The effects of warming the intravenous Normal saline on postoperative hemodynamic situation and shivering in ENT surgery

Shivering after anesthesia is a common complication that can lead to problems such as increased intraocular and cranial pressure and postoperative pain with increasing oxygen consumption in the body. Considering the importance of controlling postoperative shivering and limiting the use of shiver drug therapy, this study was designed to evaluate the effects of warming intravenous fluids on postoperative shivering in ENT surgery.

This study was a single-blind clinical trial on 70 patients undergoing ENT surgery. Patients were randomly divided into two groups, receiving warmed fluid and fluid intake group with room temperature. The vital signs of the patients were recorded after intubation until recovery at specified intervals. Also, the incidence and severity of chills in patients were investigated and noted.

The severity of chills in the experimental and control groups was statistically significant. The use of warm serum significantly reduced shivering in the experimental group (p = 0.006).

The infusions of warm fluids help to reduce postoperative shivering. Due to the lack of hemodynamic complications, it is possible to use warm fluids before induction of anesthesia as a safe method.