Alt E, Hirgstetter C, Heinz M, Theres H, Blömer H
1st Medical Clinic, Technical University of Munich, West-Germany.
J Cardiovasc Surg (Torino). 1988 Jan-Feb;29(1):80-8.
In 17 pacemaker patients and 14 volunteers we studied the behaviour of central venous blood temperature and heart rate under different kinds of exercise. Data were recorded by means of 5F catheter placed at the right ventricle. Temperature was measured with a thermistor incorporated in the lead. We found the increase in central venous blood temperature to be dependent on the individual exercise capacity and work load performed. The maximum temperature increase seen was 1.7 degrees Celsius. Subjects with lower physical fitness showed a more pronounced increase in temperature and heart rate compared to more physically fit subjects at the same work load. Due to its close relationship to metabolic and circulatory parameters, central venous blood temperature represents an appropriate signal to control the rate of physiological pacemaker systems. A special algorithm also using the initial dip for rate control has been incorporated into a pacemaker system, that is currently under clinical investigation (Intermedics NOVA MR).
在17名起搏器患者和14名志愿者中，我们研究了不同类型运动下中心静脉血温度和心率的变化情况。数据通过置于右心室的5F导管记录。温度由导线内的热敏电阻测量。我们发现中心静脉血温度的升高取决于个体的运动能力和所承受的工作量。观察到的最大温度升高为1.7摄氏度。在相同工作量下，身体素质较差的受试者与身体素质较好的受试者相比，体温和心率升高更为明显。由于中心静脉血温度与代谢和循环参数密切相关，它是控制生理性起搏器系统速率的合适信号。一种特别的算法，即利用初始下降进行速率控制，已被纳入一个目前正在临床研究中的起搏器系统（Intermedics NOVA MR）。
