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1.
Wien Klin Wochenschr ; 2024 May 14.
Artigo em Inglês | MEDLINE | ID: mdl-38743140

RESUMO

BACKGROUND: The Broström procedure is an established procedure in cases of primary lateral ankle ligament repair (LALR). To improve postoperative stability an augmentation device, InternalBrace™ (Arthrex, Naples, FL) has been introduced. This study evaluates remodelling of the anterior talofibular ligament (ATFL) in patients undergoing a tape augmented Broström technique as well as clinical outcomes. METHODS: In this study 32 patients with chronic lateral ankle instability (CLAI) receiving augmented LALR were included. Clinical outcomes were evaluated at a one-time postoperative visit between 12 and 18 months. A 3 T magnetic resonance imaging (MRI) was done to evaluate the morphology of the ATFL. Statistical analysis was completed with the free software and environment R version 3.6.3 (Bell Laboratories, Murray Hill, NJ, USA) and P-values < 0.05 were considered statistically significant. RESULTS: The mean follow-up time was 15.3 ± 1.8 months with a return to sport time of 4.0 ± 2.4 months. The average AOFAS (American Orthopaedic Foot and Ankle Society Score) score was 94.4 ± 7.2, the FAOS (Foot and Ankle Outcome Score) demonstrated 87.3 ± 10.4 points and the FFI (Foot Function Index - 2 scores (pain and function score)) was 22.9 ± 20.1 and 15.4 ± 10.4, respectively. The MRI findings demonstrated an average length of the ATFL of 18.6 ± 4.3 mm and the width was 3.6 ± 0.9 mm. A clear differentiation between the ATFL and the augmentation device could be shown in 28 cases. The Fisher's exact test could not depict a significant correlation between the presence of a bone marrow edema and the tension of the augmentation device with a level of significance of α = 0.05. CONCLUSION: An anatomical healing tendency of the ligament repair and good integrity of the augmentation device could be shown based on MRI findings. The lateral ligament repair augmented with suture tape is an effective and safe procedure regarding surgical treatment in chronic lateral ankle instability producing good clinical outcome.

2.
BMC Ophthalmol ; 24(1): 185, 2024 Apr 23.
Artigo em Inglês | MEDLINE | ID: mdl-38654214

RESUMO

PURPOSE: The present study tested the hypothesis that repeated anti-VEGF injections are associated with reduced retinal nerve fiber layer (RNFL) and minimum rim width (MRW) of the optic nerve head. PATIENTS AND METHODS: Sixty-six patients with a history of intravitreal injections due to neovascular age-related macular degeneration were included. RNFL and MRW were measured using optical coherence tomography (Spectralis OCT, Heidelberg Engineering, Heidelberg, Germany). RESULTS: Mean global RNFL was 90.62 µm and both RNFL as well as MRW significantly decreased with advanced age (p = 0.005 and p = 0.019, respectively). Correlating for the number of injections, no significant impact on RNFL was found globally (p = 0.642) or in any of the sectors. In contrast, however, global MRW was significantly reduced with increasing numbers of intravitreal injections (p = 0.012). The same holds true when adjusted for the confounding factor age (RNFL p = 0.566 and MRW p = 0.023). CONCLUSION: Our study shows that repeated intravitreal injections due to choroidal neovascularization seem to have a deleterious effect on MRW but not on RNFL. This suggests that MRW is a more sensitive marker than RNFL for evaluating the effect of frequent intravitreal injections on the optic nerve head since it seems to be the first structure affected.


Assuntos
Inibidores da Angiogênese , Injeções Intravítreas , Fibras Nervosas , Células Ganglionares da Retina , Tomografia de Coerência Óptica , Humanos , Estudos Transversais , Masculino , Feminino , Idoso , Tomografia de Coerência Óptica/métodos , Inibidores da Angiogênese/administração & dosagem , Fibras Nervosas/patologia , Células Ganglionares da Retina/patologia , Idoso de 80 Anos ou mais , Disco Óptico/patologia , Pessoa de Meia-Idade , Fator A de Crescimento do Endotélio Vascular/antagonistas & inibidores , Degeneração Macular Exsudativa/tratamento farmacológico , Degeneração Macular Exsudativa/diagnóstico , Acuidade Visual , Ranibizumab/administração & dosagem , Bevacizumab/administração & dosagem
3.
Graefes Arch Clin Exp Ophthalmol ; 262(1): 103-111, 2024 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-37428221

