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Cerebral blood flow of children with vasovagal syncope

Published online by Cambridge University Press:  02 January 2014

Barsan Tugba ,
Kilic Zubeyir ,
Uzuner Nevzat ,
Yildirim Ali ,
Ucar Birsen  and
Demir Tevfik
Barsan Tugba
Affiliation:
Department of Pediatric Cardiology, Eskisehir Osmangazi University, Eskisehir, Turkey
Kilic Zubeyir
Affiliation:
Department of Pediatric Cardiology, Eskisehir Osmangazi University, Eskisehir, Turkey
Uzuner Nevzat
Affiliation:
Department of Neurology, Eskisehir Osmangazi University, Eskisehir, Turkey
Yildirim Ali*
Affiliation:
Department of Pediatric Cardiology, Eskisehir Osmangazi University, Eskisehir, Turkey
Ucar Birsen
Affiliation:
Department of Pediatric Cardiology, Eskisehir Osmangazi University, Eskisehir, Turkey
Demir Tevfik
Affiliation:
Department of Pediatric Cardiology, Eskisehir Osmangazi University, Eskisehir, Turkey
*
Correspondence to: Y. Ali, Department of Pediatric Cardiology, Eskisehir Osmangazi University, Eskisehir 26480, Turkey. Tel: 0902222392979; Fax: 0902222395400; E-mail: yldrmaly@gmail.com
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Abstract

Introduction: We aimed to evaluate changes in the cerebral blood supply in children during vasovagal syncope and to clarify the diagnostic value of transcranial Doppler for vasovagal syncope. Materials and methods: Patients were divided into three groups. Group 1 consisted of 31 patients who were symptomatic and whose head-up tilt test was positive. Group 2 comprised 21 patients who were symptomatic but whose tilt test was negative. Group 3 included 22 healthy children. For the diagnosis of vasovagal syncope, the tilt test was applied. For the subjects of the patient and control groups, the tilt test was repeated. The flow rates of bilateral middle cerebral arteries were continuously and simultaneously recorded with temporal window transcranial Doppler. Results: There were no statistically significant differences between the three groups with respect to age and gender distribution (p>0.05). When the bed was at an upright position, the maximum blood flow rate of the right middle cerebral artery was lower in Group 1 than in Group 2, although the decrease was more significant in comparison to the healthy control group (p<0.05). The minimum blood flow rate of the right middle cerebral artery was lower in Group 1 than the Group 2, although the decrease was more significant in comparison with the healthy control group (p<0.05). The maximum blood flow rate of the left middle cerebral artery was significantly lower in Group 1 than in the control group (p<0.05). Conclusion: Minimum and maximum blood flow rates are significantly decreased in patients tilt test (+) patients with vasovagal syncope during orthostatic stress.

Keywords

Vasovagal syncopetranscranial Dopplerchildren
Type
Original Articles
Information
Cardiology in the Young , Volume 25 , Issue 2 , February 2015 , pp. 267 - 273
Copyright
Copyright © Cambridge University Press 2014 

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