Diving First Aid for Professional Divers Practice Test 2026 – Comprehensive All-in-One Guide for Exam Success

The statement that the heart restarts after someone performs CPR in most cases is false. While cardiopulmonary resuscitation (CPR) is a critical emergency procedure that can help maintain blood circulation and oxygenation in a person who is in cardiac arrest, it does not guarantee that the heart will restart solely from the chest compressions and rescue breaths administered.

CPR aims to maintain some level of blood flow to vital organs until advanced medical help can arrive. However, the heart's return to a normal rhythm often requires an electrical shock delivered by an automated external defibrillator (AED) or advanced medical intervention. Therefore, while CPR is essential and can significantly improve the chances of survival, it is not effective in restarting the heart in every case without the assistance of defibrillation.

This understanding highlights the importance of immediate and effective CPR in conjunction with defibrillation for the best outcomes in cases of cardiac arrest.