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Related Experiment Videos

[The indirect calorimeter, "do it yourself"].

K Bachour1, A Neidhardt, Y Costes

  • 1Département d'anesthésie-réanimation-SAMU 25-CHU Besançon.

Agressologie: Revue Internationale De Physio-Biologie Et De Pharmacologie Appliquees Aux Effets De L'Agression
|January 1, 1990
PubMed
Summary
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A new metabolic calculator using common transducers accurately measures respiratory gases and volumes. This device reliably estimates substrate utilization and energy expenditure in patients, validated against a leading expenditure monitor.

Area of Science:

  • Clinical Engineering
  • Medical Device Development
  • Metabolic Monitoring

Context:

  • Accurate metabolic monitoring is crucial for patient care and research.
  • Existing metabolic expenditure monitors can be expensive and complex.
  • There is a need for accessible and reliable metabolic calculation tools.

Purpose:

  • To develop and validate an original metabolic calculator using readily available transducers.
  • To assess the accuracy of the developed calculator against a commercial expenditure monitor (Deltatrac).
  • To evaluate the calculator's performance in patients with various diseases.

Summary:

  • An innovative metabolic calculator was created using a "microgaz Roche Kontron 7640" for gas analysis (PiO2-PeO2, PeCO2) and a pneumotachograph for expiratory minute volume.

Related Experiment Videos

  • The system, integrated with a Sharp PC 1261 microcomputer, calculates substrate consumption (lipids, glucids) and energy expenditure, even with high fractional inspired oxygen (FiO2).
  • Validation against the Deltatrac monitor in 150 patient measurements showed high reliability for VO2 (r=0.98), VCO2 (r=0.94), energy expenditure (r=0.97), and respiratory quotient (RQ) (r=0.77).

    • Impact:

    • Provides a cost-effective and reliable method for metabolic monitoring in clinical settings.
    • Enables accurate assessment of substrate utilization and energy expenditure, aiding in treatment optimization.
    • Demonstrates the feasibility of using common transducers for sophisticated physiological measurements.