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Sökning: WFRF:(Gonçalo Margarida)

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1.
  • Baldaque-Silva, Francisco, et al. (författare)
  • Endoscopic assessment and grading of Barrett's esophagus using magnification endoscopy and narrow band imaging: Impact of structured learning and experience on the accuracy of the Amsterdam classification system
  • 2013
  • Ingår i: Scandinavian Journal of Gastroenterology. - : Taylor & Francis. - 1502-7708. ; 48:2, s. 160-167
  • Tidskriftsartikel (refereegranskat)abstract
    • Objective. Several classification systems have been launched to characterize Barrett's esophagus (BE) mucosa using magnification endoscopy with narrow band imaging (ME-NBI). The good accuracy and interobserver agreement described in the early reports were not reproduced subsequently. Recently, we reported somewhat higher accuracy of the classification developed by the Amsterdam group. The critical question then formulated was whether a structured learning program and the level of experience would affect the clinical usefulness of this classification. Material & methods: Two hundred and nine videos were prospectively captured from patients with BE using ME-NBI. From these, 70 were randomly selected and evaluated by six endoscopists with different levels of expertise, using a dedicated software application. First, an educational set was studied. Thereafter, the 70 test videos were evaluated. After classification of each video, the respective histological feedback was automatically given. Results. Within the learning process, there was a decrease in the time needed for evaluation and an increase in the certainty of prediction. The accuracy did not increase with the learning process. The sensitivity for detection of intestinal metaplasia ranged between 39% and 57%, and for neoplasia between 62% and 90%, irrespective of assessor's expertise. The kappa coefficient for the interobserver agreement ranged from 0.25 to 0.30 for intestinal metaplasia, and from 0.39 to 0.48 for neoplasia. Conclusion: Using a dedicated learning program, the ME-NBI Amsterdam classification system is suboptimal in terms of accuracy and inter- and intraobserver agreements. These results reiterate the questionable utility of corresponding classification system in clinical routine practice.
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2.
  • Johansen, Jeanne D, et al. (författare)
  • European Society of Contact Dermatitis guideline for diagnostic patch testing - recommendations on best practice.
  • 2015
  • Ingår i: Contact Dermatitis. - : Blackwell. - 0105-1873 .- 1600-0536. ; 73:4, s. 195-221
  • Forskningsöversikt (refereegranskat)abstract
    • The present guideline summarizes all aspects of patch testing for the diagnosis of contact allergy in patients suspected of suffering, or having been suffering, from allergic contact dermatitis or other delayed-type hypersensitivity skin and mucosal conditions. Sections with brief descriptions and discussions of different pertinent topics are followed by a highlighted short practical recommendation. Topics comprise, after an introduction with important definitions, materials, technique, modifications of epicutaneous testing, individual factors influencing the patch test outcome or necessitating special considerations, children, patients with occupational contact dermatitis and drug eruptions as special groups, patch testing of materials brought in by the patient, adverse effects of patch testing, and the final evaluation and patient counselling based on this judgement. Finally, short reference is made to aspects of (continuing) medical education and to electronic collection of data for epidemiological surveillance.
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3.
  • Ogueta, I. A., et al. (författare)
  • Limonene and linalool hydroperoxides review: Pros and cons for routine patch testing
  • 2022
  • Ingår i: Contact Dermatitis. - : Blackwell. - 0105-1873.
  • Tidskriftsartikel (refereegranskat)abstract
    • Limonene and linalool are among the most common fragrance terpenes used in everyday products. They are pre-haptens, forming hydroperoxides (Lim-OOHs, Lin-OOHs) upon oxidation and inducing frequent positive patch test reactions in patients with dermatitis, and yet they are not routinely tested in Europe. This review evaluates current patch testing with Lim-OOHs and Lin-OOHs by asking whether hydroperoxide patch testing is warranted, examining the difficulties or challenges related to reading and interpreting hydroperoxide patch test results with currently available material, and assessing their relevance. Studies are increasingly pointing to high percentages of positive reactions in patients consecutively patch tested with these oxidized products. An association between a positive clinical history and a strong patch test reaction has been described, but problems with doubtful/irritant reactions have also been reported. Considering the high frequency of relevant positive reactions, the incorporation of Lim-OOHs 0.3% and Lin-OOHs 1% in the baseline series may be justified. Since exposure, sensitization, and elicitation limits of Lim-OOHs and Lin-OOHs in the products still need to be better determined, an assessment of previous exposure, possible sensitizations, and reactions may help to improve the clinical assessment.
