A 30 year old female who had undergone a sugery under spinal anaesthesia has developed post spinal headache. How long does it take for the headache to subside?

Anaesthesia

A 30 year old female who had undergone a sugery under spinal anaesthesia has developed post spinal headache. How long does it take for the headache to subside?

Allergy in immediate perioperative period is due to:

All of the following are true about lumbar puncture except:

Which of these is most commonly used as pre-anesthetic medication?