Original Research

Dose Selection of Ropivacaine for Spinal Anesthesia in Elderly Patients with Hip Fracture: An Up-Down Sequential Allocation Study

Wang Y, Zha H, Fang X, Shen T, Pan K, Zhang J, He K, Wang S, Hu L

Clinical Interventions in Aging 2022, 17:1217-1226

Published Date: 11 August 2022