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PubMed1982

[Simultaneous monitoring of skin, sublingual, esophageal and rectal temperature of intubated patients in an air conditioned operating room. A comparison of methods].

The body temperature of 36 patients of ages 20-83 years, who were undergoing abdominal and extra-abdominal surgery, was measured oesophageally, sublingually, rectally and on the skin during a period of 2 h. The question behind this was: how far can the changes in deep body temperature (represented by the oesophageal temperature) be assessed by methods other than those applied oesophageally. The body temperature sank statistically distinctly, continually and, depending on the chosen method of measuring, by an average of 1.12 degrees C (oesophageal and rectal), 0.99 degrees C (sublingual) and 0.78 degrees C (skin) respectively. The sublingual temperature proved to be the best assessor of deep body temperature. With its help, 91.6% of the variance of oesophageal temperature in the mean was explainable.

Adult↗
PubMedDate not supplied

[Choice of operating conditions for gaseous formaldehyde sterilization].

Conditions for formaldehyde sterilization of plastic medical articles were investigated and technological parameters of this sterilization method were developed. This work was completed by the creation of a new 100 1 chamber for the treatment of plastic medical articles.

Formaldehyde↗
PubMedDate not supplied

Choice of operating conditions to minimize sperm subpopulation sampling bias in the assessment of boar semen by computer-assisted semen analysis.

The performance of a computer-assisted semen analysis system was evaluated for use with washed boar spermatozoa. Accuracy was tested using a computer graphics-generated series of spots moving along horizontal, vertical, and diagonal paths, with both straight and sinusoidal trajectories. Observed and expected values agreed to better than +/- 5%, and there was exact agreement in many cases. Reproducibility was tested by making 10 measurements of a single prerecorded sequence of boar spermatozoa. Coefficients of variation were < 3% for all sperm motion parameters tested. Setup conditions affecting the sample statistics of sperm populations were examined. Search radius (10 settings) and minimum track point (10 settings) were varied factorially to evaluate their biasing effects upon population sampling and accuracy. Low search radius (< 12 microns) or high minimum track point values (> 26 frames) precluded measurements of rapidly moving cells and thus led to selection of slow-moving cells. High search radius (> 16 microns) and low minimum track point settings (< 22 frames) led to erroneous tracking and poor data quality. Suitable settings for these setup parameters (search radius = 13 microns; minimum track points = 24) were chosen for use in subsequent fertility trials because they caused the least sampling bias.

Animals↗