A persistent patent ductus arteriosus (PDA) may show a range of configurations which were classified by Krichenko et al.
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Description
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Type
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conical (prominent aortic ampulla and constriction near pulmonary artery)
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A
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window (wide and short)
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B
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tubular, without constrictions
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C
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complex, with constrictions and dilations
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D
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elongated conical shape, with constriction near pulmonary artery
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E
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The configuration of the PDA impacts how to close it.
