A 7-year-old girl presented with cyanosis for the past 4 years. Physical examination revealed digital clubbing and cyanosis, and a rest arterial oxygen saturation level of 82%.
A 7-year-old girl presented with cyanosis for the past 4 years. Physical examination revealed digital clubbing and cyanosis, and a rest arterial oxygen saturation level of 82%.
A 7-year-old girl presented with...