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Published on: May 23, 2025
Risk of peritonitis after gastroscopy in peritoneal dialysis patients
Gordon Chun-Kau Chan1, Sunny Hei Wong1, Jack Kit-Chung Ng1
1Carol and Richard Yu Peritoneal Dialysis Research Centre, Department of Medicine and Therapeutics, Prince of Wales Hospital, The Chinese University of Hong Kong, Shatin, Hong Kong, China.
Background:
Peritonitis is a common and serious complication of peritoneal dialysis (PD). Translocation of gut bacteria to peritoneum is an important mechanism, which may be enhanced by gastrointestinal endoscopy.
Methods:
In this retrospective observational cohort study, we identified 450 gastroscopies performed in PD patients within a single centre between 2014 and 2019. Gastroscopy-related peritonitis was defined by peritonitis within 1 week after endoscopy.
Results:
A total of 408 endoscopic episodes in 216 patients were analysed after excluding 42 cases with either pre-existing peritonitis before endoscopy, or concomitant biliary, small bowel or large bowel endoscopy. There were 16 episodes of peritonitis within 1 week of endoscopy (3.9%). One-quarter of cases were polymicrobial (four episodes, 25.0%). Logistic regression model showed that patient's age, number of endoscopic biopsies, and histamine-2 receptor blocker use were independently associated with peritonitis, while prior antibiotics exposure was associated with lower risk of peritonitis, odds ratio 0.23 (95% confidence interval 0.06-0.95; p = 0.04).
Conclusion:
Peritonitis can complicate gastroscopy in PD patients and occurs more often in elderly or after repeated biopsy procedures.
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