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Smeets F, Margot A, Barbosa-Breda J, Stalmans I, Lemmens S. Differentiating Ischemic Optic Neuropathy from Glaucoma Using Diagnostic Tests. Ophthalmic Res 2024; 67:154-171. [PMID: 38262372 DOI: 10.1159/000535568] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2023] [Accepted: 11/15/2023] [Indexed: 01/25/2024]
Abstract
INTRODUCTION Anterior ischemic optic neuropathy (AION) can mimic glaucoma and consequently cause difficulties in differential diagnosis. The purpose of this paper was to summarize differences in diagnostic tests that can help perform a correct diagnosis. METHODS The search strategy was performed according to the PRISMA 2009 guidelines, and four databases were used: MEDLINE, Embase, Web of Science, and Cochrane. Totally, 772 references were eligible; 39 were included after screening with respect to inclusion criteria that included English language and published in the 20 years before search date. RESULTS Ninety percent (n = 35) of included studies used optical coherence tomography (OCT). Glaucomatous eyes had a significantly greater cup area, volume and depth, cup-to-disk ratio, a lower rim volume and area, and a thinner Bruch's membrane opening-minimum rim width. Retinal nerve fiber layer (RNFL) thinning in glaucomatous eyes occurred primarily at the superotemporal, inferotemporal, and inferonasal sectors, while AION eyes demonstrated mostly superonasal thinning. Glaucoma eyes showed greater macular ganglion cell layer thickness, except at the inferotemporal sector. OCT angiography measurements demonstrated a significant decrease in superficial and deep macular vessel density (VD) in glaucoma compared to AION with similar degree of visual field damage; the parapapillary choroidal VD was spared in AION eyes compared to glaucomatous eyes. CONCLUSION By use of OCT imaging, optic nerve head parameters seem most informative to distinguish between glaucoma and AION. Although both diseases affect the RNFL thickness, it seems to do so in different sectors. Differences in structure and vascularity of the macula can also help in making the differential diagnosis.
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Affiliation(s)
- Frédéric Smeets
- Department of Ophthalmology, University Hospitals UZ Leuven, Leuven, Belgium
| | - Astrid Margot
- Research Group Ophthalmology, Department of Neurosciences, KU Leuven, Leuven, Belgium
| | - João Barbosa-Breda
- Research Group Ophthalmology, Department of Neurosciences, KU Leuven, Leuven, Belgium
- Cardiovascular R&D Centre, Faculty of Medicine of the University of Porto, Porto, Portugal
- Department of Ophthalmology, Centro Hospitalar e Universitário São João, Porto, Portugal
| | - Ingeborg Stalmans
- Department of Ophthalmology, University Hospitals UZ Leuven, Leuven, Belgium
- Research Group Ophthalmology, Department of Neurosciences, KU Leuven, Leuven, Belgium
| | - Sophie Lemmens
- Department of Ophthalmology, University Hospitals UZ Leuven, Leuven, Belgium
- Research Group Ophthalmology, Department of Neurosciences, KU Leuven, Leuven, Belgium
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Rosiers K, Smeets F, Delooz L, Saey V, Vanrobaeys M. A perirenal fibrosarcoma in a newborn calf. VLAAMS DIERGEN TIJDS 2020. [DOI: 10.21825/vdt.v89i3.16537] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Congenital tumors are rare in cattle. In this case report, a calf with a congenital perirenal fibrosarcoma is described. A newborn Belgian Blue calf that succumbed shortly after caesarian section was submitted for necropsy at the diagnostic lab of the ARSIA (Association Régionale de Santé et d’Identification Animales). At necropsy, a hemorrhagic firm mass was found surrounding the left kidney. Histopathological examination of the mass revealed a neoplastic cell population. Additional immunohistochemical stainings were performed to identify the tumor. The majority of neoplastic cells stained positive for vimentin but were negative for neurofilaments (NFs), desmin, CD3, CD20, Von Willebrand factor and cytokeratin, indicating a mesenchymal origin. The tumor was diagnosed as a fibrosarcoma. To the authors’ knowledge, this is the first case of a congenital perirenal fibrosarcoma reported in a Belgian Blue calf in Belgium.