RESUMO

PURPOSE: To aid preoperative risk assessment by identifying anatomic parameters corresponding with a higher risk of intraoperative floppy iris syndrome (IFIS) during cataract surgery. METHODS: Prospective cohort study of 55 patients with α1-adrenergic receptor antagonist (α1-ARA) treatment and 55 controls undergoing cataract surgery. Anterior segment optical coherence tomography (AS-OCT), video pupilometer, and biometry measurements were performed preoperatively and analyzed regarding anatomic parameters that corresponded with a higher rate of IFIS. Those statistically significant parameters were evaluated with logistic regression analysis and receiver operating characteristic (ROC) curve. RESULTS: Pupil diameter was significantly smaller in patients who developed IFIS compared to those who did not develop IFIS (AS-OCT 3.29 ± 0.85 vs. 3.63 ± 0.68, p = 0.03; Pupilometer 3.56 ± 0,87 vs. 3.95 ± 0.67, p = 0.02). Biometric evaluation revealed shallower anterior chambers in the IFIS group (ACD 3.12 ± 0.40 vs. 3.32 ± 0.42, p = 0.02). Cutoff values for 50% IFIS probability (p = 0.5) were PD = 3.18 mm for pupil diameter and ACD = 2.93 mm for anterior chamber depth. ROC curves of combined parameters were calculated for α1-ARA medication with pupil diameter and anterior chamber depth, which yielded an AUC of 0.75 for all IFIS grades. CONCLUSION: The combination of biometric parameters with history of α1-ARA medication can improve assessment of risk stratification for IFIS incidence during cataract surgery.


Assuntos
Catarata , Doenças da Íris , Facoemulsificação , Humanos , Tansulosina , Estudos Prospectivos , Sulfonamidas , Facoemulsificação/efeitos adversos , Antagonistas de Receptores Adrenérgicos alfa 1/efeitos adversos , Doenças da Íris/induzido quimicamente , Doenças da Íris/diagnóstico , Iris , Catarata/complicações , Complicações Intraoperatórias/diagnóstico
4.
J Reprod Immunol ; 161: 104183, 2024 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-38154434

RESUMO

This study evaluated the effects of urogenital pathogens on standard semen parameters, sperm kinematics and host inflammatory response in a cohort of asymptomatic subfertile men. There were six groups based on the results of bacterial culture, including Ureaplasma urealyticum (U. Urealyticum) (n = 27), mixed comprising two or more pathogenic species (n = 28), Gardnerella Vaginalis (G. Vaginalis) (n = 15), gram-positive cocci and bacilli (g+cocci/bacilli) (n = 15), gram-negative bacilli (g-bacilli) (n = 10) and Chlamydia trachomatis (C. trachomatis) (n = 2). One control group (n = 20) and one leukocytospermic group (n = 10) were also included. Sperm quality parameters, seminal leukocytes and interleukin (IL)-6 of all groups, apart from C. trachomatis, were compared to the control group. Standard semen parameters were significantly worse in all groups except for that with g-bacilli. Progressive motility, total motility and normal sperm morphology demonstrated the most significant differences, when U. Urealyticum, leukocytospermia and mixed pathogens were detected in semen. Among sperm kinematics, the concentration of progressive motile sperm cells (CPMS), the percentage of progressive motile sperm cells (PPMS) and straightness (STR) were manifested significant declines in the presence of seminal pathogens. CPMS was affected in all groups except for G. vaginalis. Moreover, the presence of g+cocci/bacilli and g-bacilli were associated with increased seminal IL-6. Seminal leukocytes were elevated significantly only when g-bacilli were cultured in semen. We conclude that seminal pathogens can negatively affect sperm quality. The most negative effect is related to U. Urealyticum. Moreover, g+cocci/bacilli and g-bacilli can initiate an inflammatory response.


Assuntos
Clorobenzenos , Infertilidade Masculina , Sêmen , Sulfetos , Humanos , Masculino , Fenômenos Biomecânicos , Infertilidade Masculina/microbiologia , Espermatozoides/patologia , Motilidade dos Espermatozoides
5.
Heliyon ; 9(11): e22112, 2023 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-38034696

