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  • 1995-1999  (2)
  • 1998  (2)
  • 1
    ISSN: 1433-0407
    Keywords: Schlüsselwörter Elektrokrampfbehandlung ; Ältere Patienten ; Depression ; Nutzen ; Risiken ; Key words Electroconvulsive therapy ; Elderly patients ; Depression ; Benefits ; Risks
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Summary Between January 1995 and June 1996, 24 inpatients at our hospital (mean age 55.6 years) were treated with electroconvulsive therapy (ECT). Clinical improvement was observed in 80% of the patients, including those without risk factors (NRG, n=16), as well as those with concomitant cardiovascular diseases (RG, n=8). During a mean period of observation of 224 days after the end of ECT 7 patients (35%) relapsed. The rate of relapse was higher in RG than in NRG patients (57.1 vs 23.1%). In all cases ECT was well tolerated; 285 applications of ECT did not result in mortality or persistent morbidity. However, RG patients may be at increased risk for the development of minor cardiovascular complications, which were noted in three RG patients (37.5%), but only in one patient (6.2%) in the NRG (Fisher’s test, P=0.09). Taken together, our results demonstrate that ECT is a safe treatment regimen for depression even in medically ill patients of old age.
    Notes: Zusammenfassung Vierundzwanzig Patienten (Altersdurchschnitt 55,6 Jahre) wurden im Zeitraum 1/95 bis 6/96 an unserer Klinik mit der Elektrokrampftherapie (EKT) behandelt. Sowohl Risikopatienten mit kardiovaskulären Begleiterkrankungen (RG, n=8) als auch Patienten mit p.d. nicht erhöhtem Risiko (NRG, n=16) zeigten in über 80% der Fälle eine klinische Besserung. Bei 7 (35%) dieser Patienten kam es während des mittleren Beobachtungszeitraumes von 224 Tagen nach Abschluß der 1. EKT-Serie zu einer erneuten Exazerbation der psychischen Störung. Dabei zeigten RG-Patienten eine höhere Rückfallquote im Vergleich zu Patienten der NRG (57,1% vs. 23,1%). In allen Fällen konnte die EKT regulär beendet werden; bei insgesamt 285 durchgeführten EKT traten keine schwerwiegenden Komplikationen auf. Allerdings hatten RG-Patienten im Vergleich zu Patienten der NRG ein höheres Risiko für das Auftreten geringfügiger kardialer Komplikationen (37,5% vs. 6,2%, Fisher’s Test p=0,09). Zusammenfassend demonstrieren unsere Ergebnisse, daß die EKT auch bei Risikopatienten eine sichere Behandlungsmethode ist.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Journal of materials science 33 (1998), S. 4365-4374 
    ISSN: 1573-4803
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract Microstructures of melt-spun Ni–Al alloys with compositions from 61–85 at% Ni were studied by means of transmission electron microscopy, X-ray diffraction analysis and optical microscopy. The microstructures of as-quenched ribbons exposed to cooling rates of the order of 106 K s-1 reflect the transition from primary β-NiAl to γ-Ni solidification with increasing nickel content. In 70 at% Ni alloy ribbons, martensitic NiAl grains were detected near the wheel-side surface contrasting with anomalous and lamellar eutectic microstructure in the top part. Directly ordered Ni3Al grains with single (or large) antiphase domains (APDs) and a minor eutectic fraction were observed in 75 at% Ni alloy ribbons. Samples containing 80 at% Ni exhibit mainly single-phase Ni3Al grains with 10–20 nm sized APDs indicating sequential ordering. Weak L12 ordering was even detected in 85 at% Ni ribbons which displayed ordered antiphase zones of 1 nm size. Disordered γ-(Ni) films on grain boundaries can be discounted for 80 at% Ni ribbons, but occurred near the top of 85 at% Ni samples. The results are explained in terms of the reassessed Ni–Al phase diagram employing recent corrections near to the Ni3Al composition and new results on phase formation in undercooled Ni–Al melts. © 1998 Kluwer Academic Publishers
    Type of Medium: Electronic Resource
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