The reason an emergency occurs in most cardiac-related medical emergencies is due to
a. reduced blood flow to the myocardium.
b. cardiac arrest.
c. loss of consciousness.
d. breathing difficulty.

Reduced blood flow to the myocardium.

Explanation:

Cardiovascular disease may be defined as the disease that affects the functioning of the heart and blood vessels. Different cardiovascular diseases are heart attack, arteriosclerosis and heart failure.

The heart problems mainly occur due to the irregular blood flow in the myocardium. The reduced blood flow in the myocardium causes the emergency medical situation for the patient. The individual requires proper medical attention.

Thus, the answer is option (A).

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