Anthropometric and physiological measurements in healthy children

T H Rainer1, G N Cattermole, C A Graham

  • 1Accident and Emergency Medicine Academic Unit, The Chinese University of Hong Kong; Trauma and Emergency Centre, Prince of Wales Hospital.

Insights

Normal ranges for cardiac output monitoring in children aged 1-12 were established. Stroke volume index and cardiac index increase in early childhood, then plateau or decline slightly.

Area of Science:

  • Pediatric cardiology
  • Medical device technology
  • Biomedical engineering

Background:

  • Establishing normal cardiovascular reference ranges is crucial for pediatric patient assessment.
  • Ultrasonic cardiac output monitoring (USCOM) offers a non-invasive method for evaluating hemodynamic status.
  • Limited data exists on USCOM-derived indices in healthy Chinese children.

Purpose of the Study:

  • To derive normal ranges for USCOM-derived cardiovascular indices in Chinese children.
  • To develop and validate a formula for stroke volume calculation in this population.
  • To describe age-related trends in cardiac output and stroke volume indices.

Main Methods:

  • Cross-sectional study involving healthy Chinese children aged 1 to 12 years in Hong Kong.
  • Utilized an ultrasonic cardiac output monitor to derive cardiovascular indices.
  • Developed a simplified formula for stroke volume estimation.

Main Results:

  • Normal reference ranges for USCOM-derived cardiovascular indices were established for the study population.
  • The developed stroke volume formula exhibited an error margin of 8% to 40%.
  • Stroke volume index and cardiac index showed a general increase from ages 1 to 5 years, followed by a plateau or slight decrease.

Conclusions:

  • This study provides valuable normative data for USCOM use in pediatric cardiology.
  • The developed stroke volume formula requires further validation due to significant error margins.
  • Age-specific patterns in cardiac output and stroke volume indices were observed in Chinese children.

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