Prophylactic Mirtazapine or Dexamethasone for Post-spinal Anesthesia Shivering

Each patient received 30 mg Mirta tablet orally with sips of water and 100 ml 0.9% sodium chloride (normal saline \[NS\]) (IVI) over 15 minutes as a placebo for Dex solution 2 hours preoperatively.

Each patient received a placebo tablet identical to Mirta tablet orally with sips of water and Dex 8 mg ampoule diluted in 100 ml 0.9% NS IVI over 15 minutes, 2 hours preoperatively.

Each patient received a placebo tablet identical to Mirta tablet orally with sips of water and 100 ml 0.9% NS IVI over 15 minutes as a placebo for Dex solution 2 h preoperatively.preoperatively.