Key result
A non-scar related reentrant tachycardia with a cycle around an uncorrected atrial septal defect was observed, likely due to right atrial dilatation and hemodynamic alterations.
Case Report (n=1)
An uncorrected atrial septal defect can serve as a non-scar related substrate for atypical right atrial septal flutter due to right atrial dilatation and hemodynamic alterations.
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Uncorrected ASD may underlie atypical RA flutter; extends known substrates but remains hypothesis-generating pending larger studies.
This case report describes an atypical right atrial septal flutter in a patient with a non-corrected atrial septal defect. The unique feature of this case report is that reentrant tachycardia with a cycle around the atrial septal defect was non-scar related. The slow conduction around this atrial septal defect was probably formed by right atrial dilatation and intra-cardiac haemodynamic alterations.
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Mikhaylov et al. (2009) conducted a case report in Atypical right atrial septal flutter with non-corrected atrial septal defect (n=1). Non-corrected atrial septal defect was evaluated. A non-scar related reentrant tachycardia with a cycle around an uncorrected atrial septal defect was observed, likely due to right atrial dilatation and hemodynamic alterations.
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