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Blood pressure profile in contiuous ambulatory peritoneal dialysis patients

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Publication Date
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Eldorado - Ressourcen aus und für Lehre, Studium und Forschung
Keywords
  • Ddc:610
  • Ambulatory Blood Pressure Monitoring
  • Cardiovascular Mortality
  • Continuous Ambulatory Peritoneal Dialysis
  • Diabetes Mellitus
  • Dipping
  • Diurnal Variation
  • Pulse Pressure
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Abstract

Background: Cardiovascular mortality is the leading cause of death in end stage renal disease. Despite being on continuous ambulatory peritoneal dialysis (CAPD), blood pressure (BP) remains poorly controlled. A higher pulse pressure and non dipping are associated with increased cardiovascular mortality. We studied BP control and the prevalence of non dipping in CAPD patients. Methods: All patients undergoing CAPD at our institution who met the inclusion criteria were recruited. We compared BP control and dipping status in diabetic and non diabetic pa-tients on CAPD. We also determined whether BP and peritoneal membrane permeability were associated. Results: Forty six patients with a mean age 45 ± 13 years were enrolled. Diabetic patients were older (mean age 54 ± 13 vs. 40 ± 11 yrs, p <0.001), had a lower mean diastolic BP (80 ± 14 vs. 90 ± 14 mmHg, p = 0.025) and a higher mean pulse pressure (59 ± 17 vs. 49 ± 14 mmHg, p = 0.035). They were also non dippers (n = 15 vs. n = 1, p = 0.007). The low and low average transporters tended to have a higher systolic BP (p = 0.054) and a higher pulse pressure (p = 0.058). On multivariate analysis, age was the main predictor of pulse pressure. Conclusion: Despite being on chronic maintenance PD, BP was not well controlled. Diabetic patients had a higher pulse pressure and were non dippers thereby increasing their cardiovascular risk. We should therefore optimize BP control and aim to restore the nocturnal dip in these patients.

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