The Effect of Gabapentin on Spinal Anesthesia Duration

This prospective parallel group double blinded randomized study will be conducted over 50 adult participants between 20 and 60 years ASA (American Association of Anesthesiologists) I and II. The participants will be randomly allocated in 2 groups. Group A will receive 900 mg of gabapentin before surgery in 2 divided doses; 300 mg 10 hours prior to surgery and 600 mg 2 hours before surgery, while group B will receive 2 placebo tablets at the same time. The participants will receive spinal anesthesia in the form of 3ml of hyperbaric bupivacaine 0.5%. Hemodynamics will be recorded every 15 minutes till the end of surgery. Sensory, and motor block progression, and regression will be recorded also.

Inclusion Criteria:American Society of Anesthesiologists class I, and IIAge 20 - 60 yearsWeight between 60 and 80 kilogramsHeight between 160 and 180 centimetresExclusion Criteria:Participants with contraindications to spinal anesthesia.Participant refusalExtreme short or tall staturesBody mass index above 40