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Back中風最危險的不是深夜?研究揪出早晨「這3小時」風險飆升
中風最危險的不是深夜?研究揪出早晨「這3小時」風險飆升
Health
自由时报9 hours agoHealth3 min readChinaView translation

中風最危險的不是深夜?研究揪出早晨「這3小時」風險飆升

分析近1.2萬名中風患者的研究發現,早晨為中風好發時段。專家解析原因並提醒注意B.E.F.A.S.T.警訊。

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一項分析近1.2萬名患者的研究指出,早上6時至中午的中風發生率比其他時間高出近8成。專家指出此與血壓上升及血液凝集狀態有關,並呼籲透過B.E.F.A.S.T.口訣留意中風徵兆。

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Why It Matters

一項由美國拉什大學醫學院研究者進行的統合分析整理了31篇研究、共11816起中風病例。

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研究分析近1.2萬名中風患者發病時間,發現早上6時至中午的中風發生率,比一天其餘時間高出近8成;情境照。(圖取自Pexels)

〔編譯陳成良/綜合報導〕中風也有好發時段!一項分析近1.2萬名中風患者的研究發現,早上6時至中午的中風發生率,比一天其餘時間高出近8成。除了起床後血壓上升,血液凝集狀態也會隨生理時鐘改變,可能讓早晨成為中風較容易發作的時段。

《華盛頓郵報》9日報導,這項由美國拉什大學(Rush University)醫學院研究者進行的統合分析,整理31篇研究、共1萬1816起中風病例,結果發現,血栓阻塞血管造成的缺血性中風、血管破裂引發的出血性中風,以及短暫性腦缺血發作,都在早上6時至中午出現較高發生率。

美國中風協會以B.E.F.A.S.T.提醒民眾留意中風警訊,包括突然失去平衡、視力改變、臉部歪斜、手臂無力及說話困難,發現症狀應立即求助。(圖取自美國中風協會)

為什麼早晨風險較高?人體睡眠時血壓通常較低,接近起床時逐漸回升,起身活動後還可能進一步升高。此外,清晨血小板較容易聚集,血液中抑制血栓溶解的蛋白質也會增加,可能讓血管阻塞風險上升。

中風不只嘴歪、手無力 視力和平衡異常也要注意

中風常見症狀包括臉部歪斜、單側手腳無力及說話不清楚,但有些患者並沒有這些典型表現。一項研究發現,約七分之一中風患者發病時沒有上述症狀,反而可能突然失去平衡、走路不穩或視力改變。

美國中風協會以「B.E.F.A.S.T.」提醒民眾辨識中風警訊。除了臉部歪斜(Face)、手臂無力(Arms)及說話困難(Speech),也要留意突然失去平衡(Balance)或視力改變(Eyes);最後的T代表時間(Time),提醒民眾一旦發現這些症狀,就要立即求助。若突然出現任何一項警訊,應立即就醫,不要等待症狀自行消失。

中風治療講求時間。部分缺血性中風患者可接受血栓溶解或機械取栓;經影像檢查評估後,部分患者即使發病超過6小時,仍可能在24小時內接受取栓治療。若患者睡醒才發現異狀,醫師會詢問最後一次確認正常的時間,作為評估治療的重要依據。

高血壓是中風的重要危險因子。至於降血壓藥是否改在睡前服用,英國與加拿大兩項試驗都未發現睡前服藥能降低中風、心肌梗塞或死亡風險。研究人員提醒,民眾應規律服藥,不要自行更改時間;若想調整,應先與醫師討論。

Open Questions

  • 如何具體在清晨預防血栓形成?

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This article was originally published by 自由时报.

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