AV Conduction: Difference between revisions
→Second degree AV block type I (Wenckebach)
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* QRS complexes cluster (e.g. a 5:4 block or 4:3 block) | * QRS complexes cluster (e.g. a 5:4 block or 4:3 block) | ||
* The PQ interval prolongs every consecutive beat | * The PQ interval prolongs every consecutive beat | ||
* The PQ interval that follows upon a dropped beat is the | * The PQ interval that follows upon a dropped beat is the shortest. | ||
* The RR interval shortens (!) every consecutive beat. | * The RR interval shortens (!) every consecutive beat. | ||
* The amount of block decreases during exercise (e.g. a 4:3 block improves into a 6:5 block) | * The amount of block decreases during exercise (e.g. a 4:3 block improves into a 6:5 block) | ||