THE CARDIOINHIBITORY CAROTID SINUS SYNDROME

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Abstract
A summary of the clinical features and ecg. findings in 11 cases of the cardioinhibitory carotid sinus syndrome. The diagnosis was based upon the occurrence of spontaneous syncopal attacks, the reproduction of the syncopal attacks by pressure over one or the other carotid sinus, and the ecg. registration of cardiac standstill during mechanical stimulation of the carotid sinus. The spontaneous or induced cardiac standstill in these cases is attributed to a state of increased sensitivity of vagal nerve endings in the heart, which results in exaggerated cardioinhibitory effects in response to various stimuli. In most of the patients in this group, there were findings to indicate that they were also suffering from myocardial and/or coronary artery disease.