Angina pectoris definition
Pro Research Analysisby 
Searched over 200M research papers
Angina Pectoris Definition: Key Clinical and Pathological Features
Clinical Definition and Symptoms of Angina Pectoris
Angina pectoris is most commonly defined as a syndrome characterized by chest pain, pressure, or discomfort that is typically felt behind the breastbone (substernal), often radiating to the arms, and is usually triggered by physical exertion or emotional stress. The pain is generally short-lived, lasting from 30 to 60 seconds, and is relieved by rest or the use of nitroglycerin Kloner2017Scarlelt1940Kahn1928. The discomfort can also extend to other areas such as the jaw or arm, and is associated with a sense of tightness or "strangling" in the chest Ford2020Davies2001Cowan1931.
Pathophysiology and Causes: Coronary Artery Disease and Ischemia
The underlying cause of angina pectoris is most often a reduction in blood flow to the heart muscle (myocardial ischemia), which is usually due to narrowing of the coronary arteries from atherosclerotic plaques. This results in an imbalance between the oxygen supply and demand of the heart, especially during periods of increased activity or stress Kaski2016Keefer1928Davies2001. While coronary artery disease is the most common cause, other heart conditions such as aortic valve disease, hypertrophic cardiomyopathy, or severe hypertension can also lead to angina Kaski2016Davies2001.
Angina as a Syndrome, Not Just a Symptom
Modern understanding recognizes angina pectoris as a clinical syndrome with a well-defined pathological basis, rather than just a symptom of chest pain. It is now seen as a manifestation of underlying coronary artery disease, with the pain arising from insufficient blood supply to the heart muscle Scarlelt1940Kloner2017. The syndrome may present in various forms, and not all chest pain is due to angina, highlighting the importance of accurate diagnosis Scarlelt1940Kaski2016Libman1935.
Variability in Presentation and Diagnosis
The presentation of angina can vary widely among individuals. While the classic description involves chest pain on exertion that is relieved by rest, some patients may experience discomfort in other areas or have atypical symptoms. The diagnosis is based on clinical history, characteristic symptoms, and often further testing to confirm underlying coronary artery disease Ford2020Davies2001Kahn1928.
Conclusion
In summary, angina pectoris is a clinical syndrome marked by chest pain or discomfort due to reduced blood flow to the heart muscle, most commonly from coronary artery disease. It is typically triggered by exertion or stress and relieved by rest. Understanding angina as a syndrome with a clear pathological basis has improved both diagnosis and management, distinguishing it from other causes of chest pain and guiding appropriate treatment strategies Scarlelt1940Ford2020Kloner2017+2 MORE.
Sources and full results
Most relevant research papers on this topic
ANGINA PECTORIS: A CASE STUDY.
Angina pectoris is now a clinically defined syndrome with a generally agreed upon pathological basis, allowing for better understanding and prognosis of individual cases.
Stable Angina Pectoris: Definition, Clinical Presentation and Pathophysiologic Mechanisms
Angina pectoris is a clinical presentation of myocardial ischaemia caused by obstructive coronary atherosclerosis, with various pathophysiological mechanisms and potential exacerbating factors.
DOI