[A new technic for detaction of left-right shunt by the nitrous oxide method].
D006330:Heart Defects, Congenital / Q000175:diagnosis*; D006801:Humans; D009609:Nitrous Oxide / Q000494:pharmacology*
D009609:Nitrous Oxide
HEART DEFECTS, CONGENITAL/diagnosis; NITROUS OXIDE/pharmacology