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Chinese Journal of Nephrology ; (12): 345-352, 2023.
Article in Chinese | WPRIM | ID: wpr-994983

ABSTRACT

Objective:To explore the association between the intraperitoneal pressure (IPP) and clinical symptoms in peritoneal dialysis (PD) patients.Methods:It was a cross-sectional study. PD patients of Peking University First Hospital from January 1, to October 31, 2021, were enrolled according to the inclusion and exclusion criterion. The gold standard—Durand method was used to measure the IPP of PD patients for 2 L intraperitoneal volume, and clinical and laboratory data were collected. According to whether the IPP ≥ 18 cmH 2O or not, the participants were divided into elevated IPP group and normal IPP group. A self-designed semi-quantitative questionnaire was used to investigate the frequency and degree of five clinical symptoms, including abdominal distension, bloating, acid reflux, hiccup and chest tightness or suffrage, as well as the degree of symptom relief after emptying peritoneal dialysate. Pearson or Spearman correlation analysis was used to analyze the correlation between each variable and intraperitoneal pressure. Results:A total of 194 PD patients were enrolled, with age of (51.6±12.9) years old. Of them, there were 123 males (63.4%), 71 females (36.6%) and 60 patients (30.9%) with diabetes. The median dialysis vintage was 24.0 (10.0, 54.0) months. The IPP was (16.2±4.3) cmH 2O, and 70 (36.1%) patients had elevated IPP. Correlation analysis results showed that IPP was positively correlated with body weight ( r=0.23, P<0.001), body mass index ( r=0.41, P<0.001), body surface area ( r=0.15, P=0.030), triglyceride ( r=0.22, P=0.001), high-sensitivity C-reactive protein ( r=0.20, P<0.001), and negatively correlated with diabetes ( r=-0.14, P=0.034) and serum calcium ( r=-0.15, P=0.034). There was no significant correlation between IPP and the total frequency score of five clinical symptoms ( r=0.122, P=0.092). The frequency of stomach distension in elevated IPP group was significantly higher than that in normal IPP group ( P=0.002), and there were no significant differences in the degree and relief degree of stomach distension between the two groups (all P>0.05). There were no statistically significant differences in the extent, frequency and degree of relief of other four clinical symptoms between the two groups (all P>0.05). Conclusion:The increased IPP has little correlation with clinical symptoms, suggesting that it may be unreliable to adjust the infusion volume only by the subjective feeling of patients. It is necessary to monitor IPP as an objective variable.

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