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  • Bicarbonate  (2)
  • 21.10M  (1)
  • Acquired immunodeficiency syndrome  (1)
  • 1
    ISSN: 1432-1076
    Keywords: Key words Term newborns ; Dyspnoea ; Volume expansion ; Bicarbonate
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract In a prospective, randomised, open trial 103 term newborns with persisting dyspnoea, tachypnoea and/or cyanosis were treated with oxygen for 5–10 min and then with oxygen plus mask continuous positive airway pressure (CPAP) for another 5–15 min. Cases with overt prenatal or intrapartum obstetric pathology had been excluded from the study. Forty-one infants (40%) responded to this procedure within 10–25 min. The remaining 62 infants (60%) were randomly allocated to one of three forms of further treatment: continuation of mask CPAP for 20 min (group A, n = 24), volume expansion with 9 ml of 3 ml albumin, 3 ml glucose, and 3 mEq of sodium bicarbonate (group B, n = 24), or volume expansion with 4.5 ml albumin and 4.5 ml glucose (group C, n = 14). There was no statistical difference in birth weight, gestational age or Apgar scores at 1 and 5 min between the infants of the groups. Time to normalisation of symptoms was significantly shorter in the volume expansion groups (B: 45 ± 41 min, range 20–180, and C: 80 ± 72 min, range 20–210) than in the mask CPAP group (A: 224 ± 256 min, range 30–1200, P = 0.02). There were statistical differences in umbilical cord and capillary pH values among the infants of the three groups, but the response to therapy was not related to the degree of acidaemia. Thirty-four infants (33%) who did not respond were admitted to a special care unit for further examination (group A: 21/24, group B: 7/24; group C: 6/14). Of these, 23 had no abnormal findings, 8 infants had radiological signs of transitory respiratory distress, and 1 had a non-tension pneumothorax. Septicaemia was found in two infants. No infant was intubated. At discharge all 103 infants did well. Conclusion Incremental application of simple primary care procedures including volume expansion (with or without alkali) in term newborns with persisting postnatal tachypnoea and dyspnoea helps avoid overtreatment and unnecessary separation from the mothers in most cases and reliably selects infants who need close monitoring or special treatment.
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 1432-1076
    Keywords: Term newborns ; Dyspnoea ; Volume expansion ; Bicarbonate
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Abstract In a prospective, randomised, open trial 103 term newborns with persisting dyspnoea, tachypnoea and/or cyanosis were treated with oxygen for 5–10 min and then with oxygen plus mask continuous positive airway pressure (CPAP) for another 5–15 min. Cases with overt prenatal or intrapartum obstetric pathology had been excluded from the study. Forty-one infants (40%) responded to this procedure within 10–25 min. The remaining 62 infants (60%) were randomly allocated to one of three forms of further treatment: continuation of mask CPAP for 20 min (group A,n=24), volume expansion with 9 ml of 3 ml albumin, 3 ml glucose, and 3 mEq of sodium bicarbonate (group B,n=24), or volume expansion with 4.5 ml albumin and 4.5 ml glucose (group C,n=14). There was no statistical difference in birth weight, gestational age or Apgar scores at 1 and 5 min between the infants of the groups. Time to normalisation of symptoms was significantly shorter in the volume expansion groups (B: 45±41 min, range 20–180, and C: 80±72 min, range 20–210) than in the mask CPAP group (A: 224±256 min, range 30–1200,P=0.02). There were statistical differences in umbilical cord and capillary pH values among the infants of the three groups, but the response to therapy was not related to the degree of acidaemia. Thirty-four infants (33%) who did not respond were admitted to a special care unit for further examination (group A: 21/24, group B: 7/24; group C: 6/14). Of these, 23 had no abnormal findings, 8 infants had radiological signs of transitory respiratory distress, and 1 had a nontension pneumothorax. Septicaemia was found in two infants. No infant was intubated. At discharge all 103 infants did well. Conclusion Incremental application of simple primary care procedures including volume expansion (with or without alkali) in term newborns with persisting postnatal tachypnoea and dyspnoea helps avoid overtreatment and unnecessary separation from the mothers in most cases and reliably selects infants who need close monitoring or special treatment.
    Type of Medium: Electronic Resource
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  • 3
    ISSN: 1432-1459
    Keywords: Cytomegalovirus ; Acquired immunodeficiency syndrome ; Recombinant phosphoprotein (pp150) ; Intrathecal antibody synthesis ; Polymerase chain reaction
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract We evaluated 49 paired cerebrospinal fluid (CSF) and serum samples of 35 patients infected with the human immunodeficiency virus type 1 (HIV-1) for laboratory evidence of cytomegalovirus (CMV) infection. The patients were grouped according to clinical criteria as probable CMV encephalitis/polyradiculomyelitis, CMV retinitis, cerebral toxoplasmosis, progressive multifocal leukoencephalopathy, HIV-1-related cognitive/motor complex, HIV-1-associated myelopathy, and other neurological diseases. Paired CSF and serum samples were analysed for CMV deoxyribonucleic acid (DNA) by polymerase chain reaction (PCR), quantitative intrathecal synthesis of immunoglobulin G (IgG) antibodies specific for recombinant phosphoprotein 150 (pp150) of CMV and CMV-specific serum IgM. Intrathecal synthesis of pp150-specific IgG was detected in 26% of patients (9/35), serum IgM was found in 23% of patients (8/35), and PCR of CSF was positive in 11% of patients (4/35). Detection of CMV-specific DNA in CSF preceded the intrathecal antibody synthesis in three patients for whom serial samples were available. PCR results of the CSF became negative in one patient with CMV polyradiculomyelitis after successful therapy with 9-[2-hydroxy-l(hydroxymethyl) ethoxymethyl] guanine (DHPG). PCR has a higher diagnostic specificity in the acute phase of CMV infection than intrathecal antibody synthesis. The serum IgM response to CMV cannot be used to monitor a compartmentalized immune response in the central nervous system while an intrathecal immune response seems to be associated with recovery either spontaneously or as a result of treatment.
    Type of Medium: Electronic Resource
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  • 4
    ISSN: 1434-601X
    Keywords: 23.60 ; 21.10H ; 21.10M
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Theγ-radiation from the10B(n,γ) reaction is studied using an unpolarized target. More accurate values for energies of transitions in11B could be determined. No new levels have been found. TheQ value of this reaction: 11,454.1 (2)keV, is in agreement with earlier experiments. Also a new value for the cross section could be derived: 0.29 (4) barn, which is a factor 5 more accurate than earlier experiments. The10B(n, α)7 Li reaction, leading to the 478 keV state in7Li, is studied by means of polarized10B nuclei and polarized neutrons. The resulting anisotropy in the directional distribution of the7Li particles manifests itself in the Doppler broadening of the 478 keV line. Analysis of the line shape directly yields the conclusion, that the reaction proceeds for more than 96% through theJ=7/2 channel of11B in case of destructive channel interference of theJ=5/2 channel. Constructive channel interference is only possible if the reaction proceeds for more than 99.5% through theJ=7/2 channel. It appeared that the outcomingα and7Li particles are emitted predominantly in directions perpendicular to the nuclear orientation axis.
    Type of Medium: Electronic Resource
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