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4.
  • Agner, Tove, et al. (författare)
  • Contact sensitisation in hand eczema patients-relation to subdiagnosis, severity and quality of life: a multi-centre study
  • 2009
  • Ingår i: Contact Dermatitis. - : Blackwell. - 0105-1873. ; 61:5, s. 291-296
  • Tidskriftsartikel (refereegranskat)abstract
    • Background Contact sensitisation has been identified as a factor associated with poor prognosis for patients with hand eczema. Objectives To study implications of contact sensitisation with respect to severity, quality of life (QoL) and subdiagnosis of hand eczema. Methods The study was performed as a multi-centre, cross-sectional study from 10 European clinics. All patients were patch tested, and severity of hand eczema assessed by Hand Eczema Severity Index. A multi-variate analysis was performed to explore which factors influenced severity, QoL and sick leave. Results A total 416 patients were included, and 63% had contact sensitisation to one or more of the tested allergens. More women (66%) than men (51%) were sensitized. No significant association was found between sensitisation to specific allergens, disease severity, QoL or diagnostic subgroups. High age, male sex, atopic eczema and presence of contact sensitisation were independent risk factors for increased severity as measured by Hand Eczema Severity Index. Furthermore, the severity of hand eczema increased by the number of contact sensitisations detected (P = 0.023). High age and personal history of atopic eczema were independent risk factors for low QoL, as measured by Dermatology Life Quality Index, and atopic eczema as well as allergic contact dermatitis as subdiagnosis was associated with increased sick leave. Conclusion Diagnostic subgroups were not found to be related to specific allergens. Contact sensitisation was found to be a risk factor for increased severity of hand eczema, as did high age, male sex and atopic eczema.
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5.
  • Agner, Tove, et al. (författare)
  • Hand eczema severity and quality of life: a cross-sectional, multicentre study of hand eczema patients
  • 2008
  • Ingår i: Contact Dermatitis. - : Blackwell. - 0105-1873. ; 59:1, s. 43-47
  • Tidskriftsartikel (refereegranskat)abstract
    • Background and Objectives: Hand eczema is a chronic disease with negative impact on quality of life (QoL). In this study, QoL in hand eczema patients is assessed and related to age, sex, severity, and diagnostic subgroups. Methods: A total of 416 patients with hand eczema from 10 European patch test clinics participated in the study. Data on QoL were obtained from a self-administered questionnaire using the Dermatology Life Quality Index (DLQI). Severity was assessed by a scoring system (Hand Eczema Severity Index, HECSI) as well as frequency of eruptions and sick leave due to hand eczema. Results: No significant difference was found between males and females with respect to QoL [DLQI median values and 25/75 percentiles for males and females being 7.0 (3-14) and 8.0 (3-13), respectively], although males were more severely affected than females (P < 0.025). A significant positive correlation was found for hand eczema severity and age (P < 0.001), while no significant correlation was found for QoL and age. QoL was found increasingly reduced when sick leave was getting higher (P < 0.001). A statistically significant correlation between QoL (as measured by DLQI) and hand eczema severity as measured by HECSI was found (P < 0.001). No significant difference in QoL was found between diagnostic subgroups. Conclusions: QoL was found markedly negatively affected in hand eczema patients and was significantly correlated to disease severity. No significant difference in QoL was found between males and females, in spite of significantly more severe eczema in males, indicating that QoL in female patients is more easily affected.
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6.
