Origin of ventricular reflexes caused by coronary arteriography.
Origin of ventricular reflexes caused by coronary arteriography.
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冠状动脉造影引起的心室反射的起源。
DOI：
10.1136/hrt.39.9.967
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发表时间：
1977
影响因子：
--
通讯作者：
A. García
中科院分区：
文献类型：
--
作者：
F. Pérez;A. García
在过去，通常使用开胸技术在麻醉动物身上研究左心室反射。我们研究了200名患者在冠状动脉造影术中发生的心动过缓的程度，以期定位室性反射的起源。我们已经将窦率的降低与冠脉树的解剖分布和完整性联系起来。心动过缓的程度不受窦房结或房室结动脉来源的影响，而与向供应左室下壁的动脉内注入造影剂有很好的相关性。一过性窦性停搏的发生也与同一条动脉内注射有关。结果提示，副交感受体主要位于左心室下壁。这可以很好地解释急性下壁心肌梗死中常见的心动过缓、低血压和外周血管扩张的临床表现。
Left ventricular reflexes have in the past been investigated in anaesthetised animals, generally using an open chest technique. We have studied the degree of bradycardia occurring during coronary arteriography in 200 patients with a view to localising the origin of the ventricular reflexes. We have correlated the decrease of sinus rate with the anatomical distribution and integrity of the coronary tree. The degree of bradycardia was not influenced by the origin of the sinus node or the AV node arteries, while there was a good correlation with the injection of contrast medium into the artery which supplied the inferior wall of the left ventricle. The occurrence of transient sinus arrest was also correlated with the injection into the same artery. The results suggest that the parasympathetic receptors are located mainly in the inferior wall of the left ventricle. This may well be the explanation for the clinical picture of bradycardia, hypotension, and peripheral vasodilatation often seen in acute inferior myocardial infarction.