Abnormalities Caused by Cardiac Pathology

- Abnormalities Caused by Cardiac Pathology Abnormality Description Atrial fibrillation There are as many as 350 irregular P waves and 130—150 irregular QRS complexes per minute (Figure 50-15). FIGURE 50-15 > Atrial fibrillation. Atrial flutter This rapid fluttering of the upper chambers looks on the ECG like the pattern of teeth on a saw. The atrial rate is 2507350 per minute. Not all the impulses are conducted through the AV node, because they are coming too fast. There is some “blockage" at the AV node This is one type of heart block (Figure 50-16). FIGURE 50-16 D Atrial flutter.