Quiz Week 03 - 1 of 18 The diagram above shows diastolic...

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1 of 18 The diagram above shows diastolic pressure-volume relationships for the left ventricle from three patients (X, Y, and Z), all of whom have the same cardiac output and heart rate. The black circle on each curve represents that patient’s end- diastolic pressure and volume at rest. A. End-systolic volume is greatest in patient X B. Ejection fraction is greatest in patient Z C. Left ventricular contractility is the same in all three patients D. Patient Z has the lowest left ventricular compliance at the resting end-diastolic pressure E. Patient Z probably has concentric (pressure overload) ventricular hypertrophy (e.g., due to aortic stenosis) Question 2 of 18 If an intervention decreases left ventricular (LV) end-systolic volume without changing LV end-systolic pressure, this means that the intervention: A. Decreased LV contractility B. Increased LV contractility C. Did not change LV contractility Question 3 of 18 You are in charge of a primary care practice that is the “medical home” for 5,000 adults. Using your electronic medical records, you see that in the last year, 50 patients in your practice had first heart attacks. From the medical literature, you know that hypertension is an important and modifiable characteristic to target to prevent heart attacks, but you want to evaluate its impact in your own practice. You collect the following data from the past year:
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The relative risk of a hypertensive patient having a heart attack compared to a non-hypertensive patient is: A. 1.5 B. 0.666 C. 0.5 D. 0.0125 Question 4 of 18 You are in charge of a primary care practice that is the “medical home” for 5,000 adults. Using your electronic medical records, you see that in the last year, 50 patients in your practice had first heart attacks. From the
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