Stent implantation intervention is the treatment of choice for coronary artery disease. It can be chosen when severe coronary heart disease symptoms such as chest pain, limited activity tolerance, or even fainting occur.
1. Stable angina: drug-based, stenting can relieve symptoms and improve quality of life.
2. Non-ST-segment elevation acute coronary syndrome: very high-risk people need urgent (within 2h) intervention, and high-risk patients also need intervention.
Extremely high-risk features: chest pain lasting more than 30 minutes or without significant intervals; significant elevation of myocardial biomarkers and/or significant ST-segment depression (≥2mm) persisting or expanding; significant hemodynamic changes (severe hypotension, heart failure or cardiogenic shock); severe malignant arrhythmias (ventricular tachycardia, ventricular fibrillation, etc.).
High-risk features: age >70 years; history of infarction; coronary stenosis on previous imaging; after stenting or bypass grafting; recurrent episodes of chest pain over 24 hours; mild ST-segment depression (<2mm); mild elevation of myocardial biomarkers; and elevation of N-brain natriuretic peptide precursor, C-reactive protein, and so on.
3. ST-segment elevation acute myocardial infarction: categorized into direct, remedial, and after thrombolysis and recanalization.
Direct: within 12 hours of onset and persistent new ST-segment elevation or new left bundle branch block: within 12-48 hours if still suggestive of myocardial ischemia (chest pain manifestations and ECG).
Remedial: after thrombolytic therapy, the patient still feels significant chest pain, ST segment has been elevated and not significantly reduced, as soon as possible for remedial intervention.
After banyan thrombus recanalization: in patients who are stabilized after successful thrombolysis, the good time for intervention is 2~24 hours.
Coronary artery disease if the presence of symptoms is recommended to consult the doctor as soon as possible to avoid delaying the condition.