[Predictive value of CONUT score and dialysis age for peritoneal dialysis-associated peritonitis].

Objective: To explore the predictive value of controlling nutritional status (CONUT) score and dialysis age for peritoneal dialysis-associated peritonitis (PDAP). Methods: This study was a follow-up study. Patients with end-stage renal disease who received peritoneal dialysis (PD) for the first time in the Department of Nephrology, the Third Affiliated Hospital of Suzhou University from January 2010 to December 2020 were enrolled in the study. Patients were divided into non-peritonitis group, mono group (only once PDAP occurred in one year) and frequent group (twice or more PDAP occurred in one year) according to the occurrence and frequency of PDAP during follow-up. The demographic, clinical and laboratory data of patients were collected, and the body mass index and CONUT score were recorded after half a year. Cox regression analysis was used to screen the relevant factors, and receiver operating characteristic (ROC) curve was used to analyze the predictive value of CONUT score and dialysis age for PDAP. Results: A total of 324 PD patients were included, with 188 males (58.0%) and 136 females (42.0%), and aged［M（Q1，Q3）］48 (37, 60) years old. The follow-up time was 33 (19, 56) months. PDAP occurred in 112 patients (34.6%), including 63 patients (19.4%) in mono group and 49 patients (15.1%) in frequent group. Multivariate Cox regression analysis showed that half-year CONUT score (HR=1.159, 95%CI: 1.047-1.283, P=0.004) was a risk factor for PDAP, and the baseline CONUT score (HR=1.194, 95%CI: 1.012-1.408, P=0.036) was a risk factor for frequent peritonitis. The area under ROC curve of baseline CONUT score combined with dialysis age in predicting PDAP and frequent peritonitis was 0.682 (95%CI: 0.628-0.733) and 0.676 (95%CI: 0.622-0.727), respectively. Conclusion: CONUT score and dialysis age have certain predictive value for PDAP, and the predictive value of combined diagnosis is higher, which may be used as a potential predictor for PDAP in PD patients.目的： 探讨控制营养状态（CONUT）评分和透析龄对腹膜透析相关性腹膜炎（PDAP）的预测价值。 方法： 本研究为随访研究。选取2010年1月至2020年12月在苏州大学附属第三医院肾内科首次接受腹膜透析的终末期肾病患者，根据随访过程中PDAP是否发生及发生频率分为非腹膜炎组、单发腹膜炎组（1年内仅发生1次PDAP）和频发腹膜炎组（1年内发生2次或2次以上PDAP）。收集患者人口学资料、临床资料和实验室检查结果，随访半年时体质指数和CONUT评分。采用Cox回归模型分析PDAP的危险因素，采用受试者工作特征（ROC）曲线分析CONUT评分和透析龄对PDAP的预测价值。 结果： 共纳入腹膜透析患者324例，男188例（58.0%），女136例（42.0%），年龄［M（Q1，Q3）］48（37，60）岁，随访33（19，56）个月。112例（34.6%）患者发生了PDAP，其中单发腹膜炎组63例（19.4%），频发腹膜炎组49例（15.1%）。多因素Cox回归分析结果显示，半年CONUT评分（HR=1.159，95%CI：1.047~1.283，P=0.004）是PDAP的危险因素，基线CONUT评分（HR=1.194，95%CI：1.012~1.408，P=0.036）是频发腹膜炎的危险因素。基线CONUT评分联合透析龄预测PDAP及频发腹膜炎的ROC曲线下面积分别为0.682（95%CI：0.628~0.733）和0.676（95%CI：0.622~0.727）。 结论： CONUT评分与透析龄对PDAP有一定的预测价值，两者联合的预测价值更高，可能可作为腹膜透析患者发生PDAP的潜在预测指标。.