Preoperative Oral Feeding in Infants with Congenital Heart Disease Within the First Month of Life is Associated with a Higher Likelihood of Freedom From Tube Feeding at Time of Postoperative Discharge

Though several studies have demonstrated that preoperative oral feeding (PO) can be safe in patients with congenital heart disease, they are commonly prohibited from doing so, potentially precluding the development of such skills. We sought to determine whether preoperative oral feeding is associated with freedom from tube feeding at postoperative discharge. Single-center, observational study including patients in the first month of life (≤ 30 days of age) who underwent a single cardiac surgery between 7/1/2017-6/30/2022 and survived to discharge. Preoperative PO was defined as any oral intake up to the day of cardiac surgery. General demographics and peri-operative characteristics were analyzed. A total of 235 patients were included of which 178 (78%) PO fed preoperatively, and 171 (73%) were discharged taking full PO. Those discharged without tube feeds received more preoperative oral feeds, were less likely to have a chromosomal abnormality/genetic syndrome, had lower STAT categories, and were less likely to have postoperative complications, vocal cord dysfunction or prolonged mechanical ventilation. Multivariate analysis found that any preoperative PO [odds ratio (OR) of 2.78 (CI 1.48, 5.24, p-value = 0.002)] and increasing amounts of PO were predictive of full PO intake at discharge [≤ 20 ml/kg/day (OR 2.06, CI 1.03, 4.14, p-value = 0.042) and > 20 ml/kg/day (OR 4.07, CI 1.88, 8.84, p-value = 0.004)]. Preoperative oral feeding is a strong predictor of discharging with full PO intake after cardiac surgery in the first month of life and that it may also improve with increasing volumes. Multi-institutional analyses are warranted.