophils 3%, Basophils 0%, Lymphocytes 23%, Monocytes 6%, Platelets 400,000/cmm, ESR 75 mm/hr. What is the next step in the management of this patient?

156) A 52-year-old man presents with 24 hours of pain and swelling of his right knee. He also reports having constipation, excessive urination, and fatigue for the past several months. He denies fevers, chills, and trauma to the knee. He does not use tobacco, alcohol or drugs. His temperature is 37.2°C (98.9°F), and blood pressure is 130/76 mmHg. Examination shows tenderness, erythema, and swelling of the right knee. His lab values are: Serum sodium 138 mEq/L, Serum potassium 4.0 mEq/L, Serum creatinine 1.1 mg/dl, Serum calcium 11.9 mg/dl, Serum phosphorous 1.9 mg/dl, Blood glucose 98 mg/dl. Which of the following would synovial fluid analysis from the knee most likely reveal?

157) A 24-year-old Caucasian male undergoes pulmonary function testing. The following values are obtained: FEV 80% of predicted, FEV1/FVC 85%, FRC 110% of predicted. He has no current complaints except for occasional low back pain treated with naproxen. He smokes one pack per day and drinks a sixpack of beer each weekend. His ESR is 47 mm/hr. Which of the following best explains the pulmonary function test findings in this patient?

158) A 58-year-old woman has had bilateral hip and knee pain for the past several months. The pain is worse with activity and better with rest. Recently she has noticed swelling of the right knee. She reports morning stiffness of about 10-15minutes duration. She denies fever or weight loss. Her past medical history is significant for hypertension, type 2 diabetes, gastroesophageal reflux disease, and obstructive sleep apnea. She takes hydrochlorothiazide, lisinopril, omeprazole, insulin and aspirin. She does not use tobacco, alcohol or drugs. Her temperature is 37.2°C (98.9°F), and blood pressure is 146/86 mmHg. Examination shows a mild effusion, tenderness, and decreased range of motion of the right knee. Synovial fluid analysis reveals the following: Cell count 1100/ml, Gram stain negative, Crystals absent. Plain films of her knee joint would most likely reveal?

59) A 23-year-old white woman presents complaining of 6 months of progressive low back pain. She complains of morning stiffness that lasts one hour, and says her symptoms improve with physical activity. She denies rash, eye pain, urinary problems, and diarrhea. Her past medical history is significant only for an appendectomy at the age of 16 years. She has been taking birth control pills for the past two years. She is afebrile with normal weight and height. Examination reveals reduced forward flexion of the lumbar spine and tenderness over the sacroiliac joints. The remainder of the physical examination is normal. Which of the following is the most appropriate next step in the management of this patient?

161) A 60-year-old male presents to your office complaining of right-sided neck pain and numbness over the posterior surface of the forearm. He had several such episodes over the last two years that responded to NSAIDs and physical therapy. Physical examination reveals limited neck rotation and lateral bending. There is decreased pinprick sensation on the posterior aspect of the right forearm, but no muscle weakness is present. Triceps reflex is normal. Which of the following is the most likely finding on the neck radiography of this patient?

162) A 40-year-old school teacher comes to the physician's office complaining of joint pain. Her symptoms began 10 days ago and consist of pain in the metacarpophalangeal (MCP) joints, proximal interphalangeal (PIP) joints, wrists, knees and ankles, bilaterally. She describes joint stiffness lasting 10 to 15 minutes after a prolonged rest. She denies fever, malaise, weight loss and skin rash. Her past medical history is insignificant. She does not take any medications. On examination, there is no evidence of swelling, redness or tenderness of the involved joints. The remainder of the physical examination is unremarkable. Which of the following is most likely elevated in this patient?

163) A 40-year-old woman complains of 7 weeks of pain and swelling in both wrists and knees. She has several months of fatigue. After a period of rest, resistance to movement is more striking. On examination, the metacarpophalangeal joints and wrists are warm and tender. There are no other joint abnormalities. There is no alopecia, photosensitivity, kidney disease, or rash. Which of the following is correct?

164) A 70-year-old man complains of fever and pain in his left knee. Several days previously, he suffered an abrasion of his knee while working in his garage. The knee is red, warm, and swollen. An arthocentesis is performed, which shows 200,000 leukocytes/μL and a glucose of 20 mg/dL. No crystals are noted. Which of the following is the most important next step?

165) A 60-year-old woman complains of dry mouth and a gritty sensation in her eyes. She states it is sometimes difficult to speak for more than a few minutes. There is no history of diabetes mellitus or neurologic disease. The patient is on no medications. On examination, the buccal mucosa appears dry and the salivary glands are enlarged bilaterally. Which of the following is the best next step in evaluation?

166) A 45-year-old woman has pain in her fingers on exposure to cold, arthralgias, and difficulty swallowing solid food. What is the best diagnostic test?

167) A 65-year-old man develops the onset of severe knee pain over 24 hours. The knee is red, swollen, and tender. He has a history of diabetes mellitus and cardiomyopathy. An x-ray of the knee shows linear calcification. Definitive diagnosis is best made by which of the following?

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?