Key result
Angiography documents simultaneous unprecipitated spasm across multiple MAPCAs in pulmonary atresia with VSD.
Why the study?
Although spasm of major aortopulmonary collateral arteries in pulmonary atresia with ventricular septal defect is well-described, few published images of this phenomenon exist.
Provides rare angiographic documentation of simultaneous unprecipitated spasm in multiple major aortopulmonary collateral arteries during cardiac catheterization in pulmonary atresia with ventricular septal defect.
Answers are grounded in this paper and cite their sources.
Alerts clinicians to possible unprovoked multi-MAPCA spasm during catheterization in pulmonary atresia with VSD; leaves open its prevalence and hemodynamic relevance.
Although well-described, there are few published images of spasm of major aortopulmonary collateral arteries in pulmonary atresia with ventricular septal defect. We offer here angiographic evidence of unprecipitated spasm affecting multiple vessels simultaneously.
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Ho et al. (2026) studied this question. Cardiac catheterisation documented angiographic evidence of simultaneous, unprecipitated spasm affecting multiple major aortopulmonary collateral arteries in pulmonary atresia with VSD.
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