Cosar Murat, Yaman Mehmet, Eser Olcay, Songur Ahmet, Ozen Oguz A
Canakkale 18 March University, Faculty of Medicine, Department of Neurosurgery, Canakkale, Turkey.
Med Hypotheses. 2008;70(5):941-3. doi: 10.1016/j.mehy.2007.07.051. Epub 2007 Nov 26.
Vertebral arteries form the basilar artery at the pontobulbar junction. The vertebral artery may have dominancy in one of them. The branches of basilar arteries supply blood for the vestibular nuclei and its connections. Vertigo is seen generally in the upper middle aged patients. Vertigo can be observed in dolichoectasia of basilar artery such as angulation and elongation, because of the diminished blood supply and changed hemodynamic factors of vestibular nuclei and its connections. We hypothesized that angulation or elongation of basilar artery can be estimated according to the unilateral vertebral artery dominant hypertensive patients. The basilar artery can angulate from the dominant side of vertebral artery to the recessive side. These angulation and elongation can effect the hemodynamic factors in absence of growing collateral arteries. So, the vertigo attacks may occur in these patients.
椎动脉在脑桥延髓交界处形成基底动脉。椎动脉可能在其中一支占优势。基底动脉的分支为前庭核及其连接结构供血。眩晕常见于中老年患者。在基底动脉迂曲扩张（如成角和伸长）时可观察到眩晕，这是由于前庭核及其连接结构的血液供应减少和血流动力学因素改变所致。我们假设，根据单侧椎动脉优势型高血压患者可估计基底动脉的成角或伸长情况。基底动脉可从椎动脉优势侧弯向非优势侧。在没有侧支动脉生长的情况下，这些成角和伸长会影响血流动力学因素。因此，这些患者可能会发生眩晕发作。
