ECG Quest > Blocks > BBB/Hemiblocks > Interventricular conduction defect

Interventricular conduction defect

An interventricular conduction defect features a QRS > 100 ms that does not meet the criteria for a left or right bundle branch block. Causes include hyperkalaemia or tricyclic antidepressant overdose.

See also: BBB/Hemiblocks

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References

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In the ECGquest archives, this ECG has been tagged with: - Chest pain Dyspnoea Inferior ST elevation Wide QRS Interventricular conduction defect Acute Inferior MI 12-Lead Dr Smith's ECG Blog CC BY-NC
IVCD, Saddleback STE in III, with reciprocal STD in aVL: Is it pseudoOMI or OMI? Echo with Speckle Tracking gives the answer.

This ECG is from a woman in her 70s who presented with acute chest pain and dyspnoea on a background of hypertension and congestive heart failure.

This ECG shows inferior ST elevation with an abnormally wide QRS (intraventricular conduction delay). The cause was an acute inferior MI.

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: - Dyspnoea Left Axis Deviation Regular Tachycardia Normal P waves Wide QRS Sinus tachycardia Wide complex tachycardia Interventricular conduction defect 12-Lead Dr Pendell Meyers Dr Smith's ECG Blog CC BY-NC
Test almost all of your most important ECG rhythm interpretation skills with this case.

This ECG is from a woman in her 70s who presented with severe shortness of breath on waking during the night. This was the initial ECG.

This ECG shows a regular wide complex tachycardia most likely sinus tachycardia with LBBB. The cause was thought to be acute heart failure.

In the ECGquest archives, this ECG has been tagged with: - Dyspnoea Left Axis Deviation Regular Tachycardia Normal P waves Wide QRS Sinus tachycardia Wide complex tachycardia Interventricular conduction defect 12-Lead Dr Pendell Meyers Dr Smith's ECG Blog CC BY-NC
Test almost all of your most important ECG rhythm interpretation skills with this case. – after shock

This ECG is from a woman in her 70s who presented with severe shortness of breath on waking during the night. This was the repeat ECG after attempted cardioversion, BiPAP and nitroglycerin.

This ECG shows a regular wide complex tachycardia most likely sinus tachycardia with LBBB. The cause was thought to be acute heart failure.

In the ECGquest archives, this ECG has been tagged with: - Dyspnoea Left Axis Deviation Regular Tachycardia Normal P waves Wide QRS Sinus tachycardia Wide complex tachycardia Interventricular conduction defect 12-Lead Dr Pendell Meyers Dr Smith's ECG Blog CC BY-NC
Test almost all of your most important ECG rhythm interpretation skills with this case. – after shock 2

This ECG is from a woman in her 70s who presented with severe shortness of breath on waking during the night. This was the repeat ECG after attempted cardioversion, BiPAP and nitroglycerin.

This ECG shows a regular wide complex tachycardia most likely sinus tachycardia with LBBB. The cause was thought to be acute heart failure.

In the ECGquest archives, this ECG has been tagged with: - Chest pain Excessive discordant ST elevation Wide QRS Interventricular conduction defect Acute Anterior MI 12-Lead Dr Smith's ECG Blog CC BY-NC
Prolonged chest pain and Intraventricular Conduction Delay similar to Left Bundle Branch Block

This ECG is from a man in his 60s who awoke in the night with right sided chest pain, diaphoresis, nausea and vomiting. This was his first ECG recorded 8.5 hours later.

This ECG shows intraventricular conduction delay with morphology similar to LBBB, excessive discordant ST elevation in V4. The cause was an acute anterior MI.