EKGECG Interpretation Made Easy: A Practical Approach to Passing the ECGEKG Portion of NCLEX by Shareece Williams

Author:Shareece Williams [Williams, Shareece]
Language: eng
Format: epub
Tags: The ecg made easy
Publisher: Shareece Williams
Published: 2019-03-17T22:00:00+00:00

Figure 2. P-wave morphology in chest and limb leads.

FIGURE 2 (ABOVE) DOES not show that the P-wave in lead II might actually be slightly asymmetric by having two humps. This is often (but not always) seen on ordinary ECG tracings and it is explained by the fact that the atria are depolarized sequentially, with the right atrium being depolarized before the left atrium. The first half of the P-wave is therefore a reflection of right atrial depolarization and the second half is a reflection of left atrial depolarization. This is shown in Figure 3 (upper panel). Recall that the P-wave in V1 is often biphasic, which is also shown in Figure 3.

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