12-Lead ECG (2nd Edition) Edit edition

This problem has been solved:

Solutions for Chapter 15…

Ischemia impacts the heart’s section which is wedge-shaped. The wedge basically wider along the epicardium and thinner within the endocardium. The ischemia’s area is more negative compare to the nearby normal tissue and it causes a ST depression’s pattern.

Infarction is known as dead tissue. It doesn’t produce any action potential and that’s why it is neutral electrically. This infarcted region performs such as electrical ‘window’ within the myocardium’s wall. While seeing via this window, an electrode may perceive the opposite wall.

Ischemia causes towards injury and finally infarction. Whenever the cells are died, they actually die in the order of the branch’s distribution perfusing that myocardium’s section, thus, the infracted section will be wedge-shaped.

Injury and Ischemia are reversible. The ischemia and injury’s symptomatic appearance is the pain in the chest. Injury or Ischemia grow since the heart’s demand are quickly overcome or might not met the area’s blood supply or whatever is the reason. But either an increase in demand or decrease in supply can cause the injury or ischemia to develop. Inappropriately infarct i.e. the death of the cell is irreversible.

So, the statement is .