RESUMO

Background: Cycle threshold (Ct) values from SARS-CoV-2 nucleic acid amplification tests have been used to estimate viral load for treatment decisions. Additionally, there is a need for high-throughput testing, consolidating a variety of assays on one random-access analyzer. Objectives: In this study, the clinical performance of the Alinity m SARS-CoV-2, RealTime SARS-CoV-2, and GeneXpert Xpress SARS-CoV-2/Flu/RSV assays was assessed. Methods: Alinity precision and detection rates were evaluated using a dilution series of the Alinity m SARS-CoV-2 positive control. In a retrospective study, 7 remnant external quality assessment (EQA) specimens and 200 remnant nasopharyngeal swab specimens (100 positive and 100 negative) were tested in the three assays. Results: Alinity had 100 % detection rate at 50 copies/mL and high reproducibility (Ct value coefficient of variation ≤3.1 %). All three assays correctly detected positive and negative EQA samples with comparable Ct values (max difference 2.38) and high linearity. In patient samples, positive percent agreement was 95 % (95 % CI 89-98 %) and negative percent agreement was 100 % (95 % CI 96-100 %) for Alinity, compared to the other two assays. Four specimens detected on Alinity m but not RealTime or Xpert had Ct values above 40. Assay results were highly correlated (r ≥ 0.94). Ct values (after addition of 10 unread cycles to the reported Ct of RealTime) were comparable across the three assays. Conclusions: Alinity m had high precision and accuracy and Ct values comparable to those of the RealTime and Xpert assays. The assays could be used interchangeably, with no need for adjustment of patient management decisions based on Ct values from each assay.

6.
Lancet Microbe ; 4(12): e1015-e1023, 2023 12.
Artigo em Inglês | MEDLINE | ID: mdl-37979591

RESUMO

BACKGROUND: The aim of external quality assessment (EQA) schemes is to evaluate the analytical performance of laboratories and test systems in a near-to-real-life setting. This monitoring service provides feedback to participant laboratories and serves as a control measure for the epidemiological assessment of the regional incidence of a pathogen, particularly during epidemics. Using data from EQA schemes implemented as a result of the intensive effort to monitor SARS-CoV-2 infections in Austria, we aimed to identify factors that explained the variation in laboratory performance for SARS-CoV-2 detection over the course of the COVID-19 pandemic. METHODS: For this observational study, we retrospectively analysed 6308 reverse transcriptase quantitative PCR (RT-qPCR) test results reported by 191 laboratories on 71 samples during 14 rounds of three SARS-CoV-2 pathogen detection EQA schemes in Austria between May 18, 2020, and Feb 20, 2023. We calculated the overall rates of false and true-negative, false and true-positive, and inconclusive results. We then assessed laboratory performance by estimating the sensitivity by testing whether significant variation in the odds of obtaining a true-positive result could be explained by virus concentration, laboratory type, or assay format. We also assessed whether laboratory performance changed over time. FINDINGS: 4371 (93·7%) of 4663 qPCR test results were true-positive, 241 (5·2%) were false-negative, and 51 (1·1%) were inconclusive. The mean per-sample sensitivity was 99·7% in samples with high virus concentrations (1383 [99·4%] true-positive, three [0·2%] false-negative, and five [0·4%] inconclusive results for 1391 tests in which the sample cycle threshold was ≤32), whereas detection rates were lower in samples with low virus concentrations (mean per-sample sensitivity 92·5%; 2988 [91·3%] true-positive, 238 [7·3%] false-negative, and 46 [1·4%] inconclusive results for 3272 tests in which the cycle threshold was >32). Of the 1645 results expected to be negative, 1561 (94·9%) were correctly reported as negative, 10 (0·6%) were incorrectly reported as positive, and 74 (4·5%) were reported as inconclusive. Notably, the overall performance of the tests did not change significantly over time. The odds of reporting a correct result were 2·94 (95% CI 1·75-4·96) times higher for a medical laboratory than for a non-medical laboratory, and 4·60 (2·91-7·41) times greater for automated test systems than for manual test systems. Automated test systems within medical laboratories had the highest sensitivity when compared with systems requiring manual intervention in both medical and non-medical laboratories. INTERPRETATION: High rates of false-negativity in all PCR analyses evaluated in comprehensive, multiple, and repeated EQA schemes outline a clear path for improvement in the future. The performance of some laboratories (eg, non-medical laboratories or those using non-automated test systems) should receive additional scrutiny-for example, by requiring additional EQA schemes for certification or accreditation-if the aggregated data from EQA rounds suggest lower sensitivity than that recorded by others. This strategy will provide assurances that epidemiological data as a whole are reliable when testing on such a large scale. Although performance did not improve over time, we cannot exclude extenuating circumstances-such as shortages and weakened supply chains-that could have prevented laboratories from seeking alternative methods to improve performance. FUNDING: None.


