First degree AV block

A first degree AV block means that the node works slowly but each impulse gets through eventually. There will be a long PR interval (>200 msec or 5 small squares at standard settings).

See also: AV Blocks

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References

35 ECGs found. Sort by:
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In the ECGquest archives, this ECG has been tagged with: - Syncope Left Axis Deviation Normal rate Long PR RSR' Wide QRS First degree AV block LAFB RBBB 12-Lead ECG of the Week CC-BY-NC-SA
ECG of the Week – 26th November 2018 – Interpretation

This ECG is from a man in his 60s who presented after an episode of syncope.

This ECG shows bifascicular block (RBBB + LAFB) with a first degree AV block. He underwent pacemaker insertion.

In the ECGquest archives, this ECG has been tagged with: - Chest pain Left Axis Deviation Regular Long PR Pathological Q waves Wide QRS First degree AV block RBBB 12-Lead ECG Guru CC-BY-NC-SA
Instructors’ Collection ECG: Right Bundle Branch Block With Probable Previous M.I.

This ECG is from an 87 year old man who presented with chest discomfort.

In the ECGquest archives, this ECG has been tagged with: - Grouped Capture beat Sinus arrhythmia First degree AV block Second degree AV block 12-Lead ECG Interpretation Dr Ken Grauer CC-BY-NC-SA
ECG Blog #144 (Bradycardia – AV Block – Alternating BBB – High Grade).
In the ECGquest archives, this ECG has been tagged with: - Chest pain Long PR Wide QRS First degree AV block Interventricular conduction defect 12-Lead Dr Smith's ECG Blog CC BY-NC
A 50-something with h/o coronary bypass has chest pain and a ventricular paced rhythm

This ECG is from a man in his 50s who presented with chest pain on a background of previous CABG and dual chamber pacemaker.

This ECG shows sinus rhythm with first degree AV block and IVCD.

In the ECGquest archives, this ECG has been tagged with: - Incorrect Machine Interpretation RSR' Wide P waves Wide QRS First degree AV block RBBB 12-Lead ECG Guru Dawn Bean Altman Dr Ken Grauer Jason Roediger CC-BY-NC-SA
Right Bundle Branch Block With Machine Interpretation Error | ECG Guru – Instructor Resources
In the ECGquest archives, this ECG has been tagged with: - Dyspnoea Long PR First degree AV block 12-Lead Dr Smith's ECG Blog CC BY-NC
A Healthy 50-something with new dyspnea on exertion and an interesting ECG
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