Despite a 30% decrease in the rate over the last decade, coronary artery bypass graft (CABG) surgery remains a common major surgical procedure with significant morbidity and mortality. Chronic liver disease (CLD) patients, with increased survival rates because of medical advancements, are now frequently being considered for CABG, bearing higher perioperative risks. This study investigates the association between CLD and in-hospital outcomes in CABG patients using retrospective data from the National Inpatient Sample database (2016 to 2020) including 7,945 CLD patients who underwent CABG that were propensity score-matched with an equivalent number of patients without CLD who underwent CABG. Clinical variables were extracted using corresponding International Classification of Diseases, Tenth Revision codes, and multivariable logistic and linear regression models were used to assess in-hospital mortality, complications, and length of stay. The overall mortality rate was 5.5% (8.6% in the CLD group with cirrhosis, 5.9% CLD group without cirrhosis, and 2.8% in the non-CLD group, p <0.001). CLD with cirrhosis was associated with higher odds of mortality (adjusted odds ratio = 4.21, 95% confidence interval 3.61 to 4.94) and length of stay (β = 1.03, 95% confidence interval 1.01 to 1.05). CLD patients with cirrhosis demonstrated higher odds of perioperative cardiac complications (cardiac arrest, ventricular arrhythmias, tamponade, and shock), thromboembolic events, gastrointestinal bleeding, bowel ischemia, acute kidney injury, pneumonia, and sepsis. This study reveals a substantial impact of CLD on adverse outcomes in CABG patients, emphasizing the need for tailored preoperative assessments and postoperative care.
Keywords: National Inpatient Sample; chronic liver disease; complications; coronary artery bypass graft; mortality.
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