Part 4O

63) A 57-year-old woman presents to the ED with a basin in her hand and actively vomiting. You insert an IV catheter, start IV fluids, and administer an antiemetic agent. The patient feels much better but also complains of severe crampy abdominal pain that comes in waves. You examine her abdomen and note that it is distended and that there is a small midline scar in the lower abdomen. Upon auscultation, you hear high-pitched noises that sound like “tinkles.” Palpation elicits pain in all four quadrants but no rebound tenderness. She is guaiac negative. Which of the following is the most common cause of this patient’s presentation?

64) A 48-year-old woman comes to the office because her regular screening mammogram revealed irregular densities. Radiographic-guided needle biopsy shows evidence of invasive lobular carcinoma. The tumor is hormone receptor positive (HR +). Further investigation reveals involvement of the axillary lymph nodes; the other breast seems to be spared. No distant metastasis is detected. She undergoes modified radical mastectomy, along with radiotherapy. She is then prescribed adjuvant chemotherapy and tamoxifen for 5 years. This patient's use of tamoxifen increases her risk for developing which of the following cancers:

65) A 54-year-old Caucasian woman presents to your office with fatigue. She also reports dizziness and palpitations after moderate physical activity. Additionally, her feet feel "numb" and are less sensitive to cold than they used to be. She has no significant past medical history. Physical examination reveals pale conjunctivae and a shiny tongue. Ankle reflex is decreased bilaterally. Laboratory findings include: Hemoglobin 7.6 mg/dL, MCV 110 fL, MCHC 36 g/dL, WBC count 3,900/mm3, Platelet count 150,000/mm3. This patient should be monitored for which of the following long-term complications?

66) A 34-year-old male is brought to the emergency room after being involved in a motor vehicle accident. He suffers blunt abdominal trauma and bilateral femur fractures. He has no significant past medical history. On physical examination, his blood pressure is 80/40 mmHg and his heart rate is 110/min. He receives several units of packed red blood cells. Once stabilized, the patient begins complaining of a tingling sensation in his toes and fingers. His serum calcium level is noted to be 7.2 mg/dL. Which of the following is the most likely cause of this patient's current symptoms?

67) An 81-year-old man is brought to the hospital due to complaints of very severe pain in his back and thighs. Seven months ago, he was diagnosed with stage IV prostate cancer which reached the spine. He has had palliative radiotherapy of his spine, and is now taking leuprolide. He is restless and very irritable, even after the nursing home staff gave him ibuprofen. He has never received any narcotics. What is the best next step in this patient's pain management?

68) A 45-year-old previously healthy male is brought to the emergency room because of headaches and confusion for 2 days. He denies any focal weakness or sensory symptoms. He has no significant past medical history and does not use any medications. He does not use tobacco, alcohol or drugs. On physical exam, the patient has a temperature of 37.9°C (100.2°F), a blood pressure of 140/86 mm Hg, a pulse of 96/min, and respirations of 16/min. Mild icterus is present. The patient's oropharynx is clear and his neck is supple and without rigidity. Examination of the patient's chest and abdomen is unremarkable. Neurologic examination reveals no focal deficits. Laboratory studies show: Complete blood count: Hemoglobin 84 g/L, Platelet count 80,000/mm3, Leukocyte count 5,500/mm3. Chemistry panel:Blood urea nitrogen (BUN) 30 mg/dL, Serum creatinine 2.2 mg/dL, Serum calcium 10.0 mg/dL, Blood glucose 98 mg/dL. A peripheral blood smear shows many fragmented red blood cells. The prothrombin time is normal. Which of the following is the most appropriate next step in the management of this patient?

69) A 54-year-old male comes to the emergency department with complaints of cough and bloody sputum. He used to smoke 2 packs of cigarettes daily for 22 years, but states that he quit last month. He also complains of weight loss, anorexia, constipation, increased thirst, and easy fatigability, which he attributes to depression. He lost his wife 4 months ago and "life never felt the same after that." He is sure that he cannot have cancer because he does not smoke anymore. His vital signs are stable. He appears slim, pale, slightly irritable, and short of breath. The laboratory studies and chest x-ray results are as follows: Sodium 144 mEq/dL, Potassium 4.3 mEq/dL, Chloride 98 mEq/dL, Bicarbonate 21 mEq/dL, Calcium 14.5 mg/dl, BUN 48 mg/dl, Creatinine 2.0 mg/dl, Chest x-ray hilar mass in the left lung. While in the ED, he becomes more somnolent and vomits twice. What is the best next step in the management of this patient?

