PubMed Health⌕ Search
Home/Archive/PubMed

PubMed · 646091

[Data processing in the blood gas laboratory (author's transl)].

E Voigt·R Schorer
View original source ↗Export metadata ↓

Abstract

A computer-assisted system for the calculation of derived blood-gas and acid-base parameters, consisting of an analysator (AVL 937) desk calculator (HP 9825A) and external printer (HP 5150A) is described. For the calculation of the derived parameters corrections were made for patient temperature, plasma protein, reduced haemoglobin and CO2-carbamino haemoglobin. The time needed for calculating and feed back was shortened.

Explore related subjects

Blood Gas AnalysisBlood ProteinsBody TemperatureComputersHemoglobinsHumansEnglish AbstractJournal Article

Keep this discovery

Explore connections, maps & timelines

BibTeXRIS

E Voigt, R Schorer. 1978. [Data processing in the blood gas laboratory (author's transl)].. https://pubmed.ncbi.nlm.nih.gov/646091/

Cite the original work for its findings. Save a collection to share your selection of sources.

KEEP EXPLORING

Related citations

PubMed1979

[Scanning electron microscopic examination of intra-arterial PO2 electrodes (author's transl)].

Continuous blood gas measurement by means of indwelling intraarterial electrodes facilitates and contributes to considerably improve the monitoring of pulmonary gas exchange in intensive care and anaesthesiology. Knowledge of the behaviour of the electrode surface in the blood stream is necessary to assess the characteristics of the measuring and the possible risks or complications. Scanning electron microscopic examinations were performed in a commercial-type polarographic PO2 electrode after in vitro and in vivo application. 14 electrodes were examined after continuous intra-arterial measurements in patients with chronic obstructive pulmonary disease and in intensive care patients. Duration of intra-arterial measurements was 2-109 h. Already after a measuring period of 2 h in nearly all cases a protein film was discovered on the electrode surface. Microthrombotic deposits were seen in 2 cases, in one of these despite of treatment with heparin. The electrode membrane showed a network ofmicro-cracks, small bubbles and dents. The membrane changes were probably the result of the drying process during the electron microscopic preparation, because the membrane material (Hydron) is hydrophil and swells during the measurement. Yet it cannot be excluded that these changes occur, in part, during the measurements. From these and other studies we conclude that the intra-arterial application of this electrode has a low risk of thromboembolic complications. The deposits on the electrode surface and the membrane changes may probably affect the response time and possibly also the stability of the electrode.

Blood Gas Analysis↗
PubMed1979

[Patient monitoring].

The main problems of monitoring patients on prolonged artificial respiration are discussed. These are: uninterrupted technical control of the respirator and of its clinical effects; continuous observation of the functioning of tubes, vaporizers and nebulizers; adequate tracheobronchial clearance and breathing therapy is absolutely compulsory. Intensive care units are classified into three categories according to their monitoring and surveillance capacities. The minimum, which corresponds to category I, should be performed by every intensive care unit. Category III includes additional computerized intensive care. The most important parameter for monitoring pulmonary function is blood gas analysis, which has been improved by the introduction of continuous arterial pO2 registration. Haemodynamic control serves for detection of arrhythmias and changes in pump function. The determination of pulmonary shunt flow (Qs/Qt) and of the ratio of dead space to tidal volume (VD/VT) impart information on the overall function of both systems (category II). A nomogram to simplify the calculation of pulmonary shunt is proposed which aggregates the factors contributing most to pulmonary shunt in acute respiratory failure. Its results deviate less than 1% from the calculated values if PCO2 ranges between 32 and 52 mm Hg and the error does not exceed 1.5 per cent with a PCO2 up to 82 mm Hg, unless it is combined with a very low Hb and high mixed venous saturation.

Blood Gas Analysis↗