Assuntos
COVID-19 , Ácidos Nucleicos , Humanos , COVID-19/diagnóstico , COVID-19/epidemiologia , SARS-CoV-2/genética , Estudos Retrospectivos , Pandemias , Áustria/epidemiologia
7.
Lancet Microbe ; 4(7): e552-e562, 2023 07.
Artigo em Inglês | MEDLINE | ID: mdl-37156257

RESUMO

During an epidemic, individual test results form the basis of epidemiological indicators such as case numbers or incidence. Therefore, the accuracy of measures derived from these indicators depends on the reliability of individual results. In the COVID-19 pandemic, monitoring and evaluating the performance of the unprecedented number of testing facilities in operation, and novel testing systems in use, was urgently needed. External quality assessment (EQA) schemes are unique sources of data reporting on testing performance, and their providers are recognised contacts and support for test facilities (for technical-analytical topics) and health authorities (for planning the monitoring of infection diagnostics). To identify information provided by SARS-CoV-2 genome detection EQA schemes that is relevant for public health microbiology, we reviewed the current literature published in PubMed between January, 2020, and July, 2022. We derived recommendations for EQA providers and their schemes for best practices to monitor pathogen-detection performance in future epidemics. We also showed laboratories, test facilities, and health authorities the information and benefits they can derive from EQA data, and from the non-EQA services of their providers.


Assuntos
COVID-19 , Pandemias , Humanos , Reprodutibilidade dos Testes , SARS-CoV-2/genética , COVID-19/diagnóstico , COVID-19/epidemiologia , Laboratórios
8.
Artigo em Inglês | MEDLINE | ID: mdl-36767279

RESUMO

(1) Background: The Second Victim Phenomenon (SVP) is widespread throughout health care institutions worldwide. Second Victims not only suffer emotional stress themselves; the SVP can also have a great financial and reputational impact on health care institutions. Therefore, we conducted a study (Kollegiale Hilfe I/KoHi I) in the Hietzing Clinic (KHI), located in Vienna, Austria, to find out how widespread the SVP was there. (2) Methods: The SeViD (Second Victims in Deutschland) questionnaire was used and given to 2800 employees of KHI, of which 966 filled it in anonymously. (3) Results: The SVP is prevalent at KHI (43% of the participants stated they at least once suffered from SVP), although less prevalent and pronounced than expected when compared to other studies conducted in German-speaking countries. There is still a need for action, however, to ensure a psychologically safer workspace and to further prevent health care workers at KHI from becoming psychologically traumatized.


Assuntos
Pessoal de Saúde , Hospitais , Humanos , Áustria/epidemiologia , Pessoal de Saúde/psicologia , Ansiedade , Instalações de Saúde
9.
J Clin Virol ; 158: 105352, 2023 01.
Artigo em Inglês | MEDLINE | ID: mdl-36525853

RESUMO

BACKGROUND: The detection of SARS-CoV-2 vRNA in clinical samples has relied almost exclusively on RT-qPCR as the gold standard test. Published results from various external quality assessments ("ring trials") worldwide have shown that there is still a large variability in results reported for the same samples. As reference standards of SARS-CoV-2 RNA are available, we tested whether using standard curves to convert Ct values into copies/mL (cp/mL) improved harmonization. METHODS: Nine laboratories using 23 test systems (15 of which were unique) prepared standard dilution curves to convert Ct values of 13 SARS-CoV-2 positive samples to cp/mL (hereafter IU/mL). The samples were provided in three rounds of a virus genome detection external quality assessment (EQA) scheme. We tested the precision and accuracy of results reported in IU/mL, and attempted to identify the sources of variability. RESULTS: Reporting results as IU/mL improved the precision of the estimated concentrations of all samples compared to reporting Ct values, although some inaccuracy remained. Variance analysis showed that nearly all variability in data was explained by individual test systems within individual laboratories. When controlling for this effect, there was no significant difference between all other factors tested (test systems, EQA rounds, sample material). CONCLUSIONS: Converting results to copies/mL improved precision across laboratory test systems. However, it seems the results are still very specific to test systems within laboratories. Further efforts could be made to improve accuracy and achieve full harmonization across diagnostic laboratories.


Assuntos
COVID-19 , SARS-CoV-2 , Humanos , SARS-CoV-2/genética , COVID-19/diagnóstico , RNA Viral/genética , RNA Viral/análise , Teste para COVID-19 , Laboratórios , Sensibilidade e Especificidade
10.
Nutrients ; 14(15)2022 Jul 28.
Artigo em Inglês | MEDLINE | ID: mdl-35956281

RESUMO

Preterm birth places infants at high risk for mineral and micronutrient deficiencies important for bone health. The aim of this study was to examine whether two timepoints for the introduction of solid foods in preterm infants have an impact on vitamin D status in the first year of life. This is a secondary outcome analysis of a prospective, randomized trial on very low birth weight (VLBW) infants, randomized to an early (10-12th week corrected age) or a late (16-18th week corrected age) complementary-feeding group. Vitamin D status was assessed by blood samples taken at 6 weeks, 6, and 12 months corrected age. In total, 177 infants were randomized (early group: n = 89, late group: n = 88). There was a tendency toward lower levels of serum 25-OH-vitamin D in the early group throughout the first year of life (p = not significant (n.s.)); no differences were detected in the other parameters. At 6 months corrected age, infants of the early group had a significantly higher incidence of vitamin D deficiency. The timepoint of the introduction of solid foods had no impact on the serum 25-OH-vitamin D levels and other parameters important for bone health but showed a tendency toward lower levels in the early-feeding group.


