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Search Results: 1 - 10 of 754374 matches for " W.M.A.; Tuinier "
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The enigmatic phenotype: Relevant signs and symptoms in schizophrenia
Wijers,F.W.H.M.; Verhoeven,W.M.A.; Tuinier,S.;
The European Journal of Psychiatry , 2005, DOI: 10.4321/S0213-61632005000400003
Abstract: ever since schizophrenia was conceptualized by kraepelin and bleuler, attempts have been made to rearrange signs and symptoms in order to achieve an useful disease concept with consequences for outcome, prognosis, treatment response and etiology. several procedures were used to describe relevant phenotypes of the disease. in the beginning, famous psychiatrists conceptualized definitions of schizophrenia which was followed by a consensus about the operational criteria of schizophrenia. later, more emphasis was placed on the statistical analyses of symptoms present in patients with psychotic disorders which resulted in a great variety of symptom clusters. in another approach, investigators try to deconstruct psychiatric diagnoses in search for so called endophenotypes of which covert symptoms like cognitive deficits in schizophrenia, are an example. the value of all these endeavours ultimately depends on the external validity which means that a relationship has to be established with the etiology, treatment response and outcome. the premises of all these research efforts is, however, the idea that the pathogenic agent of schizophrenia or a subtype will be found. in this paper an outline of the literature about the ordening of overt and covert symptoms in schizophrenia is presented. it is concluded that the different approaches are essential analogue and that research into the delineation of cognitive deficits and their treatment is at present most promising.
The enigmatic phenotype: Relevant signs and symptoms in schizophrenia
F.W.H.M. Wijers,W.M.A. Verhoeven,S. Tuinier
The European Journal of Psychiatry , 2005,
Abstract: Ever since schizophrenia was conceptualized by Kraepelin and Bleuler, attempts have been made to rearrange signs and symptoms in order to achieve an useful disease concept with consequences for outcome, prognosis, treatment response and etiology. Several procedures were used to describe relevant phenotypes of the disease. In the beginning, famous psychiatrists conceptualized definitions of schizophrenia which was followed by a consensus about the operational criteria of schizophrenia. Later, more emphasis was placed on the statistical analyses of symptoms present in patients with psychotic disorders which resulted in a great variety of symptom clusters. In another approach, investigators try to deconstruct psychiatric diagnoses in search for so called endophenotypes of which covert symptoms like cognitive deficits in schizophrenia, are an example. The value of all these endeavours ultimately depends on the external validity which means that a relationship has to be established with the etiology, treatment response and outcome. The premises of all these research efforts is, however, the idea that the pathogenic agent of schizophrenia or a subtype will be found. In this paper an outline of the literature about the ordening of overt and covert symptoms in schizophrenia is presented. It is concluded that the different approaches are essential analogue and that research into the delineation of cognitive deficits and their treatment is at present most promising.
Interconsulta psiquiátrica en el déficit intelectual: dimensiones, áreas y vulnerabilidad
Verhoeven,W.M.A.; Sijben,A.E.S.; Tuinier,S.;
The European journal of psychiatry (edición en espa?ol) , 2004, DOI: 10.4321/S1579-699X2004000100004
Abstract: varios estudios han demostrado una mayor prevalencia de psicopatología en personas con déficit intelectual (di) que en la población normal. los estudios de campo muestran que la mayoría de pacientes con di padece trastornos psiquiátricos con manifestaciones atípicas. en el presente estudio se estudió la morbilidad psiquiátrica en 285 pacientes con di remitidos consecutivamente. los principales diagnósticos psiquiátricos cie-10 fueron los de episodio depresivo (recurrente), trastorno generalizado del desarrollo (atípico), trastorno bipolar (atípico) y psicosis cicloide. además, en un número importante de pacientes se diagnosticaron trastorno de inestabilidad emocional y fenotipo conductual. se documentó toxicidad por psicotropos con trastornos de conducta en el 15% de los pacientes. un 5% de los pacientes presentó psicosis atípicas, particularmente psicosis cicloides. se defiende la idea de que es preferible un abordaje diagnóstico dimensional en pacientes con di.
Interconsulta psiquiátrica en el déficit intelectual: dimensiones, áreas y vulnerabilidad
W.M.A. Verhoeven,A.E.S. Sijben,S. Tuinier
The European journal of psychiatry (edición en espa?ol) , 2004,
Abstract: Varios estudios han demostrado una mayor prevalencia de psicopatología en personas con déficit intelectual (DI) que en la población normal. Los estudios de campo muestran que la mayoría de pacientes con DI padece trastornos psiquiátricos con manifestaciones atípicas. En el presente estudio se estudió la morbilidad psiquiátrica en 285 pacientes con DI remitidos consecutivamente. Los principales diagnósticos psiquiátricos CIE-10 fueron los de episodio depresivo (recurrente), trastorno generalizado del desarrollo (atípico), trastorno bipolar (atípico) y psicosis cicloide. Además, en un número importante de pacientes se diagnosticaron trastorno de inestabilidad emocional y fenotipo conductual. Se documentó toxicidad por psicotropos con trastornos de conducta en el 15% de los pacientes. Un 5% de los pacientes presentó psicosis atípicas, particularmente psicosis cicloides. Se defiende la idea de que es preferible un abordaje diagnóstico dimensional en pacientes con DI.