70) A 75-year-old Caucasian male who was diagnosed with carcinoma of the prostate presents to ER with worsening back pain for the past 2-3 days. He never had this pain before. He denies any weakness of the legs. On examination, his muscle power in the lower extremities is 4.5/5 and has brisk reflexes. Rectal sphincter tone is weak. He has point tenderness over the L5 and S1 region. His vital signs are, BP: 122/80 mm Hg, PR 80/min, RR 16/min and Temperature 37°C (98°F). What is the most appropriate next step in management of this patient?

72) A 22-year-old African American male suffering from sickle cell anemia presents in the emergency department with a sustained painful penile erection for the last 4 hours. Previously, he had one episode of acute chest syndrome that was treated with oxygenation, hydration and blood transfusion. His pulse is 76/min, respirations are 16/min, blood pressure is 115/76 mm Hg, and temperature is 37°C (98.6°F). Examination of all his systems is unrevealing. What is the best next step in the management of this patient?

73) A 65-year-old man presents to the emergency department with a two-day history of fever, headache, altered mental status, and vomiting. His past medical history is significant for renal transplantation secondary to polycystic kidney disease, hypertension, and diabetes. He takes aspirin, insulin, nifedipine, cyclosporine, and prednisone. He has no known drug allergies. His temperature is 39.2°C (102.5°F), pulse is 102/min, respirations are 18/min, and blood pressure is 120/75 mm Hg. He is alert but confused. Fundoscopy does not show any abnormalities. His neck is stiff. Lungs are clear to auscultation. He has a normal S1 and S2 with a II/IV systolic ejection murmur heard best in the right infraclavicular area. Complete blood count shows a WBC count of 17,000/cm3 with neutrophilic leukocytosis. His blood is drawn and sent for culture. Lumbar puncture is performed and the results are pending. Which of the following is the most appropriate empiric antibiotic therapy for this patient?

74) A 7-year-old Caucasian boy with a history of cystic fibrosis presents to the emergency department with a two-day history of high-grade fever and cough productive of purulent, green-colored sputum. He also complains of chest pain, which is worsened by breathing. His temperature is 39.6°C (103.2°F), pulse is 112/min, respirations are 26/min, and blood pressure is 90/60 mm Hg. Chest examination shows dullness on percussion and increased tactile fremitus in the right lung base. Chest x-ray shows a right lower lobe infiltrate. Which of the following is the most appropriate pharmacotherapy for this patient?

75) A 28-year-old man presents to ER with fever, chills, and generalized weakness for the past one week. He has no history of pre-existing heart disease, but he was admitted to the hospital six months ago for cellulitis of the right arm. His temperature is 40.0°C (104°F), pulse is 110/min, respirations are 22/min, and blood pressure is 110/65 mmHg. Oropharynx is clear. Lungs are clear to auscultation. A holosystolic murmur is heard at the lower sternum which increases in intensity with inspiration. His blood is drawn and sent for culture. What is the most appropriate initial antibiotic therapy for this patient?

76) A 45-year-old female presents to emergency room complaining of urinary frequency, burning during urination, and weakness. Her last menstrual period was one year ago, and she is not sexually active. She is not taking any medications. Her temperature is 37.8°C (100°F), blood pressure is 120/76 mmHg, pulse is 80/min, and respirations are 14/min. Very mild costovertebral angle tenderness is present. IV ceftriaxone is started. Two days later, the patient feels much better. Antibiotic susceptibility testing returned with an uropathogen (E.coli) highly sensitive to ceftriaxone, gentamicin, ciprofloxacin and trimethoprim/sulfamethoxazole (TMP/SMX). Which of the following is the most reasonable next step in the management of this patient?

77) A 65-year-old man presents to the emergency department with a two-day history of fever, headache, altered mental status, and vomiting. His past medical history is significant for renal transplantation secondary to polycystic kidney disease, hypertension, and diabetes. He takes aspirin, insulin, nifedipine, cyclosporine, and prednisone. He has no known drug allergies. His temperature is 39.2°C (102.5°F), pulse is 102/min, respirations are 18/min, and blood pressure is 120/75 mm Hg. He is alert but confused. Fundoscopy does not show any abnormalities. His neck is stiff. Lungs are clear to auscultation. He has a normal S1 and S2 with a II/IV systolic ejection murmur heard best in the right infraclavicular area. Complete blood count shows a WBC count of 17,000/cm3 with neutrophilic leukocytosis. His blood is drawn and sent for culture. Lumbar puncture is performed and the results are pending. Which of the following is the most appropriate empiric antibiotic therapy for this patient?

