But critically ill patients don't have much time. For a patient whose heart has stopped, there are four minutes before lack of oxygen causes irreversible brain damage. ER doctors must be able to restart a patient's respiration and pulse quickly, stabilize his condition and provide preliminary care.
但是救治急症病人的時間又很短，像是心臟停止跳動四分鐘以上，腦部即會因為缺氧而造成不可恢復的缺損，因此急診醫生必須有能力在短時間內喚回患者的呼吸、脈搏等生命跡象，並穩定情況，進一步為病人做好初步醫療。