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Questions and Answers
Which of the following best defines the cardiac cycle?
Which of the following best defines the cardiac cycle?
- The sequence of electrical and mechanical events occurring in the heart during a single beat. (correct)
- The changes in volume, pressure, and flow in different chambers of the heart.
- The recording of electrical activities in the form of ECG.
- The resulting changes in volume, pressure, and flow in the aorta.
What is the purpose of drawing the changes in left atrial and ventricular pressures, aortic pressure, left ventricular volume, aortic blood flow, JVP, heart sounds, and ECG of a cardiac cycle on the same time scale?
What is the purpose of drawing the changes in left atrial and ventricular pressures, aortic pressure, left ventricular volume, aortic blood flow, JVP, heart sounds, and ECG of a cardiac cycle on the same time scale?
- To measure the exact duration of each phase of the cardiac cycle.
- To compare the changes in different parameters between different cardiac cycles.
- To identify abnormalities in the heart's electrical activities.
- To visualize the relationship between different parameters during the cardiac cycle. (correct)
Which of the following best describes the pressure-volume relationship of the left ventricle?
Which of the following best describes the pressure-volume relationship of the left ventricle?
- As ventricular volume decreases, ventricular pressure decreases.
- As ventricular volume increases, ventricular pressure decreases.
- As ventricular volume decreases, ventricular pressure increases.
- As ventricular volume increases, ventricular pressure increases. (correct)
What are the waves of JVP and what causes them?
What are the waves of JVP and what causes them?
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What is the significance of heart sounds?
What is the significance of heart sounds?
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