Point-of-care testing moves the process of blood gas analysis from the laboratory to the bedside. Hand-held portable analyzers are now available to measure blood gases and pH. These devices typically use a disposable cartridge that contains calibration solution, a sample handling system, a waste chamber and miniaturized sensors. In comparison with traditional electrodes, these sensors are less sensitive to drift and require less frequent calibration. The role of point-of-care blood gas analysis is unclear. The quality and cost effectiveness of this testing remains to be determined.
Although some intra-arterial blood gas systems use a Clark polarographic electrode to measure PO2, most intra-arterial blood gas monitoring systems use an optode to measure PO2, PCO2 and pH. The optode consists of a miniaturized probe containing a fluorescent dye (Figure 2). Take advantage of this chance to find cipro antibiotic quality and cheap, save quite some money.