Abstract: 【Abstract】Objective To investigate the clinical effect of vertical rhythm on ameliorating dialysate drainage disorder due to catheter displacement in peritoneal dialysis (PD) patients. Methods A total of 22 PD patients treated in the Department of Nephrology, the First Affiliated Hospital of Shanghai Jiaotong University from May 2017 to May 2019 were recruited. These patients complied with the diagnosis of drainage barrier due to PD catheter displacement confirmed by stand abdominal X-ray plain film. We used the vertical rhythm instrument with high frequency and low amplitude vibration to treat the patients. Their 24-hour ultrafiltration volume before and after the treatment was recorded, PD fluid drainage speed was assessed, and the
place of PD catheters was rEexamined by abdominal X-ray plain film. Results Among the 22 PD patients with catheter displacement, the average drainage rate of the outflow fluid increased by 59.317ml/min (80.284±26.079ml/min vs. 20.931± 7.366ml/min (t=10.656, P＜0.001) after vertical rhythm treatment. The place of PD catheters restored to the true pelvis in 3 cases; the tips of PD catheters moved down 1-2 vertebra levels in 17 cases and the drainage disorder remained in 2 cases. Conclusion The vertical rhythm therapy is simple to operate and can effectively improve the obstruction of dialysis fluid drainage caused by catheter displacement. This method is worthy of clinical use.

Key words: Vertical movement, Catheter displacement, Obstruction of peritoneal dialysate drainage