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Naessens S, De Zaeytijd J, Syx D, Vandenbroucke RE, Smeets F, Van Cauwenbergh C, Leroy BP, Peelman F, Coppieters F. The N-terminal p.(Ser38Cys) TIMP3 mutation underlying Sorsby fundus dystrophy is a founder mutation disrupting an intramolecular disulfide bond. Hum Mutat 2019; 40:539-551. [PMID: 30668888 PMCID: PMC6594137 DOI: 10.1002/humu.23713] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2018] [Revised: 01/18/2019] [Accepted: 01/19/2019] [Indexed: 01/01/2023]
Abstract
Sorsby fundus dystrophy (SFD) is a macular degeneration caused by mutations in TIMP3, the majority of which introduce a novel cysteine. However, the exact molecular mechanisms underlying SFD remain unknown. We aimed to provide novel insights into the functional consequences of a distinct N-terminal mutation. Haplotype reconstruction in three SFD families revealed that the identified c.113C>G, p.(Ser38Cys) mutation is a founder in Belgian and northern French families with a late-onset SFD phenotype. Functional consequences of the p.(Ser38Cys) mutation were investigated by high-resolution Western blot analysis of wild type and mutant TIMP3 using patient fibroblasts and in vitro generated proteins, and by molecular modeling of TIMP3 and its interaction partners. We could not confirm a previous hypothesis on dimerization of mutant TIMP3 proteins. However, we identified aberrant intramolecular disulfide bonding. Our data provide evidence for disruption of the established Cys36-Cys143 disulfide bond and formation of a novel Cys36-Cys38 bond, possibly associated with increased glycosylation of the protein. In conclusion, we propose a novel pathogenetic mechanism underlying the p.(Ser38Cys) TIMP3 founder mutation involving intramolecular disulfide bonding. These results provide new insights into the pathogenesis of SFD and other retinopathies linked to mutations in TIMP3, such as age-related macular degeneration.
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Affiliation(s)
- Sarah Naessens
- Center for Medical Genetics Ghent, Ghent University and Ghent University Hospital, Ghent, Belgium
| | - Julie De Zaeytijd
- Department of Ophthalmology, Ghent University Hospital, Ghent, Belgium
| | - Delfien Syx
- Center for Medical Genetics Ghent, Ghent University and Ghent University Hospital, Ghent, Belgium
| | - Roosmarijn E Vandenbroucke
- VIB Center for Inflammation Research, VIB, Ghent, Belgium.,Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
| | - Frédéric Smeets
- Department of Ophthalmology, Ghent University Hospital, Ghent, Belgium
| | - Caroline Van Cauwenbergh
- Center for Medical Genetics Ghent, Ghent University and Ghent University Hospital, Ghent, Belgium.,Department of Ophthalmology, Ghent University Hospital, Ghent, Belgium
| | - Bart P Leroy
- Center for Medical Genetics Ghent, Ghent University and Ghent University Hospital, Ghent, Belgium.,Department of Ophthalmology, Ghent University Hospital, Ghent, Belgium.,Division of Ophthalmology, The Children's Hospital of Philadelphia, Philadelphia, Pennsylvania, USA
| | - Frank Peelman
- Receptor Research Laboratories, Cytokine Receptor Lab, VIB-UGent Center for Medical Biotechnology, Ghent, Belgium.,Department of Biochemistry, Ghent University, Ghent, Belgium
| | - Frauke Coppieters
- Center for Medical Genetics Ghent, Ghent University and Ghent University Hospital, Ghent, Belgium
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Lempereur L, Sohier C, Smeets F, Maréchal F, Berkvens D, Madder M, Francis F, Losson B. Dispersal capacity of Haematopota spp. and Stomoxys calcitrans using a mark-release-recapture approach in Belgium. Med Vet Entomol 2018; 32:298-303. [PMID: 29344956 DOI: 10.1111/mve.12297] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/14/2017] [Revised: 11/05/2017] [Accepted: 12/18/2017] [Indexed: 06/07/2023]
Abstract
The dispersion potential of mechanical vectors is an important factor in the dissemination of pathogens. A mark-release-recapture experiment was implemented using two groups (unfed and partially fed) of the Tabanidae (Diptera) (Haematopota spp.) and biting Muscidae (Diptera) (Stomoxys calcitrans) most frequently collected in Belgium in order to evaluate their dispersion potential. In total, 2104 specimens of Haematopota spp. were collected directly from horses and 5396 S. calcitrans were collected in a cattle farm using hand-nets. Some of these insects were partially fed in vitro and all were subsequently coloured. Overall, 67 specimens of S. calcitrans (1.2%) and 17 of Haematopota spp. (0.8%) were recaptured directly on horses. Stomoxys calcitrans flew maximum distances of 150 m and 300 m when partially fed and unfed, respectively. Haematopota spp. travelled maximum distances of 100 m and 200 m when partially fed and unfed, respectively. Segregation measures seem essential in order to reduce the risk for pathogen transmission. A distance of 150 m appears to be the minimum required for segregation to avoid the risk for mechanical transmission, but in areas of higher vector density, this should probably be increased.
