STANDARD TECHNIQUE OF ARTIFICIAL RESPIRATION (Continued) 5. After two seconds swing forward again. Thus repeat unhurriedly twelve to fifteen times a minute the double movement of compression and release, a complete respira- tion in four or five seconds. 6. Continue artificial respiration without interruption until natural breathing is restored,—if necessary, four hours or longer or until a physician declares the patient dead. 7. As soon as artificial respiration has been started and while it is being continued, an assistant should loosen any tight clothing about the patient's neck, chest or waist. Keep the patient warm. Do not give any liquids whatever by mouth until the patient is fully conscious. 8. To avoid strain on the heart when the patient revives, he should be kept lying down and not allowed to stand or sit up. If the doctor has not arrived by the time the patient has revived, the patient should be given some stimulant such as one teaspoonful of aromatic spirits of ammonia in a small glass of water, or a hot drink of coffee or tea, etc. The patient should be kept warm. 9. Resuscitation should be carried on at the nearest possi- ble point to where the patient received his injuries. He should not be moved from this point until he is breathing normally, of his own volition, and then moved only in a lying position. Should it be necessary, due to extreme weather conditions, etc. to move the patient before he is breathing normally, resuscitation should be carried on during the time he is being moved. 10. A brief return of natural respiration is not a certain indication for stopping the resuscitation. Not infrequently the patient, after a temporary recovery of repiration, stops breathing again. The patient must be watched and if natural breathing stops, artificial respiraion should be resumed at once. 11. In carrying out resuscitation it may be necessary to change the operator. This change must be made without losing the rhythm of respiration. By this procedure no con- fusion results at the time of change of operator and a regular rhythm is kept up.