Background & Aims: The prevalence of obesity in cirrhosis is rising. The impact of obesity in critically ill cirrhotic patients with sepsis/septic shock has not been evaluated. This study aimed to examine the relationship between obesity and mortality in cirrhotic patients admitted to the intensive care unit with septic shock.
Methods: A retrospective cohort study of all cirrhotic patients with septic shock (n = 362) and a recorded body mass index (BMI) from an international, multicentre (CATSS) database (1996-2015) was performed. Patients were classified by BMI as per WHO categories. Primary outcome was in-hospital mortality. Multivariate logistic regression analyses were carried out to determine independent associations with outcome.
Results: In this analysis, mean age was 56.4 years, and 62% were male. Median BMI was 26.3%, and 57.7% were overweight/obese. In-hospital mortality was 71%. Obese patients were more likely to have comorbidities of cardiac disease, lung disease and diabetes. Compared to survivors (n = 105), non-survivors (n = 257) had significantly higher MELD and APACHEII scores and higher requirements for renal replacement therapy and mechanical ventilation (P < .03 for all). Using multivariable logistic regression, increase in BMI (OR 1.07, P = .034), time delay to appropriate antimicrobials (OR 1.16 per hour, P = .003), APACHEII (OR 1.12 per unit, P = .008) and peak lactate (OR 1.15, P = .028) were independently associated with in-hospital mortality.
Conclusions: Septic shock in cirrhosis carries a high mortality. Increased BMI is common in critically ill cirrhotic patients and independently associated with increased in-hospital mortality.
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