Modeling of pediatric aortic input impedance

Modeling of pediatric aortic input impedance

Input impedance was calculated from flow and pressure waveforms recorded from the ascending aortas of six pediatric patients ranging in age from 1 to 4 years and weight from 7.2 to 6.4 kg. Impedance curve fits were compared for two four-element lumped parameter models and the three-element modified...

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Veröffentlicht in:Annals of biomedical engineering 2000-01, Vol.28 (SUPPL. 1), p.S-63
Hauptverfasser: Sharp, MKeith, Pantalos, George M, Minich, LuAnn, Tani, Lloyd Y, McGough, Edwin C
Format: Artikel
Sprache:eng
Schlagworte:
Bioelectric phenomena
Curve fitting
Electric conductivity
Electric impedance
Hemodynamics
Mathematical models
Patient monitoring
Pediatrics
Pressure
Resistors
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Zusammenfassung:Input impedance was calculated from flow and pressure waveforms recorded from the ascending aortas of six pediatric patients ranging in age from 1 to 4 years and weight from 7.2 to 6.4 kg. Impedance curve fits were compared for two four-element lumped parameter models and the three-element modified Windkessel model. The results suggested that Rp developed more rapidly with patient weight than did Rc. C increased with increasing patient weight and was 3-16 times lower than adult values.
ISSN:0090-6964