1.意識の判定：両手で患者の肩を叩き.「おい.どうしたんだ？ 2.Check breathing: observe the patient’s chest rise and fall for 5-10 seconds, tell him there is no breathing; 3.Call for help, push the resuscitation trolley, defibrillator; 4.Determine whether there is a carotid artery pulsation; use the middle and index fingers of the right hand to draw from the cricoid cartilage in the middle of the trachea towards the proximal carotid artery pulsation, tell him there is no pulsation; 5.Loosen the collar and trouser belt; 6.Extra-thoracic cardiac compressions; at the midpoint of the line between the two nipples (1/3 of the lower part of the sternum), use the root of the palm of the left hand to press against the patient’s chest, overlap the two hands, the five fingers of the left hand are crossed. 3）.左手の手のひらの付け根で患者の胸にしっかり押し当て.両手を重ね.左手の5指をコックし.腕をまっすぐにして上体の力で30回強く押す（押す回数100回/分以上.押す深さ5cm以上）.7.気道を開き.頭を傾けて顎を上げる方法。 口腔分泌物なし.義歯なし；8.人工呼吸：人工簡易呼吸器を装着し.1回400～600mlの空気を送り.回数10～12回/分；9.連続2分間の高効率CPR.心臓圧迫：人工呼吸＝30：2の割合で.5サイクル作動；10.蘇生効果があるかどうかを判断（呼吸音を聞き.頚動脈脈を触りながら）する。 11.さらなる生命維持のために患者を整理する。