Thread by @ekgdx

1/ Let’s talk about PR Interval - Segment #CardioTwitter.

The PR interval represents the time between the onset of atrial depolarization and the onset of ventricular depolarization and reflects conduction through the AV node.

🧵by @ekgdx

2/ PR Interval

Criteria

✅ Normal PR interval: 0.12 - 0.20 sec.
✅ Prolonged PR interval: >0.20 sec.
✅ Short PR interval: <0.12 sec.

The term “PQ interval” is preferred by some EKG lover because it is the period actually measured unless the Q wave is absent.

#PR #interval

3/ The PR segment is the segment between the end of the P wave and the start of the QRS complex.

Criteria

✅ Normal PR segment: Usually isolectric.
✅ PR segment elevation: ≥0.5 mm.

PR segment elevation causes: Atrial ischaemia/infarction, myopericarditis, PE, others.

#ekgdx

4/ PR segment depression is considered when ≥0.8 mm.

Causes of PR segment depression include: Pericardial effusion, atrial ischemia/infarction, myopericarditis, pulmonary embolism, others.

#ekgdx #CardioTwitter #medicine #basic #MedTwitter #MedStudentTwitter #ecg #app

5/ EKGs courtesy of EKGDX

Did you know..

✅ EKGDX is the only software in the world capable of creating any EKG pattern. Very useful for universities or institutions that perform EKG tests.

✅ At the same time, it is a smart educational platform focused on EKG learning.

6/ We all have friends, colleagues or students who need to learn EKG or are passionate about it. Let them know.

In this world, we learn from each other.

If you want to know more about our EKG teaching method, read the following thread.

https://twitter.com/ekgdx/status/1582375688945836032?s=46&t=A7oDr0InlxlNBghz0cplMA