Key result
Atrial contraction occurs against closed AV valves during AVN-SVT and against totally or partially closed AV valves during AV-SVT, leading to similar atrial pressure and cardiac index changes.
Why the study?
Does the timing of atrial contraction relative to AV valve closure explain the increase in atrial pressure during AVN-SVT and AV-SVT?
Population
20 cases of supraventricular tachycardia (11 AVN-SVTs and 9 AV-SVTs)
Comparison
Integrated Doppler electro-physiological… vs AVN-SVT compared to AV-SVT
Design
Cross-sectional
Authors
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Clarifies atrial flow patterns distinguishing AV-SVT from AVN-SVT; hypothesis-generating for noninvasive diagnosis, prospective validation required.
Observational (n=20)
Does the timing of atrial contraction relative to AV valve closure explain the increase in atrial pressure during AVN-SVT and AV-SVT?
Atrial contraction occurs against totally or partially closed AV valves in both AVN-SVT and AV-SVT, explaining the similar hemodynamic changes observed in both arrhythmias.
Mele et al. (2000) conducted an observational in Supraventricular tachycardia (AVN-SVT and AV-SVT) (n=20). Atrioventricular nodal reentrant tachycardia (AVN-SVT) vs. Atrioventricular reentrant tachycardia (AV-SVT) was evaluated on Timing of atrial contraction relative to AV valve closure and hemodynamic changes. Atrial contraction occurs against closed AV valves during AVN-SVT and against totally or partially closed AV valves during AV-SVT, leading to similar atrial pressure and cardiac index changes.
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