[Changes in left ventricular function in elderly hypertension patients]

Area of Science:

• Cardiology
• Internal Medicine
• Physiology

Background:

• Essential hypertension (EH) is a prevalent cardiovascular condition.
• Age-related changes can affect cardiac function in hypertensive individuals.
• Understanding left ventricular (LV) function in elderly hypertensive patients is crucial for management.

Purpose of the Study:

• To investigate systolic function and diastolic filling in elderly patients with stage-II essential hypertension.
• To assess the compensatory role of the left atrium and left ventricle in elderly EH patients.
• To determine the threshold of left ventricular mass index associated with preserved cardiac output.

Main Methods:

• Echocardiographic assessment of 81 stage-II essential hypertension patients and 20 healthy controls.
• Evaluation of left ventricular systolic function, including contractility and relaxation velocity.
• Analysis of left ventricular diastolic filling patterns and atrial contribution.

Main Results:

• EH patients exhibited impaired LV systolic function, with reduced contractility in early systole.
• Altered LV filling patterns were observed, including decreased rapid filling and increased slow filling/atrial contribution.
• Elderly EH patients showed reduced compensatory role of the left atrium and less pronounced LV hypertrophy compared to younger patients.
• Compensatory LV function was maintained up to a LV mass index of 170 g/m2, beyond which cardiac output decreased.

Conclusions:

• Stage-II essential hypertension significantly impacts LV systolic and diastolic function in elderly patients.
• Compensatory mechanisms in the aging heart have limitations, with reduced atrial contribution and hypertrophy.
• Left ventricular mass index is a critical indicator of preserved cardiac function, with values >170 g/m2 predicting reduced cardiac output in hypertensive individuals.