Preoperative risk factors for poor outcome - comorbid diseases, for example, decompensated cirrosis. I think and other conditions: diabetes, heart failure, alcohol consumption...
There are several such as older age, malnutrition, to be a heavy smoker or alcoholic, and associated diseases mainly cardiology or lung diseases, diabetes and hypertension
Our study on peptic ulcer perforation revealed rhat female gender, older age group, perforation surgery interval more than 36 h, and size of perforation more than 1 cm2 were significant factors influencing postoperative mortality and morbidity. Postoperative morbidity was also associated with comorbid diseases. Abnormal renal function on presentation was identified as an additional risk factor for postoperative morbidity and longer hospital stay.