单选题
A nurse performs cardiopulmonary resuscitation (CPR) for 1 minute on an infant without calling for assistance. In reassessing the infant after I minute of CPR, the nurse finds that he still isn't breathing and that he has no pulse. The nurse should then （）.
【正确答案】
D
【答案解析】After 1 minute of CPR, the nurse should call for assistance and then resume efforts. CPR shouldn't be stopped after it has been started unless the nurse is too exhausted to continue. A cycle usually ends with breaths, so the next beginning cycle after pulse check and summoning help would begin with chest compressions.