Final answer:
For an infant under CPR with an organized rhythm but no pulse, the correct intervention is to continue cardiopulmonary resuscitation. The focus should be on high-quality chest compressions to maintain blood flow, particularly to the brain.
Step-by-step explanation:
When an infant presents with CPR in progress and the cardiac monitor shows an organized rhythm with a rate of 70 but without a pulse, the most appropriate intervention is to continue cardiopulmonary resuscitation (CPR). This response is indicated because, despite the presence of a rhythm on the monitor, the lack of a detectable pulse suggests that the infant is not perfusing adequately. The Apgar score, which assesses heart rate and respiration among other criteria, is used to gauge the health of a newborn and can indicate the necessity for resuscitation efforts. In such a critical state where normal electrical activity in the heart is compromised, CPR is essential to maintain blood flow, particularly to crucial organs like the brain, where irreversible damage can occur within minutes without it. The correct technique for CPR on an infant involves compressions that are at least 5 cm deep, at a rate of 100 compressions per minute, which aligns with the rhythm of the song 'Staying Alive' by the Bee Gees. It is imperative to perform high-quality chest compressions to maximize the chances of survival in the absence of spontaneous heart function.