Capillary blood gases are accurate and a good substitute for radial 'stab' arterial puncture for most babies, avoiding many of the complications of repeated arterial puncture.
When indwelling arterial catheters are not feasible or not indicated because of infrequent sampling, heelstick capillary blood gases should be the first-line sampling method for acid-base analysis.
Comparison of simultaneously obtained arterial and capillary blood gases in pediatric intensive care unit patients.
Arterialised capillary blood gases
from acid-base studies in normal individuals from 29 days to 24 years of age.
In patients with chronic lung disease or mild-to-moderate acute cardio-respiratory problems, capillary blood gases
are often utilized.
The new edition now recommends prewarming puncture sites for all tests to be collected, not just capillary blood gases
of arterialized capillary blood gases evaluated 712 normal individuals between the ages of 1 month and 24 years.
Dung SH, Liu HM, Song GW, Rung ZP, We YR Arterialized capillary blood gases and acid-base studies in normal individuals from 29 days to 24 years of age.