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- Abrahamsson, Christina, et al.
(författare)
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DeltaT50 - a new method to assess temporal ventricular repolarization variability
- 2011
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Ingår i: Journal of Electrocardiology. - : Elsevier BV. - 1532-8430 .- 0022-0736. ; 44:4
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Tidskriftsartikel (refereegranskat)abstract
- Background Increased beat-to-beat variability in cardiac repolarization time is a tentative risk marker of drug-induced torsades de pointes. We developed a new, automatic method based on the temporal variability of the T-wave down slope to assess this variability. Method and Results Leads V1 to V6 of resting electrocardiograms were recorded in 42 healthy subjects (18-68 years, 22 men). The temporal variability at 50% of the T-wave down slope, deltaT50 (1.5 ± 0.41 milliseconds; range, 0.86-2.66 milliseconds), was measured with an accuracy of 1 millisecond on at least 9 pairs of electrocardiogram complexes with a signal-to-noise ratio more than 10 and changes in the R-R interval less than 150 milliseconds. The correlation between repeated measurements of deltaT50 was high. DeltaT50 was measured without corrections for age, sex, heart rate, T-wave amplitude, signal-to-noise ratio, R-R variability, and QTcF because none of these factors explained more than 4% of the within-subject deltaT50 variability. Conclusion The beat-to-beat repolarization variability was measured with high fidelity with the deltaT50 method and was a robust measure in healthy volunteers.
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| 2. |
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| 3. |
- Hellström, Christina, et al.
(författare)
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Psykologiska och sociala aspekter på kronisk smärta
- 2000
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Ingår i: Delaktig eller utanför. Sven G Carlsson, Erland Hjelmquist & Ingvar Lundberg, red.. - Umeå : Boréa. ; , s. 85-104
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Bokkapitel (övrigt vetenskapligt/konstnärligt)
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| 4. |
- Segelod, Esbjörn, 1951-, et al.
(författare)
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The emergence of uniform principles of cost accounting in Sweden 1900-36
- 2010
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Ingår i: Accounting Business and Financial History. - : Routledge, Taylor & Francis Group. - 0958-5206 .- 1466-4275. ; 20:3, s. 327-363
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Tidskriftsartikel (refereegranskat)abstract
- The purpose of this article, using evidence from the archives of ASEA, of contemporary publications, and of statements by eye witnesses, is to identify and describe the principal forces and actors which shaped the Swedish cost accounting system, a system moulded in a process starting in the early twentieth century and ending in 1936 with the approval of a set of recommendations for uniform principles of cost accounting. These recommendations, with the terminology and practice they specify, are still taught to students of accountancy in Sweden; they are applied in many Swedish companies, and have influenced practice also in other Nordic countries. The process of standardization was initiated by influences from the United States but was later influenced mainly by the current German process of standardization. This paper questions the traditional view that the Swedish uniform principles originated in German cost accounting, and was the result of a battle between American practice (as exemplified by SKF) and German practice (as represented by ASEA). It will be shown that the Swedish uniform principles are based ASEA’s system, implemented in 1919, and that while not dissimilar to what later became known as German practice, may equally well be derived from American practice and cost accounting debate. We shall also show that the process was driven by engineers, many of whom had worked in the United States, were involved in the efficiency movement and were proponents of scientific management.
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