Emergency Cardiology Glossary
100 terms total — 24 showing — Last updated 15 Sep 2026
GRACE score GRACE
Risk stratification tool for predicting mortality in patients with acute coronary syndromes.
concordance
ECG pattern where QRS complexes in precordial leads all have same polarity, suggesting ventricular origin.
coronary steal phenomenon
Paradoxical reduction in blood flow to ischemic myocardium when coronary vasodilators preferentially dilate vessels supp...
CRUSADE score
Bleeding risk assessment tool for patients with non-ST elevation acute coronary syndromes.
culprit artery
The specific coronary vessel responsible for the acute coronary syndrome, typically identified by ECG changes and requir...
culprit lesion
The specific coronary artery stenosis or occlusion responsible for the acute coronary syndrome.
culprit vessel
The coronary artery responsible for the acute coronary syndrome being treated.
de Winter pattern
ECG finding indicating acute LAD occlusion without typical ST elevation.
defibrillation
The delivery of electrical current to terminate life-threatening arrhythmias such as ventricular fibrillation or pulsele...
door-to-balloon time
Time interval from hospital arrival to percutaneous coronary intervention for STEMI patients.
door-to-needle time
Time interval from hospital arrival to initiation of fibrinolytic therapy for acute STEMI.
dual antiplatelet therapy
Combination treatment with aspirin plus a P2Y12 inhibitor to prevent thrombotic events.
dyskinetic wall motion
Paradoxical outward movement of myocardial wall during systole, indicating transmural myocardial infarction.
ECMO
Extracorporeal membrane oxygenation used for severe cardiac and respiratory failure.
eFAST examination
Extended focused assessment with sonography for trauma, including cardiac evaluation.
electrical alternans
Beat-to-beat alternation in QRS amplitude or axis on ECG, most commonly indicating pericardial effusion with cardiac tam...
electrical storm
Multiple episodes of ventricular tachycardia or fibrillation requiring repeated interventions within 24 hours.
first medical contact time
Time when patient first encounters healthcare professional, either EMS or hospital arrival.
fractional flow reserve
Physiological measurement of coronary stenosis severity using pressure-wire assessment.
fusion beats
ECG complexes resulting from simultaneous activation of ventricles by both supraventricular and ventricular impulses.
GRACE risk score
A validated clinical prediction tool that estimates the risk of death or myocardial infarction in patients with acute co...
GRACE score
Risk stratification tool for predicting mortality in patients with acute coronary syndromes.
hemodynamic compromise
Clinical state where circulation is inadequate to maintain organ perfusion and blood pressure.
hemodynamic monitoring
Continuous assessment of cardiovascular function using invasive and non-invasive parameters.
hemodynamically significant
Medical condition causing measurable impairment of blood circulation and cardiac function.