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Factors predicting clinical outcomes of continuous ambulatory peritoneal dialysis associated peritonitis - A single centre study.

BACKGROUND
Peritonitis is the common complication among Continuous Ambulatory Peritoneal Dialysis (CAPD) patients. This study is aimed to identify the factors predicting clinical outcomes of peritonitis in patients undergoing CAPD and the demographic, clinical and microbiological features of CAPD patients who were diagnosed with peritonitis.


MATERIALS AND METHODS
This is a retrospective observational study conducted to identify factors predicting clinical outcomes of CAPD associated peritonitis over a four-year period in Taiping Hospital, Malaysia.


RESULTS
A total of 109 episodes of CAPD associated peritonitis in 54 patients was enrolled with a median age being 56.5 years. In all 43.1% of these were complicated peritonitis. About half (n=54, 49.5%) of the peritonitis was caused by a single gram-positive organism. Coagulase negative Staphylococcus (CoNS) and Escherichia coli was the most often isolated gram-positive and gram-negative microorganism, respectively. We observed that less likelihood of developing complicated peritonitis in presence of abdominal pain (Odd ratio, OR 0.25, 95% confidence interval, 95%CI: 0.10, 0.63). In contrast, presence of more than one previous episode of peritonitis (OR 2.79, 95%CI: 1.11, 7.04) and previous migration and readjustment of Tenkchoff catheter (OR 7.48, 95%CI: 1.39, 40.41), were factors significantly associated with complicated peritonitis.


CONCLUSION
Presence of abdominal pain, more than one previous episode of peritonitis, and previous migration and readjustment of Tenkchoff catheter, were found as significant factors in predicting clinical outcomes of CAPD associated peritonitis.