[Gastrointestinal complications after on-pump cardiac surgery]

To determine the incidence and independent predictors of gastrointestinal complications (GICs) following on-pump cardiac surgery.

We retrospectively analyzed data of 9559 adults who underwent cardiac surgery in 2012-2017. Two groups of patients were distinguished: group 1 - 47 (0.5%) patients with abdominal complications followed by urgent surgery; group 2 - 9512 (95.5%) patients without complications or effective therapy.

1. Predictors of gastrointestinal complications: age >65 years, previous AF (p=0.011) and multifocal atherosclerosis (p=0.016), LV EF <40% (p=0.039), aortic cross-clamping time > 90 min (p=0.021), intraoperative blood loss over 600 ml (p=0.002), postoperative serum creatinine >140 μmol/l (p=0.005), mechanical ventilation >24 hours (p=0.023).

2. Reduced hemodilution during CPB, warm blood cardioplegia, higher perioperative values of Hb, Ht and IDO2 during cardiopulmonary bypass can prevent ischemic injury of abdominal organs during prolonged cardiac surgery.