Synopsis
Build a time-critical, discriminating cardiovascular history that identifies instability, separates likely mechanisms and directs the next test.
- Characterise every symptom by onset, provoking and relieving factors, quality, site or radiation, duration, associated features and trajectory.
- Typical angina has three features: constricting chest or neck, shoulder, jaw or arm discomfort; provocation by exertion; and relief by rest or glyceryl trinitrate within about 5 minutes.
- Do not use response to glyceryl trinitrate alone to diagnose cardiac pain; oesophageal pain may also improve.
- Ask directly about dyspnoea, orthopnoea, paroxysmal nocturnal dyspnoea, oedema, palpitations, presyncope and syncope.
- Establish vascular risk, prior cardiovascular disease, pregnancy or postpartum status, stimulant use, thrombosis risk and a three-generation sudden-death or cardiomyopathy history where relevant.
- Medication reconciliation must include adherence, antithrombotics, QT-prolonging drugs, rate-limiting agents, erectile-dysfunction drugs and non-prescribed products.
- A normal examination or resting ECG never excludes acute coronary syndrome or intermittent arrhythmia.
Key red flags
New or worsening pressure, heaviness or tightness, especially at rest or with autonomic symptoms, breathlessness or radiation; painless presentations occur, particularly with diabetes or older age.
Abrupt severe chest, back or abdominal pain, pulse or neurological deficit, new aortic regurgitation or unexplained hypotension warrants immediate aortic assessment.
Syncope during exertion, while supine, with structural heart disease, an abnormal ECG or a family history of young sudden death requires urgent specialist cardiovascular assessment.