RSR'

An RSR’ pattern has two positive R waves within the complex. The overall complex may be wide (complete bundle branch block) or narrow (incomplete bundle branch block). If the QRS is wide, this can be a sign of bundle branch block. If the QRS is not wide, it may either be an incomplete bundle branch block or V1 electrode misplacement (usually with T wave inversion in lead V2 and negative P waves in V1).

See also: Other waves

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References

    Books
    • Thaler, MS (2018) - The Only EKG Book You'll Ever Need, 9th edn, Lippincott Williams and Wilkins
    YouTube

ECG Library (25)

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In the ECGquest archives, this ECG has been tagged with: - Dyspnoea Palpitations 12-Lead RSR' Wide QRS RBBB EMergucate CC-BY-NC-SA
ECG of the Week – 8th April 2019 – Interpretation

This ECG is from a woman in her 30s who presented with palpitations and intermittent shortness of breath.

This ECG shows wide QRS with RSR' in V1 and wide S in V6, consistent with RBBB.

In the ECGquest archives, this ECG has been tagged with: - 12-Lead High V1/V2 misplacement RSR' Saddleback ST elevation Dr Smith's ECG Blog CC BY-NC
Saddleback ST Elevation. Is it STEMI? Is it type II Brugada?

This ECG is from a man in his 50s who presented with epigastric and chest pain.

This ECG shows saddleback ST elevation, but a RSR pattern in V1 that suggested lead misplacement. When the electrodes were repositioned there was no evidence of ischemia.

In the ECGquest archives, this ECG has been tagged with: - Syncope 12-Lead Left Axis Deviation Long PR Normal rate RSR' Wide QRS First degree AV block LAFB RBBB Trifascicular block ECG of the Week CC-BY-NC-SA
ECG of the Week – 26th November 2018 – Interpretation

This ECG is from a man in his 60s who presented after an episode of syncope.

This ECG shows bifascicular block (RBBB + LAFB) with a first degree AV block. He underwent pacemaker insertion.

In the ECGquest archives, this ECG has been tagged with: - 12-Lead Absent P waves Bradycardia Irregular Normal Axis RSR' Wide QRS Atrial fibrillation ECG of the Week CC-BY-NC-SA
ECG of the Week – 1st October 2018 – Interpretation

This ECG is from a man in his 80s who presented feeling generally unwell and nauseous, on a background of chronic atrial fibrillation, diabetes and hypertension.

In the ECGquest archives, this ECG has been tagged with: - Dizziness Dyspnoea Syncope 12-Lead Right Axis Deviation RSR' Tachycardia Wide QRS Wide complex tachycardia RBBB Pulmonary embolism Dr Smith's ECG Blog CC BY-NC
RBBB. Is there ST Elevation in III and aVR, with reciprocal ST depression in I and aVL?

This ECG is from a man of unknown age who presented with dizziness and dyspnoea on a background of stage 4 lymphoma. He was tachycardic, tachypnoeic (31) and hypoxic (SpO2 79%). The lungs were clear on auscultation.

In the ECGquest archives, this ECG has been tagged with: - 12-Lead Incorrect Machine Interpretation RSR' Wide P waves Wide QRS First degree AV block RBBB ECG Guru CC-BY-NC-SA
Right Bundle Branch Block With Machine Interpretation Error | ECG Guru – Instructor Resources
In the ECGquest archives, this ECG has been tagged with: - Chest pain 12-Lead Concordant ST elevation Inverted T waves Narrow QRS RSR' Tall QRS Incomplete RBBB LVH Dr Smith's ECG Blog CC BY-NC
Unusual ST Elevation in V1 and V2, and LVH, in a Patient with Chest Pain