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Nefrología (Madrid)

versión On-line ISSN 1989-2284versión impresa ISSN 0211-6995


PEREZ DIAZ, Vicente et al. Intraperitoneal pressure in peritoneal dialysis. Nefrología (Madr.) [online]. 2017, vol.37, n.6, pp.579-586. ISSN 1989-2284.

The measure of intraperitoneal pressure in peritoneal dialysis is easy and provides clear therapeutic benefits. However it is measured only rarely in adult peritoneal dialysis units. This review aims to disseminate the usefulness of measuring intraperitoneal pressure. This measurement is performed in supine before initiating the drain of a manual exchange with “Y” system, by raising the drain bag and measuring from the mid-axillary line the height of the liquid column that rises from the patient. With typical values of 10-16 cmH2O, intraperitoneal pressure should never exceed 18 cmH2O. With basal values that depend on body mass index, it increases 1-3 cmH2O/L of intraperitoneal volume, and varies with posture and physical activity. Its increase causes discomfort, sleep and breathing disturbances, and has been linked to the occurrence of leaks, hernias, hydrothorax, gastro-esophageal reflux and enteric peritonitis. Less known and valued is its ability to decrease the effectiveness of dialysis significantly counteracting ultrafiltration and decreasing solute clearance to a smaller degree. Because of its easy measurement and potential utility, should be monitored in case of ultrafiltration failure to rule out its eventual contribution in some patients. Although not yet mentioned in the clinical practice guidelines for PD, its clear benefits justify its inclusion among the periodic measurements to consider for prescribing and monitoring peritoneal dialysis.

Palabras clave : Intraperitoneal pressure; Hydrostatic pressure; Ultrafiltration; Ultrafiltration failure; Mechanical complications of peritoneal dialysis; Infusion volumen.

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