Assuntos
Nascimento Prematuro , Deficiência de Vitamina D , Feminino , Humanos , Lactente , Recém-Nascido , Recém-Nascido Prematuro , Estudos Prospectivos , Vitamina D , Deficiência de Vitamina D/epidemiologia , Vitaminas
11.
Nutrients ; 14(13)2022 Jun 30.
Artigo em Inglês | MEDLINE | ID: mdl-35807912

RESUMO

Introduction of solid foods and iron status in the first year of life of preterm infants are highly discussed topics. The aim of this study was to examine whether two timepoints of introduction of standardized solid foods in preterm infants have an impact on ferritin and other hematologic parameters important for iron status in the first year of life. This is a secondary outcome analysis of a prospective, randomized intervention trial in very low birth weight (VLBW) infants randomized to an early (10-12th week corrected age) or a late (16-18th week corrected age) complementary feeding group. Iron status was assessed with blood samples taken at 6 weeks, 6 months, and 12 months corrected age. In total, 177 infants were randomized (early group: n = 89, late group: n = 88). Ferritin showed no differences between study groups throughout the first year of life, as did all other parameters associated with iron status. At 12 months corrected age, the incidence of iron deficiency was significantly higher in the early feeding group. There is room for improvement of iron status in VLBW preterm infants, regular blood checks should be introduced, and current recommendations may need to be a reconsidered.


Assuntos
Recém-Nascido Prematuro , Ferro , Ferritinas , Humanos , Lactente , Fenômenos Fisiológicos da Nutrição do Lactente , Recém-Nascido , Estudos Prospectivos
12.
Clin Chem Lab Med ; 60(6): 830-841, 2022 05 25.
Artigo em Inglês | MEDLINE | ID: mdl-35344647

RESUMO

OBJECTIVES: Medical laboratory performance is a relative concept, as are quality and safety in medicine. Therefore, repetitive benchmarking appears to be essential for sustainable improvement in health care. The general idea in this approach is to establish a reference level, upon which improvement may be strived for and quantified. While the laboratory community traditionally is highly aware of the need for laboratory performance and public scrutiny is more intense than ever due to the SARS-CoV-2 pandemic, few initiatives span the globe. The aim of this study was to establish a good practice approach towards benchmarking on a high abstraction level for three key dimensions of medical laboratory performance, generate a tentative snapshot of the current state of the art in the region of Europe, Middle East, and Africa (EMEA), and thus set the stage for global follow-up studies. METHODS: The questionnaire used and previously published in this initiative consisted of 50 items, roughly half relating to laboratory operations in general with the other half addressing more specific topics. An international sample of laboratories from EMEA was approached to elicit high fidelity responses with the help of trained professionals. Individual item results were analyzed using standard descriptive statistics. Dimensional reduction of specific items was performed using exploratory factor analysis and assessed with confirmatory factor analysis, resulting in individual laboratory scores for the three subscales of "Operational performance", "Integrated clinical care performance", and "Financial sustainability". RESULTS: Altogether, 773 laboratories participated in the survey, of which 484 were government hospital laboratories, 129 private hospital laboratories, 146 commercial laboratories, and 14 were other types of laboratories (e.g. research laboratories). Respondents indicated the need for digitalization (e.g. use of IT for order management, auto-validation), automation (e.g. pre-analytics, automated sample transportation), and establishment of formal quality management systems (e.g. ISO 15189, ISO 9001) as well as sustainably embedding them in the fabric of laboratory operations. Considerable room for growth also exists for services provided to physicians, such as "Diagnostic pathways guidance", "Proactive consultation on complex cases", and "Real time decision support" which were provided by less than two thirds of laboratories. Concordantly, the most important kind of turn-around time (TAT) for clinicians, sample-to-result TAT, was monitored by only 40% of respondents. CONCLUSIONS: Altogether, the need for stronger integration of laboratories into the clinical care process became apparent and should be a main trajectory of future laboratory management. Factor analysis confirmed the theoretical constructs of the questionnaire design phase, resulting in a reasonably valid tool for further benchmarking activities on the three aimed-for key dimensions.


