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1.
BMC Health Serv Res ; 24(1): 502, 2024 Apr 23.
Artículo en Inglés | MEDLINE | ID: mdl-38654340

RESUMEN

BACKGROUND: A new interprofessional model incorporating non-dispensing pharmacists in general practice teams can improve the quality of pharmaceutical care. However, results of the model are dependent on the context. Understanding when, why and how the model works may increase chances of successful broader implementation in other general practices. Earlier theories suggested that the results of the model are achieved by bringing pharmacotherapeutic knowledge into general practices. This mechanism may not be enough for successful implementation of the model. We wanted to understand better how establishing new interprofessional models in existing healthcare organisations takes place. METHODS: An interview study, with a realist informed evaluation was conducted. This qualitative study was part of the Pharmacotherapy Optimisation through Integration of a Non-dispensing pharmacist in primary care Teams (POINT) project. We invited the general practitioners of the 9 general practices who (had) worked closely with a non-dispensing pharmacist for an interview. Interview data were analysed through discussions about the coding with the research team where themes were developed over time. RESULTS: We interviewed 2 general practitioners in each general practice (18 interviews in total). In a context where general practitioners acknowledge the need for improvement and are willing to work with a non-dispensing pharmacist as a new team member, the following mechanisms are triggered. Non-dispensing pharmacists add new knowledge to current general practice. Through everyday talk (discursive actions) both general practitioners and non-dispensing pharmacists evolve in what they consider appropriate, legitimate and imaginable in their work situations. They align their professional identities. CONCLUSIONS: Not only the addition of new knowledge of non-dispensing pharmacist to the general practice team is crucial for the success of this interprofessional healthcare model, but also alignment of the general practitioners' and non-dispensing pharmacists' professional identities. This is essentially different from traditional pharmaceutical care models, in which pharmacists and GPs work in separate organisations. To induce the process of identity alignment, general practitioners need to acknowledge the need to improve the quality of pharmaceutical care interprofessionally. By acknowledging the aspect of interprofessionality, both general practitioners and non-dispensing pharmacists will explore and reflect on what they consider appropriate, legitimate and imaginable in carrying out their professional roles. TRIAL REGISTRATION: The POINT project was pre-registered in The Netherlands National Trial Register, with Trial registration number NTR-4389.


Asunto(s)
Medicina General , Médicos Generales , Relaciones Interprofesionales , Entrevistas como Asunto , Farmacéuticos , Investigación Cualitativa , Humanos , Médicos Generales/psicología , Medicina General/organización & administración , Actitud del Personal de Salud , Grupo de Atención al Paciente/organización & administración , Femenino , Masculino , Rol Profesional
2.
BMC Health Serv Res ; 22(1): 756, 2022 Jun 07.
Artículo en Inglés | MEDLINE | ID: mdl-35672735

RESUMEN

BACKGROUND: Health care coverage decisions deal with health care technology provision or reimbursement at a national level. The coverage decision report, i.e., the publicly available document giving reasons for the decision, may contain various elements: quantitative calculations like cost and clinical effectiveness analyses and formalised and non-formalised qualitative considerations. We know little about the process of combining these heterogeneous elements into robust decisions. METHODS: This study describes a model for combining different elements in coverage decisions. We build on two qualitative cases of coverage appraisals at the Dutch National Health Care Institute, for which we analysed observations at committee meetings (n = 2, with field notes taken) and the corresponding audio files (n = 3), interviews with appraisal committee members (n = 10 in seven interviews) and with Institute employees (n = 5 in three interviews), and relevant documents (n = 4). RESULTS: We conceptualise decisions as combinations of elements, specifically (quantitative) findings and (qualitative) arguments and values. Our model contains three steps: 1) identifying elements; 2) designing the combinations of elements, which entails articulating links, broadening the scope of designed combinations, and black-boxing links; and 3) testing these combinations and choosing one as the final decision. CONCLUSIONS: Based on the proposed model, we suggest actively identifying a wider variety of elements and stepping up in terms of engaging patients and the public, including facilitating appeals. Future research could explore how different actors perceive the robustness of decisions and how this relates to their perceived legitimacy.


