The value of hemodynamic changes induced by carotid sinus massage on the diagnosis of XXXX .

@entity1 @entity66 @entity1163 @entity453 @entity850
The aim of this study is to investigate the value of hemodynamic changes induced by carotid sinus massage (CSM) on the diagnosis of @entity453 ( @entity453 ). A total 108 @entity1 (mean age, 54 +/- 10 years, range 33-70) who had no significant @entity850 in the carotid artery by duplex ultrasonography (USG) and no history of @entity1163 were included in this study. Carotid sinus massage was performed before coronary angiography with monitoring of electrocardiography and blood pressure. The @entity1 were divided into three groups according to response to CSM: group 1 @entity1 had a decrease in blood pressure or < 10 beats/minute (bpm); group 2 @entity1 had a decrease between 10 and 20 bpm; and group 3 @entity1 had > 20 mm Hg decrease in blood pressure or > 20 bpm. Coronary angiography was performed after CSM in all @entity1 . There was @entity66 ( @entity66 ) in 23 cases, two- @entity66 in 24 cases, and three- @entity66 in 35 cases. Coronary angiography results were normal in 26 cases. The changes in systolic and diastolic blood pressures and heart rate before and after CSM correlated with number of @entity66 . These changes were highest in @entity1 with three- @entity66 , but lowest in @entity1 with normal coronary angiography. The number of diseased vessels and total coronary artery score were lowest in group 1, but highest in group 3. The specificity and sensitivity of CSM-induced > 10 mm Hg in blood pressure (BP) or > 10 bpm changes in heart rate in the diagnosis of @entity453 were 85% and 71%, respectively. The positive and negative predictive values were 93% and 49%, respectively in the diagnosis of @entity453 . At the end of this study, we concluded that CSM induced the fall in blood pressure and heart rate and was correlated with number of diseased vessels and the score of @entity453 . As dichotomized values, the decrease of > 10 mm Hg in blood pressure and/or > 10 bpm has highest specificity, sensitivity, and positive predictive value in the diagnosis of @entity453 .