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Affiliation(s)
- L Lempereur
- Laboratory of Parasitology and Parasitic Diseases, Centre for Fundamental and Applied Research for Animal Health (FARAH), Faculty of Veterinary Medicine, University of Liège, Liège, Belgium
| | - C Sohier
- Department of Biomedical Sciences, Institute of Tropical Medicine, Antwerp, Belgium
| | - F Smeets
- Gembloux Agro-Bio Tech, Functional and Evolutionary Entomology Unit, University of Liège, Gembloux, Belgium
| | - F Maréchal
- Laboratory of Parasitology and Parasitic Diseases, Centre for Fundamental and Applied Research for Animal Health (FARAH), Faculty of Veterinary Medicine, University of Liège, Liège, Belgium
| | - D Berkvens
- Department of Biomedical Sciences, Institute of Tropical Medicine, Antwerp, Belgium
| | - M Madder
- Department of Veterinary Tropical Diseases, University of Pretoria, Pretoria, South Africa
| | - F Francis
- Gembloux Agro-Bio Tech, Functional and Evolutionary Entomology Unit, University of Liège, Gembloux, Belgium
| | - B Losson
- Laboratory of Parasitology and Parasitic Diseases, Centre for Fundamental and Applied Research for Animal Health (FARAH), Faculty of Veterinary Medicine, University of Liège, Liège, Belgium
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Soetaert K, Vluggen C, Duytschaever L, Denoël J, Roupie V, Smeets F, Bruffaerts N, Huygen K, Fretin D, Diels M, Rigouts L, Saegerman C, Mathys V. Trend analysis suggested a change in subspecies among Mycobacterium avium isolated from pigs in Belgium, 1967-2013. Vet Rec 2017; 180:449. [PMID: 28283669 DOI: 10.1136/vr.103951] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/16/2017] [Indexed: 11/04/2022]
Affiliation(s)
- K Soetaert
- Bacterial Diseases Service, Operational Direction Communicable and Infectious Diseases, Scientific Institute of Public Health (WIV-ISP), Brussels, Belgium
| | - C Vluggen
- Bacterial Diseases Service, Operational Direction Communicable and Infectious Diseases, Scientific Institute of Public Health (WIV-ISP), Brussels, Belgium
| | - L Duytschaever
- Research Unit for Epidemiology and Risk Analysis applied to Veterinary Sciences (UREAR-ULg), Fundamental and Applied Research, Animal and Health (FARAH) Center, Liège, Belgium
| | - J Denoël
- Research Unit for Epidemiology and Risk Analysis applied to Veterinary Sciences (UREAR-ULg), Fundamental and Applied Research, Animal and Health (FARAH) Center, Liège, Belgium
| | - V Roupie
- Bacterial Zoonoses of Livestock Unit, Operational Direction Bacterial Diseases, Veterinary and Agrochemical Research Centre (CODA-CERVA), Brussels, Belgium
| | - F Smeets
- Research Unit for Epidemiology and Risk Analysis applied to Veterinary Sciences (UREAR-ULg), Fundamental and Applied Research, Animal and Health (FARAH) Center, Liège, Belgium
| | - N Bruffaerts
- Immunology Service, Operational Direction Communicable and infectious Diseases, Scientific Institute of Public Health (WIV-ISP), Brussels, Belgium
| | - K Huygen
- Immunology Service, Operational Direction Communicable and infectious Diseases, Scientific Institute of Public Health (WIV-ISP), Brussels, Belgium
| | - D Fretin
- Bacterial Zoonoses of Livestock Unit, Operational Direction Bacterial Diseases, Veterinary and Agrochemical Research Centre (CODA-CERVA), Brussels, Belgium
| | - M Diels
- BCCM/ITM Mycobacteria Collection, Mycobacteriology Unit, Institute of Tropical Medicine, Antwerp, Belgium
| | - L Rigouts
- BCCM/ITM Mycobacteria Collection, Mycobacteriology Unit, Institute of Tropical Medicine, Antwerp, Belgium
| | - C Saegerman
- Research Unit for Epidemiology and Risk Analysis applied to Veterinary Sciences (UREAR-ULg), Fundamental and Applied Research, Animal and Health (FARAH) Center, Liège, Belgium
| | - V Mathys
- Bacterial Diseases Service, Operational Direction Communicable and Infectious Diseases, Scientific Institute of Public Health (WIV-ISP), Brussels, Belgium
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Dal Pozzo F, Martinelle L, Léonard P, Renaville B, Renaville R, Thys C, Smeets F, Czaplicki G, Van Esbroeck M, Saegerman C. Q Fever Serological Survey and Associated Risk Factors in Veterinarians, Southern Belgium, 2013. Transbound Emerg Dis 2016; 64:959-966. [PMID: 26749554 DOI: 10.1111/tbed.12465] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2015] [Indexed: 01/07/2023]
Abstract
