Cirrhotic patients admitted to the ICU for medical reasons: Analysis of 5506 patients admitted to 286 ICUs in 8years

Abstract

Purpose: To describe characteristics and prognostic factors of cirrhotic patients admitted to a representative sample of Italian intensive care units (ICUs).

Materials and methods: All patients admitted to 286 ICUs for medical reasons between 2002 and 2010 (excluding 2007) were considered. A logistic regression model was developed on cirrhotics to predict hospital mortality. The prediction was applied to different subgroups defined by both the level of unit expertise with cirrhotics and the overall unit performance, and compared to the actual mortality.

Results: 5506 cirrhotic patients (32.1% admitted to the ICU for non-cirrhotic-related reasons) were compared to 130,477 controls. Hospital mortality was higher in cirrhotics (57.2% vs. 35.0%, p<0.001). ICU volume of cirrhotic patients did not influence mortality, while the overall performance of the unit did. The standardized mortality ratio for overall lower-performing units was 1.09 (95%CI: 1.05-1.14), for the average-performing units it was 1.01 (95%CI: 0.98-1.04), for the higher-performing units it was 0.92 (95%CI: 0.89-0.96).

Conclusions: The outcome of critically ill cirrhotic patients is quite poor, but not to limit their admission to the ICU. When cirrhosis accompanies other acute conditions, the general level of intensive care medicine is more important than the specific liver-oriented expertise in treating these patients.

Keywords: Cirrhosis; Intensive care units; Outcome; Performance; Prognosis.