medicine beginner 10 sample questions

Emergency Medicine MCQ Practice Test

Acute condition stabilization

Q1. A 35-year-old woman presents to the emergency department with a 2-hour history of severe headache, confusion, and fever. She has a history of migraines and is on topiramate. Her vitals are BP 160/100, HR 110, and T 38.5°C. Laboratory results show a slightly elevated WBC count and a positive urine dipstick for ketones. Which of the following is the most appropriate initial treatment?

Explanation: The patient's presentation is concerning for a hypertensive emergency and possible neurological involvement. The elevated blood pressure, headache, confusion, and fever warrant immediate management of the hypertension and investigation into the cause of the neurological symptoms. IV labetalol is a suitable medication to rapidly lower blood pressure. A CT scan of the head is indicated to rule out intracranial hemorrhage or other structural causes of the headache and altered mental status. The ketones in urine are less concerning than the other symptoms and do not dictate immediate treatment.

Q2. A 35-year-old woman presents to the emergency department with a 2-day history of severe headache, fever, and confusion. She has a history of systemic lupus erythematosus (SLE) and is on long-term corticosteroid therapy. Laboratory results show a leukocyte count of 18,000/uL, platelet count of 80,000/uL, and a positive Coombs test. Which of the following is the most appropriate initial treatment for this patient?

Explanation: This patient is likely experiencing SLE-related thrombotic thrombocytopenic purpura (TTP), which is a life-threatening complication of SLE. Plasmapheresis is the most appropriate initial treatment to remove autoantibodies and prevent further thrombosis.

Q3. A patient with severe symptomatic hyponatremia (confusion, seizures) should initially be treated with:

Explanation: Severe symptomatic hyponatremia is treated with a bolus of intravenous 3% hypertonic saline to raise serum sodium and stop seizures or cerebral edema. D5W lowers sodium further; furosemide and demeclocycline are not initial therapy for acute symptomatic cases.

Q4. What is the immediate first-line treatment for anaphylaxis presenting with stridor and respiratory distress?

Explanation: Anaphylaxis is treated immediately with intramuscular epinephrine (typically 0.5 mg of 1:1000 in the thigh). The endotracheal route is an obsolete last-resort route only during cardiac arrest intubation; antihistamines and albuterol are adjuncts, not first-line.

Q5. A 35-year-old woman presents to the emergency department with a 2-hour history of severe headache, fever, and confusion. She has a history of migraines but this episode is different. Her blood pressure is 220/120 mmHg. Which of the following is the most appropriate initial treatment?

Explanation: The patient's presentation is suggestive of a hypertensive emergency, but the first step is to rule out a hemorrhagic stroke, which would be a contraindication for antihypertensive therapy. A non-contrast head CT is the most appropriate initial imaging study.

Q6. A 35-year-old woman presents to the emergency department after a motor vehicle collision. She is found to have a thoracic spine fracture and is at risk for spinal cord injury. Which of the following medications is most appropriate for her management?

Explanation: Ketamine is the preferred choice for sedation in patients with spinal cord injuries because it does not depress respiration or circulation, and it can help to maintain blood pressure. Methoxyflurane is an older anesthetic agent that can cause renal toxicity and is not preferred for pain control. Naloxone is used to reverse opioid overdose, and succinylcholine is a depolarizing muscle relaxant that can cause hyperkalemia in patients with spinal cord injuries.

Q7. A hospital without PCI capability gives a patient with an inferior STEMI a thrombolytic. What is the guideline-recommended next step?

Explanation: After fibrinolysis, guidelines recommend transfer to a PCI-capable hospital for angiography (pharmacoinvasive strategy) to assess reperfusion and manage reocclusion. Simple monitoring understreatments an acute MI.

Q8. A 35-year-old woman presents to the emergency department with a 2-day history of severe headache, fever, and confusion. She has a history of migraines but this episode is different. Her vital signs are: temperature 38.5°C, blood pressure 160/90 mmHg, pulse 110 bpm, and respiratory rate 24 breaths/min. A non-contrast CT scan of the head shows no evidence of hemorrhage or infarction. What is the appropriate initial treatment for this patient?

Explanation: This patient's presentation is suggestive of aseptic meningitis, likely caused by viral or bacterial pathogens. A lumbar puncture is necessary to obtain cerebrospinal fluid for analysis, which will help guide further management and treatment. The other options are not appropriate for this patient's presentation.

Q9. A 25-year-old patient presents to the emergency department after a motor vehicle collision with a suspected diagnosis of a thoracic aortic injury. Which of the following medications is most likely to be administered to this patient?

Explanation: In the setting of a suspected thoracic aortic injury, the administration of nitroprusside is often used to control blood pressure and reduce the risk of further aortic damage. This is because nitroprusside is a potent vasodilator that can be titrated to achieve the desired blood pressure, and it is often used in the management of acute aortic dissection.

Q10. A 35-year-old woman with a history of systemic lupus erythematosus (SLE) on long-term corticosteroid therapy presents to the emergency department with a 2-day history of severe headache, fever, and confusion. Laboratory results show a low platelet count (thrombocytopenia) and elevated liver enzymes. She admits to taking an excessive amount of acetaminophen over the past 24 hours. Which of the following is the most appropriate initial treatment for this patient?

Explanation: This patient's presentation of severe headache, fever, confusion, thrombocytopenia, and elevated liver enzymes, along with the history of excessive acetaminophen intake, strongly suggests acetaminophen-induced liver injury. N-acetylcysteine (NAC) is the antidote for acetaminophen overdose and should be administered promptly, along with supportive care.

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Emergency Medicine MCQ Practice Test | Mind Hustle