79) A 54-year-old diabetic woman comes to the emergency department because of increasing neck and facial pain, fever, and chills. A few weeks ago, she developed an infection on the side of her neck. She thought it would go away with over-the-counter medication, but the infection has now started to drain. For the past twenty years, she has had diabetes, which is well-controlled with an oral hypoglycemic. She denies trauma, travel, and smoking. Physical examination reveals an area of erythema and induration at the base of the neck. Serosanguineous fluid is draining from a small defect in the skin near the center of the lesion. There is no crepitus. Histological analysis of the discharge reveals the presence of gram positive, branching bacteria. The treatment for this patient is?

80) A 72-year-old man presents to the ED during the month of January complaining of non-productive cough, fever, malaise, runny nose, and severe body aches. The symptoms came on suddenly last night. He has no other medical problems. Physical examination reveals a temperature of 38.9°C (102.0°F) and oxygen saturation of 88% on room air. His lung exam reveals diffuse crackles with occasional wheezes. Laboratory values are: Hematocrit 44%, Platelets 219,000/mm3, Leukocyte count 4,100/mm3, Neutrophils 65%, Lymphocytes 32%. His chest x-ray reveals diffuse interstitial infiltrates bilaterally. What is the most appropriate initial therapy for this patient?

81) A 23-year-old man is brought to the emergency room because of confusion and hallucinations. While in ER, he has an episode of generalized tonic-clonic seizures. His past medical history is significant for illicit drug use. His temperature is 40.0°C (104.0°F), pulse is 95/min, and blood pressure is 120/80 mm Hg. He is confused and disoriented. Fundoscopy is with in normal limits. There is no neck stiffness. The neurological examination shows upgoing plantar reflexes bilaterally. Lumbar puncture is performed and CSF analysis shows the following: Glucose 35mg/dl, Protein 80mg/dl, WBC count 150/cm3, Neutrophils 10%, Lymphocytes 90%, Gram stain Negative. CT scan of the brain without contrast is normal. Which of the following is the most appropriate next step in the management of this patient?

82) A 65-year-old female who lives in nursing home and is bed ridden due to severe right hemiparesis is brought to the ER because of altered mental status and decreased oral intake. Her past medical history includes hypertension, diabetes, hyperlipidemia, and myocardial infarction. She has a chronic indwelling Foley catheter to avoid contamination of a sacral decubitus ulcer. She is febrile in the ER. Examination shows dry mucus membranes and clear lungs. She is disoriented. The decubitus ulcer has good granulation tissue and does not appear infected. Labs show: Hemoglobin 12.0 g/L, Leukocyte count 12 500/mm3, Blood urea nitrogen (BUN) 28 mg/dL, Serum creatinine 0.8 mg/dL, Serum bicarbonate 24 mg/dL. Urinalysis: Specific gravity 1.036, Protein 1+, pH 8.5, Blood negative, Glucose 1+, Ketones negative, Leukocyte esterase positive, WBC 50-100/hpf, Bacteria few. Which of the following is the most likely cause of her altered mental status?

83) A 21-year-old man presents with symptoms of headache, fever, chills, and discomfort in both sides of his jaw. He has also noticed discomfort in his testes, but no dysuria or urethral discharge. Physical examination reveals bilateral enlargement of the parotid glands, as well as bilateral testicular enlargement and tenderness on palpation. His temperature is 38.5°C pulse rate of 92/min, and the remaining examination is normal. Laboratory data show hemoglobin 15 g/dL; hematocrit 40%; WBC 12000/mL, with 30% segmented neutrophils, 8% monocytes, and 62% lymphocytes. Which of the following statements concerning this dis- ease is true?

84) An 8-year-old boy from an impoverished inner- city area has never been vaccinated appropriately. He develops fever, cough, and coryza. The next day, blue white spots develop on the buccal mucosa. On the third day, an erythematous, nonpruritic maculopapular rash develops on the face and spreads over the entire body. Which of the following is the most likely complication?

85) A 6-year-old boy develops symptoms of cough, fever, and malaise followed by a generalized maculopapular rash that has spread from the head downwards. A clinical diagnosis of measles is made. A few days after the onset of the rash he is drowsy, lethargic, and complaining of headache. A lumbar puncture, electroencephalogram (EEG), and computerized tomography (CT) of the brain exclude other etiologies and confirm the diagnosis of encephalitis. Which of the following is the most likely delayed neurologic complication of measles virus encephalitis?

86) A 24-year-old man complains of fatigue, malaise, fever, and a sore throat. He was previously well, but now feels tired all the time and has to rest multiple times a day. Physical examination shows enlarged tonsils and palpable anterior and posterior cervical, axillary, and inguinal lymph nodes. There is also tenderness in the right upper quadrant with a liver span of 10 cm. Laboratory data is significant for a heterophil antibody (sheep cell agglutination) test that is positive. Which of the following rare complications can be associated with this condition?

