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Circulating blood volumes: a review of measurement techniques and a meta-analysis in children

Alyssa A Riley1, Yoko Arakawa, Sarah Worley

  • 1Department of Pediatrics, Lerner Research Institute, Cleveland Clinic, Cleveland, Ohio 44195, USA.

ASAIO Journal (American Society for Artificial Internal Organs : 1992)
|March 26, 2010
PubMed

Insights

Accurate measurement of circulating blood volume (CBV) in children is crucial. This meta-analysis synthesized existing data, finding current methods have limitations, and confirmed typical CBV values in healthy children.

Area of Science:

  • Pediatrics
  • Physiology
  • Medical Diagnostics

Background:

  • Accurate determination of circulating blood volume (CBV) is vital for pediatric clinical applications.
  • Existing CBV measurement techniques often involve invasive procedures, foreign substances, or uncertainties in distribution and clearance.
  • There is a need for reliable and standardized methods for assessing pediatric CBV.

Purpose of the Study:

  • To review current methods for measuring circulating blood volume in children.
  • To perform a meta-analysis of CBV values from existing small-scale studies in healthy children.
  • To establish pooled estimates of normal CBV ranges across different pediatric age groups.

Main Methods:

  • Comprehensive literature review of CBV measurement techniques.
  • Meta-analysis of CBV data from published studies on normal, healthy children.
  • Stratification by age groups and statistical comparison of mean values with standard deviations.

Main Results:

  • Identified limitations in current CBV measurement techniques, including repetitive blood sampling and substance distribution uncertainties.
  • Pooled estimate of mean blood volume calculated with a 95% confidence interval.
  • Mean CBV values obtained showed agreement with generally accepted normal values for healthy children.

Conclusions:

  • Current methods for determining pediatric circulating blood volume have significant drawbacks.
  • The meta-analysis provides a reliable estimate of normal CBV in children based on existing data.
  • Further research is needed to develop a gold standard for CBV measurement in pediatric populations.

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