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A patient has a large mass on his heart valve and blood cultures are positive for Staphylococcus aureus. Which one of the following treatment courses is most appropriate? Tx = treatment.

A 35 yo woman presents with shortness of breath, JVD, tachycardia, rales, hepatomegaly, and peripheral edema. Other findings on physical examination include exophthalmos and generalized thyromegaly (without any nodules). In the last few weeks, she has lost 10 lbs without dieting, sleeps poorly, and has developed irregular menses. Her co-workers describe her as emotionally “irritable.” What is the underlying pathophysiology of her cardio-pulmonary findings?

Which one of the following septal openings arises first during formation of the heart chambers?

The image shows a section of lung stained with H&E. Which cell expresses selectins that are essential for the extravasation of leukocytes?

An 82 yo woman presents with acute shortness of breath and cough. She has been bedridden because she recently broke her hip and underwent surgery. Which one of the following conditions is the least likely explanation for her shortness of breath and cough?

What is the mode of action of milrinone?

Pictured is a sound tracing of a heart murmur. Identify the murmur.

Given the ECG tracing and the following information that is characteristic of this abnormality [QRS duration >120 msec (Incomplete = 100 to 120 msec), terminal R wave (positive) in V1 (usually rSR’) and prominent terminal S waves in in leads I, aVL, and V6], what is the diagnosis?

You are told that a teenage boy’s left ventricle (LV) is pumping 8 L/minute but only 5 L/min are entering into the ascending aorta. The right ventricle (RV) and the left atrium (LA) are also pumping 8 L/min but the right atrium (RA) is only pumping 5 L/minute. Which one of the following explanations is most likely?

An autopsy is performed on a 56 yo man who died suddenly. His coronary artery contains a thrombus completely obstructing the lumen of the left anterior descending artery. What initiated the thrombosis?