title: Measurement of cardiac output in children by bioreactance.
abstract: The objective of this study was to evaluate a new bioreactance method for noninvasive cardiac output (CO) measurement (NICOM) in children. Ten patients between 1 and 144 months of age and with no hemodynamic disturbances were studied. Using bioreactance, heart rate (HR), mean arterial pressure (MAP), and cardiac index (CI) measurements were made every 6-8 h. CI was 2.4 ± 1.03 l/min/1.73 m(2) (range 1-4.9 l/min/1.73 m(2)); There were significant correlations between CI and age (r = 0.50, P = 0.003), weight (r = 0.66, P < 0.001), and MAP (r = 0.369, P = 0.037). Significant differences in CI (P < 0.001) were detected between children weighing <10 kg (1.9 ± 0.73 l/min/1.73 m(2); range 1-3.2), 10-20 kg (2.07 ± 0.7 l/min/1.73 m(2); range 1-3.6), and >20 kg (3.7 ± 0.8 l/min/1.73 m(2); range 2.4-4.9). We conclude that the CI measured by bioreactance in children varies with the age and weight of the patients and is lower than the normal range in a large percentage of measurements. These data suggest that this method is not useful for evaluating CI in small children.
authors.affiliation: Pediatric Intensive Care Department, Hospital General Universitario Gregorio Marañón, 28009, Madrid, Spain.
authors.forename: Yolanda
authors.initials: Y
authors.lastname: Ballestero
authors.forename: Jesús
authors.initials: J
authors.lastname: López-Herce
authors.forename: Javier
authors.initials: J
authors.lastname: Urbano
authors.forename: Maria José
authors.initials: MJ
authors.lastname: Solana
authors.forename: Marta
authors.initials: M
authors.lastname: Botrán
authors.forename: Jose M
authors.initials: JM
authors.lastname: Bellón
authors.forename: Angel
authors.initials: A
authors.lastname: Carrillo
mesh_terms: D006328:Cardiac Catheterization; D002302:Cardiac Output / Q000502:physiology*; D002307:Cardiography, Impedance / Q000295:instrumentation*; D002318:Cardiovascular Diseases / Q000175:diagnosis* / Q000503:physiopathology; D002675:Child, Preschool; D004867:Equipment Design; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D008297:Male; D011446:Prospective Studies; D015203:Reproducibility of Results; D013815:Thermodilution