In atrial fibrillation A. The electrocardiogram shows no evidence of

1.	In atrial fibrillation A. The electrocardiogram shows no evidence of atrial activity. B. Ventricular rate is lower than atrial rate. C. Respiratory sinus arrhythmia can usually be seen. D. The ventricular rate is irregular. E. The QRS complexes have an abnormal configuration.
Answer» A. False Small rapid waves indicate the atrial fibrillation. B. True Atrial rate is higher than ventricular rate as some impulses are filtered out by the atrioventricular node. C. False Sinus arrhythmia indicates normal sinus rhythm. D. True Due to the irregularity of the impulses passing through the AV node. E. False QRS complexes are normal since the pattern of ventricular depolarization is normal.

In atrial fibrillation A. The electrocardiogram shows no evidence of atrial activity. B. Ventricular rate is lower than atrial rate. C. Respiratory sinus arrhythmia can usually be seen. D. The ventricular rate is irregular. E. The QRS complexes have an abnormal configuration.

Answer»

A. False Small rapid waves indicate the atrial fibrillation.

B. True Atrial rate is higher than ventricular rate as some impulses are filtered out by the atrioventricular node.

C. False Sinus arrhythmia indicates normal sinus rhythm.

D. True Due to the irregularity of the impulses passing through the AV node.

E. False QRS complexes are normal since the pattern of ventricular depolarization is normal.

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In atrial fibrillation A. The electrocardiogram shows no evidence of atrial activity. B. Ventricular rate is lower than atrial rate. C. Respiratory sinus arrhythmia can usually be seen. D. The ventricular rate is irregular. E. The QRS complexes have an abnormal configuration.

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