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.
pseudonormalization
The temporary return of inverted T waves to upright appearance during acute ischemia, masking the severity of ongoing co...
pulseless electrical activity
A cardiac arrest rhythm where organized electrical activity is present on ECG but produces no detectable pulse or blood...
reperfusion arrhythmia
Cardiac rhythm disturbances occurring immediately following restoration of blood flow to previously ischemic myocardium...
ROSC
Return of spontaneous circulation during cardiac arrest resuscitation efforts.
rotational atherectomy
Percutaneous technique using high-speed rotational cutting to modify calcified coronary lesions.
Sgarbossa criteria
ECG criteria for diagnosing acute myocardial infarction in patients with left bundle branch block.
ST-segment elevation
ECG finding indicating acute myocardial injury, typically representing transmural ischemia requiring immediate intervent...
STEMI
ST-elevation myocardial infarction, a type of heart attack requiring immediate intervention.
synchronized cardioversion
The delivery of electrical shock timed to the QRS complex to convert organized arrhythmias with maintained circulation.
takotsubo cardiomyopathy
Stress-induced reversible heart muscle dysfunction mimicking acute coronary syndrome.
target vessel revascularization
Repeat intervention on the same coronary artery previously treated during index procedure.
telemetry monitoring
Continuous wireless monitoring of cardiac rhythm and vital signs in ambulatory patients.
temporary transvenous pacemaker
Temporary cardiac pacing system inserted through venous access for emergency rate support.
thrombolysis
Medical treatment using clot-dissolving medications for acute coronary syndromes.
thrombus aspiration
Catheter-based procedure to remove blood clots from coronary arteries during PCI.
TIMI flow
Standardized angiographic grading system for coronary blood flow assessment.
tombstoning
Extreme ST-segment elevation resembling a tombstone shape, indicating massive myocardial infarction.
torsades de pointes
Polymorphic ventricular tachycardia with characteristic twisting QRS pattern.
transcutaneous pacing
External electrical pacing through skin electrodes to maintain heart rate in patients with severe bradycardia or heart b...
troponin
Cardiac biomarker protein released during myocardial cell death or injury.
Type A aortic dissection
Life-threatening tear in ascending aorta requiring immediate surgical intervention.
unstable angina
Chest pain that occurs at rest or with minimal exertion, representing acute coronary syndrome without elevated cardiac b...
vasopressor
Medications that increase blood pressure by constricting blood vessels, used in cardiac emergencies with shock or hypote...
VF
Ventricular fibrillation, a life-threatening cardiac arrhythmia causing cardiac arrest.