Predictors of Postoperative Pain

"Thermal stimuli will be administered to the ventral surface of the dominant forearm and then to the lower abdomen (surgical site)using the Thermal Sensory Analyser. Each thermal testing trial will be separated by approximately 2 min and at a separate site.~To measure the thermal pain threshold temperature, The thermode will be applied to the ventral surface of the dominant forearm and the temperature will be increased at 1°C/s from 35 to 50°C.~To measure the Suprathreshold Thermal Pain Intensity and unpleasantness, Stimulus responses for noxious heat stimuli will be performed by applying phasic heat stimuli at 8 different temperatures (35, 43, 44, 45, 46, 47, 48, and 49°C)."