inal answer:
A myocardial infarction due to ischemia in the posterior descending artery results in a posterior MI, usually affecting leads V7 to V9. Complications can include arrhythmias, heart failure, and cardiac arrest.
Step-by-step explanation:
Ischemia to the posterior descending artery (PDA), which is a branch of the right coronary artery, can result in a type of myocardial infarction (MI) known as a posterior MI. This type of infarction primarily affects the posterior portion of the interventricular septum and the adjacent parts of the ventricles. When a posterior MI occurs, it is often associated with abnormal findings in the EKG leads corresponding to the affected area - typically leads V7 to V9, which are also referred to as posterior leads.
Some of the complications associated with an MI, including a posterior MI, can be serious and life-threatening. These may include heart arrhythmias, heart failure, cardiogenic shock, and cardiac arrest. Permanent damage to the cardiac muscle from an MI can also put an individual at risk of chronic heart diseases and complications.