A combination of the Q wave, R wave and S wave, the “QRS complex” represents ventricular depolarization. This term can be confusing, as not all ECG leads contain all three of these waves ...
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 ...
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 ...
A 76-year-old woman presents with a persistently rapid heart rate that she attributes to her pacemaker. What does the ECG ...
Normal ECGs include common, training-related findings in athletes such as high QRS amplitude meeting voltage criteria for ... These include findings suggestive of cardiomyopathy such as T-wave ...
The regular arrhythmia occurring at the beginning of the electrocardiogram was identified as ventricular bigeminy. Single ventricular premature complexes (VPCs), as well as pairs and triplets of ...
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