Assuntos
COVID-19 , Laboratórios Hospitalares , Benchmarking , COVID-19/diagnóstico , Europa (Continente) , Humanos , Laboratórios , SARS-CoV-2 , Inquéritos e Questionários
13.
Sci Rep ; 12(1): 2872, 2022 02 21.
Artigo em Inglês | MEDLINE | ID: mdl-35190590

RESUMO

Several systemic factors indicate that worldwide herd immunity against COVID-19 will probably not be achieved in 2021. On the one hand, vaccination programs are limited by availability of doses and on the other hand, the number of people already infected is still too low to have a disease preventing impact and new emerging variants of the virus seem to partially neglect developed antibodies from previous infections. Nevertheless, by February 2021 after one year of observing high numbers of reported COVID-19 cases in most European countries, we might expect that the immunization level should have an impact on the spread of SARS-CoV-2. Here we present an approach for estimating the immunization of the Austrian population and discuss potential consequences on herd immunity effects. To estimate immunization we use a calibrated agent-based simulation model that reproduces the actual COVID-19 pandemic in Austria. From the resulting synthetic individual-based data we can extract the number of immunized persons. We then extrapolate the progression of the epidemic by varying the obtained level of immunization in simulations of an hypothetical uncontrolled epidemic wave indicating potential effects on the effective reproduction number. We compared our theoretical findings with results derived from a classic differential equation SIR-model. As of February 2021, [Formula: see text] of the Austrian population has been affected by a SARS-CoV-2 infection which causes a [Formula: see text] reduction of the effective reproduction number and a [Formula: see text] reduction of the prevalence peak compared to a fully susceptible population. This estimation is now recomputed on a regular basis to publish model based analysis of immunization level in Austria also including the fast growing effects of vaccination programs. This provides substantial information for decision makers to evaluate the necessity of non pharmaceutical intervention measures based on the estimated impact of natural and vaccinated immunization.


Assuntos
Vacinas contra COVID-19/uso terapêutico , COVID-19/epidemiologia , COVID-19/prevenção & controle , Imunidade Coletiva , Modelos Estatísticos , Pandemias/prevenção & controle , SARS-CoV-2/imunologia , Vacinação/métodos , Anticorpos Antivirais/imunologia , Áustria/epidemiologia , COVID-19/imunologia , COVID-19/virologia , Vacinas contra COVID-19/imunologia , Humanos , Incidência
14.
Ophthalmol Retina ; 6(9): 753-761, 2022 09.
Artigo em Inglês | MEDLINE | ID: mdl-35202889

RESUMO

PURPOSE: To develop a consensus nomenclature for reporting OCT angiography (OCTA) findings in retinal vascular disease (e.g., diabetic retinopathy, retinal vein occlusion) by international experts. DESIGN: Delphi-based survey. SUBJECTS, PARTICIPANTS, AND/OR CONTROLS: Twenty-five retinal vascular disease and OCTA imaging experts. METHODS, INTERVENTION, OR TESTING: A Delphi method of consensus development was used, comprising 2 rounds of online questionnaires, followed by a face-to-face meeting conducted virtually. Twenty-five experts in retinal vascular disease and retinal OCTA imaging were selected to constitute the OCTA Nomenclature in Delphi Study Group for retinal vascular disease. The 4 main areas of consensus were: definition of the parameters of "wide-field (WF)" OCTA, measurement of decreased vascular flow on conventional and WF-OCTA, nomenclature of OCTA findings, and OCTA in retinal vascular disease management and staging. The study end point was defined by the degree of consensus for each question: "strong consensus" was defined as ≥85% agreement, "consensus" as 80% to 84%, and "near consensus" as 70% to 79%. MAIN OUTCOME MEASURES: Consensus and near consensus on OCTA nomenclature in retinal vascular disease. RESULTS: A consensus was reached that a meaningful change in percentage of flow on WF-OCTA imaging should be an increase or decrease ≥30% of the absolute imaged area of flow signal and that a "large area" of WF-OCTA reduced flow signal should also be defined as ≥30% of the absolute imaged area. The presence of new vessels and intraretinal microvascular abnormalities, the foveal avascular zone parameters, the presence and amount of "no-flow areas," and the assessment of vessel density in various retinal layers should be added for the staging and classification of diabetic retinopathy. Decreased flow ≥30% of the absolute imaged area should define an ischemic central retinal vein occlusion. Several other items did not meet consensus requirements or were rejected in the final discussion round. CONCLUSIONS: This study provides international consensus recommendations for reporting OCTA findings in retinal vascular disease, which may help to improve the interpretability and description in clinic and clinical trials. Further validation in these settings is warranted and ongoing. Efforts are continuing to address unresolved questions.


