ECG features and causes of left axis deviation (LAD) using the hexaxial reference system. QRS axis between -30 and -90 degrees
EKG differential diagnosis. Differentials based on specific ECG findings. Book: ECGs for the Emergency Physician 1 and 2; LITFL ECG Library
Assessment, interpretation of ECG Conduction Blocks including first-degree, second-degree, third-degree, fascicular blocks - ECG Library
Biatrial enlargement is diagnosed when criteria for both right and left atrial enlargement are present on the same ECG - EKG Library LITFL
Brief description of right atrial enlargement (P pulmonale) including ECG criteria for diagnosis and list of causes - EKG Library LITFL
Review of the EKG features of left atrial enlargement (LAE) aka Left atrial hypertrophy (LAH) - ECG Library LITFL. P mitrale
Narrow and broad/Wide QRS complex morphology Low/high voltage QRS, differential diagnosis, causes and spot diagnosis on LITFL ECG library
The J point is the the junction between the termination of the QRS complex and the beginning of the ST segment. EKG J-point
QT interval is the time from the start of the Q wave to the end of the T wave, time taken for ventricular depolarisation and repolarisation
ECG PR segment is the flat, usually isoelectric segment between end of the P wave and the start of the QRS complex.
Assessment / interpretation of the EKG PR interval. ECG PR interval is the time from the onset of the P wave to the start of the QRS complex.
The characteristic ECG findings in the Wolff-Parkinson-White syndrome include a slurred upstroke to the QRS complex (the Delta wave)