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.
Keywords: Child; patent foramen ovale; platypnea–orthodeoxia syndrome.