Lead I: inversion of all complexes, aka ‘global negativity’ (inverted P wave, negative QRS, inverted T wave) Absent R-wave progression in the chest leads (dominant S waves throughout) These changes can be reversed by placing the precordial leads in a mirror-image position on the right ...
The retrograde P waves have disappeared. Retrograde P waves Example 5a Fast-Slow AVNRT: Narrow complex tachycardia ~ 135 bpm. Retrograde P waves following each QRS complex — upright in aVR and V1; inverted in II, III and aVL. Upright retrograde P waves in aVR Inverted retrograde P waves l...
Inverted flutter waves in II, III + aVF with atrial rate ~ 300 bpm Positive flutter waves in V1 resembling P waves The degree of AV block varies from 2:1 to 4:1 The diagnosis of flutter with variable block could be inferred here from the R-R intervals alone (e.g. if flutter waves...
ECG Basics including Rate, Rhythm, Axis calculations and interpretation of P, Q, R, S, T U waves, segments and basic ECG calculations
RVOT tachycardia in ARVD generally does not terminate with adenosine. Differentiation between idiopathic RVOT tachycardia and that caused by ARVD can be difficult and may rely on previous ECG findings as well as family history. In ARVD, the baseline ECG usually shows inverted T waves in right pre...
Inverted T waves are also seen in the inferior and lateral leads.This great ECG is reproduced from Hansen & Merchant (2007). Example 4Another example of apical HCMHigh precordial voltages. Deep T wave inversions in the precordial and high-lateral leads. There is also evidence of left atrial...
The LITFL Clinical Case Collection includes over 250 Q&A style clinical cases to assist ‘Just-in-Time Learning‘ and ‘Life-Long Learning‘. Cases are categorized by specialty and can be interrogated by keyword from the Clinical Case searchable database. Search by keywords; disease process; con...
Wiesbauer F, Kühn P.ECG Mastery:Blue Beltonline course: Become an ECG expert. Medmastery Kühn P, Houghton A.ECG Mastery:Black BeltWorkshop. Advanced ECG interpretation. Medmastery Rawshani A.Clinical ECG InterpretationECG Waves Smith SW.Dr Smith’s ECG blog. ...