ECG and Autonoimic Nerves in Chicks.
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概要
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Chick electrocardiogram (ECG) was recorded using a pair of bipolar silver electrodes surgically fixed to the right clavicle and the sternal crest. Background noises were canceled by calculating the average of cardiac electrical activity of each beat. PQ interval was constantly longer when RR interval was prolonged, while QT interval was not altered when RR interval was changed. The variation of both RR interval and PQ interval was abolished by intraperitoneal injection of atropine (5mg/kg). Atropine inverted T wave, which suggested that the electrical activities of cardiac ventricular cells as well as those of pacemaker SA-nodal cells is under the control of the parasympathetic nerve in control chicks.
- 日本家禽学会の論文
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