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Biostatistics & Epidemiology Researchers want to determine whether the proportion of patients achieving remission (yes/no) differs among patients treated at three different hospitals. The d…

Biostatistics & Epidemiology Two continuous variables are plotted for a sample of patients, as shown. Which conclusion is best supported?

Emergency Medicine A 55-year-old man is admitted with the sudden onset of severe interscapular back pain. CT angiography shows a dissection of the descending thoracic aorta beginn…

Emergency Medicine A 19-year-old woman is brought to the emergency department 8 hours after ingesting a large number of acetaminophen tablets in a suicide attempt. She is asymptom…

Ethics & Professionalism A 24-year-old woman requests antibiotics for 3 days of nasal congestion, sore throat, low-grade fever, and cough. Examination shows clear rhinorrhea and mild ph…

Ethics & Professionalism A 47-year-old man with newly diagnosed type 2 diabetes mellitus is being started on metformin. He completed schooling through the eighth grade and appears to ha…

Family Medicine A 40-year-old man reports that his father was diagnosed with colorectal cancer at age 52. He has no symptoms. Which of the following is the most appropriate scr…

Family Medicine A 45-year-old factory worker reports difficulty hearing. His audiogram is shown, demonstrating a bilateral sensorineural dip centered at 4000 Hz with recovery a…

Internal Medicine A 61-year-old man has an electrocardiogram before elective surgery. He is asymptomatic. The rhythm strip shows a regular rhythm at 72/min in which every P wave …

Internal Medicine A 62-year-old man with a 40-pack-year smoking history reports chronic dyspnea and cough. Spirometry produces the flow-volume loop shown (patient solid, predicte…

Neurology A 33-year-old man has migraine headaches occurring about six times per month, each disabling him for most of a day despite effective acute treatment with a trip…

Neurology A 66-year-old man develops the visual-field defect shown after a stroke. Which of the following is the most likely location of the responsible lesion?

Obstetrics & Gynecology A 22-year-old sexually active woman presents with lower abdominal pain and fever. Examination shows cervical motion tenderness, bilateral adnexal tenderness, an…

Obstetrics & Gynecology A 29-year-old woman at 39 weeks gestation is in active labor with oxytocin augmentation. Her cardiotocograph is shown; the fetal heart rate decelerations reach …

Pediatrics An 8-year-old boy is seen for a well-child visit. His weight has crossed from the 40th percentile to below the 3rd percentile over several years, while height t…

Psychiatry A 48-year-old woman insists that a coworker is secretly in love with her despite his repeated denials and a restraining order. For 10 months she has sent him gi…

Psychiatry A 20-year-old college student is brought in after 10 weeks of paranoid delusions that his professors are conspiring to fail him, auditory hallucinations, and di…

Surgery A 22-year-old man is brought to the emergency department after a bicycle crash with left flank impact. He has left upper quadrant pain and left lower rib fractu…

Surgery A 45-year-old man is brought to the emergency department after a motor vehicle collision. He has right upper quadrant pain. After resuscitation, pulse is 96/min…

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