What is the difference between stable and unstable angina?

The distinction between stable and unstable angina lies primarily in the patterns of chest pain and the implications for patient health. Stable angina typically occurs with exertion or stress and is relieved by rest or with the use of nitroglycerin. This pattern indicates that the underlying heart issue is manageable and predictable, which aligns well with chronic conditions where patients can anticipate their symptoms.

On the other hand, unstable angina is characterized by chest pain that occurs at rest or with minimal exertion. It is more unpredictable and does not follow a regular pattern. This type of angina can signal a transition toward a heart attack, as it indicates that the heart muscle may not be receiving an adequate blood supply due to more severe blockages or ruptures in plaques within the arteries. The potential for progression to a myocardial infarction makes unstable angina a medical emergency, requiring immediate attention.

Thus, recognizing that stable angina is typically relieved by rest and follows a predictable pattern, while unstable angina signifies a more acute condition with a higher risk of serious cardiac events, solidifies the understanding of the significant differences between these two forms of angina.