Seung Youn Kang

Introduction Regional anesthesia reduces blood pressure (BP = CO x SVR) mainly by blocking preganglionic sympathetic nerves from T1 to L2. Subdural anesthesia was traditionally known as a dangerously unstable anesthetic technique due to its potential to cause vital instability.5–7 However, our recent observations indicate that hemodynamically, subdural anesthesia can maintain blood pressure with minimal use of vasopressors.

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