Serial Ascitic Fluid Analysis – Prognostic Marker for Adverse Outcome in Spontaneous Bacterial Peritonitis in Liver Cirrhosis?
Journal Title: Journal of Advances in Internal Medicine - Year 2015, Vol 4, Issue 1
Abstract
Background and Aims: Cirrhosis is a frequent cause of hospital admissions in Nepal with spontaneous bacterial peritonitis (SBP) being a major determinant of mortality. Limited diagnostic options preclude early risk stratification to improve patient outcomes. We assessed the predictive value of polymorphonuclear leukocyte counts (PMNs) and its association with mortality in hospitalized SBP patients. Methods: We examined 51 cirrhotic patients diagnosed with SBP in a prospective case-control study admitted to a Nepali tertiary care facility from February 2010 to November 2012. Serial paracentesis and ascitic fluid analysis were performed at admission, 24, and 48 hours. Receiver operating characteristic (ROC) curves, repeated measures analysis of variance, and logistic regression evaluated ascitic PMNs as predictors of mortality. Results: Deceased patients demonstrated significantly elevated mean circulating and ascitic PMNs. Ascitic PMNs in the non-survivors were significantly elevated upon admission and at 24 and 48 hours. These differences were significant based on absolute counts, relative differences and trends across time. ROC curves provided diagnostic thresholds (1600, 860, 500 cells/mm3) distinguishing the two groups upon presentation, at 24 and 48 hours respectively, with high sensitivities (100%), specificities (82.5-97.5%), and positive predictive values (52.4-84.6%). After adjusting for age and case severity, there was a 9.1-fold greater odds of mortality upon admission, for every increase of 500 ascitic PMNs. Conclusion: In this study of cirrhotic patients with SBP, in-hospital mortality was associated with persistently elevated ascitic PMNs. Ascites PMN thresholds offer a quick, low-tech option to risk stratify patients, prognosticate mortality.
Authors and Affiliations
Rahul Pathak| Department of Gastroenterology, IOM;Kathmandu, Nepal, 1Annette Von Thun| Preventive Medicine Resident, Medical Corps, United States Navy;Kathmandu, Nepal, Kumar Vikram Singh| MD resident, Department of Internal Medicine, IOM;Kathmandu, Nepal, Prem Khadga| Professor and Head of Department of Gastroenterology, IOM;Kathmandu, Nepal, Shashi Sharma| Professor and Head of Department of Internal Medicine, IOM,Kathmandu, Nepal
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- EP ID EP4792
- DOI http://dx.doi.org/10.3126/jaim.v4i1.14174
- Views 490
- Downloads 20
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