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  • 33.20.kf  (1)
  • Newborn infant  (1)
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  • 1
    Electronic Resource
    Electronic Resource
    Transient electrocardiographic changes suggesting myocardial ischaemia in newborn infants following tocolysis with beta-sympathomimetics (1990)
    Springer
    European journal of pediatrics 149 (1990), S. 730-733 
    Details
    ISSN: 1432-1076
    Keywords: Newborn infant ; Myocardial ischaemia ; β-Sympathomimetics
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Serial electrocardiograms (ECGs) were studied prospectively in 80 apparently healthy newborn infants; 30 infants exposed in utero to prolonged tocolytic therapy (21 to ritodrine and 9 to isoxsuprine) and 50 infants non-exposed in utero to drugs (control group) matched for gestational age, Apgar score, and birth weight. Duration of exposure to tocolysis was at least 30 days (30–180 days) with an oral dosage of 10 mg 3 times daily. ECGs were graded for changes suggestive of ischaemia using the arbitrary grading system described by Jedeikin et al. [12]. In all infants with ECG features of myocardial ischaemia, serum creatine-phosphokinase iso-enzyme (CK-MB) activity was measured. Six out of 21 infants to ritodrine and six out of nine infants exposed to isoxsuprine showed a degree of ECG ischaemia which persisted for several weeks. No control infant presented grade 2 or 3 ECG changes after the 5th day of life. The results of this study seem to show that prolonged tocolytic therapy with β-sympathomimetics has side-effects on the fetal myocardium and suggest that this treatment be reserved only for selective cases and/or for short periods of time.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01959533
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Two photon states in alkali metal clusters (1991)
    Springer
    The European physical journal 21 (1991), S. 281-283 
    Details
    ISSN: 1434-6079
    Keywords: 36.40. + d ; 33.20.kf
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract We study the problem of two-photon absorption in alkali metal clusters: a) by using a sum rule approach for double dipole excitation operators to have some insight on the nature of the corresponding excited states; b) by using a simple random phase approximation [RPA] model to develope an harmonic model for the excited states of the system which allows an explicit prediction for the probability to excite states in the vibrational band build on the surface plasma resonance.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01426386
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    Paper (German National Licenses)
    Fulltext
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