ECG Quest > Rhythms > Other Rhythms > Change in rhythm

Change in rhythm

A change in rhythm can be either abrupt (e.g. sudden onset SVT) or gradual (e.g. slowing of rate between sinus tachycardia and normal sinus rhythm).

See also: Other Rhythms

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In the ECGquest archives, this ECG has been tagged with: - Loss of consciousness Seizure Irregular Narrow QRS Wide QRS Atrial fibrillation Change in rhythm 12-Lead Dr Smith's ECG Blog CC BY-NC
What is this tachycardia that alternates from wide to narrow to wide?

This ECG is from a patient in their 50s who presented unconscious and tachycardic after a seizure.

This ECG shows alternating wide and narrow complex tachycardias at the same rate, likely due to aberrancy.

In the ECGquest archives, this ECG has been tagged with: - Tachycardia Wide QRS Change in rhythm Wide complex tachycardia Bifascicular block LAFB RBBB Positive Sgarbossa criteria 12-Lead Dr Smith's ECG Blog CC BY-NC
What is this rhythm? And what else does it show?

This ECG is from a man in his 60s who presented with abdominal pain dyspnoea and altered level of consciousness, in shock.

This ECG shows wide complex tachycardia with concordant ST elevation in V4-6, due to LAD occlusion. The rhythm was likely sinus tachycardia with RBBB and then LAFB mid way through the trace.

In the ECGquest archives, this ECG has been tagged with: - Change in rhythm ICD Overdrive Pacing Ventricular tachycardia 12-Lead ECG of the Week CC-BY-NC-SA
ECG of the Week – 4th February 2019 – Interpretation

This ECG is from a man in his 70s who presented after a shock delivery from his AICD.

This ECG shows a run of VT terminated by anti-tachycardia pacing but followed by recurrent VT.

In the ECGquest archives, this ECG has been tagged with: - Chest pain Dyspnoea Bradycardia Irregular Normal Axis Absent P waves Hidden P waves Narrow QRS Short PR Change in rhythm Junctional escape Multiple rhythms Sinus arrhythmia Sinus bradycardia 12-Lead Dr Smith's ECG Blog Dr Ken Grauer CC BY-NC
What is the Rhythm?

This ECG is from a young man who presented shortly after a 45 min episode of palpitations, shortness of breath, chest pressure and presyncope. He was an athlete.

This ECG shows marked sinus bradycardia with AV dissociation by default (not AV block) with junctional escape beats.

In the ECGquest archives, this ECG has been tagged with: - Chest pain Dyspnoea Bigeminy Change in rhythm Ventricular Fibrillation Rhythm Strip Dr Pendell Meyers Dr Smith's ECG Blog Dr Ken Grauer Dr Stephen W. Smith CC BY-NC
Posterolateral OMI resulting in VT, then R-on-T phenomenon and VF – change of rhythm

This ECG is from a man in his 50s who presented with 1 hour of chest pain and shortness of breath. This was his repeat ECG while preparing for transport to the cath lab.

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