[A new drug reaches Switzerland: coma after intake of gamma-hydroxybutyrate (GHB)]. / Eine neue Droge erreicht die Schweiz: Koma nach Einnahme von Gamma-Hydroxybuttersäure (GHB).

The new recreational drug, gamma-hydroxybutyrate (GHB, "liquid ecstasy"), reached Switzerland in 1998. We describe two cases from the city of Zurich. In both of them the subjects were profoundly unconscious and needed hospitalization after intake of a colourless liquid. Both patients recovered after a few hours, rapidly and without after-effects. Gamma-hydoxybutyrate is abused mainly for its euphorigenic and sedative properties by young people in discos, at raves, or on the drug scene. It is also taken as an alleged anabolic agent among bodybuilders. Criminals use it to narcotise potential victims. We summarise its effects, adverse effects, diagnosis, treatment, toxicology, pharmacology, and medical applications.

[Evaluation of the QBC-Autoread System in hematological screening in a hospital laboratory]. / Evaluation des QBC-Autoread-Systems zum hämatologischen Screening in einem Spitallaboratorium.

The QBC Autoread System is based on fully automatic, electro-optical linear measurements of the discrete layers of packed blood cells in a microhematocrite tube. The layering results from differing cell densities during high-speed centrifugation. The determination of hemoglobin, hematocrit, leucocytes, platelets and of the percentual share of granulocytes and lymphocytes/monocytes with the QBC Autoread System was evaluated concerning reliability and precision in comparison with the conventional analytical methods. We used a Coulter Counter System and the manual differentiation of the stained blood smears as reference methods. The evaluation of the first 400 blood samples showed a close correlation for all hematological parameters examined, but no significant deviation relative to the reference methods. Only 83 of totally 1000 (8.3%) examined venous blood samples could not be evaluated completely by the QBC Autoread System. For the analysis of very pathological cell populations, especially of hematological oncological diseases, the QBC System is not qualified. The extreme portability, the quick practicability and the good accordance with the conventional analytical methods make the QBC Autoread System a qualified screening method for practice and emergency laboratories.