What is the term for pain associated with deficient blood delivery to the heart that may be caused by the transient spasm of coronary arteries?

Angina Pectoris refers specifically to the chest pain or discomfort that occurs when the heart muscle doesn't receive enough blood, typically as a result of reduced blood flow due to either narrowed or spasming coronary arteries. This pain can often be triggered by physical exertion, emotional stress, or cold weather and tends to resolve with rest or the use of nitroglycerin. The condition serves as an indication that the heart is not receiving sufficient oxygen.

In contrast, a Myocardial Infarction, commonly known as a heart attack, occurs when a blockage prevents blood from reaching a part of the heart muscle for an extended period, leading to tissue damage. Coronary Artery Disease is a broader term that encompasses the buildup of plaque in the coronary arteries, which can ultimately lead to angina or myocardial infarction. The term "heart attack" is often used interchangeably with myocardial infarction but is less specific than angina pectoris when referring to transient episodes of pain due to reduced blood supply.