Analysis of forehead and sole deep temperature during cardiopulmonary bypass for the treatment of congenital heart diseases
Ohe, Y.; Iwabuchi, K.; Nakata, Y.; Imanishi, K.; Yoshiyuki, T.; Shiroma, K.; Suma, K.; Tsuji, T.
Masui. Japanese Journal of Anesthesiology 36(11): 1772-1776
1987
ISSN/ISBN: 0021-4892 PMID: 3446835 Document Number: 291210
The forehead deep temperature (F-DT) and the sole deep temperature (S-DT) were recorded using deep body thermometer (Terumo Corp.) during cardiopulmonary bypass (CPB) in 60 patients with congenital heart diseases (ASD 20 pts, VSD 20 pts and TOF 20 pts). The area between recorded curve and baseline was analyzed by digitizer and the calculated area ratio of F-DT to S-DT was examined with each disease. The area ratio of F-DT to S-DT during rewarming showed two characteristic patterns; the convergence group and the dissociation group. The number of patients in the convergence group were 15 with ASD, 9 with VSD and 6 with TOF, and the values of ratio of each group were 2.6 .+-. 0.3, 6.3 .+-. 1.5 and 4.5 .+-. 1.1 respectively. The area ratio of ASD group was significantly smaller than the patients with other diseases (P < 0.05). The number of patients in the dissociation group were 5 with ASD, 11 with VSD and 14 with TOF and the values of ratio of each group were 24.4 .+-. 8.0, 10.5 .+-. 2.1 and 18.0 .+-. 4.1 respectively. The patients in the convergence group and those patients whose area ratios were less than 10 in the dissociation group showed temperature difference of less than one degree (.degree.C) at the final stage of operation and needed no inotropic support. The area ratio of F-DT to S-DT derived from deep body temperature curve during CPB was useful to predict the hemodynamic prognosis of the patients after open heart surgery.