What Is Ischemia?

Cardiac ischemia happens when plaque and fatty matter narrow the inside of an artery to a point where it cannot supply adequate oxygen-rich blood to meet your heart’s needs. Heart attack can occur – with or without chest pain and other symptoms.
Ischemia is most commonly experienced during:
  • Exercise or exertion
  • Eating
  • Excitement or stress
  • Exposure to cold
Coronary artery disease or CAD can progress to a point where ischemia occurs even at rest. And ichemia can occur without any early warning signs in anyone with heart disease, although it is more common in people with diabetes.