Measurement of deep body temperature difference after open heart surgery: correlations with hemodynamics, endogenous catecholamine and renin activity
Kawamura, T.; Itaoka, T.; Nakata, S.; Wada, J.
Nihon Kyobu Geka Gakkai 29(2): 211-217
1981
ISSN/ISBN: 0369-4739 PMID: 7012251 Document Number: 170952
The measurement of deep body temperature was applied in patients for the detection of the low cardiac output syndrome after open heart surgery. Deep body temperature difference (DBTD) between the forehead and the sole of foot were measured after 10 A-C [aorto-coronary] bypasses and 5 cases of mitral valve surgery, concomitant with the measurements of hemodynamics, endogenous catecholamine and renin activity. The significance of DBTD after open heart surgery was studied. The similar changing patterns of DBTD were obtained. One hour after cardiopulmonary bypass (CPG), DBTD was 2.5 .+-. 0.4.degree. C and the systemic vascular resistance (SVR) was 22.2 .+-. 1.7 U. Three hours after CPB, DBTD and SVR were increased to 4.8 .+-. 0.4.degree. C and 40.5 .+-. 4.0 U, respectively. Six hours after CPB, DBTD was increased to 6.8 .+-. 0.4.degree. C but SVR was decreased to 26.8 .+-. 2.6 U. All changes were statistically significant. There was no significant correlation between DBTD and SVR in the early post-CPB. Endogenous catecholamine and renin activity were measured in the same period. No correlation was demonstrated between DBTD and endogenous catecholamine and renin activity. The similar temperature patterns may reveal the returning course of the peripheral vasculatures to normal state in the early post-CPB. If DBTD gets wider in the early post-CPB (up to 12 h), it does not necessarily predict low cardiac output syndrome.