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Strict fluid volume control and left ventricular hypertrophy in hypertensive patients on chronic haemodialysis: a
1Department of Nephrology, Firat University Medical School, Elazig, Turkey. igunal@yahoo.com
Insights
Strict fluid volume control in hemodialysis patients effectively reduces left ventricular hypertrophy (LVH) and improves cardiac function. This approach is superior to solely managing blood pressure without addressing fluid overload.
Area of Science:
- Nephrology
- Cardiology
- Internal Medicine
Background:
- Left ventricular hypertrophy (LVH) is a prevalent complication in patients undergoing hemodialysis.
- Volume overload and hypertension are key contributors to LVH in this population.
Purpose of the Study:
- To compare the effects of strict fluid volume control versus antihypertensive drug therapy on left ventricular mass and cardiac function in hemodialysis patients.
- To determine the most effective strategy for managing LVH in hemodialysis patients.
Main Methods:
- Three groups of hemodialysis patients were studied: strict salt restriction (Group A), antihypertensive drugs (Group B), and hypertensive on drugs (Group C).
- Left ventricular mass, cardiac dimensions, and systolic/diastolic function were assessed.
- Interdialytic weight gain was measured as an indicator of fluid volume status.
Main Results:
- Patients with strict fluid volume control (Group A) exhibited lower interdialytic weight gain compared to Groups B and C.
- Group A showed reduced left atrial index, left ventricular diameters, and wall thickness, indicating less cardiac remodeling.
- Left ventricular mass index was significantly lower in Group A, with better systolic and diastolic function parameters.
Conclusions:
- Strict fluid volume control is more effective than solely lowering blood pressure in reducing cardiac dilation and correcting left ventricular hypertrophy in hemodialysis patients.
- Addressing volume overload is crucial for improving cardiovascular outcomes in patients on hemodialysis.
Abstract:
Left ventricular hypertrophy (LVH) is very common in haemodialysis patients. We measured left ventricular mass in three groups of haemodialysis patients: group A (n = 40) were normotensive and receiving a strict salt-restricted diet; group B (n = 23) were normotensive and receiving anti-hypertensive drugs; and group C (n = 43) were hypertensive despite anti-hypertensive drug treatment. The interdialytic weight gain in group B and group C was significantly higher than in group A; the mean left atrial index and left ventricular end-systolic and end-diastolic diameter indices were all higher in group B than in group A. The interventricular septum and posterior wall were significantly thicker in group B and group C than group A, resulting in a higher left ventricular mass index. Left ventricular systolic and diastolic function parameters were slightly better in group A than in the other groups. These results show that strict fluid volume control decreases blood pressure, reduces dilated cardiac compartments and corrects LVH more effectively than lowering blood pressure without correcting the volume overload.
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