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  • 1
    Electronic Resource
    Electronic Resource
    Dual Sensor Pacemakers in Children: What is the Choice of Sensor Blending? (1997)
    Oxford, UK : Blackwell Publishing Ltd
    Pacing and clinical electrophysiology 20 (1997), S. 0 
    Details
    ISSN: 1540-8159
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Dual sensor pacemakers were developed to obtain more appropriate responses to activity. We evaluated ten children with dual sensor pacemakers in different sensor blending circumstances using exercise testing to assess which ratio was optimal. Ten patients with several bradydysrhythmias (ages 6-16 years; mean 10.1 years) were included in the study. Eight patients had WIR pacemakers (Vitatron Topaz), models and two patients had VDD pacemakers implanted via the transvenous route. All patients were in a paced rhythm (98.5% pacing). Accurate T wave sensing ranged from 81%-100%; mean 92%, median 95%. Voluntary exercise testing with a CAEP protocol was performed using a treadmill with the pacemaker in WIR mode. Medium activity threshold with three sensor blending ratios (QT = ACT, QT 〉 ACT, and QT 〈 ACT) were done in all patients. The mean duration of exercise was not statistically different among the three sensor blending ratios. After 90 seconds of exercise, the mean pacing rate had increased by 12%, 3%, and 5%, respectively, in the three groups. At maximal exercise, the increases were 45%, 42%, and 54%. Mean HRs during exercise in each of the three ratios were not significantly different, although we found a statistically significant increase in HR during the first two stages of rest period in the QT = ACT sensor blending ratio compared to the QT 〉 ACT ratio. No difference was observed after the second stage. In conclusion: (1) there is no difference between the QT = ACT, QT 〈 ACT, and QT 〉 ACT sensor blending ratios; and (2) each child has to be evaluated by exercise testing to program a correct sensor blending ratio. (PACE 1997; 20[Pt. I]:1301-1304)
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1540-8159.1997.tb06783.x
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  • 2
    Electronic Resource
    Electronic Resource
    Measurement of thin aluminium layers on silicon
    Amsterdam : Elsevier
    Nuclear Instruments and Methods 180 (1981), S. 663-665 
    Details
    ISSN: 0029-554X
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Energy, Environment Protection, Nuclear Power Engineering , Physics
    Type of Medium: Electronic Resource
    URL: http://linkinghub.elsevier.com/retrieve/pii/0029-554X(81)90115-4
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Electron Pulse Irradiation of Semiconductor Devices (1989)
    s.l. ; Stafa-Zurich, Switzerland
    Solid state phenomena Vol. 6-7 (Jan. 1989), p. 361-366 
    Details
    ISSN: 1662-9779
    Source: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Topics: Physics
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/02/25/transtech_doi~10.4028%252Fwww.scientific.net%252FSSP.6-7.361.pdf
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  • 4
    Electronic Resource
    Electronic Resource
    The role of serotonin re-uptake inhibitors in preventing recurrent unexplained childhood syncope – a preliminary report (1997)
    Springer
    European journal of pediatrics 156 (1997), S. 747-750 
    Details
    ISSN: 1432-1076
    Keywords: Key words Syncope ; Head-upright tilt ; Sertraline ; Children
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract To assess the efficacy of a serotonin re-uptake inhibitor, sertraline hydrochloride, in preventing recurrent neurocardiogenic syncope, we studied 15 patients (10 female; mean age 12.9 ± 2 years) with positive head-upright tilt test and resistant to standard pharmacotherapy, atenolol or disopyramide. The patients were given 50 mg oral sertraline hydrochloride daily for 6 weeks. Intolerance to the drug was seen in 3 patients and 2 had syncopal episodes during the therapy. A head-upright tilt table test was then repeated in 10 patients. Six were tilt negative and asymptomatic over a mean follow up period of 7 ± 3 months while four remained tilt positive: two experienced marked hypotension and bradycardia, characterized as mixed type syncope, and two had cardiac asystole, lasting 〉10 s, during tilting, thereby exhibiting a cardio-inhibitory response. Conclusion Sertraline hydrochloride may be useful in preventing recurrent neurocardiogenic syncope resistant to standard pharmacotherapy but careful clinical studies are essential before such a treatment strategy can be recommended since serious asystole could develop.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s004310050704
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  • 5
    Electronic Resource
    Electronic Resource
    Severe Intrauterine Growth Retardation, Aged Facial Appearance, and Congenital Heart Disease in a Newborn with Johanson–Blizzard Syndrome (2000)
    Springer
    Pediatric cardiology 21 (2000), S. 389-390 
    Details
    ISSN: 1432-1971
    Keywords: Key words: Intrauterine growth retardation — Aged facies — Congenital heart disease — Johanson–Blizzard syndrome
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract. We report a female newborn with Johanson–Blizzard syndrome associated with extreme intrauterine growth retardation, aged facial appearance, and atrial septal defect. Other features are microcephaly, prominent veins over the scalp, alopecia over the vertex, wide-open fontanelle, high forehead, antimongoloid slant, edematous eyelids, the absence of eyebrows and eyelashes, beaked nose with alae nasi, low-set ears, thin lips, and micrognathia. Investigations revealed deafness and congenital hypothyroidism. We believe that this association of severe intrauterine growth retardation and congenital heart disease represents the components of this syndrome.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s002460010089
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  • 6
    Electronic Resource
    Electronic Resource
    Depth profiling of brass by means of PIXE (1985)
    New York, NY [u.a.] : Wiley-Blackwell
    X-Ray Spectrometry 14 (1985), S. 62-68 
    Details
    ISSN: 0049-8246
    Keywords: Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Physics
    Notes: The PIXE (particle-induced x-ray emission) depth profiling technique was applied to brass coatings on steel wire. Applying protons with energies E0 = 100-360 keV from a small electrostatic accelerator, the surface region to a depth of up to about 1 μm can be investigated. Three, or at maximum four, parameters of a suitable model function for the concentration profile were evaluated by analysing the ratio of Cu Kα and Zn Kα experimental x-ray yields as a function of the primary energy of the particles.
    Additional Material: 10 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/xrs.1300140206
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