title: Quantification of left-to-right shunts using a PO2-electrode cardiac catheter.
abstract: A rapid, simple and low-cost method is presented for intracardiac left-to-right shunt quantification in children with congenital heart disease. The percentage of shunt is calculated from data obtained by continuous PO2 measurement during oxygen inhalation, using a nondisposable intravascular PO2-electrode cardiac catheter. These values are compared with those obtained by the dye-dilution method (correlation coefficient r = 0.89) and the Fick method (correlation coefficient r = 0.98). The PO2 measurement proved reliable for small, medium, and large sized shunts.
mesh_terms: D000293:Adolescent; D006328:Cardiac Catheterization; D002648:Child; D002675:Child, Preschool; D004395:Dye Dilution Technique; D004566:Electrodes; D006343:Heart Septal Defects / Q000175:diagnosis* / Q000503:physiopathology; D006801:Humans; D007223:Infant; D008722:Methods; D010100:Oxygen; D010313:Partial Pressure
chemical_list: D010100:Oxygen