In severe cases where the heart's ability to control and trigger heartbeats may be completely ineffective or unreliable, heart block can usually be treated by inserting an artificial pacemaker, a medical device that provides correct electrical impulses to trigger heart beats, compensating for the natural pacemaker's unreliability. Therefore, heart block frequently has no effects, or mild and occasional effects, and is not life-threatening in the vast majority of cases, and is usually treatable in more serious cases.
Sudden cardiac arrest is not a heart attack, even
though you may hear the terms “heart attack” or "massive heart attack"
used to describe it. A heart attack happens when blood flow to a part of the
heart is slowed or stopped, usually because of plaque rupture in one of the
coronary arteries.
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