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Wirral University Hospital NHS Foundation Trust

Blood gas

This may be taken from the heel prick or direct from an artery (blood vessel which carries oxygen). The blood gas tells us baby's respiratory condition. Commonly in small early babies a line is put into the arterial blood vessel in baby's umbilical cord (tummy button) called an umbilical arterial catheter. Baby's blood pressure can be monitored via this and blood samples taken without disturbing baby.