Key result
Biventricular connections show a smaller antero-posterior diameter to annulus width ratio vs double inlet ventricle.
Why the study?
The precise anatomic arrangement of the annular attachment of a common atrioventricular valve in hearts with isomeric atrial appendages was unclear.
Comparison
Annular attachment arrangements in hearts with biventricular connections versus double inlet ventricle
Design
Observational anatomical study
Authors
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Morphological distinctions may inform annuloplasty planning in isomerism; leaves open prospective validation of surgical impact.
Observational (n=112)
Absolute Event Rate: 0.77% vs 0.89%
p-value: p=< 0.001
The annular attachment of a common AV valve in hearts with isomeric atrial appendages is typically nonplanar and undulating, which has implications for surgical valvar annuloplasty.
Uemura et al. (1996) conducted an observational in Visceral heterotaxy with isomeric atrial appendages (n=112). Biventricular connections vs. Double inlet ventricle was evaluated on Ratio of the antero-posterior diameter to the width of the annulus (p=< 0.001). Hearts with biventricular connections had a smaller ratio of antero-posterior diameter to annulus width compared to those with double inlet ventricle (0.77 vs 0.89, P<0.001).
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