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  • 1
    Electronic Resource
    Electronic Resource
    Effect of pacing duration on right ventricular effective refractory period in man (1984)
    Springer
    Journal of molecular medicine 62 (1984), S. 773-776 
    Details
    ISSN: 1432-1440
    Keywords: Effective refractory period ; Right ventricle ; Dependence on stimulation duration
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary This study was performed to assess the dependence of the effect of the duration of stimulation on the effective refractory period (ERP). ERP was determined in 12 patients after four consecutive stimuli as well as after continuous stimulation for 1 min applying a constant stimuli interval of 600 msec. After 1 min stimulation all patients showed a significant (P〈0.01) decrease of the ERP with 236±23 SD msec in comparison to the ERP of 271±26 SD msec after four consecutive stimuli. Although it is well established that ERP depends on the previous cycle length, it is additionally influenced by the stimulation duration, as shown in this study. This must be considered when ERP or other electrophysiological parameters of the right ventricle are investigated.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01721776
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Niedrig dosierte Acetylsalicylsäure (100 mg/Tag) nach aortokoronarer Bypassoperation (1984)
    Springer
    Journal of molecular medicine 62 (1984), S. 458-464 
    Details
    ISSN: 1432-1440
    Keywords: Aspirin® ; Coronary Bypass ; Coronary Heart Disease ; Platlets ; Platlet Inhibition
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary A prospective, randomized, doubleblind, placebo-controlled trial was conducted to evaluate the efficacy of Acetylsalicylic Acid (ASS) (100 mg/d, starting 24 h after operation) on vein graft patency. Sixty of 88 patients having undergone surgery entered the study; in 24 of 31 patients in the placebo group and 22 of 29 patients in the ASS-group angiography was performed 4 months postoperatively. There were no significant differences between the groups with respect to age, number of diseased vessels or previous myocardial infarctions. Mean number of grafts per patient was 2,2 (placebo) and 1,8 (ASS) for proximal anastomoses (p〈0.10) and 3.4 (placebo) and 2.6 (ASS) for distal anastomoses (p〈0.05). Graft occlusion rate for proximal anastomoses was less in the ASS-group, 10% (4/40), as compared with placebo 32% (17/53) (p〈0.05). Graft occlusion rate for distal anastomoses was also less in the ASS group, 19% (11/57) as compared to 35% (28/81) in the placebo group (p〈0.10). All grafts were patent in 16/22 patients in the ASS group but only in 9/24 in the placebo group (p〈0.05). On designation of patients without postoperative angiograms but cardiovascular events as well as those with at least one graft occluded as “failures”, the incidence of the latter was 9/29 in the ASS group and 20/31 in the placebo group (p〈0.05). Early postoperative bleeding was similar in both groups, no side effects of ASS were observed. In this trial with initiation of low — dose ASS therapy 24 h after operation, antiplatlet therapy reduced the graft occlusion rate significantly.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01726907
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Ungekühlte Turboverdichter bei geänderten Betriebsbedingungen (1965)
    Weinheim : Wiley-Blackwell
    Chemie Ingenieur Technik - CIT 37 (1965), S. 1055-1062 
    Details
    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: In verfahrenstechnischen Anlagen müssen Turboverdichter oft mit anderen Medien oder unter anderen Betriebszuständen arbeiten, als sie bei der Auslegung projektiert wurden. Ähnliche Strömungszustände bei Auslegung und Versuch gestatten eine Umrechnung von Versuchsergebnissen auf Ansaugebedingungen, die sich im Versuchszeitraum nicht verwirklichen lassen. Können ähnliche Strömungszustände nicht eingestellt werden, ist es oft durch Zulassen von Abweichungen, die den Wirkungsgrad- und Kennlinienverlauf nicht merklich beeinflussen, noch möglich, den Turboverdichter richtig zu beurteilen. Es werden die Grenzen für die Versuchsbedingungen ermittelt, die sich aus den genannten Abweichungen ergeben.
    Additional Material: 7 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cite.330371010
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    Paper (German National Licenses)
    Fulltext
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