Final answer:
During CPR on a newborn, the baby's heart rate should be checked approximately every two minutes to evaluate the need for ongoing resuscitation and advanced life support measures if the heart rate remains below 60 beats per minute.
Step-by-step explanation:
After initiating cardiopulmonary resuscitation (CPR) on a newborn, healthcare professionals should check the baby's heart rate to assess the effectiveness of the compressions and the need for further intervention. According to current resuscitation guidelines, the baby's heart rate should be checked approximately every two minutes during CPR. If the newborn's heart rate remains below 60 beats per minute despite adequate ventilation and chest compressions, it is critical to continue CPR and consider advanced life support measures.
The assessment of a newborn's heart rate is part of the Apgar scoring system, which also evaluates skin color, reflex irritability, muscle tone, and respiration. These scores are taken at one minute and five minutes post-birth, with heart rate and respiration considered the most critical factors.