Asunto(s)
Tecnología Biomédica , Atención a la Salud , Academias e Institutos , Instituciones de Salud , Humanos
3.
Br J Clin Pharmacol ; 85(10): 2321-2331, 2019 10.
Artículo en Inglés | MEDLINE | ID: mdl-31240722

RESUMEN

AIMS: To evaluate the effect of non-dispensing pharmacists (NDPs) integrated in general practice on medication-related hospitalisations, drug burden index and costs in patients at high risk of medication problems (being 65 years or older and using 5 or more chronic medications). METHODS: This was a multicentre, nonrandomised, controlled intervention study with pre-post comparison (2013 vs June 2014 to May 2015) in 25 general practices in the Netherlands, comparing NDP-led care (intervention) with 2 current pharmaceutical care models (usual care and usual care plus). In the intervention group, 10 specially trained NDPs were employed in general practices to take integral responsibility for the pharmaceutical care. They provided a broad range of medication therapy management services both on patient level (e.g. clinical medication review) and practice level (e.g. quality improvement projects). In the control groups, pharmaceutical care was provided as usual by general practitioners and community pharmacists, or as usual plus, when pharmacists were additionally trained in performing medication reviews. RESULTS: Overall, 822 medication-related hospitalisations were identified among 11 281 high-risk patients during the intervention period. After adjustment for clustering and potential confounders, the rate ratio of medication-related hospitalisations in the intervention group compared to usual care was 0.68 (95% confidence interval: 0.57-0.82) and 1.05 (95% confidence interval: 0.73-1.52) compared to usual care plus. No differences in drug burden index or costs were found. CONCLUSIONS: In general practices with an integrated NDP, the rate of medication-related hospitalisations is lower compared to usual care. No differences with usual care plus were found.


Asunto(s)
Hospitalización/estadística & datos numéricos , Administración del Tratamiento Farmacológico/organización & administración , Servicios Farmacéuticos/organización & administración , Farmacéuticos/organización & administración , Anciano , Anciano de 80 o más Años , Efectos Colaterales y Reacciones Adversas Relacionados con Medicamentos/prevención & control , Femenino , Medicina General/organización & administración , Humanos , Masculino , Países Bajos , Rol Profesional
4.
J Med Ethics ; 36(2): 79-83, 2010 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-20133400

RESUMEN

BACKGROUND: Policy instruments based on the working of markets have been introduced to empower consumers of healthcare. However, it is still not easy to become a critical consumer of healthcare. OBJECTIVES: The aim of this study is to analyse the possibilities of the state to strengthen the position of patients with the aid of a new financial regime, such as personal health budgets. METHODS: Data were collected through in-depth interviews with executives, managers, professionals and client representatives of six long-term care institutions. RESULTS: With the introduction of individual budgets the responsibility for budgetary control has shifted from the organisational level to the individual level in the caregiver-client relationship. Having more luxurious care on offer necessitates a stronger demarcation of regular care because organisations cannot simultaneously offer extra care as part of the standard care package. New financial instruments have an impact on the culture of receiving and giving care. Distributive justice takes on new meaning with the introduction of financial market mechanisms in healthcare; the distributing principle of 'need' is transformed into the principle of 'economic demand'. CONCLUSION: Financial instruments not only act as a countervailing power against providers insufficiently client-oriented, but are also used by providers to reinforce their own positions vis-à-vis demanding clients. Tailor-made finance is not the same as tailor-made care.


Asunto(s)
Atención a la Salud/ética , Reforma de la Atención de Salud/ética , Cuidados a Largo Plazo/ética , Atención Individual de Salud/ética , Atención a la Salud/economía , Reforma de la Atención de Salud/economía , Necesidades y Demandas de Servicios de Salud , Humanos , Cuidados a Largo Plazo/economía , Programas Nacionales de Salud/economía , Países Bajos , Atención Individual de Salud/economía , Atención Individual de Salud/organización & administración
5.
Health Policy ; 119(9): 1176-87, 2015 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-25899880

