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  • 1
    ISSN: 1432-1173
    Keywords: Schlüsselwörter Kompressionstherapie ; Dynamische Anpreßdruckmessung ; Mikrodruckmeßsonde ; Compliance ; Key words Compression therapy ; Dynamic pressure measurement ; Piezometric microprobe ; Compliance
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Summary The well-documented positive effect of compression stocking therapy on the venous macro- and microhemodynamics of the legs can only be attained if the stockings fit well. In order to determine the effective pressure exerted by compression stockings, we usually deleted in US journals. One can get this out of journal and author’s address have developed a new measuring method based on piezoresistant microprobes and a microprocessor unit. With our 2-mm-thick, 5-mm diameter probe, the pressure between the compression stocking and skin can be measured at any location desired. A temporal resolution of 50 Hz makes it possible to carry out dynamic measurements while the patient is walking or performing exercises on tiptoes. Here we present 4 typical cases out of a total of over 80 which we have evaluated. We have decided empirically that the pressure exerted by a class-2 compression stocking on the skin at the height of the ankles (b-position) should not exceed 70 mm Hg while resting and a peak of 110 mm Hg while exercising on tiptoes. At the middle of the calf (c-position) these values should not exceed 60 mm Hg at rest and 80 mm Hg on tiptoes. The pressure should decrease from the distal to proximal direction in order to produce a drainage gradient. We have found empirically that a pressure gradient of 30–40% from the b to the c measurement is favorable. Too high a proximal pressure or too high a pressure on a part of the lower leg causes pain and swelling. Too low a pressure, on the other hand, does not produce the desired vascular effect and alleviation of symptoms. Although dynamic pressure measurements take about 20–30 minutes per leg, they markedly improve patient compliance with compression therapy.
    Notes: Zusammenfassung Die gut dokumentierte günstige Wirkung der Kompressionstherapie mit Kompressionsstrümpfen auf die venöse Makro- und Mikrohaemodynamik der Beine läßt sich nur mit gut angepaßten Strümpfen erreichen. Um den effektiven Anpreßdruck zu bestimmen, wurde an der Universitäts-Hautklinik Tübingen eine neue Meßmethode, basierend auf piezoresistiven Mikromeßsonden und einer Mikroprozessoreinheit, entwickelt. Der Anpreßdruck zwischen Kompressionsstrumpf und Haut kann mit den 2 mm dicken und 5 mm im Durchmesser großen Sonden an beliebigen Hautarealen gemessen werden. Die zeitliche Auflösung von 50 Hz erlaubt dynamische Messungen beim Gehen oder bei Zehenspitzenständen. Es werden hier 4 typische Fallbeispiele aus bisher über 80 Messungen dargestellt. Empirisch wurde ermittelt, daß der Anpreßdruck eines Strumpfes mit Kompressionsklasse 2 auf die Haut auf Knöchelhöhe (b-Maß) 70 mmHg in Ruhe und 110 mmHg Spitzendruck bei Zehenspitzenständen bzw. 60 mmHg in Ruhe und 80 mmHg bei Zehenständen in Wadenmitte (c-Maß) nicht überschreiten sollte. Der Anpreßdruck soll von distal nach proximal abfallen, um entstauend zu wirken. Empirisch wurden Druckdifferenzen von 30–40% vom b- zum d-Maß als günstig ermittelt. Zu hohe proximale Drucke bzw. zu hohe Drucke an einem Unterschenkelsegment verursachen Schmerzen und Schwellung. Zu niedrige Drucke führen nicht zur Entstauung und gewünschten Beschwerdelinderung. Die Compliance der Patienten hinsichtlich der Kompressionstherapie läßt sich durch eine dynamische Anpreßdruckmessung, die allerdings etwa 20–30 min Zeit pro Bein in Anspruch nimmt, deutlich verbessern.
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 1439-0973
    Keywords: Key Words Infectious disease service ; Cost control ; Multiresistant pathogens ; Intensive care ; Antibiotics
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Background: A routine infectious disease service was established in January 1998 in order to optimize the antibiotic usage and prescription pattern of a neurologic intensive care unit (NICU). Methods: Treatment guidelines for the most prevalent infections wer implemented and individual antibiotic regimes were discussed at the bedside with infectious disease experts. Results: This interdisciplinary cooperation reduced the total number of antibiotics prescribed by 38.1%, from 7,789 in 1997 to 4,822 in 1998, without comprimising patient outcomes (mortality rate: 22/313 patients in 1997 vs 32/328 patients in 1998). Total patient days (2,254 days vs 2,296 days) and average length of stay in the NICU (7.2 days vs 7.0 days) were comparable. Antimicrobial expenditure decreased by 44.8% (71,680 Euros in 1997 vs 39,567 Euros in 1998). Taking into account the costs for the infectious disease service (approximately 8,000 Euros in 1998), a total saving of 24,113 Euros was made. The dramatic reduction in antibiotic usage (mainly of carbapenems) resulted in a statistically significant decreased isolation of Stenotrophomonas maltophilia (p 〈 0.05), Enterobacter cloacae (p 〈 0.05), multiresistant Pseudomonas aeruginosa (p 〈 0.05) and Candida spp. (p 〈 0.05), without any change in the infection control guidelines. Conclusion: These data show that an infectious disease service can optimize and reduce antibiotic usage. This results in a decrease in the occurrence of multiresistant gram-negative pathogens and Candida spp. in intensive care units, and, at the same time, saves costs.
    Type of Medium: Electronic Resource
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