Abstract
BACKGROUND: Critical gaps persist in clinical guidelines and resuscitation strategies for induction and maintenance phase peri-anesthetic cardiac arrest (IM-PACA), urgently necessitating exploration of feasible solutions during anesthesia induction and maintenance periods. This study evaluates a modified cardiopulmonary bypass (CPB) strategy for managing IM-PACA in valvular heart disease (VHD) surgical patients. METHODS: A retrospective analysis was performed on IM-PACA patients (n = 21) from 1,043 cardiac valve surgeries between March 2019 and January 2022 as the cardiac arrest-resuscitation group (CAR group). Patients who completed normal cardiac valve surgery (n = 84) were randomly selected from the medical record database as the Routine Surgery group (RS group), serving as a benchmark control for the standard efficacy of routine surgery. The CAR group completed surgery after modified cardiopulmonary bypass strategy; the RS group completed surgery as planned. This study reviewed the possible causes of cardiac arrest in the CAR group and performed statistical analysis on surgical time-related metrics (total surgical duration, cardiopulmonary bypass duration, etc.) and postoperative follow-up data (paravalvular leak, cardiac-related complications, etc.) using SPSS 26.0. RESULTS: The short-term postoperative survival rate was 95.24% in the CAR group and 100% in the RS group. Baseline characteristics including gender, age, and smoking history showed no significant differences between the two groups (P > 0.05). The CAR group showed a significantly shorter pericardiotomy-to-CPB time (250.00 (205.00-269.50) vs. 512.50 (459.25-563.00) s; P < 0.001), but longer rewarming time (68.00 (63.50-74.50) vs. 48.00 (35.25-61.75) min; P < 0.001), ventilator duration (980.00 (619.00-1106.50) vs. 900.00 (630.00-1103.75) min; P = 0.002), and higher day 2 drainage (190 (157.50-215.00) vs. 105 (71.25-150.00) ml; P < 0.001) compared to the RS group. Other intraoperative and postoperative parameters revealed no statistically significant differences when compared with the RS group (P > 0.05). CONCLUSIONS: For IM-PACA patients undergoing cardiac valve surgery, the modified cardiopulmonary bypass strategy is an effective rescue method, and the strategy of continuing surgery after resuscitation is completely feasible.