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Electrical velocimetry for measuring cardiac output in children with congenital heart disease
- Source :
- British Journal of Anaesthesia. 100:88-94
- Publication Year :
- 2008
- Publisher :
- Elsevier BV, 2008.
-
Abstract
- Background. The purpose of this study was to evaluate the agreement of cardiac output measurements obtained by electrical velocimetry (COEV) and those that derived from the direct Fick-oxygen principle (COF) in infants and children with congenital heart defects. Methods. Simultaneous measurements of COEV and COF were compared in 32 paediatric patients, aged 11 days to 17.8 yr, undergoing diagnostic right and left heart catheterization. For non-invasive measurements of cardiac output by electrical velocimetry, which is a variation of impedance cardiography, standard surface electrodes were applied to the left side of the neck and the left side of the thorax at the level of the xiphoid process. Cardiac output determined using direct Fick-oxygen principle was calculated by direct measurement of oxygen consumption (VO2) and invasive determination of the arterio-venous oxygen content difference. Results. An excellent correlation (r=0.97) was found between COEV and COF (P,0.001). The slope of the regression equation [0.96 (SD 0.04)] was not significantly different from the line of identity. The bias between the two methods (COEV‐COF) was 0.01 litre min 21 and the limits of agreement, defined as the bias (2 SD), were 20.47 and +0.45 litre min 21 . Conclusions. COEV demonstrates acceptable agreement with data derived from COF in infants and children with congenital heart disease. The new technique is simple, completely non-invasive, and provides beat-to-beat estimation of CO. Br J Anaesth 2008; 100 :8 8‐94
- Subjects :
- Heart Defects, Congenital
Male
Thorax
Cardiac Catheterization
Cardiac output
medicine.medical_specialty
Adolescent
Heart disease
Electrical cardiometry
medicine.medical_treatment
Cardiography, Impedance
Electrocardiography
Oxygen Consumption
Internal medicine
medicine
Humans
Cardiac Output
Child
Monitoring, Physiologic
Cardiac catheterization
medicine.diagnostic_test
business.industry
Infant, Newborn
Infant
Reproducibility of Results
Velocimetry
medicine.disease
Oxygen
Impedance cardiography
Anesthesiology and Pain Medicine
Child, Preschool
Anesthesia
Cardiology
Female
Rheology
business
Subjects
Details
- ISSN :
- 00070912
- Volume :
- 100
- Database :
- OpenAIRE
- Journal :
- British Journal of Anaesthesia
- Accession number :
- edsair.doi.dedup.....b68543f8815cb1fc7ee6d00a2a9af654