Undertake retrospective analysis clinical data of 20 noncausal syncope patients in hospital.

本研究对20例以不明原因性住院的患者临床资料进行回顾性分析。

He did not have inspiratory whoop or post-tussive syncope or vomiting.

他没有吸入性哮咳，咳后及呕吐。

It is a light and unabiding behave to healthy adults.

但对健康成年人来说，只是一种极轻微、极短暂的不适现。

The main causes of out-paties syncope include anxiety and fear, hypoglycemosis, drug allergic, environmental factors, posture and debility etc.

低血糖;药物过敏性;环境因素引起的;体位因素引起的;体质虚弱性等。

Syncope must be differentiated from epileptic seizures, although seizures due to brain hypoxia can occur in a syncopal episode.

必须与癫痫相鉴别，尽管在时也会生脑缺氧引起的癫痫。

Head up tilt table testing is not warranted in patients who hae experienced a single syncopal episode without injury in an intermediate or low risk setting.

倾斜试验不推荐用于曾经有过在低位现场所生过1次而没有受伤的患者。