A nurse is discussing how beta blockers work to decrease blood pressure with a nursing student. Which statement by the student indicates a need for further teaching?
a. "Beta blockers block the actions of angiotensin II."
b. "Beta blockers decrease heart rate and contractility."
c. "Beta blockers decrease peripheral vascular resistance."
d. "Beta blockers decrease the release of renin."
ANS: A
Beta blockers reduce the release of renin by blockade of beta1 receptors on juxtaglomerular cells in the kidney, which reduces angiotensin II-mediated vasoconstriction, but do not block the actions of angiotensin II directly. Beta blockers decrease heart rate and cardiac contractility, decrease peripheral vascular resistance, and decrease the release of renin.
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