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A member asked:
Why is transposition of the great vessels fatal?
A doctor has provided 1 answer
2 parallel circ.: It results in 2 parallel circuits.Obviously if baby barely alive some mixing is present. The only crossover connections are the patent ductus arteriosus and the patent foramen ovale or asd. If a vsd present that favors mixing. If the PDA closes and the pfo not big enough, death may ensue unless an emergency rashkind procedure(balloon atrial septostomy) done to allow arteriovenous mixing &oxygenati.
Answered 1/12/2015
5.7k views
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