RESUMEN

One way in which governments are seeking to improve the efficiency of the health care sector is by redesigning health services to contain labour costs. The aim of this study was to investigate the impact of new professional roles on a wide range of health service outcomes and costs. A systematic literature review was performed by searching in different databases for evaluation papers of new professional roles (published 1985-2013). The PRISMA checklist was used to conduct and report the systematic literature review and the EPHPP-Quality Assessment Tool to assess the quality of the studies. Forty-one studies of specialist nurses (SNs) and advanced nurse practitioners (ANPs) were selected for data extraction and analysis. The 25 SN studies evaluated most often quality of life (10 studies), clinical outcomes (8), and costs (8). Significant advantages were seen most frequently regarding health care utilization (in 3 of 3 studies), patient information (5 of 6), and patient satisfaction (4 of 6). The 16 ANP studies evaluated most often patient satisfaction (8), clinical outcomes (5), and costs (5). Significant advantages were seen most frequently regarding clinical outcomes (5 of 5), patient information (3 of 4), and patient satisfaction (5 of 8). Promoting new professional roles may help improve health care delivery and possibly contain costs. Exploring the optimal skill-mix deserves further attention from health care professionals, researchers and policy makers.


Asunto(s)
Costos de la Atención en Salud , Enfermeras Practicantes/organización & administración , Enfermeras Especialistas/organización & administración , Rol Profesional , Calidad de la Atención de Salud/organización & administración , Análisis Costo-Beneficio/organización & administración , Humanos , Enfermeras Practicantes/economía , Enfermeras Practicantes/normas , Enfermeras Especialistas/economía , Enfermeras Especialistas/normas , Satisfacción del Paciente
6.
Biochem Pharmacol ; 44(12): 2339-45, 1992 Dec 15.
Artículo en Inglés | MEDLINE | ID: mdl-1472098

RESUMEN

Isolated rat hepatocytes were incubated with the carcinogen N-hydroxy-2-acetylaminofluorene (N-OH-AAF). Cells from fasted rats were much more susceptible to the cytotoxic effects of 1 mM N-OH-AAF than cells from fed rats: after approximately 90 min exposure the former were all dead but the latter still viable. Even after 240 min 25% of the "fed" cells were still viable. The loss of viability was preceded by a decrease in mitochondrial membrane potential (MMP) and inhibition of respiration; the mitochondrial respiration as measured in permeabilized cells appeared uncoupled. Addition of 15 mM fructose prevented cell death and the loss of MMP in cells both from fed and fasted rats to a large extent; however, uncoupling was not prevented. After incubation of hepatocytes from fasted rats with 1 mM [3H]N-OH-AAF for 120 min, 12 nmol [3H]N-OH-AAF became bound per mg cell protein. Addition of fructose decreased this to 7 nmol. In cells from fed animals 4 nmol [3H]N-OH-AAF became bound after 120 min, in this case fructose had no effect. Part of the protective effect of fructose might be explained by a decrease in intracellular ATP, which prevents the formation of reactive intermediates of N-OH-AAF resulting in a decrease of covalent binding, in addition, fructose protects via a yet to be determined mechanism.


Asunto(s)
Ayuno/metabolismo , Hidroxiacetilamino Fluoreno/farmacología , Hígado/efectos de los fármacos , Adenosina Trifosfato/metabolismo , Animales , Supervivencia Celular/efectos de los fármacos , Células Cultivadas/efectos de los fármacos , Fructosa/farmacología , Hígado/metabolismo , Hígado/patología , Masculino , Potenciales de la Membrana/efectos de los fármacos , Mitocondrias Hepáticas/efectos de los fármacos , Oxidación-Reducción , Consumo de Oxígeno/efectos de los fármacos , Ratas , Ratas Wistar , Factores de Tiempo
7.
Methods Inf Med ; 42(4): 307-12, 2003.
Artículo en Inglés | MEDLINE | ID: mdl-14534627

RESUMEN

OBJECTIVES: This article analyzes the efforts of three organizations to provide a standard that guides Internet users to reliable health care sites. METHODS: Comparison of health Internet sites, interviews and document studies. RESULTS: In comparing these approaches, three different constructions of reliability are identified. CONCLUSIONS: The resulting possibilities and restrictions of these constructions for users that are searching for health information on the Internet are revealed.


