Left ventricular dysfunction in hypertensive patients with Type 2 diabetes mellitus

Area of Science:

• Cardiology
• Diabetology
• Nephrology

Background:

• Hypertension and Type 2 diabetes are major risk factors for cardiovascular disease.
• Left ventricular dysfunction can occur even in asymptomatic patients with these conditions.
• Early detection of subclinical cardiac changes is crucial for risk stratification.

Purpose of the Study:

• To assess left ventricular longitudinal function in hypertensive patients with Type 2 diabetes and preserved ejection fraction.
• To identify associations between cardiac function, glycemic control, and clinical markers.
• To investigate factors contributing to diastolic dysfunction in this population.

Main Methods:

• Seventy hypertensive patients with Type 2 diabetes (ejection fraction > 0.55) and 35 controls were studied.
• Left ventricular longitudinal function was evaluated using tissue Doppler imaging (strain rate and peak systolic velocities).
• Correlations were analyzed between cardiac parameters, HbA1c, fructosamine, left ventricular mass, and other clinical markers.

Main Results:

• Hypertensive patients with diabetes showed significantly reduced systolic strain rate and peak systolic velocities compared to controls.
• Systolic strain rate correlated with left ventricular mass, HbA1c, and fructosamine levels.
• Diastolic dysfunction was associated with higher urine albumin, heart rate, diastolic blood pressure, and a higher prevalence of non-dipping blood pressure.

Conclusions:

• Longitudinal left ventricular systolic function is impaired in hypertensive patients with Type 2 diabetes, linked to hyperglycemia and left ventricular hypertrophy.
• Diastolic dysfunction is associated with elevated diastolic blood pressure, non-dipping patterns, and increased urinary albumin excretion.
• These findings underscore the subclinical cardiac impact of combined hypertension and diabetes.