新生儿毛细血管血与动脉血气测量的比较。
Comparison of capillary and arterial blood gas measurements in neonates.
作者信息
McLain B I, Evans J, Dear P R
机构信息
Department of Paediatrics and Child Health, University of Leeds, St James's University Hospital.
出版信息
Arch Dis Child. 1988 Jul;63(7 Spec No):743-7. doi: 10.1136/adc.63.7_spec_no.743.
One hundred and fifty eight paired arterial and capillary blood samples were obtained from 41 sick preterm infants in their first week of life and the pH, and PCO2, and PO2 concentrations were measured. Half of the capillary samples were obtained from unwarmed heels and half from heels warmed to 40 degrees C. A potentially significant discrepancy (arbitrarily defined as 0.05 units for pH. 1 kPa for PCO2, and 3 kPa for PO2) was found in 19 (24%) of cases for pH, in 9 (11%) for PCO2 and in 21 (26%) for PO2. Warming the heel produced no significant improvement in results. We conclude that capillary blood provides satisfactory measurements of pH and PCO2 for all but the most critical purposes, but that the usefulness of capillary PO2 estimations is limited to the exclusion of hypoxia.
从41例患病早产儿出生后第一周内获取了158对动脉血和毛细血管血样本，并测量了pH值、二氧化碳分压（PCO2）和氧分压（PO2）浓度。一半的毛细血管血样本采自未加温的足跟，另一半采自加温至40摄氏度的足跟。结果发现，19例（24%）的pH值、9例（11%）的PCO2以及21例（26%）的PO2存在潜在显著差异（pH值任意定义为0.05个单位，PCO2为1 kPa，PO2为3 kPa）。足跟加温并未使结果得到显著改善。我们得出结论，除了最关键的用途外，毛细血管血能为pH值和PCO2提供令人满意的测量结果，但毛细血管PO2估计值的用途仅限于排除缺氧情况。
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