Masui. The Japanese journal of anesthesiology
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The effect of adding vasoconstrictors to local anesthetics for spinal anesthesia is controversial. The aim of this study was to investigate the effect of phenylephrine on neural blockade and hemodynamic changes in spinal anesthesia in elderly patients. ⋯ The addition of phenylephrine to hyperbaric tetracaine in spinal anesthesia did not affect the extent of sensory blocks and hemodynamic changes in elderly patients.