A sero-epidemiological survey was organized among veterinarians working in Southern Belgium to estimate the seroprevalence of Q fever and the risk factors associated with exposure. A total of 108 veterinarians took part to this cross-sectional study, with a majority practicing with livestock animals. The overall seroprevalence was 45.4%, but it increased to 58.3% among veterinarians having contact with livestock. Three main serological profiles were detected (relatively recent, past and potentially chronic infections). The contact with manure during the prior month was the risk factor associated with seropositivity after multivariate logistic regression analysis. Classification and regression tree analysis identified the age as the most predictive variable to exclude potentially chronic infection in apparently healthy seropositive veterinarians. In conclusion, livestock veterinarians practicing in Southern Belgium are highly exposed to Q fever, a neglected zoonosis for which serological and medical examinations should be envisaged in at risk groups.
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Affiliation(s)
| | | | - P Léonard
- Centre Hospitalier Universitaire, Liege, Belgium
| | | | | | - C Thys
- University of Liege, Liege, Belgium
| | - F Smeets
- University of Liege, Liege, Belgium
| | - G Czaplicki
- Association Régionale de Santé et d'Identification Animales (ARSIA), Ciney, Belgium
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Smeets F, Ummels JW, Verhey FRJ, van Alphen SPJ. [An 87-year-old-man with late-onset frontotemporal dementia: a case-study]. Tijdschr Psychiatr 2016; 58:543-546. [PMID: 27397807] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
An 87-year-old man showed behavioral disinhibition and nocturnal restlessness as well as short-term memory problems. We diagnosed late-onset frontotemporal dementia (LO-FTD), a relatively rare disease. Based on the course of the disease progress, we ruled out medication-induced mania and bipolar disorder. Given the results of the CT-scan, we also dismissed the possibility that the patient was suffering from dementia based on Alzheimer's disease and vascular factors that followed an atypical course. Our article illustrates the complexity of the diagnostic process investigating LO-FTD.
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Klingels K, van den Hauwe M, Smeets F, Schraeyen M, Buyse G, Goemans N. Assessment of early motor development in young boys with Duchenne muscular dystrophy. Neuromuscul Disord 2015. [DOI: 10.1016/j.nmd.2015.06.160] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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DE Regge N, DE Deken R, Fassotte C, Losson B, Deblauwe I, Madder M, Vantieghem P, Tomme M, Smeets F, Cay AB. Culicoides monitoring in Belgium in 2011: analysis of spatiotemporal abundance, species diversity and Schmallenberg virus detection. Med Vet Entomol 2015; 29:263-275. [PMID: 25761054 DOI: 10.1111/mve.12109] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/29/2013] [Revised: 11/27/2014] [Accepted: 12/04/2014] [Indexed: 06/04/2023]
Abstract
In 2011, Culicoides (Diptera: Ceratopogonidae) were collected at 16 locations covering four regions of Belgium with Onderstepoort Veterinary Institute (OVI) traps and at two locations with Rothamsted suction traps (RSTs). Quantification of the collections and morphological identification showed important variations in abundance and species diversity between individual collection sites, even for sites located in the same region. However, consistently higher numbers of Culicoides midges were collected at some sites compared with others. When species abundance and diversity were analysed at regional level, between-site variation disappeared. Overall, species belonging to the subgenus Avaritia together with Culicoides pulicaris (subgenus Culicoides) were the most abundant, accounting for 80% and 96% of all midges collected with RSTs and OVI traps, respectively. Culicoides were present during most of the year, with Culicoides obsoletus complex midges found from 9 February until 27 December. Real-time reverse-transcription polymerase chain reaction screening for Schmallenberg virus in the heads of collected midges resulted in the first detection of the virus in August 2011 and identified C. obsoletus complex, Culicoides chiopterus and Culicoides dewulfi midges as putative vector species. At Libramont in the south of Belgium, no positive pools were identified.
