ECG trace showing unstable angina pectoris. This is the symptom of paroxysmal pain consequent to myocardial ischaemia, usually of distinctive character, location and radiation. It is thought to be provoked by a transient stressful situation during which the oxygen requirements of the myocardium exceed that supplied by the coronary circulation.

Attribution 4.0 International (CC BY 4.0)

You can use this work for any purpose, including commercial uses, without restriction under copyright law. You should also provide attribution to the original work, source and licence. Read more about this licence.

Credit

ECG trace showing unstable angina pectoris. This is the symptom of paroxysmal pain consequent to myocardial ischaemia, usually of distinctive character, location and radiation. It is thought to be provoked by a transient stressful situation during which the oxygen requirements of the myocardium exceed that supplied by the coronary circulation. Wellcome Collection. Attribution 4.0 International (CC BY 4.0). Source: Wellcome Collection.