postoperative pain 48 hours [clinicaltrials_resource:5820e76840a27880299d0b91362f9d94]

group receiving one injection (25 mg) of ketamine (K1) intramuscularly (IM) at 3-4 hours before surgery or placebo (saline 0.9%, NS)

postoperative pain 48 hours [clinicaltrials_resource:5820e76840a27880299d0b91362f9d94]

group receiving one injection (25 mg) of ketamine (K1) intramuscularly (IM) at 3-4 hours before surgery or placebo (saline 0.9%, NS)