Translated Titles

Vascular Variants of Central Nervous System and Tortuous Internal Carotid Arteries Presenting as Unilateral Positional Pulsatile Tinnitus




陳建志(Jiann-Jy Chen);莊毓民(Yu-Ming Chuang);楊菁華(Chin-Hua Yang);陳登郎(Dem-Lion Chen)

Key Words

搏動性耳鳴 ; 前交通動脈 ; 後交通動脈 ; 椎動脈 ; 內頸動脈 ; pulsatile tinnitus ; anterior communicating artery ; posterior communicating artery ; vertebral artery ; internal carotid artery



Volume or Term/Year and Month of Publication

6卷2期(2009 / 04 / 30)

Page #

150 - 155

Content Language


Chinese Abstract


English Abstract

Most of tinnitus is of unknown etiology. If it has pulsation the same as heartbeat, a neoplasm or vascular lesion should be impressed. A 39-yearold female presented left positional pulsatile tinnitus (PT) for over three years and hypertension for one year. The symptom has frequently attacked him when bending back or lying in the bed and then sudden head turning to the left side. All physical examinations, pure tone audiometry, electrocardiogram, and cervical spine X-ray showed normal, except high blood pressure. Neck duplex scanning showed atherosclerosis of carotid arteries, but right vertebral artery could not be detected. Magnetic resonance angiogram revealed lack of anterior communicating artery, bilateral posterior communicating artery, and right vertebral artery; besides, either of bilateral extracranial internal carotid arteries had a large tortuosity. Therefore, vascular variants of central nervous system and tortuous internal carotid arteries were diagnosed. The changed vascular resistance of his vertebral artery and carotid arteries, and decreased circulation of basilar artery, and compensatory increased perfusion of carotid arteries might cause PT when head turning to one side. Then an antihypertensive and an antiplatelet were recommended. Two weeks later, the symptom subsided and the blood pressure decreased. In the following half a year, it was uneventful.

Topic Category 醫藥衛生 > 醫藥衛生綜合