ECG Quest > Rhythms > Sinus Rhythms > Sinus arrhythmia

Sinus arrhythmia

Sinus arrhythmia resembles a normal sinus rhythm except that the beat-to-beat rate varies with respiration. It is often seen in young people.

See also: Sinus Rhythms

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References

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In the ECGquest archives, this ECG has been tagged with: - Chest pain Lateral ST depression Sinus arrhythmia Acute Inferior MI 12-Lead Dr Smith's ECG Blog CC BY-NC
A 40 yo with Chest pain. Only ECG abnormality is minimal ST depression in I and aVL (computer interpretation: normal)

This ECG is from a man in his 40s who presented with 1 hour of chest pain.

This ECG shows sinus arrhythmia with slight ST depression in I and aVL. Serial ECGs showed evolution to an inferior STEMI, due to a 100% RCA occlusion.

In the ECGquest archives, this ECG has been tagged with: - Irregular Sinus arrhythmia 12-Lead ECG Guru CC-BY-NC-SA
Instructors’ Collection ECG: Irregular Rhythm in a Young Person

This ECG is from a healthy teenage male who presented with an irregular pulse.

This ECG shows sinus arrhythmia

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 Extreme Axis LA/RA electrode reversal Sinus arrhythmia 12-Lead ECG of the Week CC-BY-NC-SA
ECG of the Week – 15th October 2018 – Interpretation

This ECG is from a woman in her 40s who presented after an episode of chest pain.

In the ECGquest archives, this ECG has been tagged with: - Chest pain Wide P waves Sinus arrhythmia 12-Lead ECG of the Week Dr John Larkin CC-BY-NC-SA
ECG of the Week – 11th June 2018 – Interpretation
In the ECGquest archives, this ECG has been tagged with: - Bradycardia Normal Axis Early R wave transition Narrow QRS Normal P waves Normal PR Tall QRS Sinus arrhythmia Sinus bradycardia 12-Lead ECG of the Week Dr John Larkin CC-BY-NC-SA
ECG of the Week – 23rd April 2018 – Interpretation
In the ECGquest archives, this ECG has been tagged with: - Syncope Sinus arrhythmia Myocardial Bridging 12-Lead ECG Interpretation Dr Ken Grauer CC-BY-NC-SA
ECG Blog #150 (J-Point – ST Elevation – Pericarditis – Myocardial Bridge – Peaked T Waves – Early Repolarization)

This ECG is from A 19 year old male presented after a syncopal episode.

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).