O043 The outcomes after emergency appendicectomy in patients with liver cirrhosis: a population-based cohort study from England

Abstract

Abstract Introduction The mortality risk after appendicectomy in patients with liver cirrhosis is predicted to be higher than in the general population given the associated risk of perioperative bleeding, infections, and liver decompensation. This population-based cohort study aimed to determine the 90-day mortality risk following emergency appendicectomy in patients with cirrhosis. Methods Adult patients undergoing emergency appendicectomy in England between January 2001 and December 2018 were identified from two linked primary and secondary electronic healthcare databases, the clinical practice research datalink, and hospital episode statistics data. Length of stay, re-admission, Case fatality, and the odds ratio of 90-day mortality were calculated for patients with and without cirrhosis, adjusting for age, sex, and co-morbidity using logistic regression. Results A total of 40353 patients underwent appendicectomy and of these 75(0.19%) had cirrhosis. Patients with cirrhosis were more likely to be older (p <0.0001) and have comorbidities (p<0.0001). Proportionally, more patients with cirrhosis underwent an open appendicectomy (76%) compared with 64% of those without cirrhosis (p = 0.03). The 90-day case fatality rate was 6.67% in patients with cirrhosis compared with 0.56% in patients without cirrhosis. Patients with cirrhosis had longer hospital length of stay (4 (IQR 3–9) days versus 3 (IQR 2–4) days and higher readmission rates at 90-days (20% vs 11%, p=0.019). Most importantly, their odds of death at 90-days were 3 times higher than patients without cirrhosis, adjusted odds ratio 3.75 (95% CI 1.35–10.49) Conclusion Patients with cirrhosis have a 3-fold increased odds of 90-day mortality after emergency appendicectomy compared to those without cirrhosis. Take-home message Patients with cirrhosis have a 3-fold increased mortality risk than those without cirrhosis. They also have longer hospital stays and higher risk of readmissions.