[Chemical compatibility of ketamine and midazolam in infusion solutions].

The chemical compatibilities of intravenous (i.v.) solutions containing ketamine and midazolam were investigated by UV/VIS spectroscopy, IR spectroscopy, and high-performance liquid chromatography (HPLC).

[The physical compatibility of ketamine and diazepam in infusion solutions].

Physical compatibilities of infusion solutions containing ketamine and diazepam or midazolam in different concentrations were studied by visual examination and by light-scattering measurements. The isotonic infusion solutions used were fructose 5%, glucose 5%, and NaCl 0.9%.

[The relief of postspinal headache using the Whitacre cannula. A clinical study].

In a prospective study spinal anesthesia was performed in 500 patients (338 male and 162 female patients between 16 and 91 years of age: mean 46 years), with a total number of 603 spinal anesthetics. In all cases a 22G Whitacre needle was used. All patients were mobilized from the day of the operation onward and visited 4 days later by the interviewer and asked about any symptoms, especially headache.