Junctional rhythms originate from which area of the heart?

Understand the Problem

The question is asking about the origin of junctional rhythms in the heart, specifically which area they originate from. Junctional rhythms typically arise when the normal pacemaker (the sinoatrial node) fails, and the atrioventricular (AV) junction takes over as the pacemaker.

More Information

Junctional rhythms are heart rhythms resulting from impulses that originate from the atrioventricular (AV) node or the bundle of His when the sinoatrial (SA) node isn't functioning properly.

Tips

Common mistakes include confusing junctional rhythms with atrial rhythms. Ensure you identify the correct origin of the impulses using ECG analysis.

Sources

• Junctional Rhythm - PubMed - pubmed.ncbi.nlm.nih.gov
• Junctional Rhythm: Background, Pathophysiology, Etiology - emedicine.medscape.com
• Junctional Rhythms ECG Review | Learn the Heart - Healio - healio.com