The dicrotic notch on the aortic pressure curve is caused by_________________?
Correct answer: B. Closure of the aortic valve
- A. Closure of the pulmonary valve
- B. Closure of the aortic valve
- C. Rapid filling of the left ventricle
- D. Contraction of the atriaOrder DNA Kits
Explanation
The dicrotic notch is produced when the aortic valve briefly closes at the start of ventricular diastole. Elastic recoil of the aorta and a short backflow of blood create the notch in the pressure tracing.
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