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Affiliation(s)
- N DE Regge
- Operational Direction Viral Diseases, Veterinary and Agrochemical Research Centre (CODA-CERVA), Brussels, Belgium
| | - R DE Deken
- Department of Biomedical Sciences, Institute of Tropical Medicine, Antwerp, Belgium
| | - C Fassotte
- Plant Protection and Ecotoxicology, Life Science Department, Walloon Agricultural Research Centre (CRA-W), Gembloux, Belgium
| | - B Losson
- Department of Infectious and Parasitic Diseases, Faculty of Veterinary Medicine, University of Liège, Liège, Belgium
| | - I Deblauwe
- Department of Biomedical Sciences, Institute of Tropical Medicine, Antwerp, Belgium
| | - M Madder
- Department of Biomedical Sciences, Institute of Tropical Medicine, Antwerp, Belgium
- Department of Veterinary Tropical Diseases, Faculty of Veterinary Science, University of Pretoria, Pretoria, South Africa
| | - P Vantieghem
- Department of Biomedical Sciences, Institute of Tropical Medicine, Antwerp, Belgium
| | - M Tomme
- Plant Protection and Ecotoxicology, Life Science Department, Walloon Agricultural Research Centre (CRA-W), Gembloux, Belgium
| | - F Smeets
- Department of Infectious and Parasitic Diseases, Faculty of Veterinary Medicine, University of Liège, Liège, Belgium
| | - A B Cay
- Operational Direction Viral Diseases, Veterinary and Agrochemical Research Centre (CODA-CERVA), Brussels, Belgium
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Smeets F, Lataster T, van Winkel R, de Graaf R, Ten Have M, van Os J. Testing the hypothesis that psychotic illness begins when subthreshold hallucinations combine with delusional ideation. Acta Psychiatr Scand 2013; 127:34-47. [PMID: 22676336 DOI: 10.1111/j.1600-0447.2012.01888.x] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
OBJECTIVE While hallucinations and delusions are often considered as a single class of 'positive symptoms', little is known about their dynamic cooccurrence in relation to clinical outcome in non-help-seeking people. METHOD The Netherlands Mental Health and Incidence Study (NEMESIS-1) is a longitudinal study of mental disorders (n = 7075) with three measurements over a 3-year period. Risk factors, persistence of psychotic experiences, and clinical outcome were analyzed for groups with: i) no psychotic experiences, ii) only delusions, iii) only hallucinations, and iv) both delusions and hallucinations. RESULTS Hallucinations and delusions occurred together more often (T0, 3.5%; T1, 1.0%; T2, 0.9%) than that predicted by chance (T0, 1.0%; T1, 0.1%; T2, 0.04%). The group with both symptoms showed more 'first-rank'-like delusions compared with the group with only delusions. Having both hallucinations and delusions, compared to isolated symptoms, was associated more strongly with risk factors, comorbid affective symptoms, negative symptoms, and persistence of psychotic experiences. This was not an artifact of having more symptoms in general. CONCLUSION Experiencing both delusions and hallucinations is an indicator of greater etiological load resulting in more clinical outcome. A specific 'hallucinatory-delusional state' may represent an early phase of exacerbation of aberrant attribution of salience, increasing risk for clinical outcome.
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Affiliation(s)
- F Smeets
- Department of Psychiatry and Psychology, South Limburg Mental Health Research and Teaching Network, EURON, Maastricht University Medical Centre, Maastricht, the Netherlands.
