ICU: Monitor - Differential Cyanosis

Scenario 1:
6-hours old, term baby girl. 3.4 kg. Transferred from outside hospital for cyanosis noted at 2 hrs of age.
Oxygen saturation:
Preductal 100%
Postductal 81%

Scenaio 2:

17 day old baby, born at home

Admitted via ER for cyanosis and respiratory distress.

Following is the monitor image:

"Reverse" Differential cyanosis is noted

Preductal saturation 87%

Postductal saturation 96%

What is the differential diagnosis?

No comments: