Abstract: 【Abstract】Objective To study the effect of APD on Heart failure (HF) in CAPD patients. Methods 44 patients were included in this study from August 1, 2016 to July 31, 2018. All patients had been treated with CAPD before they came to our center and were treated with APD in the hospital. The ultrafiltration volume, urine volume, body mass, blood pressure, serological index and HF grade (NYHA grade) were recorded before and after treatment. Results Of the 44 patients, peritoneal dialysis UF was significantly increased when receiving APD compared to CAPD (t=-15.448，P＜0.001),and LHF class was significantly decreased 4 days after receiving APD (Z=- 7.582，P＜0.001).Body weights had significantly decreased 4 days after treatment with APD (t=11.411，P＜0.001).Blood pressure was well controlled 4 days after treatment with APD (SBP 11.713，P＜0.001；DBP t= 8.407，P＜0.001). After 4 days of APD treatment, serum creatinine, BUN and NTproBNP levels were significantly lower than those before treatment, and the difference was statistically significant (t=7.891，P＜0.001). Conclusions CAPD patients is easily associated with heart failure caused by volume overload, APD can effectively improve the acute heart failure symptoms, improve LHF, increase the ultrafiltration, and reduce serum creatinine, blood urea nitrogen, systolic blood pressure. It may be an effective
way to treat CAPD patients with heart failure.

Key words: Automated peritoneal dialysis, APD, Continuous ambulatory peritoneal dialysis, CAPD, Heart failure, HF