Asunto(s)
Servicios de Información/normas , Almacenamiento y Recuperación de la Información/métodos , Internet/normas , Educación del Paciente como Asunto/métodos , Seguridad Computacional , Humanos , Países Bajos , Educación del Paciente como Asunto/normas , Reproducibilidad de los Resultados
8.
Ned Tijdschr Geneeskd ; 146(1): 27-30, 2002 Jan 05.
Artículo en Holandés | MEDLINE | ID: mdl-11802334

RESUMEN

OBJECTIVE: To investigate the information insurance physicians have at their disposal to assess employment disability and how they verify this information. DESIGN: Descriptive. METHOD: In the period January 1999-April 2000, data were collected by means of semi-structured interviews with 19 insurance physicians from the 5 social insurance companies and from observations of 73 consultations conducted by 6 experienced insurance physicians. RESULTS: The average duration of the consultations between the insurance physicians and the clients was 30 minutes. Within these consultations, several issues were briefly discussed. The information obtained by the insurance physicians was limited to the first day of illness, a general description of the complaints and a code for the diagnoses. In 23 cases (32%) the insurance physicians requested information from the attending physician, and in 2 cases (3%) an expert opinion was requested. CONCLUSION: For the insurance physicians, the client was often the most important or indeed sole source of information. Often there was no other information against which the patient's data could be verified and such information was mostly not requested.


Asunto(s)
Evaluación de la Discapacidad , Derivación y Consulta/normas , Indemnización para Trabajadores/estadística & datos numéricos , Adulto , Recolección de Datos/métodos , Femenino , Humanos , Masculino , Persona de Mediana Edad , Países Bajos , Derivación y Consulta/estadística & datos numéricos
9.
Ther Umsch ; 52(3): 174-8, 1995 Mar.
Artículo en Alemán | MEDLINE | ID: mdl-7725272

RESUMEN

Among all patients presenting with acute vertigo, majority will be suffering from benign paroxysmal positional vertigo, vestibular neuritis or Meniere's disease. One of the most important central vestibular disorder that imitates labyrinthine dysfunction is vertebrobasilar artery disease. To differentiate this condition from peripheral vestibular lesions, particular attention should be directed to the type of nystagmus which is present. Additionally, duration of vertigo and further neurological symptoms and signs are crucial for correct localization and etiology of the underlying disorder.


Asunto(s)
Enfermedad de Meniere/complicaciones , Insuficiencia Vertebrobasilar/complicaciones , Vértigo/diagnóstico , Vértigo/etiología , Enfermedad Aguda , Anciano , Diagnóstico Diferencial , Humanos , Enfermedad de Meniere/diagnóstico , Persona de Mediana Edad , Examen Neurológico , Nistagmo Patológico/diagnóstico , Insuficiencia Vertebrobasilar/diagnóstico
10.
Schweiz Rundsch Med Prax ; 81(50): 1518-22, 1992 Dec 08.
Artículo en Alemán | MEDLINE | ID: mdl-1334568

RESUMEN

Herpes simplex encephalitis (HSE) is the most common nonepidemic cause of acute viral encephalitis. Since successful therapy depends on a high level of suspicion that HSE is present and on the early administration of antiviral treatment, knowledge of clinical and laboratory findings of HSE is of great importance. The clinical hallmark of HSE are signs of both focal and diffuse neurologic involvement. Our case report exemplifies the diagnostic problems that can occur in HSE-patients. The validity of the different ancillary examinations is discussed. Up to the present time brain biopsy has been the method of choice for a reliable early diagnosis of HSE. In the foreseeable future early diagnosis is likely to become available in a non-invasive way by the polymerase-chain reaction. Immediate antiviral therapy with acyclovir in HSE has proved to be useful in rigorously controlled trials. The clinical picture of the acyclovir-induced encephalopathy represents a disorder that can be probably avoided by means of a sufficient hydration.