Más allá de la corriente dominante: El valor heurístico de la Psicosis Cicloide
Heijden,F.M.M.A. van der; Tuinier,S.; Pepplinkhuizen,L.; Praag,H.M. van; Verhoeven,W.M.A.;
The European journal of psychiatry (edición en espa?ol) , 2002, DOI: 10.4321/S1579-699X2002000100003
Abstract: los intentos para diagnosticar los trastornos psiquiátricos son tan antiguos como la propia medicina y han ido siempre paralelos con su desarrollo científico. los conceptos diagnósticos de la psiquiatría actual están profundamente enraizados en la tradición europea del siglo xix en la que existe una línea de desarrollo alemana y francesa junto con otra neuropsiquiátrica. a pesar de los intentos rigurosos por elaborar diagnósticos médicos acertados, las dificultades fundamentales relacionadas con la selección de signos y síntomas relevantes y la posterior validación de las entidades sindrómicas, todavía persisten. uno de los ejemplos más interesantes es la psicosis cicloide que trasciende a las fronteras estrictas de las actuales taxonomías e introduce signos y síntomas alternantes relacionados con experiencias subjetivas y con trastornos de motilidad distintos de la catatonia. aunque la práctica actual de categorización descriptiva puede ser útil a efectos de comunicación, nosotros propugnamos la aplicación de un modelo multiniveles tanto horizontal como vertical en el proceso de diagnóstico psiquiátrico
Het bestuur van de bovenwindsche eilanden
Mr. W.M.A. Weitjens
Nieuwe West-Indische Gids , 1932,
Abstract:
Chromosomal abnormalities in clinical psychiatry: a report of two older patients
Verhoeven,W.M.A.; Tuerlings,J.H.A.M.; Ravenswaay-Arts,C.M.A. van; Boermans,J.A.J.; Tuinier,S.;
The European Journal of Psychiatry , 2007, DOI: 10.4321/S0213-61632007000300005
Abstract: background and objectives: in clinical psychiatry genetic anomalies are infrequently part of the differential diagnosis, especially in the elderly. two case reports are used to illustrate the relevance of a genetic workup for diagnosis, treatment and prognosis. methods: a female and a male patient, aged 81 and 68 year respectively, were admitted because of psychotic symptoms. despite their relatively low level of intelligence together with autistic-like behaviour in the female patient and dysmorphias in the male patient, a genetic disorder was previously never considered. results: in the female patient a balanced translocation between chromosomes x and 19 was found, while in the male patient a mosaic trisomy 8 was demonstrated. conclusions: genetic analysis is indicated in patients with autism, lower intelligence, unexplained somatic anomalies and dysmorphias.
Metal-polyethyleneimine-activated Carbon Interaction Parameter at Equilibrium Adsorption Capacity
C.Y. Yin,M.K. Aroua,W.M.A.W. Daud
Journal of Applied Sciences , 2010,
Abstract: A simple interaction parameter (IPEI) for adsorption of metal ions on polyethyleneimine (PEI)-impregnated activated carbon (AC) has been determined and compared. It is used to elucidate and compare the degree of interaction between metal and surface of PEI-impregnated AC.
Study of Changes in a Palm-Shell-Based Activated Carbon Characteristics by Nitric Acid
A.H. Houshmand,W.M.A.W. Daud
Journal of Applied Sciences , 2010,
Abstract: A palm-shell-based activated carbon (PSAC) was oxidized with nitric acid solutions at different conditions. A 2-level full factorial design was considered for experimental conditions. Adsorption of nitrogen at 77 K, and Temperature-Programmed Desorption (TPD) were used to study the oxidized PSAC. Although, oxidation by nitric acid decreases the surface area and pore volume of PSAC, however it creates a considerable amount of different oxygen groups on the surface of PSAC.
Production of Palm Shell-Based Activated Carbon with More Homogeniouse Pore Size Distribution
A. Arami-Niya,W.M.A. Wan Daud,F.S. Mjalli
Journal of Applied Sciences , 2010,
Abstract: Oil palm shell as a raw material was used for the preparation of activated carbon adsorbents. The precursor was first activated chemically with small proportion of zinc chloride and phosporic acid and then the prepared samples were treated with CO2 flow at 850°C at different activation time. The samples activated chemically with phosphoric acid showed higher surface area and pore volume compared to the samples activated using zinc chloride as chemical agent, at the same duration. In addition, it was shown that extra physical activation will grantees more developed pore structure. In terms of pore size distribution the combined preparation method resulted in a better and more homogenous pore size distribution than the commercial palm shell based activated carbon.
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