Vasoactive-inotropic score as a predictor of clinical deterioration in pediatric patients undergoing venovenous extracorporeal membrane oxygenation: a preliminary single-center study in South Korea - Joung-Hee Byun; Young A Kim; Hye Jin Baek; Hyungtae Kim; Jae Hong Lee; Kwang Ho Choi (Acute and Critical Care, 2026)