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  • 1
    ISSN: 1432-1238
    Keywords: Key words Respiratory mechanics ; Monitor assessment ; Accuracy ; Interobserver agreement ; Ventilated child
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Objective: To evaluate a recently developed and manufactured device for monitoring respiratory parameters in mechanically ventilated children. Design: In vitro study using a lung model. Setting: University paediatric intensive care unit. Material and interventions: Evaluation of the accuracy of volume and pressure measurements, of the determination of respiratory system compliance (10 to 30 ml/cmH2O) and of resistance (20 and 50 cmH2O/l per s) by the inflation technique (volume- and pressure-controlled mode of ventilation); assessment of interobserver agreement for compliance (10, 15 ml/cmH2O) and resistance (20, 50 cmH2O/l per s) determinations (ANOVA, intraclass correlation coefficient). Measurements and results: The accuracy of volume measurements (No. 1 Fleisch pneumotachograph) was ≤ 5 % of true volumes up to 1 l (Flow: 30 l/min) even after the introduction of an endotracheal tube. The accuracy of pressure measurements up to 70 cmH2O was ≤ 2.5 % of the true values. Coefficients of variation of volume and pressure measurements were 〈 2 %. The accuracy of compliance and resistance determinations was, respectively, ≤ 17 and 25 % of the true values. No significant observer effect was found on compliance and resistance determinations. Indeed, mean differences in compliance and resistance determinations by pairs of observers were 〈 1 %. Intraclass correlation coefficients were 〉 0.98. Conclusions: The measuring error of volume, pressure, compliance and resistance determined using this monitoring system seems acceptable for monitoring purpose. Moreover, use of this system by members of the medical team can be recommended since results obtained by observers, even untrained ones, were similar. In vivo evaluation is now needed.
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 1432-1076
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Springer
    European journal of pediatrics 158 (1999), S. 81-81 
    ISSN: 1432-1076
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Type of Medium: Electronic Resource
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  • 4
    ISSN: 1432-1076
    Keywords: Key words Disseminated intra-vascular coagulation ; Limb ischaemia ; Purpura fulminans ; Septic shock ; Skin necrosis
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract More than 10% of children surviving septic shock with purpura have skin necrosis or limb ischaemia (SNLI.). Among 44 children consecutively admitted to our pediatric intensive care unit, 35 (80%) survived, 6 of them (17%) developed SNLI (defined as the need of a surgical procedure). Two timed haemostasis measurements included the determination of coagulation factors, protein C (PC), protein S (PS), C4b binding protein (C4bBP), antithrombin (AT), and plasminogen activator inhibitor 1 (PAI-1). Two severity scores and CRP levels were determined at admission. Children with SNLI and without SNLI were compared. On admission, severity scores, and AT, PC, PS, C4bBP levels were similar in both groups with and without SNLI. Prothrombin time (23% vs 34%; P 〈 0.01), factor VII+X (20% vs 31%; P = 0.05) and factor VII (0% vs 19%; P 〈 0.01) were lower in the group with SNLI. The 2nd sample showed no difference between the two groups. Kinetics of haemostatic abnormalities were no different between the two groups. Conclusion In this series, the only difference between the two groups was lower factor VII levels in children with skin necrosis or limb ischaemia. This suggests the benefit of tissue factor pathway inhibitor administration as an adjunctive therapy to prevent skin necrosis or limb ischaemia. Further studies including more children are needed to determine the potential effects of treatments such as protein C, antithrombin, and plasminogen activator inhibitor antibody administration, and to advocate tissue factor pathway inhibitor in preventing skin necrosis or limb ischaemia.
    Type of Medium: Electronic Resource
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  • 5
    ISSN: 1432-1076
    Keywords: Key words Latex allergy ; Spina bifida ; Fruit allergy ; Atopy
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Type 1 allergy against natural rubber latex is an increasing problem in health care workers and children with spina bifida or urogenital malformations. The aim of our study was to evaluate the prevalence of latex IgE antibodies and cross-reacting fruit antibodies in patients with spina bifida compared with atopic and non-atopic controls. Risk factors for sensitization should be determined. Sera of 148 patients with spina bifida and 98 controls (44 with atopy) were screened for IgE antibodies against latex, banana and kiwi by fluorescence enzyme immunoassay (CAP system). Atopies, allergic symptoms after latex contacts and the number of operations were compiled by a questionnaire. Patients with spina bifida developed latex IgE antibodies (≥0.7 kU/l) more frequently (40.5%) than atopic children (11.4%) or healthy controls (1.9%). All 18 symptomatic patients belonged to the spina bifida group and had high values of latex antibodies. The risk for developing latex antibodies increases with the number of operations. There was no difference in the history of atopic diseases and in a screening test of IgE antibodies against inhalative allergens between latex sensitized and not sensitized children with spina bifida. Antibodies against banana were more frequent in the latex sensitized children with spina bifida. (18.3% vs 3.4%, P = 0.002). Conclusion The high prevalence of latex antibodies in children with spina bifida justifies a primary prophylaxis by avoiding latex contacts, especially during anaesthesia and surgery, a correlation between the number of operations and the development of latex antibodies exists.