87) A 65-year-old male presents to the emergency department complaining of fever, chills, and a productive cough for the past 3 days. He also complains of right-sided chest pain and shortness of breath. He says that his chest pain worsens with deep breathing. The patient's past medical history is significant for diabetes and hyperlipidemia. He takes aspirin, simvastatin, metformin, glipizide and rosiglitazone. He does not use tobacco, alcohol or drugs. On physical exam, he has a temperature of 39.2°C (102.5°F), a blood pressure of 110/70 mm Hg, a pulse of 112/min, and respirations of 24/min. His mucus membranes are dry. Chest x-ray reveals a right lower lobe pneumonia. Laboratory studies show: Hemoglobin 17.0 g/L, Platelets 250,000/mm3, Leukocyte count 16,500/mm3, Serum sodium 140 mEq/L, Serum potassium 4.5 mEq/L, Blood urea nitrogen (BUN) 48 mg/dL, Serum creatinine 2.0 mg/dL, Serum calcium 10.3 mg/dL, Blood glucose 128 mg/dL. Blood cultures are obtained and antibiotics are administered. What is the appropriate next step in the management of this patient?

88) A 70-year-old woman is brought to the emergency department by her daughter because of altered mental status. She lives alone and is able to perform all daily activities. She experienced a minor febrile illness with decreased appetite several days ago, but has otherwise been in good health. She takes no medications. Her temperature is 37.2°C (99°F), blood pressure is 92/50 mm Hg, pulse is 100/min, and respirations are 18/min. Physical examination shows dry oral mucosa. Laboratory studies show: Hematocrit 45%, Serum sodium 147 mEq/L, Serum potassium 5.2 mEq/L, BUN 70 mg/dl, Serum creatinine 1.8 mg/dl. Which of the following is the most appropriate next step in management?

89) A 45-year-old woman presents to the emergency department (ED) with vomiting and severe right flank pain that radiates to her groin. She has been to the ED twice in the past due to similar episodes of renal colic, and was subsequently discharged on both occasions. She admits to not seeking further medical care because she has no insurance. KUB shows a renal stone. 24-hour urine collection shows a urinary calcium excretion of 350 mg (normal is less than 250 mg in women). Laboratory studies show a serum calcium concentration of 8.9 mg/dL; serum PTH is normal. An x-ray film of the chest shows no abnormalities. Further investigations fail to reveal the cause of her hypercalciuria. Apart from advising her to increase her fluid intake, which of the following interventions will benefit this patient?

90) A 65-year-old man is brought to the emergency department due to the sudden onset of weakness. He was lying on the floor for several hours before he was brought in. His other medical problems include hypertension, diabetes mellitus, coronary artery disease, transient ischemic attacks and osteoarthritis. CT scan of the head shows evidence of a right middle cerebral artery territory stroke. Laboratory studies show: Serum Na 137 mEq/L, Serum K 64 mEq/L, Chloride 104 mEq/L, Bicarbonate 18 mEq/L, BUN 36 mg/dl, Serum creatinine 3.0 mg/dl, Calcium 8.3 mg/dl, Blood glucose 178 mg/dl. His serum creatinine level one month ago was 1.4 mg/dl. EKG shows tall 'T' waves. CK level is pending. Which of the following is the most appropriate next step in management?

91) A 3-year-old girl is brought to the emergency department because of fever, chills, vomiting, and abdominal pain. Her temperature is 39.5°C (103.1°F), blood pressure is 70/40 mm Hg, pulse is 110/min, and respirations are 20/min. She is restless and diaphoretic. The abdominal examination shows right costovertebral tenderness. Laboratory studies show: Hemoglobin 15.0 g/L, Platelets 260,000/mm3, Leukocyte count 16,500/mm3, BUN 20 mg/dL, Serum creatinine 1.1 mg/dL. Urinalysis: Blood Negative, Glucose Negative, Ketones Negative, Leukocyte esterase Positive, Nitrites Positive, WBC 40-50/hpf, RBC 5-9/hpf. Blood and urine cultures are taken. Which of the following is the most appropriate next step in management?

92) A 45-year-old man comes to the emergency department (ED) with severe right flank pain. He is tossing in bed due to the pain. KUB done in the ED shows no abnormalities; however, abdominal ultrasound shows a 5 mm stone in the right ureter. Urinalysis shows: Urine pH 4.5 (normal is 5-6), WBC Absent, RBC 2-3/HPF, Bacteria Absent, Nitrites Negative, Esterase Negative. Which of the following is the most beneficial next step in management?

93) A 35-year-old man comes to the physician due to a one-month history of weight gain and facial edema. The facial edema resolves at the end of the day, but ankle edema develops. His temperature is 37.2°C (99°F), blood pressure is 142/80 mm Hg, pulse is 80/min, and respirations are 16/min. Examination shows 2+ ankle edema. Laboratory studies show: Hb 11.0 g/dl, WBC 8,000/cmm, Platelets 200,000/cmm, Serum Na 135 mEq/L, Serum albumin 2.2 g/dl, BUN 16 mg/dl, Serum creatinine 1.0 mg/dl. Urinalysis: Glucose Absent, Protein 4+, WBC 1-2/HPF, RBC Absent, Casts Fatty casts. This patient is most likely at risk for developing which of the following?

94) A 73-year-old man presents to the emergency department complaining of lower abdominal pain and nausea. He denies any vomiting or diarrhea, and his last bowel movement was two days ago. The patient also notes that several days ago he began taking amitriptyline for chronic neck pain. He does not smoke or consume alcohol. On physical examination, his blood pressure is 160/70 mmHg and his heart rate is 100/min. His lung fields are clear to auscultation. Palpation of the abdomen reveals fullness and tenderness along the midline below the umbilicus. Which of the following is the best initial management for this patient?

95) A 34-year-old woman comes to the physician's office because of occasional headaches and palpitations. She has no other medical problems. She takes no medications. She smokes one and a half packs of cigarettes daily. Her blood pressure is 170/100 mm Hg in both arms, and heart rate is 80/min. Physical examination shows bilateral flank masses. Laboratory studies show: Serum sodium 140 mEq/L, Serum potassium 4.4 mEq/L, BUN 26 mg/dL, Serum creatinine 1.3 mg/dL. Urinalysis shows 10-12 red blood cells/hpf, but otherwise shows no abnormalities. The most likely complication that can occur in this patient is which of the following?

96) A 47-year-old HIV-positive man is brought to the emergency room because of weakness. The patient has HIV nephropathy and adrenal insufficiency. He takes trimethoprim-sulfamethoxazole for PCP prophylaxis and is on triple-agent antiretroviral treatment. He was recently started on spironolactone for ascites due to alcoholic liver disease. Physical examination reveals normal vital signs, but his muscles are diffusely weak. Frequent extrasystoles are noted. He has mild ascites and 1+ peripheral edema. Laboratory studies show a serum creatinine of 2.5 with a potassium value of 7.3 mEq/L. An EKG shows peaking of the T waves and QRS duration of 0.14. What is the most important immediate treatment?

97) A 69-year-old man is brought to the ER by his family for increasing confusion. At baseline the patient is interactive and pleasant, but he has become withdrawn and confused over the last several months. He has also complained of abdominal pain, nausea, vomiting and back pain over the same period of time. His medical history is significant for diabetes controlled with metformin and hypertension treated with hydrochlorothiazide. Exam reveals normal vital signs and a disheveled, confused man. His neurologic exam is otherwise normal. Examination of the heart and lungs is unremarkable and no neck masses or nodes are appreciated. Laboratory results are given below: Sodium 139 mEq/L, Potassium 4.2 mEq/L, Chloride 111 mEq/L, Bicarbonate 26 mEq/L, Creatinine 1.4 mg/dl, Glucose 142 mgldl, Calcium 12.8 mEq/L, WBC 3,200/mm3, Hematocrit 32%, Platelets 47,000/mm3. What is the most appropriate next step for this patient?

98) A 38-year-old woman presents to the emergency department and complains of persistent vomiting that has increased in severity over the last week. Her other complaints are muscular weakness, twitching and cramps. Her urine output has decreased over the last 20 hours. Her past medical history is significant for a previously diagnosed prepyloric peptic ulcer. Her pulse is 100/min, blood pressure is 100/60 mmHg, respirations are 12/min, and temperature is 37.2°C (99°F). Physical examination reveals dry oral mucosa and decreased skin turgor. Abdominal examination reveals hypoactive bowel sounds and mild tenderness on palpation of the epigastrium. Nasogastric suction is started, and intravenous normal saline is given. Laboratory studies show: Serum sodium 135 mEq/L, Serum potassium 2.8 mEq/L, Chloride 81 mEq/L, Bicarbonate 40 mEq/L, Blood urea nitrogen (BUN) 42 mg/dl, Serum creatinine 1.3 mg/dl, Calcium 8.6 mg/dl, Ionized calcium 0.7 mmoi/L (1.1-1.3 mmoi/L), Serum pH 7.54. Which of the listed agents should be added to the patient's current therapy?

