Introduction

Peritonitis remains a serious complication for patients undergoing peritoneal dialysis (PD). It often leads to increased hospitalization, technique failure, and higher mortality rates. Consequently, clinicians need rapid and accessible tools for early detection. Researchers recently evaluated how specific inflammatory and nutritional markers can improve peritonitis diagnosis in PD, providing more objective data for clinical decision-making.

Evaluating Inflammatory and Nutritional Indicators

A retrospective study analyzed data from 132 PD patients to identify hematological shifts during infection. Specifically, researchers compared 83 patients with confirmed peritonitis against 49 patients without the condition. The peritonitis group displayed significantly higher platelet-to-albumin ratio (PAR), systemic immune-inflammation index (SIRI), and neutrophil-to-lymphocyte ratio (NLR). Furthermore, these patients showed an increase in the monocyte-to-lymphocyte ratio (MLR). In contrast, the peritonitis group exhibited lower levels of hemoglobin, cholesterol, and albumin. These findings suggest that acute inflammation significantly disrupts both hematological profiles and nutritional status.

Clinical Utility for Peritonitis Diagnosis in PD

The study highlighted that certain ratios offer superior diagnostic accuracy compared to individual markers. Specifically, PAR and SIRI demonstrated impressive area under the curve (AUC) values. Moreover, using these calculated ratios helps clinicians differentiate between routine inflammation and active peritonitis. Additionally, the decrease in uric acid and triglycerides serves as an important secondary indicator of the disease state. Therefore, integrating these markers into routine protocols could streamline the diagnostic process. Consequently, this leads to faster treatment initiation and better long-term outcomes for dialysis patients.

FAQ

Which markers are most sensitive for peritonitis diagnosis in PD?

Research indicates that the platelet-to-albumin ratio (PAR) and the systemic immune-inflammation index (SIRI) are among the most reliable inflammatory markers for identifying peritonitis in these patients.

Why do nutritional markers like albumin drop during peritonitis?

Albumin levels decrease during peritonitis due to a combination of the systemic inflammatory response and increased protein loss through the inflamed peritoneal membrane.

How do inflammatory ratios improve diagnosis?

Ratios like NLR and MLR combine different cellular responses, providing a more comprehensive view of the immune system's status than a single white blood cell count alone.

Disclaimer: This content is for informational and educational purposes only. It does not constitute professional medical advice, diagnosis, or treatment. Always seek the advice of your physician or other qualified healthcare provider with any questions you may have regarding a medical condition. Refer to the latest local and national guidelines for clinical practice.

References

Chen XY et al. Value of different nutritional and inflammatory markers for diagnosis of peritonitis in patients undergoing peritoneal dialysis. Ren Fail. 2026 Dec undefined. doi: 10.1080/0886022X.2026.2650574. PMID: 41981709.

Li PK, et al. ISPD peritonitis guideline recommendations: 2022 update on prevention and treatment. Perit Dial Int. 2022;42(2):110-153. doi: 10.1177/08968608221080586.

Tang J, et al. The association between new inflammation markers and frequent peritoneal dialysis-associated peritonitis. BMC Nephrol. 2024;25(1):81. doi: 10.1186/s12882-024-03522-4.