A medical device for assisting a user in manually delivering chest compressions and ventilations to a patient as part of cardiac resuscitation. The medical device comprises a feedback device (6) configured to generate auditory feedback cues to assist the user in timing the manual delivery of the chest compressions and the ventilations. The auditory feedback cues comprise a feedback cue for the chest compressions and a feedback cue for the ventilations. The device includes a processor, memory, and associated circuitry (8, 14) configured to determine cue times at which the auditory feedback cues are generated by the feedback device (6). The feedback cue for the chest compressions is a different sound from the feedback cue for the ventilations.
