Cardiology Quiz #10: Pressure-Volume Loops and Cardiac Cycle

1. A 60-year-old man with a history of hypertension is evaluated for shortness of breath. An echocardiogram shows left ventricular hypertrophy. Which alteration in the pressure-volume loop is most likely seen in this patient? 

Question 1 of 5

2. During a cardiac cycle, the point at which the aortic valve opens is characterized by which of the following changes in a pressure-volume loop? 

Question 2 of 5

3. A 25-year-old woman is diagnosed with mitral valve regurgitation. How would this condition appear on her left ventricular pressure-volume loop? 

Question 3 of 5

4. During a physiology lecture, a professor explains the phase of the cardiac cycle associated with the lowest oxygen consumption by the heart. This phase corresponds to which segment of the pressure-volume loop? 

Question 4 of 5

5. A study is conducted to evaluate the effects of preload on cardiac output in healthy volunteers. Which change in the pressure-volume loop would indicate an increase in preload? 

Question 5 of 5


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