ECG Quest > Shapes > QRS complex > Fragmented QRS

Fragmented QRS

A fragmented QRS has a normal width but may have one or more additional R waves or S wave notches. It is a nonspecific sign, but if occurring in two contiguous leads it can suggest scarring from an old myocardial infarction.

See also: QRS complex

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In the ECGquest archives, this ECG has been tagged with: - Syncope Left Axis Deviation Regular Tachycardia Fragmented QRS 12-Lead ECG Guru CC-BY-NC-SA
Instructors’ Collection ECG : Syncope and tachycardia

This ECG is from a man in his 50s who presented with syncope on a background of diabetes, opiate abuse and possible prior cardiac disease.

This ECG shows a supraventricular tachycardia with evidence of P waves, left axis deviation and slightly wider QRS (106 msec) likely due to LAFB, tall QRS concerning for LVH and fragmentation in V2-4 suggesting prior MI.

In the ECGquest archives, this ECG has been tagged with: - Chest pain Dyspnoea Tachycardia Fragmented QRS Normal P waves Wide QRS Sinus tachycardia Wide complex tachycardia LBBB 12-Lead Serial 12-lead Dr Smith's ECG Blog Dr Ken Grauer CC BY-NC
Sudden Chest pain and SOB with a Wide Complex Tachycardia: Repeat after unsynchronised cardioversion

This ECG is from a man in his 60s who presented with sudden onset severe chest pain and dyspnoea. He had no medical history or medications. On arrival he was in extremis with altered mentation, cyanosis and diaphoresis . There was no palpable radial pulse. Pulse oximetry read HR 170 and saturation 53%. This was the repeat ECG after unsynchronised cardioversion.

In the ECGquest archives, this ECG has been tagged with: - Chest pain Dyspnoea Tachycardia Fragmented QRS Wide QRS Wide complex tachycardia LBBB 12-Lead Serial 12-lead Dr Smith's ECG Blog Dr Ken Grauer CC BY-NC
Sudden Chest pain and SOB with a Wide Complex Tachycardia

This ECG is from a man in his 60s who presented with sudden onset severe chest pain and dyspnoea. He had no medical history or medications. On arrival he was in extremis with altered mentation, cyanosis and diaphoresis . There was no palpable radial pulse. Pulse oximetry read HR 170 and saturation 53%. This was the initial ECG.

In the ECGquest archives, this ECG has been tagged with: - Chest pain Fragmented QRS Inferior ST depression Inverted T waves Premature ventricular complex 12-Lead ECG of the Week Dr John Larkin CC-BY-NC-SA
ECG of the Week – 23rd July 2018 – Interpretation

This ECG is from a man in his 70s who presented with several episodes of ischaemic sounding chest pain on a background of known ischaemic cardiac disease.

In the ECGquest archives, this ECG has been tagged with: - Chest pain Dyspnoea Weakness Left Axis Deviation Regular Fragmented QRS Normal P waves Wide QRS Hyperkalemia 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. – returns with chest pain

This ECG is from a woman in her 70s who presented with chest pain and shortness of breath after several days of nausea and diarrhoea.

This ECG shows LBBB and appropriately discordant ST segments. The QRS is wider and the PR interval is longer than the previous ECG. The cause was hyperkalemia (7.2).

In the ECGquest archives, this ECG has been tagged with: - Left Axis Deviation Regular Fragmented QRS Normal P waves Wide QRS Hyperkalemia 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 treatment for hyperkalemia

This ECG is from a woman in her 70s who presented with chest pain and shortness of breath after several days of nausea and diarrhoea. This was the repeat ECG after treatment for hyperkalemia.

This ECG shows the QRS is less wide and PR isn't as long. This is consistent with treated hyperkalemia.

In the ECGquest archives, this ECG has been tagged with: - Chest pain Normal Axis Fragmented QRS Multi-vessel disease 12-Lead Serial 12-lead Dr Smith's ECG Blog CC BY-NC
30-something with chest pain, a fragmented QRS, and ST Elevation. – baseline ECG
In the ECGquest archives, this ECG has been tagged with: - Chest pain Normal Axis Fragmented QRS Multi-vessel disease 12-Lead Serial 12-lead Dr Smith's ECG Blog CC BY-NC
30-something with chest pain, a fragmented QRS, and ST Elevation. – next AM