Platypnea-orthodeoxia syndrome in a child: relief of symptoms after transcatheter closure of patent foramen ovale.

Platypnea-orthodeoxia syndrome is a rare clinical entity characterised by positional dyspnoea and arterial desaturation while in the upright position, the symptoms generally occurring in adults. We describe a 12-year-old girl diagnosed with platypnea-orthodeoxia syndrome associated with patent foramen ovale. The symptoms resolved following percutaneous patent foramen ovale closure.