Evaluation of a pediatric central venous oximetry catheter in critically ill children

Abstract

Pediatric central venous oximetry catheters provide accurate trending of continuous Scvo2 within the physiologic range studied.

In-vitro evaluation of the PediaSat continuous central venous oxygenation monitoring system

“…However, the BlandAltman plots for both probes revealed high limits of agreement and demonstrated substantial overestimation of low SO 2 and underestimation at high SO 2 . In a clinical investigation of a PediaSat system in neonates and paediatric patients undergoing cardiac surgery, Ranucci et al 17 reported a mean bias close to zero and an accep- 12 were only close to 50%, which may explain the considerable disagreement with the presented findings.…”

“…In the past, several related systems have been investigated, and the most recent studies 8,[10][11][12][13]17 show similar variations in the SvO 2 range of interest. In a previous investigation, 11 we reported on a three-light, reference, wavelength-based oximetry catheter system demonstrating only a poor agreement between fibre-optically measured SO 2 and S CO-OX O 2 values.…”

“…Various devices have been evaluated in few clinical and experimental investigations, but the results remain controversial. [8][9][10][11][12] Recently, a new system for paediatric patients, the PediaSat system (Edwards Lifesciences, Irvine, California, USA), has become available, using central venous catheters with inbuilt fibre-optic transmission. The aim of this study was to validate its performance in an in-vitro bench-top model.…”

Nouvelles techniques de monitorage en réanimation pédiatrique — La ScvO2

“…Il y a une corrélation significative entre les valeurs de ScvO 2 obtenues en continu par cathéter à fibre optique et la mesure réalisée sur un gaz du sang [22]. Plusieurs études, dont celle de Spenceley et al, montraient chez des enfants en postopératoire de chirurgie cardiaque que les valeurs de ScvO 2 obtenues par le Pediasat™ (Edwards Lifesciences LLC, Irvine, CA, États-Unis) étaient comparables à celles obtenues par des prélèvements itératifs [23,24].…”

A Sisyphean Task

“…Such considerations probably played a role in the current study of continuous venous oximetry after pediatric cardiac surgery by Crowley et al 3 They and others 7,8 have evaluated the technology in patients and animal models previously, albeit with somewhat variable results concerning accuracy and validity, especially at extremes of physiology where the technology may not be as reliable. 9 Their current observational study used commercially available, percutaneously placed pediatric oximetric venous catheters positioned in the SVC to measure SCVO 2 continuously during and after major heart surgery in children without any residual postrepair shunt lesions.…”