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Published on: February 16, 2016
Assessment of left-ventricular mass and its response to antihypertensive treatment
Insights
Essential hypertension significantly correlates with left-ventricular (LV) mass. Antihypertensive therapy effectively reduces both blood pressure and LV mass in patients with hypertension.
Area of Science:
- Cardiology
- Hypertension Research
- Diagnostic Imaging
Background:
- Essential hypertension is a common condition associated with cardiovascular complications.
- Left-ventricular (LV) hypertrophy is a significant predictor of cardiovascular events in hypertensive patients.
- Echocardiography is a key tool for assessing cardiac structure and function.
Purpose of the Study:
- To investigate the relationship between blood pressure and left-ventricular mass in patients with essential hypertension.
- To evaluate the effect of antihypertensive therapy on blood pressure and LV mass.
Main Methods:
- M-mode echocardiography and continuous intra-arterial ambulatory blood pressure monitoring were used.
- Left-ventricular mass indices were calculated from echocardiographic data.
- Patients were followed up with repeat echocardiography and blood pressure measurements.
Main Results:
- Mean 24-hour systolic blood pressure showed a significant correlation with echocardiographic LV mass.
- Antihypertensive therapy led to significant reductions in both blood pressure and LV mass index compared to untreated patients.
- A strong correlation was observed between the reduction in systolic blood pressure and LV mass index in the treated group.
Conclusions:
- Systolic blood pressure plays a crucial role in the pathogenesis of left-ventricular hypertrophy.
- Echocardiographically assessed changes in LV mass correlate with blood pressure changes in hypertensive individuals.
- Antihypertensive treatment can reverse cardiac structural changes associated with hypertension.
Abstract:
50 patients with mild to moderate essential hypertension underwent M-mode echocardiography and continuous intra-arterial ambulatory monitoring of blood pressure. Indices of left-ventricular (LV) mass were derived from echocardiographic data by standard formulae. 43 of the patients were followed up for 12+/-7 months with repeat M-mode echocardiography, and casual blood-pressure measurements. 25 of these patients received antihypertensive therapy and 18 were untreated. Mean 24 h systolic blood pressure was significantly correlated with echocardiographic LV mass; mean 24 h diastolic blood pressure was also correlated, but the relation was weaker. In the treated group there was a significantly greater fall in blood pressure and LV mass index than in the untreated group, and there was a significant correlation between the fall in systolic blood pressure and the fall in LV mass index in the treated group. Systolic blood pressure appears to be an important factor in the pathogenesis of LV hypertrophy, and in hypertensive patients changes in LV mass assessed by echocardiography correlate with changes in blood pressure.
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