Key result
AV conduction abnormalities can drive diastolic AV regurgitation when ventricular pressure transiently exceeds atrial pressure.
Why the study?
Diastolic atrioventricular regurgitation occurring during conduction abnormalities is an underrecognized phenomenon distinct from typical systolic regurgitation.
Highlights the phenomenon of diastolic atrioventricular regurgitation, which can affect the mitral and tricuspid valves in the setting of atrioventricular conduction abnormalities.
Answers are grounded in this paper and cite their sources.
May prompt recognition of diastolic regurgitation in conduction disease; leaves open its prevalence and clinical consequences.
Atrioventricular valve regurgitation is typically regarded as a systolic phenomenon. However, mitral regurgitation (MR) and tricuspid regurgitation (TR) may also occur during diastole when ventricular pressure transiently exceeds atrial pressure while the mitral valve (MV) and tricuspid valve (TV) leaflets remain incompletely closed. This entity—diastolic atrioventricular regurgitation—has been described most commonly involving the MV but may also affect the TV in the setting of atrioventricular conduction abnormalities.
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Holman et al. (2026) conducted a review in Diastolic atrioventricular regurgitation in conduction disease. Atrioventricular conduction abnormalities was evaluated. Diastolic atrioventricular regurgitation (mitral and tricuspid) may occur in the setting of atrioventricular conduction abnormalities when ventricular pressure transiently exceeds atrial pressure.
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