Yenigun A, Ustun M E, Tugrul S, Dogan R, Ozturan O
Department of Otorhinolaryngology,Faculty of Medicine,Bezmialem Vakif University,Fatih,Istanbul,Turkey.
Neurosurgery Clinic,Konya Hospital,Turkey.
J Laryngol Otol. 2016 Dec;130(12):1115-1119. doi: 10.1017/S0022215116009117. Epub 2016 Oct 27.
An examination was conducted of the number, level, clinical association and treatment approaches for vertebral arterial loop formation in patients with this condition with and without concurrent cervicogenic dizziness, and classified them according to the vertebral artery segment in which it was present.
A cross-sectional retrospective study.
Thirty-seven patients who had undergone double-sided magnetic resonance angiography were examined; vertebral arterial loop formation was observed at only 1 level in 26 patients and at several levels in 9 patients. Segment one (V1) was involved in 78.3 per cent of cases and segment two (V2) was involved in 21.6 per cent. Symptoms in patients with vertebral arterial loop formation included: positional vertigo, in 100 per cent; and pulsatile tinnitus, in 83.7 per cent.
Loop formation at the vertebral artery was observed most often on the proximal side in patients with cervicogenic dizziness (78.3 per cent). The incidence on the left side was twice as high as on the right side.
对患有或未患有并发颈源性眩晕的此类患者椎动脉袢形成的数量、程度、临床关联及治疗方法进行检查，并根据其所在的椎动脉节段进行分类。
一项横断面回顾性研究。
对37例接受双侧磁共振血管造影的患者进行了检查；26例患者仅在1个节段观察到椎动脉袢形成，9例患者在多个节段观察到。78.3%的病例累及第一段（V1），21.6%累及第二段（V2）。椎动脉袢形成患者的症状包括：100%有位置性眩晕；83.7%有搏动性耳鸣。
在颈源性眩晕患者中，椎动脉袢形成最常出现在近端（78.3%）。左侧的发生率是右侧的两倍。
