Original study
Cardioinhibitory response to carotid sinus massage in patients with coronary artery disease

https://doi.org/10.1016/0167-5273(93)90060-TGet rights and content

Abstract

The relationship between cardioinhibitory response to the carotid sinus massage and the severity of coronary artery lesions and left ventricular impairment was investigated in 86 patients who underwent coronary angiography. The study group (Group 1) comprised 63 patients who had coronary lesions and the control group (Group 2) comprised 23 patients who had normal coronary arteries. There was no significant relationship between the severity of coronary artery lesions and the cardioinhibitory response to the carotid sinus massage in the study group. However, there was a positive correlation (r = 0.478, P < 0.01) between total left ventricular segment scores and the maximal change in RR interval (%) during the right carotid sinus massage in the study group. During the right carotid sinus massage, maximal change of RR interval (%) was significantly higher in patients who had segmental wall motion abnormalities than in patients who did not (83.0 ± 72.4% vs. 32.9 ± 42.5%, P < 0.01, respectively). In the patients who could have echocardiographic measurements there was negative correlation between fractional shortening value and maximal change of RR interval (%) (right massage; r = −0.482, P < 0.01, left massage; r = −0.334, P < 0.05). In conclusion, we found a significant relationship between the cardioinhibitory response to carotid sinus massage and the presence and severity of the segmental wall motion abnormalities and left ventricular impairment in patients with coronary artery disease.

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