chest press

• More than 1000 of the victims received some kind of medical assistance from witnesses . 712 received cpr . 439 received chest presses only . no mouth - to - mouth rescue breaths were given to them
  其中1000多人得到了来自旁人的各种医学援助。 712人被进行了心脏复苏。 439人只被实施了胸部按压，并没有进行人工呼吸。