Assuntos
Retinopatia Diabética , Doenças Retinianas , Oclusão da Veia Retiniana , Retinopatia Diabética/diagnóstico , Angiofluoresceinografia/métodos , Humanos , Doenças Retinianas/diagnóstico , Oclusão da Veia Retiniana/diagnóstico , Vasos Retinianos , Tomografia de Coerência Óptica/métodos
15.
Clin Chem Lab Med ; 60(3): 361-369, 2022 02 23.
Artigo em Inglês | MEDLINE | ID: mdl-35041777

RESUMO

OBJECTIVES: Medical laboratories may, at their own discretion, exceed but not undercut regulatory quality requirements. Available economic resources, however, may drive or hinder eagerness to exceed minimum requirements. Depending on the respective scopes of regulatory and economic framework conditions, differing levels of quality efforts to safeguard laboratory performance can be anticipated. However, this has not yet been investigated. METHODS: Immunohaematology external quality assessment (EQA) results collected by 26 EQA providers from their participant laboratories in 73 countries from 2004 to 2019 were evaluated. Error rates were aggregated in groups according to the respective national regulatory and economic framework conditions, to whether or not expert advice was provided in case of incorrect results, and the frequency of EQA samples. RESULTS: These representative data indicate no association between national regulatory (mandatory participation in EQA, monitoring of performance of individual laboratories by authorities, financial consequences of incorrect results) and economic (level of national income, share of national health expenditure) conditions to the quality performance of medical laboratories in immunohaematology. However, EQA providers' support for laboratories in the event of incorrect results appear to be associated with lower error rates, but a high EQA sample frequency with higher error rates. CONCLUSIONS: Further research into the impact of introducing or changing services of EQA providers is needed to confirm the results found in this first of its kind study.


Assuntos
Hematologia , Laboratórios , Humanos , Garantia da Qualidade dos Cuidados de Saúde
16.
Wien Klin Wochenschr ; 134(3-4): 174-181, 2022 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-34709471

RESUMO

BACKGROUND AND AIMS: The need for patient safety through consistent diagnostic performance has increasingly been brought into focus during the last two decades. Around the globe operational efficiency of diagnostic laboratories plays a key role in satisfying this need, which has impressively been shown during the recent months of the SARS-CoV­2 pandemic. On a global level, however, there has been a lack to collate and benchmark data for diagnostic laboratories. The goals of this study were to design and pilot a questionnaire addressing key aspects of diagnostic laboratory management. METHODS: The questionnaire was designed using an iterative process and taking into consideration information that could be extracted from the literature, author experience and feedback from informal focus groups of laboratory professionals. The resulting tool consisted of 50 items, either relating to general information or more specifically addressing the topics of "operational performance", "integrated clinical care performance", and "financial sustainability". A limited number of laboratories were surveyed to be able to further improve the newly developed tool and motivate the global laboratory community to participate in further benchmarking activity. RESULTS AND CONCLUSION: Altogether, 65 laboratories participated in the survey, 42 were hospital laboratories and 23 were commercial laboratories. Potential for further improvement and standardization became apparent across the board, e.g. use of IT for order management, auto-validation, or turn-around time (TAT) monitoring. Notably, a gap was identified regarding services provided to physicians, in particular "reflexive test suggestions", "proactive consultation on complex cases", and "diagnostic pathways guidance", which were only provided by about two thirds of laboratories. Concordantly, within-laboratory TAT (Lab TAT) was monitored by about 80% of respondents, while sample-to-result TAT, which is arguably the TAT most relevant to clinicians, was only monitored by 32% of respondents. Altogether, the need for stronger integration of the laboratory into the clinical care process became apparent and should be a main trajectory of future laboratory management.


Assuntos
COVID-19 , Laboratórios , Áustria , Benchmarking , Alemanha , Humanos , SARS-CoV-2 , Inquéritos e Questionários , Suíça
18.
Front Public Health ; 9: 630398, 2021.
Artigo em Inglês | MEDLINE | ID: mdl-34604148

RESUMO

A version of the Institute for Safe Medication Practices (ISMP) questionnaire adapted to the Austrian inpatient setting was used to sample the estimates of a group of experts regarding the level of medication safety in a level II hospital. To synthesize expert opinions on a group level reproducibly, classical Delphi method elements were combined with an item weight and performance weight decision-maker. This newly developed information synthesis method was applied to the sample dataset to examine method applicability. Method descriptions and flow diagrams were generated. Applicability was then tested by creating a synthesis of individual questionnaires. An estimate of the level of medication safety in an Austrian level II hospital was, thus, generated. Over the past two decades, initiatives regarding patient safety, in general, and medication safety, in particular, have been gaining momentum. Questionnaires are state of the art for assessing medication practice in healthcare facilities. Acquiring consistent data about medication in the complex setting of a hospital, however, has not been standardized. There are no publicly available benchmark datasets and, in particular, there is no published method to reliably synthesize expertise regarding medication safety on an expert group level. The group-level information synthesis method developed in this study has the potential to synthesize information about the level of medication safety in a hospital setting more reliably than unstructured approaches. A medication safety level estimate for a representative Austrian level II hospital was generated. Further studies are needed to establish convergence characteristics and benchmarks for medication safety on a larger scale.


