System-based differential construction — MCQs

System-based differential construction — MCQs

System-based differential construction — MCQs
10 questions
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Q1

A 50-year-old woman presents with sudden onset right upper quadrant abdominal pain. She says her symptoms started 6 hours ago after she had dinner. She describes the pain as cramping, radiating to her shoulders. She had similar episodes in the past, but they were less severe and resolved with over-the-counter analgesics. Her medical history is significant for hypertension and coronary artery disease. Her current medications include warfarin, hydrochlorothiazide, and fibrates. Her temperature is 37.7°C (99.9°F), blood pressure is 110/80 mm Hg, pulse is 80/min, and respirations are 15/min. Abdominal exam reveals severe right upper quadrant tenderness, and she catches her breath when palpated deeply just below the right costal margin. Surgical consult determines her to be surgically unfit for any intervention due to her high risk of bleeding. After treating her pain with appropriate analgesics, which of the following is the next best step in the management of this patient?

Q2

A 25-year-old man comes to the physician for severe back pain. He describes the pain as shooting and stabbing. On a 10-point scale, he rates the pain as a 9 to 10. The pain started after he lifted a heavy box at work; he works at a supermarket and recently switched from being a cashier to a storekeeper. The patient appears to be in severe distress. Vital signs are within normal limits. On physical examination, the spine is nontender without paravertebral muscle spasms. Range of motion is normal. A straight-leg raise test is negative. After the physical examination has been completed, the patient asks for a letter to his employer attesting to his inability to work as a storekeeper. Which of the following is the most appropriate response?

Q3

A 52-year-old man comes to the physician because of a 3-week history of a cough and hoarseness. He reports that the cough is worse when he lies down after lunch. His temperature is 37.5°C (99.5°F); the remainder of his vital signs are within normal limits. Because the physician has recently been seeing several patients with the common cold, the diagnosis of a viral upper respiratory tract infection readily comes to mind. The physician fails to consider the diagnosis of gastroesophageal reflux disease, which the patient is later found to have. Which of the following most accurately describes the cognitive bias that the physician had?

Q4

A 66-year-old man is brought to the emergency department because of shortness of breath and confusion. His pulse is 98/min, and blood pressure is 109/73 mm Hg. He is oriented to person but not time or place. A graph of his breathing pattern and oxygen saturation is shown. Which of the following additional findings is most likely present in this patient?

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Q5

A 72-year-old woman is brought to the emergency department with dyspnea for 2 days. She is on regular hemodialysis at 3 sessions a week but missed her last session due to an unexpected trip. She has a history of congestive heart failure. After urgent hemodialysis, the patient’s dyspnea does not improve as expected. The cardiologist is consulted. After evaluation of the patient, he notes in the patient’s electronic record: “the patient does not have a chronic heart condition and a cardiac cause of dyspnea is unlikely.” The following morning, the nurse finds the cardiologist’s notes about the patient not having congestive heart failure odd. The patient had a clear history of congestive heart failure with an ejection fraction of 35%. After further investigation, the nurse realizes that the cardiologist evaluated the patient’s roommate. She is an elderly woman with a similar first name. She is also on chronic hemodialysis. To prevent similar future errors, the most appropriate strategy is to use which of the following?

Q6

A 67-year-old man presents to the emergency department with confusion. The patient is generally healthy, but his wife noticed him becoming progressively more confused as the day went on. The patient is not currently taking any medications and has no recent falls or trauma. His temperature is 102°F (38.9°C), blood pressure is 126/64 mmHg, pulse is 120/min, respirations are 17/min, and oxygen saturation is 98% on room air. Physical exam is notable for a confused man who cannot participate in a neurological exam secondary to his confusion. No symptoms are elicited with flexion of the neck and jolt accentuation of headache is negative. Initial laboratory values are unremarkable and the patient's chest radiograph and urinalysis are within normal limits. An initial CT scan of the head is unremarkable. Which of the following is the best next step in management?

Q7

A 27-year-old soldier is brought to the emergency department of a military hospital 20 minutes after being involved in a motor vehicle accident during a training exercise. He was an unrestrained passenger. On arrival, he has shortness of breath and chest pain. He appears pale and anxious. His temperature is 37°C (98.6°F), pulse is 110/min, respirations are 20/min, and blood pressure is 100/65 mm Hg. He is alert and oriented to person, place, and time. Examination shows pale conjunctivae and mucous membranes. There is bruising on the chest, extremities, and abdomen. The lungs are clear to auscultation. He has normal heart sounds and flat neck veins. The abdomen is flat, soft, and mildly tender. The remainder of the physical examination shows no abnormalities. High-flow oxygen is applied, and intravenous fluid resuscitation is begun. A chest x-ray is obtained. Which of the following is the most appropriate next step in management?

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Q8

A 28-year-old male presents to his primary care physician with complaints of intermittent abdominal pain and alternating bouts of constipation and diarrhea. His medical chart is not significant for any past medical problems or prior surgeries. He is not prescribed any current medications. Which of the following questions would be the most useful next question in eliciting further history from this patient?

Q9

A 65-year-old man is admitted to the hospital because of a 1-month history of fatigue, intermittent fever, and weakness. Results from a peripheral blood smear taken during his evaluation are indicative of possible acute myeloid leukemia. Bone marrow aspiration and subsequent cytogenetic studies confirm the diagnosis. The physician sets aside an appointed time-slot and arranges a meeting in a quiet office to inform him about the diagnosis and discuss his options. He has been encouraged to bring someone along to the appointment if he wanted. He comes to your office at the appointed time with his daughter. He appears relaxed, with a full range of affect. Which of the following is the most appropriate opening statement in this situation?

Q10

A 43-year-old woman presents to the neurology clinic in significant pain. She reports a sharp, stabbing electric-like pain on the right side of her face. The pain started suddenly 2 weeks ago. The pain is so excruciating that she can no longer laugh, speak, or eat her meals as these activities cause episodes of pain. She had to miss work last week as a result. Her attacks last about 3 minutes and go away when she goes to sleep. She typically has 2–3 attacks per day now. The vital signs include: blood pressure 132/84 mm Hg, heart rate 79/min, and respiratory rate 14/min. A neurological examination shows no loss of crude touch, tactile touch, or pain sensations on the right side of the face. The pupillary light and accommodation reflexes are normal. There is no drooping of her mouth, ptosis, or anhidrosis noted. Which of the following is the most likely diagnosis?

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