Automatic blood-gas analysers.

Assessment of recently developed blood gas analysers: a multicentre evaluation

Providing guidelines for testing expected inaccuracy and imprecision is still a matter under debate. The Expert Panel of the French Society of Clinical Chemistry has developed a protocol, which was based on a comparative multi-centre evaluation of four instruments: the Ciba-Corning 278, the Instrumentation Laboratory 1306, the Nova SP 5 and the ABL 330. The purpose was to evaluate the analytica...

Carry-over in automatic analysers

Instrumental variability of respiratory blood gases among different blood gas analysers in different laboratories.

The aim of this study was to test the hypothesis that differences in oxygen tension (PO2) and carbon dioxide tension (PCO2) values from measurements performed on different blood gas analysers in different laboratories are clinically insignificant. Samples of fresh whole human tonometered blood (PO2 8.1 kPa (60.8 mmHg); PCO2 5.3 kPa (39.9 mmHg)) were placed in airtight glass syringes and transpo...

Selectivity and random-access in automatic analysers

Progress in automation in clinical chemistry hasfeatured in recent years a change from rigid to very flexible instruments. The latest instruments are able to perform on each sample only those tests requested, and often do so in a random sequence. The technological aspects of this progress in instrument design are described in this paper (these include computerization ofanalytical steps, multipl...

Thermostatic regulation of blood samples in blood gas analysers: results and improved inethod applied to 11 different models

Thermostatic regulation of blood samples in blood gas analysers: results and improv ed inethod a ppli ed to 11 different models