A researcher is studying the morphological changes in the aging heart in healthy patients. if a patient with 20 year participant in this study and the researcher found that the patient's left ventricular ejection fraction has remained stable throughout the 20 years. Which of the following changes is most likely responsible for the preserved left ventricular ejection fraction in this patient?

Question

A researcher is studying the morphological changes in the aging heart in healthy patients. if a patient with 20 year participant in this study and the researcher found that the patient's left ventricular ejection fraction has remained stable throughout the 20 years.  Which of the following changes is most likely responsible for the preserved left ventricular ejection fraction in this patient?

Quizplus · Accepted Answer

Eductional Objective: Cardiomyocyte hypertrophy (ie, concentric left ventricular hypertrophy) occurs with age to allow for maintenance of left ventricular contractility and ejection fraction despite cardiomyocyte dropout and increased left ventricular afterload (due to reduced aortic compliance).

A Researcher Is Studying the Morphological Changes in the Aging