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A 48-year-old man with chronic alcohol use has easy bruising and prolonged bleeding after minor trauma. Labs show prolonged PT and aPTT with low albumin and elevated bilirubin. Which mechanism best explains his coagulopathy?  

A 25-year-old woman presents with fever, dehydration, and HR 128/min. ECG shows sinus tachycardia. Which underlying driver is most consistent with sinus tachycardia physiology?

A patient has organized electrical activity on the monitor but no palpable pulse after a massive pulmonary embolism. What does the ECG most directly represent?

Which phase of the ventricular action potential is most responsible for excitation–contraction coupling?

A 29-year-old runner is noted to have intermittent sinus pauses on telemetry during sleep but otherwise normal cardiac structure. Which statement best explains why sinus node disorders can strongly affect the overall rhythm of the heart?

A patient with cirrhosis has generalized edema. Which Starling force change is most central?  

A patient’s BP is 160/98 on repeated visits. Which statement best links hypertension to atherosclerotic disease?

A 19-year-old with fever, posterior cervical lymphadenopathy, exudative pharyngitis, and atypical lymphocytes likely has EBV mononucleosis. The atypical lymphocytes are primarily:

A patient with acute leukemia develops dyspnea and confusion with very high WBC count. Which complication is most likely?

A patient is diagnosed with lymphoma. Which finding most strongly supports Hodgkin lymphoma rather than non-Hodgkin lymphoma?