A device for providing guidelines for cardiopulmonary resuscitation (CPR) includes an input unit operable to receive a gender information of a CPR provider a. processing unit operable to process the gender information of the CPR provider and an output unit operable to provide an output. If the gender information of the CPR provider is male, the output unit provides an instruction to the CPR provider to place an end of heel of his hand over a distal end of a sternum during chest compressions. In addition, if the gender information of the CPR provider is female, the output unit provides another instruction to the CPR provider to place an end of heel of her hand approximately 1.5˜2.0 cm above a distal end of a sternum during chest. compressions.