Assuntos
Hospitais , Segurança do Paciente , Consenso , Técnica Delphi , Humanos , Inquéritos e Questionários
19.
Clin Chem Lab Med ; 59(10): 1735-1744, 2021 09 27.
Artigo em Inglês | MEDLINE | ID: mdl-34187131

RESUMO

OBJECTIVES: External quality assessment (EQA) schemes provide information on individual and general analytical performance of participating laboratories and test systems. The aim of this study was to investigate the use and performance of SARS-CoV-2 virus genome detection systems in Austrian laboratories and their preparedness to face challenges associated with the pandemic. METHODS: Seven samples were selected to evaluate performance and estimate variability of reported results. Notably, a dilution series was included in the panel as a measure of reproducibility and sensitivity. Several performance criteria were evaluated for individual participants as well as in the cohort of all participants. RESULTS: A total of 109 laboratories participated and used 134 platforms, including 67 different combinations of extraction and PCR platforms and corresponding reagents. There were no false positives and 10 (1.2%) false negative results, including nine in the weakly positive sample (Ct ∼35.9, ∼640 copies/mL). Twenty (22%) laboratories reported results of mutation detection. Twenty-five (19%) test systems included amplification of human RNA as evidence of proper sampling. The overall linearity of Ct values from individual test systems for the dilution series was good, but inter-assay variability was high. Both operator-related and systematic failures appear to have caused incorrect results. CONCLUSIONS: Beyond providing certification for participating laboratories, EQA provides the opportunity for participants to evaluate their performance against others so that they may improve operating procedures and test systems. Well-selected EQA samples offer additional inferences to be made about assay sensitivity and reproducibility, which have practical applications.


Assuntos
COVID-19/diagnóstico , Genoma Viral , Garantia da Qualidade dos Cuidados de Saúde , SARS-CoV-2/isolamento & purificação , Áustria/epidemiologia , COVID-19/virologia , Humanos , Laboratórios , Técnicas de Diagnóstico Molecular/métodos , Pandemias , SARS-CoV-2/genética , Sensibilidade e Especificidade
20.
J Occup Med Toxicol ; 16(1): 11, 2021 Mar 29.
Artigo em Inglês | MEDLINE | ID: mdl-33781278

RESUMO

BACKGROUND: Second victims, defined as healthcare team members being traumatised by an unanticipated clinical event or outcome, are frequent in healthcare. Evidence of this phenomenon in Germany, however, is sparse. Recently, we reported the first construction and validation of a German questionnaire. This study aimed to understand this phenomenon better in a sample of young (<= 35 years) German physicians. METHODS: The electronic questionnaire (SeViD-I survey) was administered for 6 weeks to a sample of young physicians in training for internal medicine or a subspecialty. All physicians were members of the German Society of Internal Medicine. The questionnaire had three domains - general experience, symptoms, and support strategies - comprising 46 items. Binary logistic regression models were applied to study the influence of various independent factors on the risk of becoming a second victim, the magnitude of symptoms and the time to self-perceived recovery. RESULTS: The response rate was 18% (555/3047). 65% of the participants were female, the mean age was 32 years. 59% experienced second victim incidents in their career so far and 35% during the past 12 months. Events with patient harm and unexpected patient deaths or suicides were the most frequent key incidents. 12% of the participants reported that their self-perceived time to full recovery was more than 1 year or have never recovered. Being female was a risk factor for being a second victim (odds ratio (OR) 2.5) and experiencing a high symptom load (OR 2). Working in acute care was promoting a shorter duration to self-perceived recovery (OR 0.5). Support measures with an exceptionally high approval among second victims were the possibility to discuss emotional and ethical issues, prompt debriefing/crisis intervention after the incident and a safe opportunity to contribute insights to prevent similar events in the future. CONCLUSION: The second victim phenomenon is frequent among young German physicians in internal medicine. In general, these traumatic events have a potentially high impact on physician health and the care they deliver. A better understanding of second victim traumatisations in Germany and broad implementation of effective support programs are warranted.

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