How well is hypertension controlled in CAPD patients?

UNLABELLED: To determine how well hypertension is controlled in continuous ambulatory peritoneal dialysis (CAPD) patients, we monitored the blood pressure of 31 hypertensive adult CAPD patients treated with antihypertensive agents. Blood pressure (BP) monitoring, using a noninvasive, ambulatory BP monitor, began in the morning and continued every 30-60 min for 24 h (mean 42 readings per patient). The mean BP of all patients over 24 h was 145.6/91.3 mm Hg. In these, 40.5% of systolic BP readings exceeded 150 mm Hg and 50.2% of diastolic readings exceeded 90 mm Hg, suggesting that hypertension was inadequately controlled for a considerable period of time. Diabetic patients had even worse control of BP. Mean BP, heart rates, and BP loads were not different, between daytime or nighttime. These findings suggest that CAPD patients do not preserve the normal circadian rhythm of BP and that their hypertension is not controlled any better during the night than during the day. We repeated BP monitoring after adjustment of antihypertensive medications in 8 patients who had poorly controlled hypertension. Systolic and diastolic BP loads in subsequent studies improved significantly from the first study. IN
CONCLUSION: hypertension is suboptimally controlled in most CAPD patients; diabetic patients fare even worse in the control of hypertension; most patients do not preserve the circadian rhythm of BP and there is no difference in the adequacy of hypertension control during the day or at night; assessment of hypertension with ambulatory BP monitoring helps guide therapy and control of hypertension.