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  • 11
    Electronic Resource
    Electronic Resource
    Springer
    Diabetologia 3 (1967), S. 406-412 
    ISSN: 1432-0428
    Keywords: implantation ; assessed ; gradings ; improve ; irregularities ; equivalent ; comparing ; categories ; ablation ; deteriorate declined ; effective
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Résumé 1. L'évolution de la rétinopathie après implantation hypophysaire d'yttrium radioactif a été suivie pendant 1 à 7 ans (moyenne 2 ans) chez 60 diabétiques et évaluée à partir de photographies de la rétine et de mesures de l'acuité visuelle. — 2. Le degré d'hypopituitarisme provoqué (par trois doses différentes d'yttrium90) a varié et a été estimé par des tests de la fonction thyroïdienne et surrénale, en trois degrés de destruction: «maximale», «intermédiaire» et «légère». — 3. Dans tout le groupe, alors que les exsudats, la rétinite proliférante et l'acuité visuelle ne se sont pas améliorés, les hémorragies et les micro-anévrysmes, les néo-vaisseaux et les irrégularités veineuses se sont améliorés au bout d'un an et ont continué à s'améliorer jusqu'au dernier contrôle. — 4. En comparant les résultats, soit après un an, soit au contrôle final, les effets de la destruction «maximale» ou «intermédiaire» de l'hypophyse se montrèrent équivalents, mais nettement supérieurs à ceux de la destruction «légère». En particulier les hémorragies et les microanévrysmes ont montré une amélioration égale après l'implantation, dans les trois catégories de destruction. Les néo-vaisseaux se sont améliorés également dans les catégories de destruction «maximale» et «intermédiaire», mais non dans la catégorie «légère». Les irrégularités veineuses se sont améliorées de manière perceptible seulement après la destruction «maximale». La rétinite proliférante s'est aggravée dans les trois catégories de destruction, bien que la destruction «maximale» fut plus efficace que la «légère» pour la prévention de nouvelles lésions. L'acuité visuelle a décliné seulement dans la catégorie «légère».
    Abstract: Zusammenfassung 1. Bei 60 Patienten wurde der Verlauf der diabetischen Retinopathie nach Implantation von Yttrium90 1–7 Jahre lang (im Mittel 2 Jahre) verfolgt. Die Beurteilung wurde nach der Sehschärfenmessung und Photographien des Augenhintergrundes vorgenommen. — 2. Der Grad der therapeutisch erzeugten Hypophysenunterfunktion (durch 3 verschiedene Yttrium90 Dosen) war unterschiedlich. Durch Prüfung der Schilddrüsenund Nebennierenfunktion wurde der Grad der Schädigung als „maximal“, „mittel“ und „leicht“ eingestuft. — 3. Während sich bei der Gesamtgruppe die Exsudate, die Retinitis proliferans und die Sehschärfe nicht besserten, kam es zu einer Besserung der Blutungen und Mikroaneurysmen, der Gefäßneubildungen und Venenunregelmäßigkeiten nach einem Jahr. Diese Besserung nahm bis zu der letzten Nachuntersuchung noch zu. — 4. Beim Vergleich der Ergebnisse nach einem Jahr oder auch bei der letzten Untersuchung, schienen die Effekte der „maximalen“ und „mittleren“ Hypophysenschädigung gleich zu sein, doch waren sie deutlich ausgeprägter gegenüber der „leichten“ Schädigung. Im einzelnen betrachtet zeigten die Blutungen und Mikroaneurysmen nach der Implantation bei allen drei Gruppen die gleiche Besserung. Die Gefäßneubildungen besserten sich in der „maximalen“ und „mittleren“ Schädigungsgruppe gleich, jedoch nicht in der „leichten“ Gruppe. Die Venenunregelmäßigkeiten besserten sich erkennbar nur nach „maximaler“ Schädigung der Hypophyse. Die Retinitis proliferans verschlechterte sich in allen drei Gruppen, obwohl die „maximale“ Gruppe weniger neue Schäden erkennen ließ als die „leichte“. Die Sehschärfe nahm nur in der „leichten“ Gruppe weiter ab.
    Notes: Summary 1. The progress of the retinopathy after pituitary implantation has been followed for 1–7 years (mean 2 years) in 60 diabetic patients and assessed from gradings of the retinal photographs and visual acuity measurements. — 2. The degree of hypopituitarism induced (by three different yttrium90 dosages) had varied and has been assessed by tests of thyroid and adrenal function into three grades of ablation, “maximal”, “intermediate” and “slight”. — 3. In the whole group, while exudates, retinitis proliferans and visual acuity did not improve, haemorrhages and microaneurysms, new vessels and venous irregularities had improved after 1 year, and these continued improving up to the latest assessment. — 4. On comparing the outcome at either 1 year or the final assessment, the effects of “maximal” or “intermediate” pituitary ablation appeared equivalent, but clearly superior to “slight” ablation. In particular, haemorrhages and microaneurysms showed equal improvement postimplant in all three ablation categories. New vessels improved in the “maximal” and “intermediate” ablation categories equally, but not in the “slight” category. Venous irregularities improved discernibly only after “maximal” ablation. Retinitis proliferans deteriorated in all three ablation categories, although “maximal” was more effective than “slight” in preventing new lesions. Visual acuity declined only in the “slight” category.
