J wave

A J wave occurs just after the QRS complex at the J point. If small, it is also known as J point notching or the Fishhook sign. Larger J waves are known as Osborn waves.

See also: Other waves

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ECG Library (14)

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In the ECGquest archives, this ECG has been tagged with: - Seizure 12-Lead J wave Widespread ST elevation Normal ST elevation Dr Smith's ECG Blog CC BY-NC
A Young Man with Sharp Chest pain

This ECG is from a teenage male who had a seizure.

This ECG shows diffuse ST elevation with prominent J waves and no reciprocal ST depression. The most likely cause was early repolarisation.

In the ECGquest archives, this ECG has been tagged with: - 12-Lead Anterior ST elevation J wave Lateral ST elevation Normal ST elevation Normal vs. abnormal anterior ST elevation Dr Smith's ECG Blog CC BY-NC
Three EKGs shown to me – which if any need emergent reperfusion?

This ECG is from a man in his 30s with unknown symptoms.

This ECG shows ST elevation (false positive) with clear J waves. Angiogram, troponins and serial ECGs were normal.

In the ECGquest archives, this ECG has been tagged with: - 12-Lead Inverted T waves J wave Tall QRS Normal Sinus Rhythm Normal Dr Smith's ECG Blog CC BY-NC
Two cases of ST Elevation with Terminal T-wave Inversion – do either, neither, or both need reperfusion?

This ECG is from a teenage male who presented with chest tightness and shortness of breath for 6 hours on a background of asthma.

This ECG shows sinus rhythm with tall QRS and associated repolarisation changes, benign T wave inversion in V3-V6 with J-waves and ST-elevation.

In the ECGquest archives, this ECG has been tagged with: - Chest pain Palpitations 12-Lead Anterior ST elevation Irregular J wave Widespread ST elevation Atrial fibrillation Normal ST elevation Dr Smith's ECG Blog CC BY-NC
Palpitations and Chest Tightness: Should You Activate the Cath Lab (or Give Thrombolytics)?

This ECG is from a man in his 20s with palpitations and chest tightness on a background of Wolff Parkinson White syndrome.

In the ECGquest archives, this ECG has been tagged with: - Chest pain 12-Lead Anterior ST elevation J wave Saddleback ST elevation Myocarditis Dr Smith's ECG Blog CC BY-NC
Anterior ST Elevation with Elevated Troponin, but with low T/ST ratio, case 2
In the ECGquest archives, this ECG has been tagged with: - 12-Lead Anterior ST elevation J wave Saddleback ST elevation Myocarditis Dr Smith's ECG Blog CC BY-NC
Anterior ST Elevation with Elevated Troponin, but with low T/ST ratio, case 2 baseline ECG
In the ECGquest archives, this ECG has been tagged with: - Chest pain 12-Lead Serial 12-lead J wave Lateral ST elevation Normal Axis Normal ST elevation Dr Smith's ECG Blog CC BY-NC
ST Elevation in I and aVL: do prehospital cath lab activation on these cases? – case 3
In the ECGquest archives, this ECG has been tagged with: - 12-Lead J wave Widespread ST elevation Normal ST elevation LITFL CC-BY-NC-SA
Benign Early Repolarisation

This ECG is from A fit 23 year old male had a routine ECG as a new military recruit.

In the ECGquest archives, this ECG has been tagged with: - 12-Lead J wave PR segment depression Widespread ST elevation Normal ST elevation LITFL CC-BY-NC-SA
BER vs pericarditis

This ECG is from Sadly, there is no clinical information available for this ECG.