Study of heat dissipation to the lung from a thermal ventricular assist system.
Study of heat dissipation to the lung from a thermal ventricular assist system.
复制标题
研究热心室辅助系统向肺部散热。
DOI：
10.1097/00002480-198907000-00093
复制
发表时间：
1989
期刊：
影响因子：
--
通讯作者：
Nosé,Y
中科院分区：
文献类型：
--
作者：
Fujimoto,L;Navarro,R;Kiraly,R;Emoto,H;Nosé,Y
热动力左心室辅助系统（LVAS）需要将热量耗散到周围的肺组织和血液中。在3头麻醉小牛（体重84.3+/-14.3 kg）中进行了该急性研究，以评价热量耗散至肺组织的机制。将加热器放置成与左肺表面和骨骼肌组织接触。与肌肉组织相比，在相同的表面温度下，肺的热通量大约高出三倍。对于恒定的热通量，肺界面温度往往与心输出量和排血量成反比。这项初步研究表明，热LVAS产生的热量水平可以有效地消散到肺部，气流和血液流动的对流机制起着主要作用。
The thermally powered left ventricular assist system (LVAS) requires that heat be dissipated to surrounding lung tissue and blood. This acute study was conducted in three anesthetized calves (weighing 84.3+/-14.3 kg) to evaluate the mechanisms involved in the dissipation of heat to the lung tissue. The heaters were placed in contact with the left lung surface and skeletal muscle tissue. Compared to the muscle tissue, heat flux to the lung was approximately three times higher for the same surface temperatures. For a constant heat flux, lung interface temperature tended to vary inversely with the cardiac output and ventilatory flow. This preliminary study demonstrated that the level of heat generated by the thermal LVAS can be effectively dissipated to the lung, with the convection mechanisms of airflow and blood flow playing a major role.