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. (There is also a rare variation that has no relationship to respiration).

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ECG Library (23)

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In the ECGquest archives, this ECG has been tagged with: - Hypotension Syncope 12-Lead Sinus arrhythmia Sinus tachycardia High grade AV block Ventriculophasic sinus arrhythmia Acute Inferior MI Acute Posterior MI Right ventricular MI ECG Interpretation CC-BY-NC-SA
ECG Blog #168 (STEMI – complex AV Block – Laddergram – Calipers) 31936

This ECG is from a middle-aged woman who presented with syncope and hypotension.

This ECG shows sinus tachycardia with inferior ST elevation and reciprocal ST depression in aVL. Also ST elevation in V1 and ST depression in V2-4. The most likely cause was acute inferoposterior MI due to proximal RCA occlusion.

In the ECGquest archives, this ECG has been tagged with: - Chest pain 12-Lead Lateral ST depression Sinus arrhythmia Acute Inferior MI 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) 30428

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: - 12-Lead Irregular Sinus arrhythmia ECG Guru CC-BY-NC-SA
Instructors’ Collection ECG: Irregular Rhythm in a Young Person 30212

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 12-Lead Absent P waves Bradycardia Hidden P waves Irregular Narrow QRS Normal Axis Short PR Change in rhythm Junctional escape Multiple rhythms Sinus arrhythmia Sinus bradycardia Dr Smith's ECG Blog CC BY-NC
What is the Rhythm? 29505

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 12-Lead Bradycardia Changing PR interval Narrow QRS Normal P waves Short PR Junctional escape Sinus arrhythmia Sinus bradycardia ECG Interpretation CC-BY-NC-SA
ECG Blog #159 (Bradycardia – AV Block – AV Dissociation – Junctional) 28946
In the ECGquest archives, this ECG has been tagged with: - Chest pain 12-Lead LA/RA electrode reversal Extreme Axis Sinus arrhythmia ECG of the Week CC-BY-NC-SA
ECG of the Week – 15th October 2018 – Interpretation 27647

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 12-Lead Wide P waves Sinus arrhythmia ECG of the Week CC-BY-NC-SA
ECG of the Week – 11th June 2018 – Interpretation 25232
In the ECGquest archives, this ECG has been tagged with: - 12-Lead Bradycardia Early R wave transition Narrow QRS Normal Axis Normal P waves Normal PR Tall QRS Sinus arrhythmia Sinus bradycardia ECG of the Week CC-BY-NC-SA
ECG of the Week – 23rd April 2018 – Interpretation 19435
In the ECGquest archives, this ECG has been tagged with: - Syncope 12-Lead Sinus arrhythmia Myocardial Bridging ECG Interpretation CC-BY-NC-SA
ECG Blog #150 (J-Point – ST Elevation – Pericarditis – Myocardial Bridge – Peaked T Waves – Early Repolarization) 19189

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

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