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Which of the following is TRUE about heart failure, either left or right heart failure?

Group of answer choices

In left sided heart failure the stroke volume increases causing the ejection fraction to increase.

Diastolic dysfunction is the inability of the ventricle to pump out blood into the circulation.

Systolic dysfunction is failure of the ventricle to fill with blood adequately.

The contractility of the right ventricle decreases in right sided heart failure resulting in back up of fluid.

1 answer

Let's evaluate each of the statements regarding heart failure:

  1. In left sided heart failure the stroke volume increases causing the ejection fraction to increase.

    • This statement is FALSE. In left-sided heart failure, often stroke volume decreases, leading to a decrease in ejection fraction, especially in systolic heart failure.

  2. Diastolic dysfunction is the inability of the ventricle to pump out blood into the circulation.

    • This statement is FALSE. Diastolic dysfunction refers to the inability of the ventricle to fill properly during diastole, not the inability to pump out blood.

  3. Systolic dysfunction is failure of the ventricle to fill with blood adequately.

    • This statement is FALSE. Systolic dysfunction refers to the heart's reduced ability to contract and pump blood out, leading to decreased stroke volume.

  4. The contractility of the right ventricle decreases in right sided heart failure resulting in back up of fluid.

    • This statement is TRUE. In right-sided heart failure, decreased contractility of the right ventricle can lead to a backup of fluid in the systemic circulation, resulting in symptoms such as edema.

Thus, the TRUE statement is the last one: The contractility of the right ventricle decreases in right sided heart failure resulting in back up of fluid.