Preventing hypothermia: convective and intravenous fluid warming versus convective warming alone

Study Objective: To test the hypothesis that warming intravenous (IV) fluids in conjunction with convective warming results in less intraoperative hypothermia (core temperature <36.0°C) than that seen with convective warming alone. Design: Prospective, randomized study. Setting: University affili...

Full description

Saved in:

Bibliographic Details
Published in:	Journal of clinical anesthesia Vol. 10; no. 5; pp. 380 - 385
Main Authors:	Smith, Charles E, Desai, Ronak, Glorioso, Virgilio, Cooper, Antonio, Pinchak, Alfred C, Hagen, Joan F
Format:	Journal Article
Language:	English
Published:	United States Elsevier Inc 01-08-1998
Subjects:	Adult Analgesics, Opioid - therapeutic use Anesthesia Recovery Period Anesthesia, Inhalation Anesthetics, Inhalation - administration & dosage Body Temperature - physiology Body Temperature Regulation - physiology Equipment: convective warmer equipment: fluid warmer Esophagus - physiology Female Fluid Therapy - methods Hot Temperature - therapeutic use Humans Hypothermia - prevention & control Injections, Intravenous Intraoperative Complications - prevention & control Isoflurane - administration & dosage Male Meperidine - therapeutic use Middle Aged Prospective Studies Shivering - drug effects Shivering - physiology temperature: hypothermia equipment: fluid warmer Equipment: convective warmer temperature: hypothermia
Online Access:	Get full text
Tags:	Add Tag No Tags, Be the first to tag this record!

Description
Summary:	Study Objective: To test the hypothesis that warming intravenous (IV) fluids in conjunction with convective warming results in less intraoperative hypothermia (core temperature <36.0°C) than that seen with convective warming alone. Design: Prospective, randomized study. Setting: University affiliated tertiary care teaching hospital. Patients: 61 ASA physical status I, II, and III adults undergoing major surgery and general anesthesia with isoflurane. Interventions: All patients received convective warming. Group 1 patients received warmed fluids (setpoint 42°C). Group 2 patients received room temperature fluids (∼21°C). Measurements and Main Results: Lowest and final intraoperative distal esophageal temperatures were higher (p < 0.05) in Group 1 (mean ± SEM: 35.8 ± 0.1°C and 36.6 ± 0.1°C) versus Group 2 (35.4 ± 0.1°C and 36.1 ± 0.1°C, respectively). Compared with Group 1, more Group 2 patients were hypothermic at the end of anesthesia (10 of 26 patients, or 38.5% vs. 4 of 30 patients, or 13%; p < 0.05). After 30 minutes in the recovery room, there were no differences in temperature between groups (36.7 ± 0.1°C and 36.5 ± 0.1°C in Groups 1 and 2, respectively). Intraoperative cessation of convective warming because of core temperature greater than 37°C was required in 33% of Group 1 patients ( vs. 11.5% in Group 2; p = 0.052). Conclusions: The combination of convective and fluid warming was associated with a decreased likelihood of patients leaving the operating room hypothermic. However, average final temperatures were greater than 36°C in both groups, and intergroup differences were small. Care must be taken to avoid overheating the patient when both warming modalities are employed together.
Bibliography:	ObjectType-Article-2 SourceType-Scholarly Journals-1 ObjectType-Feature-1 ObjectType-News-3 content type line 23
ISSN:	0952-8180 1873-4529
DOI:	10.1016/S0952-8180(98)00049-X