這是陳衛華醫師為大家親自操作如何測試自己有沒有缺氧,方法簡單好用,請每天測試一下自己。
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按壓手指後將手放開,血液會回流、指甲甲床變回粉紅色是指「微血管回充」,跟血壓、血液循環比較有關,而與血氧濃度無關。

也就是說,血壓低者,末端循環可能較差,按壓時手指甲會變白,血液能不能及時、迅速回充,與血壓比較有關。不過,血壓低者,血氧濃度也可能比較不好。

對於高風險者(如呼吸有狀況者),必須要血氧機持續監測,也不能就看指甲顏色來判斷。

References

https://tfc-taiwan.org.tw/articles/5773
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