Final answer:
Cardiac arrest is an emergency situation where the heart stops beating and requires immediate treatment such as defibrillation. Myocardial infarction, which is a heart attack, involves blockage of a coronary artery and death of heart tissue and has different treatment requirements. The correct answer is option: B) Cardiac arrest
Step-by-step explanation:
An emergency situation in which the heart completely stops beating is called Cardiac arrest. Cardiac arrest occurs when the heart can no longer adequately pump blood, leading to the failure of vital organs to function. This condition is a medical emergency that requires immediate intervention, such as the usage of an automated external defibrillator (AED) to deliver a shock and potentially restart the heart.
In contrast, Myocardial infarction, often referred to as a heart attack, involves the complete blockage of a coronary artery which leads to the death of cardiac muscle tissue. Symptoms commonly include chest pain and pressure, but in some cases, heart attacks may not present any symptoms. It is crucial to distinguish between the two conditions as their treatments and urgencies vary.