by Van Driest, S.L. et al.
Age, cardiac bypass time, benzodiazepines, and neuromuscular blocking agents were significantly correlated with opioid dose, but Down syndrome, gender, pain score, creatinine, acetaminophen, nonsteroidal anti-inflammatory drugs, and steroid medications were not.
Pediatr. Crit. Care. Med. 2013; 9:862-8