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De Regge N, Deblauwe I, De Deken R, Vantieghem P, Madder M, Geysen D, Smeets F, Losson B, van den Berg T, Cay AB. Detection of Schmallenberg virus in differentCulicoidesspp. by real-time RT-PCR. Transbound Emerg Dis 2012; 59:471-5. [DOI: 10.1111/tbed.12000] [Citation(s) in RCA: 151] [Impact Index Per Article: 12.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2012] [Indexed: 11/30/2022]
Affiliation(s)
- N. De Regge
- Veterinary and Agrochemical Research Centre; Brussel; Belgium
| | - I. Deblauwe
- Institute of Tropical Medicine; Antwerp; Belgium
| | - R. De Deken
- Institute of Tropical Medicine; Antwerp; Belgium
| | | | | | - D. Geysen
- Institute of Tropical Medicine; Antwerp; Belgium
| | | | | | - T. van den Berg
- Veterinary and Agrochemical Research Centre; Brussel; Belgium
| | - A. B. Cay
- Veterinary and Agrochemical Research Centre; Brussel; Belgium
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Smeets F, Verhulst J. L'Acylation au moyen de chlorures d'acides de quelques composés aromatiques par la méthode de Friedel et Crafts. ACTA ACUST UNITED AC 2010. [DOI: 10.1002/bscb.19540630901] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Abstract
Two hundred seventy severely hypoxemic (PaO2 < or = 55 mm Hg: mean +/- SD = 48 +/- 6) COPD patients (232 men) were selected for long-term oxygen therapy (LTOT). They were old (mean = 66 +/- 8 years), with severe airflow limitation (FEV1 = 30 +/- 12 percent of predicted), some CO2 retention (PaCO2 = 47 +/- 9 mm Hg), and compensated respiratory acidosis. Eighteen percent of the patients presented some complicating pleuropulmonary diseases (pleural thickening, sequelae of tuberculosis, etc). Overall survival proportion was poor: 70, 50, and 43 percent at 1, 2, and 3 years, respectively. The Cox model showed that the factors which independently reduced survival were lower CO transfer coefficient, smaller intrathoracic gas volume, more severe bronchial obstruction, the fact that oxygen administration did not increase PaO2 above 65 mm Hg, increasing age, and the presence of chest wall abnormalities. When the patients were divided into three groups according to mortality risk, the mean clinical and functional profile of the high-mortality risk group was consistent with the prevalence of emphysematous lesions. Moreover, the best survivors fitted better into the "bronchitic" type; they showed a higher mean PaCO2, suggesting that some degree of hypoventilation could delay muscular fatigue and improve survival. The difference in the proportion of "emphysematous" and "bronchitic" patients is a possible explanation for the variability of the mortality rate reported in literature.
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Affiliation(s)
- P Dubois
- Service de Pneumologie, Cliniques Universitaires de Mont-Godinne, Belgium
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Affiliation(s)
- F Smeets
- Centre Hospitalier de Sainte-Ode, Belgium
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Smeets F. Place of education in the management of chronic lung disease: role of the educational coordinator. Monaldi Arch Chest Dis 1993; 48:669-71. [PMID: 8124309] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023] Open
Abstract
The aim of patient education is more than just improve compliance to treatment. Teaching the patient to take an active part in the management of his handicap needs special communication skills and involves much more than just giving courses. Unfortunately all medical professionals are not necessarily good educators. As amateurism in patient education is a thing of the past, the role of the Health Education Coordinator in a pulmonary rehabilitation programme becomes essential to the quality of the programme.
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Affiliation(s)
- F Smeets
- Centre Hospitalier Ste Ode, Belgium
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Smeets F. Social life organization for severely disabled respiratory patients. Monaldi Arch Chest Dis 1993; 48:560-4. [PMID: 8312928] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023] Open
Affiliation(s)
- F Smeets
- Centre Hospitalier Ste Ode, Belgium
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Abstract
Over the past few years, pulmonary rehabilitation programs have become more usual in Europe. Even COPD patients on LTOT no longer feel home-bound or grounded. Nevertheless, they experience anxiety when leaving their usual medical environment. The SEP would like to encourage COPD patients to travel by creating a European COPD network. The objectives of this network would be (1) to record all the pulmonary centers in Europe that are involved in pulmonary rehabilitation; (2) to know the availability of oxygen in the different European countries and pulmonary centers; (3) to record those of these centers that would agree to take under supervision COPD patients traveling in their respective area and to provide all technical and medical assistance; (4) to select the most suitable holiday resorts for COPD patients according to ambient temperature, altitude, hotel accommodation, pollution, and possibility for COPD patients to walk around and take excursions; (5) to include oxygen suppliers and medical equipment companies involved in the technical assistance of these COPD patients traveling with all their paraphernalia. Such a European network would enable COPD patients to travel securely, being sure to find medical and technical assistance in all of these "SEP-recommended" places (SEP Guide).
