Abstract
BackgroundRehospitalization is a major problem for end stage renal disease (ESRD) populations. However, researches on 30-day unexpected rehospitalzation of incident peritoneal dialysis (PD) patients were limited. This study aimed to investigate the prevalence, risk factors and impact on outcomes of 30-day unexpected rehospitalization in incident PD patients.MethodsThis was a retrospective cohort study. Patients who accepted PD catheter implantation in our centre from Jan 1, 2006 to Dec 31, 2013 and regular follow-up were included. The demographic characteristics, laboratory parameters, and rehospitalization data were collected and analyzed. The primary outcome was all-cause mortality, and the secondary outcomes included cardiovascular disease (CVD) mortality and technical failure.ResultsTotally 1632 patients (46.9 ± 15.3 years old, 60.1% male, 25.6% with diabetes) were included. Among them, 149 (9.1%) had a 30-day unexpected rehospitalization after discharge. PD-related peritonitis (n = 48, 32.2%), catheter malfunction (n = 30, 20.1%) and severe fluid overload (n = 19, 12.8%) were the top three causes for the rehospitalization. Multivariate logistic regression analysis showed that length of index hospital stays [Odds ratio (OR) =1.02, 95% confidence interval (CI) 1.00–1.03, P = 0.036) and hyponatremia (OR = 1.85, 95% CI 1.06–3.24, P = 0.031) were independently associated with the rehospitalization. Multivariate Cox regression analysis indicated that 30-day rehospitalization was an independent risk factor for all-cause mortality [Hazard ratio (HR) =1.52, 95% CI 1.07–2.16, P = 0.019) and CVD mortality (HR = 1.73, 95% CI 1.03–2.90, P = 0.038).ConclusionsThe prevalence of 30-day unexpected rehospitalization for incident PD patients in our centre was 9.1%. The top three causes for the rehospitalization were PD-related peritonitis, catheter malfunction and severe fluid overload. Thirty-day unexpected rehospitalization increased the risk of all-cause mortality and CVD mortality for PD patients.
Highlights
IntroductionResearches on 30-day unexpected rehospitalzation of incident peritoneal dialysis (PD) patients were limited
Rehospitalization is a major problem for end stage renal disease (ESRD) populations
Characteristics of the study cohort A total of 1885 incident peritoneal dialysis (PD) patients were screened, and 1632 patients were included in this study (Fig. 1)
Summary
Researches on 30-day unexpected rehospitalzation of incident peritoneal dialysis (PD) patients were limited. This study aimed to investigate the prevalence, risk factors and impact on outcomes of 30-day unexpected rehospitalization in incident PD patients. According to the 2018 United States Renal Data System (USRDS) report, about 35.4% of ESRD patients have an unplanned rehospitalization within 30 days after discharge [1]. Peritoneal dialysis (PD) is a commonly used method of renal replacement therapy for ESRD patients. Several studies have investigated the risk factors and prevention strategies of readmission among hemodialysis (HD) patients [6,7,8,9], evidence regarding the prevalence and modifiable risk factors of 30-day readmission among PD patients in developing countries was still limited. The association of rehospitalization and long-term outcomes among these patients had rarely been described
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