Tag: ECG Waves

ECG LIBRARY basics LITFL 340 2

Epsilon Wave

Epsilon Wave Definition The epsilon wave is a small positive deflection (‘blip’) buried in the end of the QRS complex.It is the characteristic finding in arrhythmogenic right ventricular dysplasia (ARVD). ECG Examples of Epsilon Waves

ECG LIBRARY basics LITFL 340 2

Delta Wave

Delta Wave Overview The Delta wave is a slurred upstroke in the QRS complex often associated with a short PR interval. It is most commonly associated with pre-excitation syndrome such as WPW.The characteristic ECG findings

ECG LIBRARY basics LITFL 340 2

Osborn Wave (J Wave)

Osborn Wave (J Wave) Overview The Osborn wave (J wave) is a positive deflection at the J point (negative in aVR and V1)It is usually most prominent in the precordial leadsEponymously associated with John Jay

ECG LIBRARY basics LITFL 340 2

U Wave

U wave Overview The U wave is a small (0.5 mm) deflection immediately following the T waveU wave is usually in the same direction as the T wave.U wave is best seen in leads V2

ECG LIBRARY basics LITFL 340 2

T wave

T wave Overview The T wave is the positive deflection after each QRS complex.It represents ventricular repolarisation. Characteristics of the normal T wave Upright in all leads except aVR and V1Amplitude < 5mm in limb

ECG LIBRARY basics LITFL 340 2

R wave

R wave Overview The R wave is the first upward deflection after the P waveThe R wave represents early ventricular depolarisation Abnormalities of the R wave There are three key R wave abnormalities: Dominant R