ECG Quest > Shapes > PR interval & segment > PR segment depression

PR segment depression

A depressed PR segment is associated with pericarditis and atrial ischemia. It is also known as the PQ, PTa or PTp segment.

See also: PR interval & segment

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In the ECGquest archives, this ECG has been tagged with: - Chest pain Concordant ST elevation Discordant ST changes PR segment depression Wide QRS Myocarditis Pericarditis 12-Lead Dr Pendell Meyers Dr Smith's ECG Blog Dr Ken Grauer CC BY-NC
A patient with chest pain and dynamic ST elevation

This ECG is from a woman in her 40s who presented with chest pain that had been waxing and waning over the past 24 hours. She had a history of renal failure on dialysis, hypertension, diabetes and a normal catheterisation a year ago. This was her initial ECG.

This ECG shows sinus tachycardia with nonspecific intraventricular delay, tall QRS and widespread PR segment depression. The ST segments are all discordant apart from V4 and V1. These changes were dynamic over serial ECGs. The cath was again normal. Echo showed a trace of pericardial effusion. The diagnosis was myopericarditis.

In the ECGquest archives, this ECG has been tagged with: - Chest pain PR segment depression Widespread ST elevation Normal Sinus Rhythm Pericarditis 12-Lead ECG of the Week CC-BY-NC-SA
ECG of the Week – 24th December 2018 – Interpretation

This ECG is from a man in his 30s who presented with 2 days of positional left sided chest pain.

This ECG shows normal sinus rhythm with widespread ST elevation and PR depression. The diagnosis was pericarditis.

In the ECGquest archives, this ECG has been tagged with: - Normal Axis Standard Calibration PR segment depression Widespread ST elevation Pericarditis 12-Lead Dr Smith's ECG Blog CC BY-NC
ST Elevation after Stab Wound to the Heart

This ECG is from a young man presented after a stab wound to the chest. Rapid ED diagnosis of cardiac penetrating trauma was made by ED ultrasound, and the patient went to the OR and had a wound to the right atrium repaired.  There was no laceration of any coronary vessel.  He did well.  This ECG was recorded at day 3 because of tachycardia.