A combined method of respirator ventilation and electrically stimulated diaphragm ventilation is discussed. A regulating device has been developed which ensures synchronous action of respirator stimulation and actual electrical stimulation by delaying the electrical impulses on the one hand and on the other hand by data of various parameters. The effect of diaphragm stimulation is measured by a mechanical-electrical transformer. With the aid of the device the effect of the combination of respirator ventilation and electrically stimulated diaphragm ventilation on lung function and on the pulmonary circulation was examined in animal experiments. The results are discussed systematically on the basis of the data obtained.Zusammen[assung. Es wird die Methode zur Kombination von Respiratorbeatmung und elektriseh stimulierter Zwerchfellbeatmung besprochen. Daffir wurde ein Steuergeri~t entwickelt, welches einerseits durch Zeitverz5gerung der elektrischen Impulse, andererseits durch Kennwerte mehrerer Parameter den synchronen Betrieb yon Respirator-und der eigentlichen elektrischen Stimulation gewi~hrleistet.Der Effekt der Zwerchfellstimulation wird fiber einen meehanisch-elektrischen Umsetzer gemessen.Unter Verwendung dieses Ger~tes wurde tierexperimentell der Effekt der Kombination yon Respirator-und elektrisch stimulierter Zwerchfellbeatmung auf die Lungenfunktion und den Lungenkreislauf untersucht.Die Ergebnisse werden anhand der erhobenen MeBwerte systematisch diskutiert.
Aminos/iuren-Bestimmung im Serum bei der parenteralen Ern/ihrung SchwerkrankerJ. ScH~ AM ESOH*, J. B~uE~ und M. Do~E~-Bonn Amino-Acid Estimations in the Serum in Parenteral Feeding of the Seriously IllSummary. In 16 seriously ill patients (8 with multiple injuries and 8 after gastrointestinal resections with other complicating conditions) the amino-acids in the serum were estimated on 4 successive days in ion exchange columns with the aid of chromatography. On the first day blood specimens for amino-acid estimation were taken as controls. This was followed by infusion of 500 ml of a 10 °/0 fat emulsion. After a control analysis at the start of the second day 1 litre of an amino-acid
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