Healio7y
QRS Complex
The QRS complex consists of the Q wave, the R wave and the S wave. The QRS complex comes after the P wave when the SA nodal action potential travels through the AV node to the ventricles to cause ...
Healio8mon
Determining Rate
The atrial rate is indicated by the frequency of the P waves. The ventricular rate is indicated by the frequency of the QRS complexes. In the absence of disease, the atrial rate should be the same ...
Medscape3y
The Resting Electrocardiogram in the Management of Patients With Congestive Heart Failure: Established Applications and New Insights
These ECG voltage attenuations are of extracardiac mechanism, and impact the amplitude of QRS complexes, P-waves, and T-waves, occasionally resulting also in shortening of the QRS complex and QT ...
Hosted on MSN1mon
Sinus Arrhythmia: What’s Normal vs. Irregular
Heart rate is between 60 and 100 beats per minute. P waves will be present and have the same shape throughout. A QRS complex will follow each P wave. The P-R intervals will be between 120 to 200 ...