Final answer:
When non-reassuring heart tones are present, the first action is to initiate resuscitation measures, such as performing CPR.
Step-by-step explanation:
When non-reassuring heart tones are present, the first action that should be taken is to initiate resuscitation measures. This involves calling for emergency medical help and starting basic life support techniques, such as performing cardiopulmonary resuscitation (CPR).
CPR is a combination of chest compressions and rescue breaths given to a person whose heart has stopped or is not beating effectively. It helps maintain blood flow and oxygen delivery to vital organs until advanced medical help arrives.
By performing CPR, the heart rate can be improved, helping to restore normal heart function. It is critical to begin these actions promptly to improve the chances of a positive outcome.