Preoperative blood pressure and intraoperative hypothermia during lower abdominal surgery

Abstract

These results suggest that preoperative SBP has some preventive effect on the decrease in intraoperative core temperature during lower abdominal surgery under general anesthesia.

ASPAN's Evidence-Based Clinical Practice Guideline for the Promotion of Perioperative Normothermia

“…Studies also showed that patients with a preoperative systolic blood pressure less than 140 mm Hg were more likely to develop hypothermia postoperatively. 58,66,69 Gender was investigated in two predictive models. 57 82 Four studies have tested the ability of the chemical dot thermometer to estimate an electronic oral temperature.…”

The Effects of Intraoperative Hypothermia Review of the Molecular Mechanisms of Action in Therapeutic Hypothermia

“…Using this model, the probability of hypothermia is estimated by the formula: probability = 1 / 1 + e -2 . If is estimated that the probability of hypothermia is > 0.5, the prediction of sensitivity is 81.5% and specificity is 83% (3). Surgical interventions that promote heat loss are those that open the serous cavities, chest or abdomen, such as shown in this study.…”

“…Heat loss is recorded and during surgery or afterwards. Numerous studies have been undertaken to assess the heat loss during major surgery (1)(2)(3)(4)(5)(6). Through multiple logistic regression analysis in SPSS 10.05 system has been identified as predictive factors of intraoperative hypothermia: 2 = 15.014 + 0.097 x (age) + 0.263 x (weight) -0.323 x (weight) -0.055 x (preoperative systolic blood pressure) -0.121 x (preoperative heart rate).…”

“…Hypothermia is aggravated by cold fluid administration, abdominal or thoracic wounds. The use of cold solutions in urologic surgery exposes the central temperature drop, which is more marked if intervention is performed under epidural anesthesia [3]. In epidural anesthesia, hypothermia is due to redistribution of heat between the center and periphery, the thighs being established to intense vasodilatation and heat loss [4,5].…”

“…Hypothermia reduces oxygen release in half, reducing the liver's ability to metabolize citrate and lactic acid and cause arrhythmia. The existence of hypothermia in surgical patient reflects failure thermoregulatory mechanisms [1][2][3].…”