Abstract:Objective
The dose selection of ropivacaine for spinal anesthesia in clinical work mainly depends on the experience of the anesthesiologist. In this study, a prospective and modified up-down sequential allocation design was used to provide the optimal dose selection of ropivacaine for spinal anesthesia.
Patients and methods
This study was divided into two stages, and a total of 164 elderly patients with elective hip fractures were included. In stage I, the dose of ropiv… Show more
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