As part of their orientation to a cardiac care unit, a group of recent nursing graduates is receiving a refresher in cardiac physiology from the unit educator. Which teaching point best captures a component of cardiac function?

The options

A) "Efficient heart function requires that the ventricles do not retain any blood at the end of the cardiac cycle."

B) "Recall that the heart sounds that we listen to as part of our assessments are the sounds of the myocardium contracting."

C) "The diastolic phase is characterized by relaxation of ventricles and their filling with blood."

D) "Aortic pressure will exceed ventricular pressure during systole."

The CORRECT ANSWER IS C)

C) "The diastolic phase is characterized by relaxation of ventricles and their filling with blood."

Explanation:

Diastole is connected with ventricular filling and relaxation. Cardiac production is not 100% or in proximity to been 100% with every cardiac cycle, as the heart sounds are linked with valve closure. Ventricular pressure surpasses that of the aorta in the course of the systole.

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