Predictive Efficacy of the Perfusion Index for Hypotension following Spinal Anesthesia in Parturient Undergoing Elective Cesarean Section: A Systematic Review and Meta-Analysis. - Hung, Kuo-Chuan; Liu, Chien-Cheng; Huang, Yen-Ta; Wu, Jheng-Yan; Chen, Jen-Yin; Ko, Ching-Chung; Lin, Chien-Ming; Hsing, Chung-Hsi; Yew, Ming; Chen, I-Wen (Diagnostics (2075-4418), 2023)