On-Table Versus Deferred Extubation After Paediatric Cardiac Catheterisation Under General Anaesthesia: A Retrospective Cohort Study

Purpose: Extubation timing after paediatric cardiac catheterisation under general anaesthesia remains a challenging clinical decision, particularly in children with cyanotic or haemodynamically significant congenital heart disease. This study aimed to evaluate factors associated with non-on-table extubation and to assess early postoperative respiratory outcomes in this high-risk population. Design: This was a single-centre retrospective cohort study conducted in a paediatric cardiac catheterisation laboratory. Methods: Paediatric patients with cyanotic or haemodynamically significant/complex congenital heart disease who underwent cardiac catheterisation under general anaesthesia with endotracheal intubation were included. Patients were grouped according to whether they were extubated on-table in the catheterisation laboratory or transferred to the intensive care unit with ongoing invasive mechanical ventilation. The primary outcome was non-on-table extubation. Secondary outcomes included extubation timing, reintubation within 48 h, major respiratory complications within 48 h, intensive care unit length of stay, hospital length of stay, and 7-day and 30-day mortality. Logistic regression analysis was used to identify factors associated with non-on-table extubation. Findings: Seventy-two patients were included. On-table extubation was performed in 52 patients (72.2%), whereas 20 patients (27.8%) were not extubated on-table. Patients not extubated on-table were younger, had lower body weight, higher American Society of Anesthesiologists physical status IV (ASA IV) frequency, higher Catheterization Risk Score for Pediatrics (CRISP) scores, lower baseline SpO2, and were more frequently undergoing emergency procedures. Reintubation within 48 h occurred only in the non-on-table extubation group (15.0% vs. 0.0%; p = 0.019). Major respiratory complications within 48 h were more frequent in patients not extubated on-table (20.0% vs. 3.8%; p = 0.047). Intensive care unit and hospital length of stay were also longer in this group. In multivariable analysis, higher CRISP score (adjusted odds ratio 1.22; 95% confidence interval 1.009–1.476; p = 0.040) and emergency procedure (adjusted odds ratio 8.74; 95% confidence interval 1.365–55.927; p = 0.022) were independently associated with non-on-table extubation. No 7-day mortality occurred in either group. Conclusions: On-table extubation after paediatric cardiac catheterisation under general anaesthesia was feasible in most selected patients with cyanotic or haemodynamically significant/complex congenital heart disease. Higher CRISP score and emergency procedures were independently associated with non-on-table extubation. These findings suggest that catheterisation-specific risk assessment may help anticipate postoperative ventilatory requirements in high-risk paediatric cardiac catheterisation patients.