Biomedical subjects
Publications and source records attributed to C Grassi.
This work deals with a modification of a thromboelastograph which enables to measure both in vitro and in vivo effectiveness of mucolytic substances. A simple method is described for building up a comparative diagram of the effectiveness of several drugs; a diagram which is of interest from both a pharmacological and a clinical point of view.
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In 69 out-patients with chronic bronchitis in 6 centres the effects of acetylcysteine 600 mg daily, 3 days a week for 6 months, and a placebo have been compared in a double-blind controlled trial. Thirty-five patients were treated with the mucolytic and 34 with the dummy preparation. In the former the clinical course of the chronic bronchitis improved to a greater extent and a significantly lower number of exacerbations was observed. The advantages of long-term oral treatment with the mucolytic in chronic bronchitis suggest that it may be useful as an alternative to long-term antibiotic prophylaxis, or to complement brief courses of antibiotics, in addition to the usual physiotherapy.
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A technique and an original apparatus for recording and displaying the sound levels emitted by human lungs during respiratory movements are described. By means of it a graphic recording of chest acoustics can be obtained. An analysis of the phonopneumographic findings shows clear differences between normal pathological readings, both in the level of the sounds and in their frequency content. Evidence is given of cases in which the physician can directly recognize the presence of special diseases. Beside this, FPGraphic representations are also useful for retaining evidence of findings which cannot be recorded by other methods, and for checking the natural evolution of a disease or its response to clinical treatments.
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The authors study the influence of acute and chronic ethanol intoxication on the blood levels of rifampicin and isoniazid as well of aminoglycoside antibiotics in rats. While the acute ethanol intoxication has no influence on blood levels of tested antibiotics, in the chronic inotoxication lower levels of rifampicin and higher levels of isoniazid are observed. A study was performed also to determine the influence of an acute and chronic treatment with alcohol and the avoe quoted antibiotics on the BSP elimination rate. In the acute as well as in the chronic experiments, a constant significant delay in the elimination of BSP was observed in animals treated with rafampicin either alone or associated with alcohol. Isoniazid modified the dye elimination in comparison to controls only in chronic experiments. Ethanol did not seem to have any influence on this behavior. The implications and the possible significance of these findings are discussed.
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