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在文献中已有很多报道描记哺乳动物在体心脏活动的方法,但均为在剖胸和人工呼吸条件下进行记录。这样记录的心脏活动不易排除呼吸运动的影响,而且在人工通气条件下维持呼吸,已经改变机体的正常状态,因此设法寻找一个在自然呼吸条件下,开胸记录心脏活动,并同时记录血压、呼吸的方法是很需要的。1962年贯文三郎[1]提出了在体心运动描记法,但是该法记录心脏活动的装置较为复杂,就录心脏活动的三个金属气鼓重量较大,在实验手术中要用圆针在心尖部穿线记录心尖的活动,这样容易引起冠状血管穿
There have been many reports in the literature describing mammalian activities in the heart of the body, but both undergoing thoracotomy and artificial respiration were recorded. This recorded cardiac activity is not easily ruled out by the effects of respiratory exercise and is maintained under artificial ventilation. It has changed the normal state of the body. Therefore, we try to find a heart under chest open recording of heart activity while recording blood pressure and breathing The method is very necessary. In 1962, Sanyaban Saburo [1] put forward a method of body motion tracing. However, the method of recording heart activity in this method is rather complicated. The three metal drums for recording heart activity have a large weight. During the experimental operation, round needles In the apical part of the record of apex activity, so easily lead to coronary vessels