What are the P waves like in atrial flutter?

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What are the P waves like in atrial flutter?

In atrial flutter, you have rapid, organized atrial activity that creates flutter waves rather than a single normal P wave. The atrial rate is typically around 300 beats per minute, so many flutter waves occur between each QRS complex. This produces a distinctive sawtooth pattern on the ECG, especially visible in leads II and III. The ventricular response is governed by AV conduction and can be 2:1, 3:1, or another ratio, so you often see a regular but slower QRS rhythm with these repeated flutter waves between them. The QRS complexes themselves are usually narrow unless there’s another conduction problem. Normal P waves would point to sinus rhythm. Absence of P waves points toward atrial fibrillation, where the atrial activity is irregular and not organized into flutter waves. Inverted P waves can occur with retrograde atrial activation or in certain leads, but the hallmark of atrial flutter is the sawtooth flutter waves between QRS complexes.

In atrial flutter, you have rapid, organized atrial activity that creates flutter waves rather than a single normal P wave. The atrial rate is typically around 300 beats per minute, so many flutter waves occur between each QRS complex. This produces a distinctive sawtooth pattern on the ECG, especially visible in leads II and III. The ventricular response is governed by AV conduction and can be 2:1, 3:1, or another ratio, so you often see a regular but slower QRS rhythm with these repeated flutter waves between them. The QRS complexes themselves are usually narrow unless there’s another conduction problem.

Normal P waves would point to sinus rhythm. Absence of P waves points toward atrial fibrillation, where the atrial activity is irregular and not organized into flutter waves. Inverted P waves can occur with retrograde atrial activation or in certain leads, but the hallmark of atrial flutter is the sawtooth flutter waves between QRS complexes.

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