Second degree AV block

A second degree AV block means that the AV node is only working intermittently to transmit the impulse through to the ventricles. This causes extra P waves to be present without a QRS complex after them. There are four main types: Mobitz type I (aka Wenckebach), Mobitz type II, 2:1, and a high grade block (3:1 or greater).

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In the ECGquest archives, this ECG has been tagged with: - Hypotension 12-Lead Nonspecific baseline artefact Bradycardia Extra P waves Irregular Peaked T waves Wide QRS Second degree AV block Hyperkalemia Dr Smith's ECG Blog CC BY-NC
What will you do for this altered and bradycardic patient? 29169

This ECG is from a woman in her 60s who presented from a nursing home with altered mental status, hypotension, hypoxia and bradycardia.

This ECG shows an irregular rhythm due to second degree AV block with wide QRS and peaked T waves. The cause was hyperkalemia.

In the ECGquest archives, this ECG has been tagged with: - 12-Lead Capture beat Grouped Sinus arrhythmia First degree AV block Second degree AV block ECG Interpretation CC-BY-NC-SA
ECG Blog #144 (Bradycardia – AV Block – Alternating BBB – High Grade). 8794
In the ECGquest archives, this ECG has been tagged with: - Hypertension Rhythm Strip Bradycardia Grouped Junctional escape Second degree AV block ECG Guru CC-BY-NC-SA
ECG Rhythms: AV Block | ECG Guru – Instructor Resources 8902
In the ECGquest archives, this ECG has been tagged with: - Rhythm Strip Extra P waves Second degree AV block LITFL CC-BY-NC-SA
AV Block 2nd degree, fixed ratio 3:1 473
In the ECGquest archives, this ECG has been tagged with: - 12-Lead Extra P waves Second degree AV block LITFL CC-BY-NC-SA
AV Block 2nd degree, fixed ratio 2:1 471
In the ECGquest archives, this ECG has been tagged with: - Rhythm Strip Second degree AV block Second degree AV block type 1 - Wenckebach ECG Guru CC-BY-NC-SA
ECG Basics: Second-degree AV Block With Characteristics of Type I and Type II 962