Wat is de AV-knoop?
De AV-knoop (atrioventriculaire knoop) houdt de prikkels van het hart even vast en verspreidt die prikkels daarna over de hartkamers. Bij een AV-blok houdt de AV-knoop de elektrische prikkel langer vast dan normaal. Het hartritme wordt daardoor vertraagd.
Waar ligt de AV-knoop?
De AV (atrioventriculaire) knoop ligt op de overgang tussen boezem en kamer. Deze knoop zorgt ervoor dat de prikkel zich via de bundel van His ook door het netwerk van beide kamerwanden verspreidt.
Tussen de boezems en de kamers zit een tweede centrum: de AV-knoop. Deze houdt de elektrische prikkel heel even vast en verspreidt die dan bliksemsnel over de kamers. Als de elektrische prikkel verkeerd, te langzaam of te snel door het hart loopt, ontstaat een ritmestoornis.
What does RBBB mean in medical terms?
INTRODUCTION The Right Bundle Branch Block (RBBB) is a block in the right bundle branch of the electrical conduction system of the heart [1]. It is generally considered to be a benign finding that does not imply increased risk in healthy individuals without structural cardiac disorders.
What does right bundle branch block (RBBB) mean?
Right bundle branch block does not alter the electrical axis of the heart. Axis deviation indicates that there is concomitant fascicular block. Left axis deviation suggests concomitant left anterior fascicular block. Right axis deviation suggests concomitant left posterior fascicular block. Clinical significance of right bundle branch block (RBBB)
What is RBBB and LBBB in ECG?
Figure 2 illustrates a normal ECG, a right bundle branch block (RBBB) and a left bundle branch block (LBBB). Figure 1. The electrical conduction system of the heart, with emphasis on the ventricles. The sinoatrial (SA) node and atrioventricular (AV) node are located in the atria (they are not part of the ventricular conduction system).
What does a new RBBB mean for OMI?
There is increasing literature suggesting that in the context of chest pain, a new RBBB is highly concerning for OMI and a potential indication for immediate reperfusion therapy. The right bundle branch is supplied by LAD perforators in most patient populations and thus occlusion of this branch may manifest as a new RBBB +/- LAFB.