What effect does the change in resting membrane potential on the propagation of the cardiac impluse?Why?

Question

Situation: a 63yearold man sudenly felt a crushing pain. He became weak & began to sweat profusely. He called his physician, who advised him to go to the hospital immdediately by ambulance. the tests made at the hospital confirmed his physician's belief that the patient had suffered a 'heat attack', that is, a major coronary artery had suddenly became occluded.
What effect does the change in resting membrane potential have on the propagation of the cardiac impulse?why?

Answer 1

The questions is not clear, but what happens is we all have plague build up in our coronary arteries. Once this plague reaches a certain stage the blood flow(which carries oxygen and nutrients to all muscles) is reduced or stopped. The heart muscle dies (like all muscles) without oxygen and dies, there by causing pain. The person then experiences a heart attack.