NDLI: The model of topical heart cooling during induced hypothermic cardiac arrest in open heart surgery

Content Provider	IEEE Xplore Digital Library
Author	Gersak, B. Trobec, R. Gabrijelcic, T. Slivnik, B.
Copyright Year	1995
Description	Author affiliation: Dept. of Cardiovascular Surgery, Univ. Med. Center, Ljubljana, Slovenia (Gersak, B.; Trobec, R.; Gabrijelcic, T.; Slivnik, B.)
Abstract	Presents a new method of parallel computer simulation in cardiac surgery. The heat equation is transformed to a set of difference equations which are solved numerically by the finite difference method. The authors are considering the level of moderate hypothermia with esophageal temperature of 28/spl deg/C. The average initial heart temperature after cardioplegia is supposed to be 11/spl deg/C. Two types of topical cooling are considered: first, the temperature of the cooling liquid (TCL) is held constant on 0.2/spl deg/C with a heat exchanger, and second, the initial TCL is set to 0.2/spl deg/C and no heat exchanger is used. The heart modelling method is based on a series of axial-slice images obtained by a human heart CT-scan. After definition of different substances the images are digitalised with the requested resolution and compounded into a three dimensional body. Using a parallel computer with 16 high speed processors, the resulting calculation is approximately ten times slower than the real cooling process in nature.
Starting Page	597
Ending Page	600
File Size	632058
Page Count	4
File Format	PDF
ISBN	0780330536
DOI	10.1109/CIC.1995.482735
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1995-09-10
Publisher Place	Austria
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Heart Cooling Temperature Difference equations Computer simulation Surgery Finite difference methods Esophagus Cardiology Biological system modeling
Content Type	Text
Resource Type	Article

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