A Nursing Student Asks a Nurse How Beta Blockers Increase

question 11

Multiple Choice

A nursing student asks a nurse how beta blockers increase the oxygen supply to the heart in the treatment of anginal pain. The nurse tells the student that beta blockers:

• A) dilate arterioles to improve myocardial circulation.
• B) improve cardiac contractility, which makes the heart more efficient.
• C) increase arterial pressure to improve cardiac afterload.
• D) increase the time the heart is in diastole.

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Definitions:

Predicted Values

In statistics, these are the estimated outcomes based on a regression model or other predictive model.

Coefficient of Determination

A statistical measure represented by R² that assesses the extent of variance in a dependent variable that is predictable from the independent variable(s).

Regression Model

A statistical framework that predicts the connection between a dependent variable and one or several independent variables.

Predictors

Variables used in statistical models to forecast outcomes or trends.