Which of the following statements about left-sided heart failure is true?

The correct statement regarding left-sided heart failure is that it typically results in lower ejection fractions. In left-sided heart failure, the heart's ability to pump blood effectively is compromised, which often leads to a reduction in the ejection fraction. Ejection fraction is a measure of how much blood the left ventricle pumps out with each contraction compared to the total amount of blood in the ventricle at the end of filling. When the ejection fraction is lower, it indicates that the heart is not pumping efficiently, which is a hallmark sign of left-sided heart failure.

This condition can result from various factors, including myocardial infarction, hypertension, or cardiomyopathy. The impaired pumping efficiency leads to a backlog of blood in the left atrium and the pulmonary circulation, causing symptoms such as difficulty breathing and pulmonary congestion, which are characteristic of left-sided heart failure.

In contrast, increased peripheral resistance is not a defining characteristic of left-sided heart failure itself; it may occur as a consequence of systemic hypertension which can contribute to heart failure but is not inherently a feature of left-sided heart failure. Decreased pulmonary pressure generally does not occur because left-sided heart failure often leads to increased pulmonary congestion and pressure due to fluid backing up in the lungs. Lastly