Risk Factors and a Nomogram Construction for Prolonged Length of Hospital Stay in Patients With Peritoneal Dialysis Associated Peritonitis

Jing YAO; Xiaojian BAO; Yafeng ZHANG; Bin WU; Qishun WU

doi:10.3881/j.issn.1000-503X.16160

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Acta Academiae Medicinae Sinicae ›› 2025, Vol. 47 ›› Issue (2) : 244-250. DOI: 10.3881/j.issn.1000-503X.16160

Risk Factors and a Nomogram Construction for Prolonged Length of Hospital Stay in Patients With Peritoneal Dialysis Associated Peritonitis

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Abstract

Objective To analyze the risk factors for prolonged length of hospital stay in patients with peritoneal dialysis associated peritonitis(PDAP)and construct a nomogram based on Logistic regression model.Methods A retrospective study was conducted on patients with PDAP who were hospitalized at the Affiliated Hospital of Jiangsu University from January 2013 to December 2023.Using the 75th percentile of hospitalization time as the cutoff(>21 days),the patients were divided into prolonged length of hospital stay group and normal length of hospital stay group.Clinical data were compared between the two groups.Logistic regression analysis was used to analyze the risk factors for prolonged hospital stay in PDAP patients and to construct a nomogram.Results A total of 131 PDAP patients were included in this study,including 40 cases in prolonged length of hospital stay group and 91 cases in normal length of hospital stay group.Multivariate Logistic regression analysis showed that Gram-negative bacteria detected in ascites(OR=6.012,95% CI=1.878-19.248,P=0.003)and elevated platelet count(OR=1.010,95% CI=1.005-1.015,P<0.001)were independent risk factors for prolonged length of hospital stay,while elevated serum chloride(OR=0.885,95% CI=0.802-0.978,P=0.016)was a protective factor.Based on the above three indicators,a nomogram was constructed.The multivariate Logistic regression model showed an area under the receiver operating characteristic curve(AUC)of 0.755,with an internal validation AUC of 0.727 using the Bootstrap method.The calibration curve indicated that the predicted probability was consistent with the actual probability.The decision curve showed that the model was clinically applicable when the threshold probabilities were 9%-10%,13% and 18%-92%.Conclusion A nomogram,based on the detection of gram-negative bacteria in ascites,platelet count and serum chloride,was helpful for clinical screening PADP patients at risk for prolonged length of hospital stay,and can provide a basis for optimizing clinical decision-making.

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peritoneal dialysis associated peritonitis / prolonged length of hospital stay / nomogram

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Jing YAO , Xiaojian BAO , Yafeng ZHANG , et al . Risk Factors and a Nomogram Construction for Prolonged Length of Hospital Stay in Patients With Peritoneal Dialysis Associated Peritonitis[J]. Acta Academiae Medicinae Sinicae. 2025, 47(2): 244-250 https://doi.org/10.3881/j.issn.1000-503X.16160

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