    Type of Medium: Electronic Resource
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  • 12
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 206 (1965), S. 708-709 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The flame detector used in these experiments was fitted with two electrodes insulated from the outer housing, the jet being connected to the housing5. Both stainless steel electrodes were horizontal, the lower being a ring, the upper a gauze. The upper electrode was sensibly at earth potential, and ...
    Type of Medium: Electronic Resource
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  • 13
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 205 (1965), S. 593-593 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] A steady stream of 500 ml./min of ordinary commercial argon from the British Oxygen Co. was passed through a drying train consisting of two U-tubes filled with Linde type 13 x molecular sieve, in series with a further two U-tubes filled with phosphorus pentoxide. The water content of the issuing ...
    Type of Medium: Electronic Resource
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  • 14
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 201 (1964), S. 1215-1216 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Fig. 1. Variation of sensitivity factors (Peak height with diluent gas\ peak height with oxygen for nitrous oxide and carbon dioxide, with purge-anode separation The effect of nitrous oxide and carbon dioxide is very similar. The increase in sensitivity is a linear function of the proportion of ...
    Type of Medium: Electronic Resource
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  • 15
    Electronic Resource
    Electronic Resource
    Springer
    Bulletin of environmental contamination and toxicology 16 (1976), S. 495-502 
    ISSN: 1432-0800
    Source: Springer Online Journal Archives 1860-2000
    Topics: Energy, Environment Protection, Nuclear Power Engineering , Medicine
    Type of Medium: Electronic Resource
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  • 16
    Electronic Resource
    Electronic Resource
    Springer
    Intensive care medicine 3 (1977), S. 15-26 
    ISSN: 1432-1238
    Keywords: Trend Detection ; Prediction ; Patient Monitoring ; Microprocessor
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract An investigation has been carried out into the suitability of the following techniques for trend detection and forecasting in patient monitoring: Cusum; Trigg's Tracking Signal; The Patient Condition Factor; The Patient Alarm Warning System; Box-Jenkins models and the Harrison-Stevens Bayesian approach. The latter holds considerable promise since it is flexible and can be implemented on a microprocessor. Consideration has also been given to the need for a better knowledge of the statistical properties of the variables to be monitored and the problems of combining trends detected in severable variables.
    Type of Medium: Electronic Resource
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  • 17
    Electronic Resource
    Electronic Resource
    Springer
    Intensive care medicine 3 (1977), S. 35-39 
    ISSN: 1432-1238
    Keywords: Transcutaneous ; Oxygen tension ; Intensive Therapy Unit ; Adult ; Neonatal Care Unit
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract The use of transcutaneous monitoring of the PO2 in patients in an adult intensive therapy unit has been found to be a simple and reliable procedure. The electrodes were heated to 44°C in order to obtain a near maximal response. In individual patients, the transcutaneous reading may be up 20 per cent different from the arterial value. However, the difference is reproducible for a given patient and does not detract from the value of the technique in following trends. The ease of use of the non-invasive transcutaneous technique has brought to light numerous instances of marked fluctuations occurring in patients oxygen tensions.
    Type of Medium: Electronic Resource
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  • 18
    ISSN: 1432-1238
    Keywords: Blood Resistivity ; Cardiac Output ; Electrical Impedance
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract A relationship has been established between the haematocrit and the resistivity of whole blood at 37°C for neonates and adults not suffering from renal failure. Values of resistivity obtained in this way were substituted into Kubicek's equation for stroke volume by the electrical impedance technique, the signal pick-up electrodes being placed in standard positions. The calculated cardiac outputs were then compared with those obtained simultaneously from other techniques such as the dye dilution method for adults and the measurement of pulmonary effective capillary blood flow by rebreathing nitrous oxide in neonates. It was found that the impedance method overestimates under these circumstances, and other workers have shown that this is likely to be due to a contribution from the right heart. A haemotocrit-dependent correction factor has been employed in the case of neonates to align the impedance and nitrous oxide results.
    Type of Medium: Electronic Resource
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  • 19
    ISSN: 1432-1238
    Keywords: Myocardiac contractility changes ; Thoracic electrical impedance
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract The suitability of the peak value of the first derivative of the thoracic electrical impedance dZ/dtmax has been investigated in dogs as a non-invasive index of changes in myocardial contracility by comparing if with the peak left ventricular dP/dt and the peak values of aortic blood velocity and acceleration. An increase in the inspired halothane concentration was used to produce changes in contracility. In 5 dogs the combined values for the correlation coefficient between dZ/dtmax peak velocity and acceleration were respectively 0.937, 0.954 and 0.950. In 14 out 15 comparisons p〈0.001 and in one, p〈0.01. On these grounds, dZ/dtmax is proposed as a variable worthy of consideration in patient monitoring.
    Type of Medium: Electronic Resource
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  • 20
    Electronic Resource
    Electronic Resource
    Springer
    Intensive care medicine 1 (1975), S. 125-128 
    ISSN: 1432-1238
    Keywords: Arterial blood pressure ; pre-processor ; patient monitoring ; digital computer
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Two different methods, one analogue and one digital, for the analysis of the arterial blood pressure waveform are described and compared. Little difference was found in the systolic and diastolic pressures determined by the two methods.
    Type of Medium: Electronic Resource
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