Page 18, Electrocardiography, Dr. D. Penney

Other ECG Abnormalities (continued...)

Atrial fibrillation: The impulses take chaotic, random pathways in the atria (Figure 25). Since neither P waves nor flutter waves exist, no rate can be determined. The baseline is coarsely or finely irregular, while the ventricular response (QRS) is irregular, and slow or rapid.

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