Biomedical subjects
Publications and source records attributed to A Jatzko.
A new portable quantitative capnometer (Bruker CO2 Module) was tested in an animal lab (mini-pigs) during experiments on air embolism. The end-tidal CO2 values, as measured with this device, showed good agreement with the values of a stationary capnography unit. This device seems suited for quantitative capnometry in the prehospital setting.
The Göttingen Mini-pig is a popular laboratory animal, that is used i.a. in experimental surgery and anaesthesia. For ethical and scientific reasons it is mandatory to minimize the stress the laboratory animals are exposed to. The presented stress-free experimental anaesthesia induction (ZESTRANI) is based on innovative means to achieve adequate analgesia using different substances appropriate for the animal's state of consciousness. Markedly lower heart rates and mean arterial pressures are seen when the ZESTRANI-method is used as compared retrospectively to the previously used "conventional" anaesthesia induction. With the ZESTRANI method no "fight or flight"-reactions are seen.
Transillumination-guided intubation is a useful back-up method when laryngoscopic intubation proves to be difficult or impossible. The Trachlight (Laerdal, N-4001 Stavanger, Norway) is suited for both nasal and oral use. Intubation times (IT) and success rates (SR) for nasal and oral intubation with the Trachlight were compared. Twenty-four medical students, inexperienced in intubation were instructed in the use of the Trachlight. A demonstration also was performed. Subsequently, they were asked to intubate a Laerdal Airway Management Trainer (Laerdal, Stavanger, Norway) using the Trachlight. Each student intubated 10 times orally and 10 times nasally (five times through the right and five times through the left nostril). The succession of the students was randomized. The intubation times were measured and the position of the tube noted. Nasal and oral intubation times for the tenth trial (steady state conditions) were compared using the rank-order test for paired observations. Oral and nasal success rates were compared using the sign test for paired observations. The differences between nasal and oral intubation concerning intubation time and the success rates were not significant. Nasal intubation with the Trachlight seems to be more difficult than the oral intubation.