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Published on: July 19, 2018
Control of hypertension is better during hemodialysis than during continuous ambulatory peritoneal dialysis in ESRD
M T Velasquez1, S Q Lew, B von Albertini
1Department of Medicine, George Washington University Medical Center Washington, DC 20037, USA.
Insights
Hypertension control is better with hemodialysis (HD) than continuous ambulatory peritoneal dialysis (CAPD) in end-stage renal disease (ESRD) patients. CAPD patients required more antihypertensive drugs and had less adequate blood pressure control compared to HD.
Area of Science:
- Nephrology
- Cardiovascular Medicine
Background:
- End-stage renal disease (ESRD) necessitates renal replacement therapy.
- Hypertension is a common complication in ESRD patients.
- Hemodialysis (HD) and continuous ambulatory peritoneal dialysis (CAPD) are primary treatment modalities for ESRD.
Purpose of the Study:
- To compare the status and adequacy of blood pressure (BP) control in ESRD patients undergoing HD versus CAPD.
- To investigate factors influencing BP control in these two dialysis modalities.
Main Methods:
- A comparative study involving 21 ESRD patients treated with both HD and CAPD at different time points.
- Assessment of antihypertensive medication usage and BP levels (systolic and diastolic).
- Evaluation of ultrafiltration rates, Kt/V, hematocrit, recombinant human erythropoietin (rHuEpo) usage, body weight, and serum albumin.
Main Results:
- A significantly higher proportion of patients required antihypertensive drugs during CAPD (71%) compared to HD (43%).
- Adequate hypertension control was achieved in significantly fewer patients during CAPD (52%) versus HD (81%).
- Patients on CAPD exhibited higher mean body weight and lower serum albumin levels compared to HD.
Conclusions:
- Hypertension is less adequately controlled during CAPD compared to HD in ESRD patients.
- Increased total body fluid volume, suggested by weight gain during CAPD, may contribute to poorer hypertension management.
- HD appears to be a more effective modality for managing hypertension in ESRD patients.
Abstract:
This study compared the status and adequacy of blood pressure (BP) control in 21 ESRD patients treated with HD and CAPD at different time periods. Patients were considered to be hypertensive it they were receiving antihypertensive medications during the study period. During HD, 9 of the 21 patients (43%) required antihypertensive drugs to control their hypertension; whereas, during CAPD, the number of patients taking antihypertensive drugs increased to 15 (71%) (p < 0.05). Adequate control of hypertension (systolic BP < 150 mmHg and/or diastolic BP < 90 mmHg) was achieved in 17 patients (81%) during HD compared to 11 patients (52%) during CAPD (p < 0.05). Average ultrafiltration rate was 1.28 +/- 0.1 l/day during HD and 1.30 +/- 0.2 l/day during CAPD (p = NS). Mean Kt/V during HD was 1.24 +/- 0.1; whereas, mean weekly Kt/V during CAPD was 1.81 +/- 0.2. There were no significant differences in hematocrit or usage of recombinant human erythropoietin (rHuEPo) between the two treatment modalities. However, the weekly dose of rHuEpo was higher during HD than during CAPD (p < 0.05). Mean body weight was significantly higher (p < 0.01) and serum albumin was lower (p < 0.05) during CAPD than during HD in the same group of patients. We conclude that hypertension appears to be controlled better by HD than by CAPD in ESRD patients. The gain in body weight observed with CAPD treatment may reflect an increase in total body fluid volume which may partly explain why hypertension is less adequately controlled during CAPD than during HD treatment.
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