99) A 22-year-old man presents to the emergency department complaining of fever, nausea, vomiting, and right lower quadrant pain. He has no significant medical history and does not take any medications. He is a senior in college and denies cigarette smoking or drug use. He drinks alcohol occasionally. Physical examination reveals a temperature of 38.6°C, with all other vital signs within normal limits. ACT scan of his abdomen confirms acute appendicitis. Laboratory analyses reveal a leukocytosis but no electrolyte abnormalities. He is taken to the operating room and undergoes a successful laparoscopic appendectomy. Following the procedure, he is given intravenous fluids containing 5% dextrose in a 0.45% (½normal) saline solution at a rate of 150 ml/hr. The next morning the patient feels well but he then becomes progressively confused throughout the afternoon. You are called to his bedside after he has two grand mal seizures lasting 30 seconds apiece. Serum chemistries drawn at that time reveal a sodium concentration of 115mEq/L. What is the most appropriate therapy for this patient?

100) A 71-year-old man with inclusion body myositis is brought to the emergency department from his nursing home after becoming less interactive. His temperature is 37.1°C, blood pressure is 90/60, heart rate is 98/min, and respiratory rate is 16/min. He has orthostatic vital signs. Physical examination reveals a frail man with dry oral mucosa and decreased axillary perspiration. Laboratory studies reveal the following: Sodium 164 mEq/L, Potassium 4.9 mEq/L, Bicarbonate 29 mEq/L, Chloride 122 mEq/L. What is the most appropriate next step in the management of this patient?

101) A 55-year-old male is brought to the emergency department with a gunshot wound to his abdomen. He went to the operating room for repair of his injuries. On postoperative day 4, he develops a waxing and waning fever, tachypnea and shortness of breath. His temperature is 40°C (104°F), blood pressure is 90/60 mm Hg, pulse is 110/min and respirations are 22/min. Physical examination reveals an altered sensorium, crackles at the right lung base and a well healing abdominal wound. His urine output over the last 12 hours is 100ml. His laboratory profile shows: Blood pH 7.23, PaO2 60 mm Hg, PaCO2 32 mmHg, HCO3- 16 mEq/L. Broad-spectrum antibiotics are started. Which of the following additional treatments is most appropriate in this patient?

102) A 34-year-old Mexican male comes to the emergency department and complains of severe episodic headache, especially at night, for the past month. He also complains of unilateral, sharp, stabbing pain in the eye, which wakes him from sleep. The pain often starts suddenly just behind the right eye, and spreads to his face and temple region. It is not associated with nausea or visual disturbances, but is associated with watering of the eyes and nose, and with red eye. He had a similar episode one year ago, and it lasted for 2 months. Which of the following is the best treatment regimen for aborting the patient's pain during an acute attack?

103) A 63-year-old man presents to the emergency department with a 6-hour history of slurred speech and right hand weakness. His past medical history is significant for chronic hypertension and a myocardial infarction 2 years ago. His current medications include enalapril and aspirin. He smokes 2 packs of cigarettes daily and consumes alcohol occasionally. His blood pressure is 165/95 mmHg, pulse is 80/min, and respirations are 14/min. Physical examination reveals right hand weakness and mild motor aphasia without sensory abnormalities Which of the following is the most probable cause of this patient's condition?

104) A 37-year-old white female with myasthenia gravis presents to the office with a fever and cough productive of yellow-green sputum. She has been on pyridostigmine for the past few months. She refuses to have a thymectomy. Her pulse is 90/min, blood pressure is 120/76 mm Hg, respirations are 18/min, and temperature is 38.9°C (102°F). Her respiratory effort is weak. Pulse oximetry reveals 86% oxygen saturation on room air. There is a consistent decline on serial measurement of vital capacity. Which of the following is the most appropriate next step in management?

105) A 36-year-old white female is brought to the emergency department due to paraplegia and bladder incontinence. She immediately tells you that she has, "multiple sclerosis in remission." She has a history of optic neuritis and internuclear ophthalmoplegia, and both resolved with treatment. At that time, MRI showed plaques in the periventricular region. She is currently not taking any medications. Which of the following is the most appropriate next step in the management of this patient?

107) A 24-year-old male is brought to the emergency room after he fainted while practicing football on a bright sunny day. He complained of dizziness and headache before he collapsed. He was in his usual state of health until today and has no medical problems. He takes no medication. On arrival to the emergency room, his temperature is 41°C (105.8°F), blood pressure is 90/60 mm Hg, pulse is 140/min, and respirations are 22/min. He is not oriented. Skin is dry and hot. Neck is supple. Auscultation of the chest is unremarkable. Abdomen is soft and non-tender. Muscle tone and reflexes are within normal limits. Intravenous hydration is started. Which of the following is the most appropriate next step in management?