Asunto(s)
Encefalitis/microbiología , Herpes Simple/inmunología , Simplexvirus/inmunología , Aciclovir/uso terapéutico , Adulto , Antígenos Virales/aislamiento & purificación , Encefalitis/diagnóstico , Encefalitis/tratamiento farmacológico , Femenino , Humanos , Técnicas Inmunológicas , Tomografía Computarizada por Rayos X
11.
Methods Inf Med ; 49(1): 20-7, 2010.
Artículo en Inglés | MEDLINE | ID: mdl-19448890

RESUMEN

OBJECTIVES: To assess the effects of a CPOE system on inter-professional workflow in the medication process. METHODS: Twenty-three semi-structured interviews with physicians, nurses, and pharmacists were conducted in a Dutch academic hospital. In addition, the handwritten and system-generated documents used daily were collected for analysis. Data was analyzed on the basis of three conceptual themes in the inter-professional workflow: division of tasks, flow of information, and task coordination. RESULTS: The CPOE system reorganized the existing work procedures, affecting the workflow among the three professional groups both advantageously and disadvantageously. The system resulted in the reassignment of tasks and reallocation of areas of expertise in the medication process. Moreover, patients' medication-related information became fragmented in both the paper records and in the electronic records, as well as in different professional domains. The system provided limited support for professional groups to coordinate their tasks temporally. It also made it difficult to build mutual intelligibility upon new changes in the medication plan. To integrate tasks, the professional groups had to bypass the system or add new steps and extra coordinative tasks. CONCLUSION: We identified several workflow integration issues after the implementation of a CPOE system. Our insights into these issues can help ensure that the system design or redesign properly integrates all tasks, information, and areas of expertise of professional groups into those of the physicians.


Asunto(s)
Conducta Cooperativa , Prescripción Electrónica , Relaciones Interprofesionales , Sistemas de Entrada de Órdenes Médicas/organización & administración , Grupo de Atención al Paciente/organización & administración , Hospitales Universitarios , Humanos , Errores de Medicación/prevención & control , Países Bajos , Interfaz Usuario-Computador , Flujo de Trabajo
13.
Proc Soc Exp Biol Med ; 173(4): 512-4, 1983 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-6889315

RESUMEN

The metabolic clearance rate (MCR) of immunoreactive rat prolactin (rPRL) was determined in urethane-anaesthetized 14 to 16-day-old rat pups using the constant infusion to equilibrium method. Two different doses of rPRL were used, 329 and 472 ng/min each at a volume of 0.0025 ml/min for 30 min. The MCR was 0.216 ml/min following infusion of 329 ng PRL/min dose and 0.337 ml/min following infusion of the 472-ng/min dose. When calculated on the basis of metabolic body weight the MCR of rPRL in rat pups was comparable to that of adult rats.


Asunto(s)
Prolactina/sangre , Factores de Edad , Animales , Peso Corporal , Femenino , Masculino , Tasa de Depuración Metabólica , Ratas , Destete
14.
Arch Int Physiol Biochim ; 86(1): 123-34, 1978 Feb.
Artículo en Francés | MEDLINE | ID: mdl-80169

RESUMEN

The blood plasma of Spermestes c. cucullatus (Swainson) analysed electrophoretically on agar shows seven fractions. Immunoelectrophoresis against an antispermestes rabbit serum reveals 16 fractions. Individual variation of the plasma protein fractions is very low, as is also the case for the mobility of the fractions. With age, the alpha-globulins disappear gradually. In the newly hatched bird, the protein variations are more pronounced than in adults. Most important are the lower relative content of albumin and a corresponding relatively higher content of beta- and gamma-globulins. There seems to exist a slight sexual dimorphism in albumin level, which is higher in males than in females. During the reproduction period, both sexes show a fall of the relative concentration of albumin. Injections of gonadotropine hormone produce an increase of the plasma-proteins level and a marked decrease of the relative concentration of albumin. The overall figure is comparable with that of birds in natural breeding condition.


