Topical cardiac cooling--computer simulation of myocardial temperature changes.
Topical cardiac cooling (TC) is often used in cardiac surgery. We used a computer simulation to study temperature changes in the heart, especially in the right ventricular wall. A three-dimensional computer heart model, derived from Visible Human Data set, National Library of Medicine was used. The model is made from cubes, with spatial resolution of 1mm. Explicit Finite Different method and temperature diffusion equation were used to calculate new temperatures. Three different simulations were performed and simulated temperatures were drawn on a cross-section of heart model in different colors. The results show that areas not immersed into TC solution are less protected against ischemia. It is important not to rely solely on topical cooling but use appropriate method of myocardial protection technique.
Department of Cardiovascular Surgery, University Medical Center, Zaloska 7, SI-1000 Ljubljana, Slovenia. primoz.trunk@mf.uni-lj.si
Primoz
P
Trunk
Borut
B
Gersak
Roman
R
Trobec
D019412:Anatomy, Cross-Sectional; D000818:Animals; D001831:Body Temperature / Q000502:physiology; D006348:Cardiac Surgical Procedures / Q000379:methods; D003196:Computer Graphics; D003198:Computer Simulation; D006321:Heart / Q000033:anatomy & histology* / Q000502:physiology*; D006324:Heart Arrest, Induced; D006801:Humans; D007036:Hypothermia, Induced / Q000379:methods*; D021621:Imaging, Three-Dimensional; D008297:Male; D008955:Models, Cardiovascular; D013552:Swine