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    Amsterdam : Elsevier
    Physica B+C 80 (1975), S. 164-176 
    ISSN: 0378-4363
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Physics
    Type of Medium: Electronic Resource
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  • 7
    Electronic Resource
    Electronic Resource
    Oxford BSL : Blackwell Science Ltd
    Clinical & experimental allergy 28 (1998), S. 0 
    ISSN: 1365-2222
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Spina bifida patients are at a high risk of developing latex allergy. Recently, we found a relationship between the IgE responsiveness to latex allergen hevein and human leucocyte antigen (HLA) alleles DRB1*04 (DR4) as well as DQB1*0302 (DQ8). This study was carried out to investigate the association between HLA class II alleles and the specific IgE response to latex allergen Hev b 1 in spina bifida patients.〈section xml:id="abs1-2"〉〈title type="main"〉MethodsBlood samples from 103 unrelated German spina bifida patients exposed to latex products and from 90 unsensitized controls were examined. Genomic DNA isolation followed by HLA-D-specifc polymerase chain reaction (PCR) amplification was used to perform HLA typing of allelic polymorphisms in exon 2 of DQB1 and of DRB1,3,4,5 with sequence-specific oligonucleotide probes (SSOPs).〈section xml:id="abs1-3"〉〈title type="main"〉ResultsFifty-one out of 103 spina bifida patients were found to have anti-latex IgE antibodies; 40 had also anti-Hev b 1 antibodies. Further, we observed that 80% of the Hev b 1 responders underwent five or more surgeries whereas 55% of the Hev b 1 non-responders and 75% of the latex-non-responders underwent less than five surgical interventions. From the latex-sensitized group 33% showed an elevated phenotype frequency of DRB1*0701 (DR7) when compared with unsensitized patients (12%, P = 0.0095, Pc = NS) and with controls (17%; P = 0.035, Pc = ns). Fifteen out of 40 Hev b 1 responders also exhibited an elevated DR7 frequency when compared with latex-sensitive but Hev b 1-negative patients (38% vs 18%, P = NS) or with unsensitized controls (38% vs 17%, P = 0.013, Pc = NS).〈section xml:id="abs1-4"〉〈title type="main"〉ConclusionsAlthough we found that the DRB1*0701 (DR7) phenotype frequency was elevated in SB patients with latex- as well as with Hev b 1-IgE responsiveness, the analyses of the other class II alleles clearly demonstrate that the HLA-D region does not play a major role in the pathogenetic way of sensitization to Hev b 1.
    Type of Medium: Electronic Resource
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  • 8
    ISSN: 1398-9995
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Background: Class I chitinase in natural rubber latex (NRL) has been assumed to be an important allergen, especially concerning its cross-reactivity with fruits like avocado and banana.Objectives: The present study aimed to produce a recombinant latex class I chitinase from Hevea brasiliensis leaves and to study its immunoglobulin (Ig)E-binding reactivity.Methods: A class I chitinase-specific complementary DNA from H. brasiliensis leaves was synthesized, subcloned, sequenced and overexpressed in fusion with the maltose-binding protein (MBP) in Escherichia coli. The IgE-binding reactivity of this protein was studied by the Pharmacia CAP SystemTM and by immunoblot experiments using sera from latex-allergic patients.Results: The rHev b 11.0102 was found to have a length of 295 amino acid residues and contains an N-terminal hevein-like domain with a 56% homology to hevein. Analysis by the CAP method revealed the presence of rHev b 11.0102-specific IgE antibodies in 17 of 58 sera (29%) of IgE-mediated latex-allergic subjects tested. Immunoblot analysis of the MBP–rHev b 11.0102 fusion protein and the MBP carrier protein as a negative control confirmed the IgE-reactivity of rHev b 11.0102.Conclusion: Due to its IgE-reactivity rHev b 11.0102 represents an allergen of intermediate prevalence in NRL. Its property to cross-react with certain fruits makes it an important supplement in the diagnostic panel of recombinant NRL allergens.
    Type of Medium: Electronic Resource
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  • 9
    Electronic Resource
    Electronic Resource
    Copenhagen : Munksgaard International Publishers
    Allergy 56 (2001), S. 0 
    ISSN: 1398-9995
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Type of Medium: Electronic Resource
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  • 10
    Electronic Resource
    Electronic Resource
    Copenhagen : Munksgaard International Publishers
    Allergy 55 (2000), S. 0 
    ISSN: 1398-9995
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Background: Profilin (Hev b 8) in natural rubber latex (NRL) has been assumed to be an important allergen. Since latex profilin has a molecular mass similar to two other latex allergens (Hev b 1 and Hev b 6.03) in the 14-kDa range, it is difficult to obtain sufficient amounts of purified native profilin for investigations and diagnostics. The present study aimed to produce recombinant latex profilin (rHev b 8) and study its IgE-binding reactivity. Methods: A profilin-specific cDNA encoding the latex profilin from Hevea brasiliensis leaves was synthesized and subcloned, and the rHev b 8 was overexpressed in fusion with the maltose-binding protein (MBP) in E. coli. The IgE-binding reactivity of rHev b 8 was studied by immunoblotting, immunoblot inhibition experiments, and the Pharmacia CAP method, with 25 sera from health-care workers with latex allergy and 17 sera from latex-sensitive spina bifida patients. Results: rHev b 8 was found to have 131 amino acids and a sequence identity of 75% with birch profilin (Bet v 2). Analysis by the CAP system revealed the presence of rHev b 8-specific IgE antibodies in two out of 17 sera from spina bifida patients and in five out of 25 sera (20%) from health-care workers. Two subjects of the latter group with rHev b 8-specific IgE showed negative results in the skin prick tests with tree-pollen extracts and had no IgE to rBet v 2, indicating the presence of IgE-binding epitopes on the Hev b 8-molecule which do not cross-react with birch profilin. Immunoblot inhibition assays using MBP-rHev b 8 as inhibitor confirmed the presence of latex profilin in the NRL extract. IgE binding to the native latex profilin could be completely inhibited by the MBP-rHev b 8. Conclusions: Latex profilin represents a minor allergen in NRL and may have IgE-binding epitopes different from Bet v 2.
    Type of Medium: Electronic Resource
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