Asunto(s)
Aves/sangre , Proteínas Sanguíneas/metabolismo , Envejecimiento , Animales , Aves/crecimiento & desarrollo , Gonadotropina Coriónica/farmacología , Femenino , Masculino , Reproducción , Albúmina Sérica/metabolismo , Seroglobulinas/metabolismo , Factores Sexuales
15.
Arch Int Physiol Biochim ; 89(4): 365-77, 1981 Nov.
Artículo en Francés | MEDLINE | ID: mdl-6174094

RESUMEN

The plasmic proteinograms got in agar-gel with adult subjects of three species of weavers offer clear similitude to each other and allow only very unusually a separation of the three species. Intraspecific variations in the three species appear on the level of zones a-b-c-d (alpha-globulins). None of these variations could be referred to a particular physiologic state. In the young weavers, we don't meet the beta-gamma-globulins h-i again. In those, the proteins concentration is very low and the haematocrit not very high. The two haemoglobinic fractions are lowly concentrated. Their relative concentration are in relation inverse to the concentrations observed in the grown-up subjects.


Asunto(s)
Aves/sangre , Proteínas Sanguíneas/análisis , Envejecimiento , Animales , Electroforesis en Gel de Agar , Especificidad de la Especie
16.
Schweiz Med Wochenschr ; 123(20): 1027-32, 1993 May 22.
Artículo en Alemán | MEDLINE | ID: mdl-8511534

RESUMEN

Superficial siderosis of the central nervous system (SSC) typically involves slowly progressive ataxia, hypoacusis and dementia, possibly with pyramidal signs and sphincter disturbances in combination with xanthochromic CSF with siderophages. However, there are also atypical oligosymptomatic forms. Before the era of magnetic resonance imaging (MRI), diagnosis was only possible at autopsy. Nowadays a firm diagnosis can be made during life by demonstrating the typical marginal hypointense signal in the T2-weighted images in the cerebrum, brain stem, cerebellum and spinal cord. Contrast-enhanced computed tomography may demonstrate widespread meningeal enhancement, but this sign is not specific for SSC. We present an oligosymptomatic case of SSC with slowly progressive ataxia and slight hypoacusis. The etiology, gross pathological and histopathological findings, differential diagnosis and therapy are discussed.


Asunto(s)
Ataxia/etiología , Encefalopatías Metabólicas/complicaciones , Trastornos de la Audición/etiología , Hemosiderosis/complicaciones , Anciano , Encéfalo/diagnóstico por imagen , Encefalopatías Metabólicas/diagnóstico por imagen , Diagnóstico Diferencial , Humanos , Imagen por Resonancia Magnética , Masculino , Tomografía Computarizada por Rayos X
17.
Schweiz Med Wochenschr ; 126(1-2): 6-14, 1996 Jan 09.
Artículo en Alemán | MEDLINE | ID: mdl-8571113

RESUMEN

Certain of the hepatic porphyrias are classified as belonging to the acute hepatic prophyrias, namely acute intermittent porphyria (AIP), variegate porphyria (VP), hereditary coproporphyria (HCP) and ALA-dehydrase deficiency. The common feature of all acute hepatic porphyrias is the sudden onset of neurological symptoms. The whole syndrome consists of acute abdominal pain crises with autonomic dysfunction, global or focal central nervous system involvement and a predominantly motor polyneuropathy. Mono- or oligosymptomatic manifestations of acute porphyrias occur and are probably underestimated. The laboratory diagnosis of porphyria depends on the measurement of porphyrin precursors in urine, whereas the measurement of porphyrins in urine and feces is essential for evaluation of the porphyria type. Enzyme measurements are used to identify asymptomatic family members whose quantitative excretions of porphyrins are normal. At present the pathogenesis of neurological manifestations of acute porphyrias remains an unsettled question. The major hypotheses are discussed in this paper. The most important precipitating factor in acute hepatic porphyrias is drug ingestion. As many new drugs have not been in use for sufficiently long periods to assess their porphyrogenic activity, it is safer to avoid drugs in patients with porphyria. The most effective treatment of porphyria attacks is the administration of heme. Among the porphyria patients with epileptic seizures requiring antiepileptic medication, treatment with bromides should be taken into consideration.


