Which of the following is a brady rhythm?

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Multiple Choice

Which of the following is a brady rhythm?

Bradycardia means a heart rate slower than normal, typically less than 60 beats per minute, and the rhythm is usually regular with the usual P waves before each QRS complex. A sinus brady rhythm specifically means the impulse still originates from the sinoatrial node, so the P waves are normal, the PR interval is normal, and the QRS complexes are narrow, just at a slower pace. Among the options, the one that fits a slow, regular rhythm with normal P waves before every QRS is sinus brady. The other rhythms represent faster rates or different patterns: junctional tachycardia is a rapid rhythm arising near the AV node and often without normal P waves; ventricular tachycardia is a fast, wide-complex rhythm from the ventricles; atrial fibrillation is irregularly irregular with no discrete P waves and often an irregular, variable rate. So the slow, regular sinus-pattern rhythm is the bradycardia.

Bradycardia means a heart rate slower than normal, typically less than 60 beats per minute, and the rhythm is usually regular with the usual P waves before each QRS complex. A sinus brady rhythm specifically means the impulse still originates from the sinoatrial node, so the P waves are normal, the PR interval is normal, and the QRS complexes are narrow, just at a slower pace.

Among the options, the one that fits a slow, regular rhythm with normal P waves before every QRS is sinus brady. The other rhythms represent faster rates or different patterns: junctional tachycardia is a rapid rhythm arising near the AV node and often without normal P waves; ventricular tachycardia is a fast, wide-complex rhythm from the ventricles; atrial fibrillation is irregularly irregular with no discrete P waves and often an irregular, variable rate. So the slow, regular sinus-pattern rhythm is the bradycardia.

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