Araz Server Ela, Edizer Deniz Tuna, Yiğit Özgür, Yasak Ahmet Görkem, Erdim Çağrı
a Otolaryngology Head and Neck Surgery Department , Istanbul Training and Research Hospital , Istanbul , Turkey.
b Otolaryngology Head and Neck Surgery Department , Turkey Training and Research Hospital, Izmir Bozyaka Training and Research Hospital , Izmir , Turkey.
Acta Otolaryngol. 2018 Jan;138(1):1-5. doi: 10.1080/00016489.2017.1373849. Epub 2017 Sep 8.
To identify the vertebral artery blood flow in different head positions in patients with positional vertigo with no specific diagnosis.
Patients with history of vestibular symptoms associated with changes in head position were enrolled into the study. Healthy volunteers were evaluated as control group. Doppler ultrasonography examination of the cervical segment of the vertebral arteries was performed under three different head positions: (i) supine position, (ii) head hyperextended and rotated to the right side and (iii) head hyperextended and rotated to the left side.
In the study group, right and left vertebral artery blood flow was significantly lower in the ipsilateral hyperextended position compared to standard supine position (respectively p = .014; p = .001), but did not differ significantly when compared between the standard supine and contralateral hyperextended positions (respectively = .959; p = .669). In the control group, left and right vertebral artery blood flow did not differ significantly when the head was hyperextended to the right or left sides compared to standard supine position (p > .05).
Our data demonstrated that the etiology of vestibular complaints in patients with undiagnosed positional vertigo might be related to impairment in vertebral artery blood flow according to head positions.
确定未明确诊断的位置性眩晕患者在不同头部位置时的椎动脉血流情况。
纳入有与头部位置变化相关前庭症状病史的患者进行研究。将健康志愿者作为对照组进行评估。在三种不同头部位置下对椎动脉颈段进行多普勒超声检查：（i）仰卧位，（ii）头部过伸并向右侧旋转，（iii）头部过伸并向左侧旋转。
在研究组中，与标准仰卧位相比，同侧过伸位时右侧和左侧椎动脉血流显著降低（分别为p = 0.014；p = 0.001），但标准仰卧位与对侧过伸位之间比较时差异无统计学意义（分别为p = 0.959；p = 0.669）。在对照组中，与标准仰卧位相比，头部向右侧或左侧过伸时左侧和右侧椎动脉血流差异无统计学意义（p > 0.05）。
我们的数据表明，未确诊的位置性眩晕患者前庭症状的病因可能与根据头部位置的椎动脉血流受损有关。
