Key result
Mixed TAPVR is linked to higher mortality and increased risk of postoperative pulmonary venous obstruction.
Why the study?
Mixed TAPVR variants present anatomic complexity and are an independent risk factor for postoperative pulmonary venous obstruction with higher mortality than isolated subtypes.
An extra-cardiac approach avoiding posterior dissection is described for repairing vertical vein stenosis in complex mixed TAPVR variants, which carry a high risk of postoperative pulmonary venous obstruction.
May warrant exhaustive preoperative vein mapping in mixed TAPVR; leaves open whether targeted approaches improve outcomes.
Although simple forms of total anomalous pulmonary venous return (TAPVR) can be characterized as less complicated repairs with good outcomes, mixed TAPVR variants present with anatomic complexity and require different approaches. In these mixed TAPVR variants, a dominant, unobstructed venous confluence establishes a path of least resistance, which can hemodynamically mask critical pathology in solitary, remote veins during initial hemodynamic assessment. Consequently, mixed TAPVR is an independent risk factor for postoperative pulmonary venous obstruction (PVO), with mortality rates significantly higher than isolated subtypes.
No takes yet. Share an insight, caveat, or question.
Johnstone et al. (2026) studied Total anomalous pulmonary venous return (TAPVR). Extra-cardiac approach avoiding posterior dissection was evaluated. Mixed total anomalous pulmonary venous return is an independent risk factor for postoperative pulmonary venous obstruction and is associated with significantly higher mortality than isolated subtypes.
Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context: