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1/ Let’s talk about P waves #CardioTwitter.

The P wave is the first positive deflection on the EKG and represents atrial depolarization. The first half represents right atrial depolarization and the second half represents left atrial depolarization.

By @ekgdx Image
2/ Normal P wave

Criteria

✅ Axis: 0° to +75°.
✅ Amplitude (L leads): <2.5 mm.
✅ Amplitude (P leads): <1.5 mm.
✅ Duration: 0.08 - 0.11 sec. 
✅ Morphology: Upright in I, II, aVF and inverted in aVR.

#Pwaves #ecg #ekg #ekgdx #medicine #MedTwitter #MedStudentTwitter #basic
3/ Peaked P wave

The morphology is peaked with amplitude ≥2.5 mm, usually in II, III and aVF.

The peaked P wave is a typical characteristic of right atrial abnormality/enlargement. 

Causes: PE, COPD, congenital heart disease, pulmonary hypertension, normal variant, others. Image
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