108) A 23-year-old male with a history of drug abuse is brought to the emergency department (ED) by an ambulance while having a tonic-clonic seizure. His mother soon arrives at the ED and says that she found him on the floor, where "he must have fallen." She says his seizure has lasted for more than 30 minutes now, and that he never regained consciousness since she found him. In the ED, he is unresponsive and cyanotic. He is biting his tongue and is incontinent. Despite resuscitation and administration of intravenous lorazepam, phenytoin, and glucose, the seizures continue. What is the best next step in the management of this patient?

109) A 27 -year-old white female comes to the office and complains of a headache for the last two weeks. She characterizes the headache as intermittent, "feels like a dull ache", 5/10 in severity, and associated with nausea and vomiting. She is afebrile and never had such a headache before. She has no visual complaints. She is a non-smoker and drinks alcohol only on weekends. Her only drugs are oral contraceptive pills (OCPs). Her menses are regular, and she has never conceived. She has no family history of similar problem. Her pulse is 80/min, temperature is 37.1°C, blood pressure is 120/75mmHg and respirations are 15/min. She is 5 feet 10 inches tall, and her weight is 210 lbs. The neurological examination is non-focal, and there are no signs of meningeal irritation. Funduscopy reveals papilledema. MRI of the brain is normal. Which of the following complications is likely to develop if this patient is left untreated?

110) A 64-year-old male is brought to the emergency department (ED) due to a sudden onset of lower extremity weakness. He was swimming in the pool, when he suddenly felt his legs become weak. He then felt that his legs had no more strength, and he was not able to move them. He struggled out of the pool, called EMS, and was rushed to the ED. He denies any trauma, loss of consciousness, visual or speech problems. He cannot pass urine. He has a long history of back problems. The physical examination reveals significant motor weakness in both legs, and numbness from the buttocks to the soles of the feet. He has no sensation in the perineal area. The rectal tone is absent. A Foley catheter is placed, and 800 cc of urine is collected. What is the best treatment for this patient?

111) A 78-year-old woman is brought to the emergency department with agitation and insomnia. She screams out loudly and tries to run away while being examined. She is a nursing home resident and has a recent medical history that includes severe memory loss, gait disturbance and urinary incontinence. Her chronic medical issues include hypertension, diabetes mellitus, atrial fibrillation, peptic ulcer disease and chronic pyelonephritis. Her blood pressure is 160/100 mmHg and heart rate is 95/min and irregular. ECG reveals atrial fibrillation but no acute ischemic changes. Laboratory investigations reveal the following: Hematocrit 41%, WBC count 9,000/mm3, Platelets 160,000/mm3, Sodium 137 meq/L, Potassium 5.5 meq/L, Chloride 95 meq/L, Creatinine 1.4 mg/dl, BUN 25 mg/dl. Urinalysis shows trace protein, numerous leukocytes and occasional erythrocytes. Which of the following is the best initial treatment for this patient?

112) A 79-year-old woman is brought to the emergency department due to a suspected cerebrovascular accident on her right side. She complains of diffuse paresthesias and tingling in her right hand. She did not lose consciousness. The physical examination reveals normal speech, symmetric deep tendon reflexes (2/4 on both upper extremities, 2/4 both patellar reflexes, and 0/4 both Achilles reflexes), a cold right hand, and undetectable arterial radial pulse. Tinel and Phalen's signs are negative. The rest of the examination is normal. What is the most appropriate next step in the management of this patient?

114) A 24-year-old woman presents to the emergency department (ED) complaining of right eye pain and blurry vision since waking up this morning. She states that the pain began after taking out contact lenses that were in her eyes for over 1 week. Her blood pressure (BP) is 120/75 mm Hg, heart rate (HR) is 75 beats per minute, temperature is 99.1°F, and respiratory rate (RR) is 16 breaths per minute. Her right and left eye visual acuity is 20/60 and 20/20, respectively. Her conjunctivae are injected. The slitlamp examination reveals a large area of fluorescein uptake over the visual axis. Which of the following is the most appropriate therapy?

115) A 60-year-old woman presents to the ED complaining of pain in her right eye and burning sensation over half of her forehead and scalp. On physical examination, you notice a patch of grouped vesicles on an erythematous base located in a dermatomal distribution on her scalp and forehead. There are also a few vesicles located at the tip of the patient’s nose. Her visual acuity is 20/20 bilaterally, heart is without murmurs, lungs are clear, abdomen is soft, and there are no gross findings on neurologic examination. Which of the following is the most concerning complication of this patient’s clinical presentation?

