What condition is characterized by the ongoing death of heart tissue due to ischemia?

The condition characterized by the ongoing death of heart tissue due to ischemia is best described as ST elevation myocardial infarction (STEMI). This occurs when a coronary artery is completely occluded, leading to a significant reduction in blood flow to a portion of the heart muscle, which in turn results in ischemia and subsequent necrosis (death) of the affected heart tissue. The "ST elevation" part of the name pertains to specific changes observed on an electrocardiogram (ECG) that indicate severe damage to the heart muscle.

In the context of myocardial infarction, STEMI represents the most critical and extensive form of heart attack, where the damage to the heart tissue can result from prolonged ischemia if left untreated. Effective and timely interventions, such as reperfusion therapy, are essential to minimize the extent of tissue death and improve patient outcomes.

The other conditions listed relate to heart health but do not directly describe the prolonged tissue death due to ischemia in the same specific manner as STEMI.