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Affiliation(s)
- F Smeets
- Centre Hospitalier, Ste. Ode, Baconfoy, Tenneville, Belgium
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Dubois P, Machiels J, Smeets F, Delwiche JP, Lulling J. CO transfer capacity as a determining factor of survival for severe hypoxaemic COPD patients under long-term oxygen therapy. Eur Respir J 1990; 3:1042-7. [PMID: 2289552] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
The transfer capacity for carbon monoxide is a commonly used method in clinical practice but is rarely considered as a prognostic factor for patients under long term oxygen therapy (LTOT). LTOT was applied to 217 stable, severely hypoxaemic (arterial oxygen tension (PaO2 less than 7.3 kPa or 55 mmHg) chronic obstructive pulmonary disease (COPD) patients, according to the usual recommendations. The average survival rate of this series is rather poor: 46% at 24 months. There is nevertheless an important difference between patients with a normal transfer coefficient and those with a decreased one (79% survival at 2 yrs as compared to 37%). On the other hand, the degree of airflow limitation has no prognostic value in the present series of very disabled patients. We can conclude that hypoxaemic COPD patients with a severely decreased transfer coefficient have a poor prognosis, even under LTOT, compared to patients with an equivalent impairment of airflow limitation and hypoxaemia but with a normal CO transfer factor/alveolar ventilation ratio (TLCO/VA).
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Affiliation(s)
- P Dubois
- Service de Pneumologie, Cliniques de l'Université Catholique de Louvain à Mont Godinne, Belgium
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Dubois P, Machiels J, Smeets F, Delwiche JP, Lulling J. CO transfer capacity as a determining factor of survival for severe hypoxaemic COPD patients under long-term oxygen therapy. Eur Respir J 1990. [DOI: 10.1183/09031936.93.03091042] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
The transfer capacity for carbon monoxide is a commonly used method in clinical practice but is rarely considered as a prognostic factor for patients under long term oxygen therapy (LTOT). LTOT was applied to 217 stable, severely hypoxaemic (arterial oxygen tension (PaO2 less than 7.3 kPa or 55 mmHg) chronic obstructive pulmonary disease (COPD) patients, according to the usual recommendations. The average survival rate of this series is rather poor: 46% at 24 months. There is nevertheless an important difference between patients with a normal transfer coefficient and those with a decreased one (79% survival at 2 yrs as compared to 37%). On the other hand, the degree of airflow limitation has no prognostic value in the present series of very disabled patients. We can conclude that hypoxaemic COPD patients with a severely decreased transfer coefficient have a poor prognosis, even under LTOT, compared to patients with an equivalent impairment of airflow limitation and hypoxaemia but with a normal CO transfer factor/alveolar ventilation ratio (TLCO/VA).
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Smeets F, Gower PE. The site of infection in 133 patients with bacteriuria. Clin Nephrol 1973; 1:290-6. [PMID: 4588244] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023] Open
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Lebacq E, Flasse B, Devogelaere JP, Smeets F, Bosly A. Immunological changes in Crohn's disease: attempt at devising a new diagnostic test. Acta Gastroenterol Belg 1970; 33:855-60. [PMID: 5513362] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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Lebacq E, Smeets F, Desmet V. [Skin reaction to leukocytes in cases of active chronic hepatitis]. Arch Fr Mal App Dig 1970; 59:601-608. [PMID: 5481474] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
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Lebacq E, Fauchet MC, Smeets F. [Immunologic studies in 2 cases of chronic active hepatitis associated with ulcerative colitis]. Acta Gastroenterol Belg 1969; 32:447-56. [PMID: 4189925] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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