ECG Basics | PR Segment | PR Segment Abnormalities |

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The PR segment is the flat, usually isoelectric segment between the end of the P wave and the start of the QRS complex.The PR segment is the flat, usually isoelectric segment between the end of the P wave and the start of the QRS complex.Atrial ischaemia
PR segment elevation or depression in patients with myocardial infarction indicates concomitant atrial ischaemia or infarction.
This finding has been associated with poor outcomes following MI, increased risk for the development of atrioventricular block, supraventricular arrhythmias and cardiac free-wall rupture.
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Cardiology
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