摘要
用食道电生理法测定久居高原窦缓者的窦房结功能。检出9例SNRT>1400ms者,经药物阻滞植物神经后,复测各项参数均正常,IHR。均高于IHRP的正常预计范围。且阻滞前后的SNRT、SNRTC有明显的差异。9例均无器质性心脏病或慢性高山病,并除外了致迷走神经高亢的其他因素。一例从海拔3680m移居2260m已六年,随访中见其症状逐渐减轻,心率有所提高,揭示此类窦房结功能障碍与高原居民的迷走神经张力增高有关。属于“迷走神经高敏型”病态窦房结综合症,是以心动过缓为表现的病窦中的一种类型。
Patients with sinus bradycardia who have lived at above 2260m sea Level region for over fiften years have been examined the sinus function by transesophagecal atria pacing. We detected nine eases whose SNRT longer then 1400ms and after using the drugs which could block the autouomic nerves,their related parameters were become normal. The IHR. was higher tham the normal estimated range of IHRP,The SNRT and snrtc were significant difference after blocting.All of them have nat any heart diseases or chronic mountain sickness and have excepted any factors which conld excite the vagus nerve. One of them has migrated from 3680m sea level area to 2260m for six years and his symptoms were improved gradually,the heart rate increased. These results suggested that the sinus dysfunction is related to hypertonic vagus in high altitude residents and is a from of sss whieh be caused by hypersensitivity of vagus.
出处
《高原医学杂志》
CAS
1993年第2期43-45,共3页
Journal of High Altitude Medicine
关键词
高原
窦房结功能
植物神经
hihg altitude
sinus node function
autonomic nerves