  • Balato, Anna, et al. (författare)
  • European Task Force on Contact Dermatitis statement on coronavirus 19 disease (COVID-19) outbreak and the risk of adverse cutaneous reactions
  • 2020
  • Ingår i: Journal of the European Academy of Dermatology and Venereology. - : Elsevier. - 0926-9959. ; 34:8, s. 353-354
  • Tidskriftsartikel (refereegranskat)abstract
    • Among the basic protective measures against COVID-19, the need to wash hands frequently and in a prolonged way using soap, and to regularly use alcohol-based hand sanitizers is well established for the whole population. Healthcare workers in general, and particularly those involved in the direct care of COVID-19 patients, have to wear personal protective equipment (PPE) daily for many hours and also accomplish general preventive measurements outside their work. Cutaneous adverse reactions can develop that need to be prevented, identified and therapeutically managed. According to the data reported by Lin et al 1, based in the experience from healthcare workers in Wuhan, adverse skin reactions were reported in 74% of responders (n=376) to a general survey. The most commonly reported types of eruptions were skin dryness or desquamation (68.6%), papules or erythema (60.4%) and maceration (52,9%).
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7.
  • Bruze, Magnus, et al. (författare)
  • Contact Allergy to Fragrance Mix II and Hydroxyisohexyl 3-Cyclohexene Carboxaldehyde : A Retrospective Study by International Contact Dermatitis Research Group
  • 2020
  • Ingår i: Dermatitis : contact, atopic, occupational, drug. - : Lippincott Williams & Wilkins. - 1710-3568. ; 31:4, s. 268-271
  • Tidskriftsartikel (refereegranskat)abstract
    • BACKGROUND: Fragrance mix II (FM II) is included in the baseline patch test series recommended by the International Contact Dermatitis Research Group (ICDRG). Hydroxyisohexyl 3-cyclohexene carboxaldehyde (HICC) is the most important sensitizer of the 6 fragrance materials included in FM II. Besides being a part of FM II, HICC is also tested separately in the ICDRG baseline series. OBJECTIVES: The aim of the study was to investigate the prevalence of contact allergy to FM II and HICC in 2012-2016 with a focus on simultaneous reactions and the percentage of missed contact allergy to HICC provided that only FM II had been tested. PATIENTS AND METHODS: A total of 25,019 consecutive dermatitis patients in 13 dermatology clinics representing 12 countries in 5 continents were patch tested with FM II and HICC in the baseline series. RESULTS: Contact allergy to FM II and HICC was found in 3.9% and 1.6%, respectively. For FM II, the frequency varied from 1.5% to 7.6% in different centers. The corresponding range for HICC was 0.2% to 3.6%. Simultaneous contact allergy to FM II and HICC was noted in 1.4% with the range 0.2% to 2.6%. Seventy-seven patients (0.31%) with contact allergy to HICC did not test positively to FM II. The range for missed HICC allergy by testing only FM II in the different centers would be 0.04% to 0.74%. The ratio between the contact allergy rates for FM II and HICC was similar for all centers, except for Montreal having significantly more contact allergy to FM II than to HICC. CONCLUSIONS: The frequency of missed contact allergy to HICC when testing only with FM II was less than 0.5%, therefore questioning the need to test HICC separately in the ICDRG baseline series.
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10.
  • Bruze, Magnus, et al. (författare)
  • The significance of batch and patch test method in establishing contact allergy to fragrance mix I—EDEN Fragrance Study Group
  • 2019
  • Ingår i: Contact Dermatitis. - : Blackwell. - 0105-1873. ; 81:1, s. 104-109
  • Tidskriftsartikel (refereegranskat)abstract
    • Background: A fragrance mix consisting of eight separate fragrance ingredients (fragrance mix I [FM I]) is present in most baseline patch test series. Patch testing with the TRUE Test technique is considered to detect less contact allergy to FM I than testing with the Finn Chamber technique. Objective: To investigate the possible significance of batch and patch test method in establishing contact allergy to FM I. Methods: Three thousand one hundred and nineteen individuals representing a sample of the general population were patch tested with two batches of FM I with two patch test techniques at six dermatology clinics in five European countries. The TRUE Test technique and the Finn Chamber technique with pet. preparations were used. McNemar's test was used for statistical calculations. Results: The contact allergy prevalences varied between 0.7% and 2.6%. The patch tests with the mixes containing Evernia prunastri (oak moss) with a high content of chloratranol/atranol resulted in substantially more positive reactions than the corresponding tests with the mixes containing oak moss with a low content of chloratranol/atranol. The Finn Chamber technique detected significantly more contact allergic reactions than the TRUE Test technique (P < 0.001). Conclusion: The Finn Chamber technique detects more contact allergy to FM I than the TRUE Test technique.
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