Gaz du sang arteriel: [aspects techniqueset interpretetation]

This study concerns the technical aspects and the interpretation methods of arterial blood gases. In the technical part, the PO2, PCO2 and pH electrodes o will be treated as well as the directs and indirects evaluation methods of arterial blood gases. In the interpretation part, the information will be dealt with analysis of partial pressure of oxygen [PaO2], the partial pressure of carbon dioxide [PaCO2], the pH and the bicarbonate concentration in arterial blood. The information concerns the level of hypoxemia, the state of ventilation that are evaluated by the analysis of PaO2 and PaCO2 respectively, and the disorders of acid-base balance that is evaluated by the analysis of pH, PaCO2 and bicarbonate