01.04 Cardio
01.04 Cardiology [PDF link]
Electrocardiogram (ECG): P wave, PR interval, Atrioventricular blocks (AV blocks), QRS complex, ST elevation (STEMI), ST depression / NSTEMI, T wave changes (TWI, peaked T waves), Left bundle branch block (LBBB), Right bundle branch block (RBBB), Left axis deviation (LAD), Right axis deviation (RAD), QT prolongation / QTc, Bi-fascicular block, Tri-fascicular block, Hypothermia ECG changes, Digoxin ECG changes
Arrhythmias: Wolff-Parkinson-White syndrome, Wellen's syndrome, Junctional escape rhythm
External links
QTc calculator: MDCalc
Other notes
ECG changes that may indicate current ischaemia or previous MI include (from NICE):
Pathological Q waves – > 40 ms (1 mm) wide, > 2 mm deep, > 25% of depth of QRS complex, and seen in leads V1-3 (see LITFL)
LBBB (new LBBB is always pathological)
ST-segment and T-wave abnormalities (eg T-wave flattening or elevation, or T-wave inversion).
