Correlation of simultaneously obtained capillary, venous, and arterial blood gases of patients in a paediatric intensive care unit.

Author(s): Yildizdas, Yapicioglu, Yilmaz HL, Sertdemir Y

Publication: Arch Dis Child, 2004, Vol. 89, Page 176-80

PubMed ID: 14736638 PubMed Review Paper? No

Purpose of Paper

Conclusion of Paper

Studies

1. Study Purpose

   The purpose of this study was to determine the effects of patient condition and sampling location on measurement of blood gases in hospitalized pediatric patients. When available, venous and arterial blood were collected by catheter. Otherwise blood was collected by puncture.

   Summary of Findings:

   pH, pCO2, base excess and bicarbonate were highly correlated in arterial, venous and capillary blood (all r>0.823; p<0.001) and were unaffected by patient blood pressure or temperature. In normotensive and hypertensive patients, pO2 measurements were moderately correlated between arterial and venous blood (r=0.366; p=0.005), capillary and venous blood (r=0.541; p<0.001), and arterial and capillary blood (r=0.674; p<0.001). However, in patients with hypotension, there was no correlation between arterial and venous or capillary pO2 measurements, and the correlation between pO2 in venous and capillary blood was lower (r=0.49, p<0.001).

   Biospecimens

   • Bodily Fluid - Blood

   Preservative Types

   • None (Fresh)

   Diagnoses:

   • Not specified
   • Other diagnoses

   Platform:

   Analyte	Technology Platform
   Gas	Clinical chemistry/auto analyzer
   Small molecule	pH

   Pre-analytical Factors:

   Classification	Pre-analytical Factor	Value(s)
   Preaquisition	Blood pressure	Hypotensive Normotensive Hypertensive
   Preaquisition	Diagnosis/ patient condition	Hypothermia Normothermia Hyperthermia
   Biospecimen Acquisition	Anatomical location of blood draw	Artery Capillary Vein

   View more