胎羊和羔羊对肺扩张的反应。
The response of foetal sheep and lambs to pulmonary inflation.
作者信息
Hughes D T, Parker H R, Williams J V
出版信息
J Physiol. 1967 Apr;189(2):177-87. doi: 10.1113/jphysiol.1967.sp008162.
Abstract
- Pulmonary inflation through a tracheostomy consistently produces an inspiratory response or gasp in the foetal lamb. This response is reversibly removed by vagal cooling or xylocaine local anaesthesia to the air passages. It is abolished by bilateral vagotomy. It is therefore suggested that this gasp response involves a reflex whose afferent pathway is in the vagus nerve.2. This gasp reflex is also found in lambs aged 1 hr to 30 days.3. Lambs and foetuses possess a cough reflex.4. A Hering-Breuer inflation reflex can be demonstrated in lambs.5. The gasp reflex is distinct from either of these last two.6. The significance of the gasp reflex in pre- and post-natal life is discussed.
摘要
通过气管切开术使肺膨胀，总能在胎羊身上引起吸气反应或喘息。这种反应可通过迷走神经冷却或对气道进行利多卡因局部麻醉而可逆性消除。双侧迷走神经切断术可消除该反应。因此，提示这种喘息反应涉及一种反射，其传入途径在迷走神经中。
在出生1小时至30天的羔羊中也发现了这种喘息反射。
羔羊和胎儿具有咳嗽反射。
可以在羔羊身上证明黑林-布雷尔膨胀反射。
喘息反射与后两种反射中的任何一种都不同。
讨论了喘息反射在产前和产后生活中的意义。
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