Related Experiment Videos
Impact of volume control on left ventricular hypertrophy in dialysis patients
Mehmet Ozkahya1, Huseyin Toz, Filiz Qzerkan
1Department of Nephrology, Ege University Medical Faculty, Bornova, Izmir, Turkey. m.ozkahya@ixir.com
Insights
Strict salt restriction and ultrafiltration significantly reduced blood pressure and left ventricular hypertrophy in hemodialysis patients. This intensive strategy improved cardiac structure and lowered mortality risk in end-stage renal disease.
Area of Science:
- Nephrology
- Cardiology
- Hypertension Management
Background:
- Left ventricular hypertrophy (LVH) is prevalent in over 60% of end-stage renal disease (ESRD) patients, significantly predicting cardiac mortality.
- Effective management strategies for LVH in ESRD patients are crucial for improving cardiovascular outcomes.
Purpose of the Study:
- To prospectively evaluate the impact of dietary salt restriction and stringent volume control on blood pressure (BP) and LVH in hemodialysis (HD) patients.
- To assess the feasibility and efficacy of intensive fluid management in reducing cardiac structural abnormalities.
Main Methods:
- Nineteen hypertensive patients undergoing chronic HD were enrolled.
- Treatment involved 12-hour HD sessions weekly with maximal ultrafiltration (UF) while maintaining stable blood pressure (BP).
- Dietary salt intake was strictly controlled, and pre-dialysis mean BP, body weight, cardio-thoracic index (CTI), and echocardiographic parameters were monitored over 12 months.
Main Results:
- All patients achieved target BP (<140/90 mmHg) within three months using the strict volume control strategy.
- Mean pre-dialysis BP decreased from baseline, and symptomatic hypotension incidence reduced over the follow-up period.
- Left ventricular mass index significantly decreased from 164 +/- 64 to 112 +/- 36 g/m2, with reductions observed in CTI and cardiac chamber dimensions.
Conclusions:
- Intensified salt restriction and ultrafiltration effectively normalize BP and improve cardiac structure, specifically reducing LVH in hemodialysis patients.
- This approach offers a viable strategy for managing cardiovascular risk factors in ESRD.
- The study demonstrates that aggressive fluid and salt management can lead to significant cardiac benefits in this patient population.
Background:
Left ventricular hypertrophy (LVH), which strongly predicts cardiac mortality, is seen in more than 60% of end-stage renal disease patients. The aim of this study was to prospectively investigate the effect of salt restriction and strict volume control on blood pressure and LVH.
Method:
Nineteen hypertensive patients on chronic hemodialysis (HD) treatment (age 52 +/- 17 years, 7 women) were included in the study. Treatment consisted of 12-h HD per week, during which as much ultrafiltration (UF) was applied as possible without an excessive blood pressure (BP) drop. Special attention was given to dietary salt restriction. Predialysis mean BP (MBP), body weight (BW), cardio-thoracic index (CTI) and echocardiographic results were recorded at baseline and after 6 and 12 months.
Results:
All patients reached acceptable BP (< 140/90 mmHg) within three months (10-75 days) with our strict volume control strategy. Mean pre-dialysis BP was 127 +/- 17/78 +/- 9 mm Hg at baseline, 120 +/- 9/75 +/- 6 mm Hg at the 6th month and 118 +/- 11/73 +/- 5 mm Hgat the 12th month. The incidence of symptomatic hypotension gradually decreased from a mean of 22% to 11% and 7%, respectively during follow-up. Left ventricular mass index decreased from 164 +/- 64 to 112 +/- 36 g/m2. CTI, left atrial, left ventricular systolic and diastolic diameters significantly decreased in all patients. Inter-dialytic weight gain was 930 +/- 70 g/day in the follow-up period. Hematocrit did not significantly differ at the first, second and last visits.
Conclusion:
Normal BP and improvement of cardiac structure, in particular a reduction of LVH could be reached in all our patients by intensifying salt restriction and UF.