116) A 24-year-old woman presents to the ED at 4 AM with severe left eye pain that woke her up from sleep. She wears soft contact lenses and does not routinely take them out to sleep. She is in severe pain and wearing sunglasses in the examination room. You give her a drop of proparacaine to treat her pain prior to your examination. On examination, her vision is at baseline and she has no afferent pupillary defect. There is some perilimbic conjunctival erythema. On fluorescein examination, a linear area on the left side of the cornea is highlighted when cobalt blue light is applied. No underlying white infiltrate is visualized. No white cells or flare are visualized in the anterior chamber. What is the most appropriate treatment for this condition?

117) A 45-year-old man lacerated his right forehead after an altercation in a local bar. Instead of seeking medical attention, the patient applied super glue to his wound. He successfully stopped the bleeding, but some of the glue got into his right eye and now he comes to the ED with difficulty opening his right eye. What is the most appropriate treatment of this patient?

118) A 12-year-old girl presents to the ED for left eye pain and swelling for 2 days. The patient has had cough, congestion, and rhinorrhea for the last week that is improving. On examination, her temperature is 100.8°F, HR 115 beats per minute, RR 12 breaths per minute, and BP 110/70 mm Hg. On eye examination, there is purple-red swelling of both upper and lower eyelids with injection of the conjunctiva. Pupils are equal and reactive to light. There is restricted lateral gaze. Visual acuity is 20/70 in the left eye and 20/25 in the right eye. The rest of the physical examination is normal. What is the most appropriate next step in management?

121) A 32-year-old man presented to the emergency department five hours ago with an acute asthma exacerbation. He has been receiving continuous albuterol nebulizer treatments since that time. He has a 20-year history of asthma but notes that recently the frequency of his attacks has increased. Presently, his blood pressure is 110/70 mmHg and heart rate is 120 and regular. On physical exam, the patient appears drowsy. Breath sounds are diminished bilaterally but there are no wheezes. The most recent ABG reveals: pH 7.32, pO2 65mmHg, pCO2 50mmHg. Which of the following is the best next step in managing this patient?

122) A 75-year-old man develops increased ventilatory requirements several days after requiring intubation for respiratory failure. X-ray of the chest shows bilateral infiltrates, and based on his ventilatory settings, the ratio of the partial arterial pressure of oxygen to the fraction of inspired oxygen (PaO2:FiO2) is 190. Which of the following is the most common underlying etiology of acute respiratory distress syndrome?

123) A 25-year-old Caucasian woman presents as a new patient after having recently moved to the neighborhood. She says that she was diagnosed with anorexia nervosa two years ago, and that her disorder resolved after intensive psychotherapy. Although her eating pattern is normal now, she is still underweight. Her menstrual cycles have been regular for the past year. She recently married and is now interested in starting a family with her husband. She asks whether her history of anorexia nervosa will affect her ability to conceive or carry a healthy child to term. Given this clinical presentation, which of the following complications is most likely?

124) A 22-year-old woman is seen in the emergency room after a suicide attempt. She swallowed 10 aspirin in the presence of her mother, with whom she had just had an argument. The patient has a long history of cutting herself superficially with razor blades, which her psychiatrist of the last 5 years confirms by telephone. The patient currently lives in a stable environment (a halfway house) where she has been for 3 years. Which of the following option is the best course of action for the physician in the emergency room?

125) A 62-year-old Caucasian female complains of frequent headaches, fatigue and recent weight loss. Her shoulder muscles feel stiff in the morning. Her ESR is 85 mm/hr. Which of the following will be the most likely complication of this patient's condition?

1) A 40-year-old female presents to the emergency room with palpitations and lightheadedness of acute onset. Also, she has experienced insomnia, fatigability, and weight loss lately. She does not smoke or consume alcohol. She is not taking any medication. Her blood pressure is 110/80 mmHg and heat rate is 120/min, irregular. Physical examination reveals lid lag and fine tremor of the outstretched hands. ECG shows atrial fibrillation with rapid ventricular response. What is the next best step in the management of this patient?

2) A 43-year-old Caucasian man with a two-year history of diabetes mellitus presents to your office for a routine. He has no complaint His medications are metformin and aspirin. He works as a computer programmer and has a sedentary lifestyle. He drinks one to two cans of beer on weekends and smokes one pack of cigarettes per day. On physical examination, his blood pressure is 153/94 mmHg and his heat rate is 82/min. His BMI is 32.5 kg/m2. The remainder of the physical examination is unremarkable. Laboratory studies reveal an HbA1c of 7.6%. At his check-up one month ago, his blood pressure was 149/92 mmHg. Which of the following interventions would be most effective for controlling his blood pressure?