Increased left ventricular non-uniformity in hypertensive patients with angina

Area of Science:

• Cardiology
• Cardiovascular Physiology
• Medical Imaging

Background:

• Effort angina is often associated with coronary artery disease.
• Left ventricular diastolic function is crucial for adequate cardiac output.
• Hypertension is a major risk factor for cardiovascular diseases.

Purpose of the Study:

• To investigate the effect of hypertension on left ventricular diastolic function in patients experiencing effort angina.
• To compare diastolic parameters between hypertensive and normotensive patients with isolated left anterior descending coronary artery stenosis.

Main Methods:

• Radionuclide ventriculography was utilized to assess cardiac function.
• The study included 14 patients with isolated left anterior descending coronary artery stenosis and 7 healthy volunteers.
• Diastolic function was evaluated by measuring global and regional peak filling rates and the left ventricular asynchronous index.

Main Results:

• No significant differences were observed in global or regional peak filling rates between hypertensive and normotensive patients.
• The left ventricular asynchronous index was significantly higher in hypertensive patients (87 +/- 20 ms) compared to normotensive patients (59 +/- 22 ms).
• A significant correlation was found between the left ventricular asynchronous index and left ventricular mass index in all participants.

Conclusions:

• Hypertension exacerbates diastolic non-uniformity of the left ventricle in individuals with effort angina.
• Elevated left ventricular asynchronous index in hypertensive patients suggests impaired diastolic relaxation and filling.
• These findings underscore the detrimental effects of hypertension on cardiac diastolic performance in the context of ischemic heart disease.