Behavior of Perfusion Variables in Adult Patients Undergoing Cardiac Surgery in the Hospital Cardiovascular Del Niño De Cundinamarca Descriptive Cohort

Abstract

Introduction: Blood lactate levels during extracorporeal circulation (ECC) have been the method used to monitor the state of microcirculation. New studies recommend the central venous oxygen saturation (SvcO₂) and the central venous - arterial difference of CO2  (Cv-aCO₂ ) as innovative tools to evaluate such state in this group of patients.

Aim: To describe the levels of tissue perfusion biomarkers (SvcO₂, Cv-aCO₂  and lactate) of adult patients undergoing ECC cardiac surgery, at the Hospital Cardiovascular del Niño, from April 1 to July 31, 2019.
Methodology: Historical descriptive cohort study. A review of the medical records of adult patients undergoing cardiac surgery of any etiology under ECC was carried out, evaluating the variables to be studied intraoperatively and postoperatively at 6, 12 and 24 hours in the Intensive Care Unit. Descriptive statistics were used.

Results: 54 patients undergoing different types of cardiac surgery with ECC were included. The most frequent one was myocardial revascularization in 24 patients (44,4%). The duration of ECC in 30 cases (55,5%) ranged between 60-120 minutes. During the intraoperative period, a progressive rise in the medians of the Lactate variables was observed, being greater towards the end of the ECC and being reestablished outside the ECC and in the first 24 hours of ICU stay.

Conclusions: This study allowed the integration of 3 tissue perfusion variables and findings that are relevant from the clinical perspective for the perioperative management of patients undergoing cardiac surgery in ECC.