Clinical Trial on Antibiotic-Lock in Tenckhoff Catheter for Relasping and Repeat Peritonitis

in addition to the appropriate IP antibiotics, an antibiotic-lock will be prepared by the same antibiotics. We will follow the suggested data used in hemodialysis catheter for the concentration of different antibiotics to prepare the locking solution The resulting locking solution will be instilled precisely to fill up the Tenckhoff catheter and the transfer set once a day. Prior to that, the existing PD solution is drained out first. As such, a "dry abdomen" is maintained during antibiotic-lock dwelling in the Tenckhoff catheter. This is to ensure the antibiotic-lock solution can be maintained within the catheter lumen for a prolonged period of time After a 6-hour dwell, the antibiotic-lock is drained out and usual PD schedule is resumed. Such a daily application of antibiotic lock shall last until the course of IP antibiotics is completed.

In the control arm, appropriate IP antibiotics are to be continued. The dosage and duration of antibiotics will fully follow the recommendation from the latest International Society for Peritoneal Dialysis (ISPD) peritonitis guidelines \*For the subjects in the control arm who reach the defined primary end-point, they will automatically undergo crossover to the intervention arm to receive standard IP antibiotics together with the intra-catheter antibiotic-lock. They will be followed for another 6 months subsequently.