Table of Contents
ISRN Anesthesiology
Volume 2011, Article ID 620905, 7 pages
Research Article

Retrospective Validation of New Simulation Software to Prevent Perioperative Hypothermia in Major Urologic Abdominal Surgery

1Department of Anesthesiology, Emergency and Intensive Care Medicine, University of Göttingen, Robert Koch-Straße 40, 37075 Göttingen, Germany
2Grundlagenentwicklung, Drägerwerk AG & Co. KGaA, Moislinger Allee 53-55, 23542 Lübeck, Germany

Received 5 September 2011; Accepted 23 October 2011

Academic Editor: A. S. Habib

Copyright © 2011 Anselm Bräuer et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Background. Perioperative hypothermia is still a major problem. Therefore, it would be useful to predict which warming method would prevent perioperative hypothermia in a particular patient. Methods. The simulation software “ThermoSim Vers. 5.07” was validated using the data of two prospective, randomized, and controlled studies. The diagnostic effectiveness was assessed by calculating sensitivity and specificity, positive predictive value (PPV), and negative predictive value (NPV) in the detection of perioperative hypothermia. Results. Sensitivity of the software was 100% (Study 1) and 94% (Study 2), specificity was 67% (Study 1) and 38% (Study 2), PPV was 60% (Study 1) and 50% (Study 2), and NPV was 100% (Study 1) and 90% (Study 2). Conclusions. The software is helpful in predicting which warming method is necessary to prevent perioperative hypothermia. Thermal treatment based on the prediction of the software will lead to some overtreatment, but will prevent perioperative hypothermia reliably.