CPR for intraoperative cardiac arrest under general anaesthesia is less successful than CPR for intraoperative cardiac arrest under regional anaesthesia. Under general anesthesia, autoregulation of tissue perfusion is often hampered to a great extent. especially vital organs like brain, kidney, heart etc. So, cardiac arrest under GA due to any cause has less than 1/2 min time to resuscitate. successful resuscitation after more than 1 min usually results in vital organ dysfunction/failure .
Whereas under regional anesthesia, autoregulation of tissue perfusion is often intact or well maintained. especially vital organs. So, cardiac arrests during regional anesthesia due to any cause have more time to resuscitate and are usually successful without significant vital organ dysfunction. Pupillary reflexes, doll's eye reflexes, spontaneous respirations etc only indicate…
