ABSTRACT
Examination The baby is not dysmorphic. His temperature is 36.6C and his central capillary refill time is 2 s. His lips, tongue and extremities are cyanosed. He is crying normally and has no signs of increased respiratory effort. Heart rate is 160 beats/min, femoral pulses are palpable, heart sounds are normal and no murmur is audible. Oxygen saturation is 70 per cent in air and does not rise with facial oxygen, which has been administered by the midwife. There is no hepatosplenomegaly.
