Anchalee S, Thertchanakun S, Pisitsak C, Chuchatwannakul R. Passive head-up tilt for predicting fluid responsiveness in critically ill patients: Passive head-up tilt and fluid responsiveness. Clin Crit Care [internet]. 2026 Jun. 9 [cited 2026 Sep. 20];34(1):e260016. available from: https://he02.tci-thaijo.org/index.php/ccc/article/view/279538