Koizuka I, Sakagami M, Doi K, Takeda N, Matsunaga T
Department of Otolaryngology, Osaka University Medical School, Suita, Japan.
Acta Otolaryngol Suppl. 1995;520 Pt 2:258-9. doi: 10.3109/00016489509125242.
Much attention has been paid to hearing results after stapes surgery, but the risks of vestibular disturbance has not been extensively studied. Postoperative spontaneous nystagmus was measured daily at bedside by portable ENG in order to evaluate the vestibular damage from stapes surgery. Thirteen patients underwent primary stapedotomy or stapedectomy from August 1, 1992 to June 30, 1993. Nystagmus toward the operated ear was observed in 3 cases, that toward the opposite ear in 2 cases, that changing from toward the operated ear to toward the opposite ear in 2 cases, that changing from toward the opposite ear to toward the operated ear in 2 cases and no nystagmus in 4 cases. There was no relationship between duration of nystagmus and that of dizziness. Nystagmus was thought to be due to the following: i) inner ear damage by operation, ii) postoperative perilymphatic fistula, iii) floating footplate, and iv) stimulation of hair cells by high potassium ion in the perilymph due to blood flow into the inner ear.
人们一直非常关注镫骨手术后的听力结果，但对前庭功能紊乱的风险尚未进行广泛研究。为了评估镫骨手术对前庭的损伤，术后每天在床边用便携式眼震电图仪测量自发性眼震。1992年8月1日至1993年6月30日，13例患者接受了初次镫骨切开术或镫骨切除术。3例观察到向患侧耳的眼震，2例观察到向对侧耳的眼震，2例由向患侧耳的眼震转变为向对侧耳的眼震，2例由向对侧耳的眼震转变为向患侧耳的眼震，4例无眼震。眼震持续时间与眩晕持续时间之间无相关性。眼震被认为是由以下原因引起的：i）手术对内耳的损伤，ii）术后外淋巴瘘，iii）镫骨足板浮动，iv）内耳血流导致外淋巴中高钾离子对毛细胞的刺激。