Asunto(s)
Enfermedades del Sistema Nervioso Autónomo/etiología , Enfermedades del Sistema Nervioso Central/etiología , Porfirias Hepáticas/complicaciones , Abdomen Agudo/complicaciones , Carbohidratos de la Dieta/administración & dosificación , Humanos , Porfirias Hepáticas/diagnóstico , Porfirias Hepáticas/dietoterapia , Porfirinas/análisis , Pronóstico , Síndrome
18.
Anaesthesia ; 51(2): 178-81, 1996 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-8779378

RESUMEN

Several cases have been reported recently in which symptoms suggestive of transient radicular irritation occurred following the use of hyperbaric 5% lignocaine for spinal anaesthesia. We report on three patients in whom we observed similar symptoms attributable to this kind of radicular irritation following uneventful spinal anaesthesia using isobaric 2% lignocaine. All three patients underwent minor gynaecological procedures and developed burning pains in the buttocks within 24 h of surgery. The long-term outcome was not clear for all the patients, but in at least one the pain disappeared.


Asunto(s)
Anestesia Raquidea/efectos adversos , Anestésicos Locales/efectos adversos , Lidocaína/efectos adversos , Dolor/inducido químicamente , Raíces Nerviosas Espinales , Adulto , Femenino , Genitales Femeninos/cirugía , Humanos , Persona de Mediana Edad , Enfermedades del Sistema Nervioso Periférico/inducido químicamente
19.
Ultraschall Med ; 20(4): 137-43, 1999 Aug.
Artículo en Alemán | MEDLINE | ID: mdl-10522355

RESUMEN

AIM: In patients with atherosclerotic extracranial internal carotid artery (ICA-) stenosis the diagnostic value of colour Doppler energy (CDE)-coded duplexsonography was compared to three other methods: continuous wave (cw) Doppler peak systolic frequency (pF), pulsed wave (pw) Doppler peak systolic velocity (pV), and intraarterial digital subtraction angiography. METHODS: In 58 patients who suffered from 60 moderate to severe ICA stenoses, B-mode sonography combined with CDE-coded duplex sonography was applied to measure the extent of the stenosis by determining the residual lumen width. Results were correlated to pF and pV and with various angiographic indices. RESULTS: The determined values of the degree of stenosis were correlated to the measurement of pV (r = 0.441, p < 0.01), but not to pF (r = 0.122, n.s.). The best correlation to angiography was obtained when the linear ICA diameter was compared to the distal common carotid artery (common carotid artery index) (r = 0.214, n.s.). Sensitivity, specificity and diagnostic accuracy were comparable to the different frequency-based measurements, but the positive predictive value was lower. CONCLUSIONS: Determination of the degree of stenosis based on CDE alone is not reliable enough to allow correct diagnosis of severe carotid artery stenosis. In combination with the peak frequency method is's diagnostic value could be improved. This requires verification in a separate study.


Asunto(s)
Arteriosclerosis/diagnóstico por imagen , Arteria Carótida Interna/diagnóstico por imagen , Estenosis Carotídea/diagnóstico por imagen , Ultrasonografía Doppler en Color/métodos , Anciano , Angiografía , Femenino , Humanos , Masculino , Análisis de Regresión , Reproducibilidad de los Resultados , Sensibilidad y Especificidad , Ultrasonografía Doppler Dúplex
20.
Arch Environ Contam Toxicol ; 21(4): 497-504, 1991 Nov.
Artículo en Inglés | MEDLINE | ID: mdl-1759845

RESUMEN

Sea mussels, Mytilus edulis, collected from a relatively unpolluted area of the Eastern Scheldt, were transplanted along contaminated sites of the Western Scheldt for 2 1/2 and 5 months. Several established stress indices were determined such as accumulation of pollutants, adenylate energy charge (AEC), and condition index. Following field exposure, mussels were also subjected to an additional lethal or sublethal stress. The data show that environmental exposure alters the mussel's response to stress, viz., aerial exposure and increased temperature, at the organismal (anoxic survival time), biochemical (AEC), and molecular (heat shock protein synthesis) level. The "stress approach" to assessment of environmental contamination appears to be a promising method to disclose early changes in the organism at a stage when conventional parameters (condition index, AEC) remain still unchanged.


Asunto(s)
Bivalvos/fisiología , Monitoreo del Ambiente , Contaminantes Químicos del Agua/toxicidad , Animales , Metabolismo Energético , Proteínas de Choque Térmico/biosíntesis , Hipoxia/fisiopatología , Contaminantes Químicos del Agua/metabolismo
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