Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 20 de 21
Filtrar
Mais filtros

País/Região como assunto
Tipo de documento
País de afiliação
Intervalo de ano de publicação
1.
Rev Esp Enferm Dig ; 114(10): 599-604, 2022 10.
Artigo em Inglês | MEDLINE | ID: mdl-35086339

RESUMO

BACKGROUND: Gastrointestinal bleeding (GIB) is a common adverse event related to anticoagulation therapy. However, evidence comparing the severity, etiology and outcome of GIB in patients taking direct oral anticoagulants (DOAC) vs. vitamin K antagonists (VKA) is scarce. AIMS: To evaluate the severity, etiology and outcomes of GIB in patients under DOACs compared to VKA. METHODS: Patients under oral anticoagulant therapy admitted to the emergency department with acute GIB were prospectively recruited from July 2016 to January 2018 at a tertiary referral hospital. Demographic and clinical outcome were obtained from medical records. Severity of the GIB event was classified as mild, major or severe according to clinical presentation and the type of support needed. Etiology and location of bleeding, number of packed red blood cells transfused (PRBC) and length of hospital stay were recorded until discharge or in-hospital death. RESULTS: A total of 208 patients with acute GIB under oral anticoagulant treatment were recruited: 119 patients were on VKA and 89 patients on DOAC with similar characteristics. Thirty-one patients had severe GIB; 134 major and 43 mild, with no differences in severity, number of PRBC and length of hospital stay between the groups. Peptic disease was the most frequent etiology of GIB in patients on VKA (20.2 % vs. 13.6%, p=0.20). Diverticular bleeding was the most frequent adverse event in patients on DOAC (14.3% vs. 24.8%, p= 0.056). CONCLUSIONS: Severity and clinical outcomes of GIB are similar between patients on DOAC and patients on VKA, regardless of etiology of GIB.


Assuntos
Anticoagulantes , Hemorragia Gastrointestinal , Doença Aguda , Administração Oral , Anticoagulantes/uso terapêutico , Fibrinolíticos/uso terapêutico , Hemorragia Gastrointestinal/tratamento farmacológico , Hemorragia Gastrointestinal/terapia , Mortalidade Hospitalar , Humanos , Vitamina K
2.
Haematologica ; 105(2): 508-518, 2020.
Artigo em Inglês | MEDLINE | ID: mdl-31197069

RESUMO

Readthrough therapy relies on the use of small molecules that enable premature termination codons in mRNA open reading frames to be misinterpreted by the translation machinery, thus allowing the generation of full-length, potentially functional proteins from mRNA carrying nonsense mutations. In patients with hemophilia A, nonsense mutations potentially sensitive to readthrough agents represent approximately 16% of the point mutations. The aim of this study was to measure the readthrough effect of different compounds and to analyze the influence of premature termination codon context in selected nonsense mutations causing hemophilia A. To this end, primary fibroblasts from three patients with hemophilia A caused by nonsense mutations (p.W1586X, p.Q1636X and p.R1960X) and Chinese hamster ovary (CHO) cells transfected with 12 different plasmids encoding mutated F8 (p.Q462X, p.Q1705X, p.Q1764X, p.W274X, p.W1726X, p.W2015X, p.W2131X, p.R1715X, p.R1822X, p.R1960X, p.R2071X and p.R2228X) were treated with gentamicin, geneticin, PTC124, RTC13 or RTC14. Responses were assessed by analyzing not only F8 mRNA expression and FVIII biosynthesis (FVIII antigen by ELISA, western blot and immunofluorescence) but also the FVIII activity (by chromogenic assay). In the patients' fibroblasts, readthrough agents neither stabilized F8 mRNA nor increased FVIII protein or activity to detectable levels. In CHO cells, only in five of the 12 F8 variants, readthrough treatment increased both FVIII antigen and activity levels, which was associated with a reduction in intracellular accumulation of truncated forms and an increase in full-length proteins. These results provide experimental evidence of genetic context dependence of nonsense suppression by readthrough agents and of factors predicting responsiveness.


Assuntos
Códon sem Sentido , Hemofilia A , Animais , Células CHO , Cricetinae , Cricetulus , Hemofilia A/tratamento farmacológico , Hemofilia A/genética , Humanos , RNA Mensageiro/genética
3.
Blood Coagul Fibrinolysis ; 34(1): 79-81, 2023 Jan 01.
Artigo em Inglês | MEDLINE | ID: mdl-36165074

RESUMO

Our report shows a case of primary light-chain amyloidosis in a young patient that reflects the potential severity of bleeding diathesis associated with this plasma cell dyscrasia and the difficulty of diagnosis when only hemorrhagic manifestations are present at the onset of disease. The patient presented with recurrent and severe muscular bleeding secondary to associated acquired von Willebrand disease and fibrinolysis dysfunction. Treatment with bortezomib-cyclophosphamide and sequential hematopoietic stem cell transplantation solved coagulation alterations. On the basis of our case, we review previous reports and discuss the potential mechanism of dysfunction of coagulation in light-chain amyloidosis.


Assuntos
Amiloidose , Transtornos Hemorrágicos , Doenças de von Willebrand , Humanos , Fibrinólise , Suscetibilidade a Doenças , Amiloidose/complicações , Hemorragia/etiologia
4.
Minerva Anestesiol ; 88(3): 156-165, 2022 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-35072429

RESUMO

Factor XIII (FXIII) is the final factor in the coagulation cascade. It converts soluble fibrin monomers into a stable fibrin clot, prevents premature degradation of fibrin, participates in wound healing, and helps prevent the loss of the endothelial barrier function. FXIII deficiency is believed to be rare, and this may explain why clinicians do not routinely take it into consideration. Congenital FXIII deficiency is a rare disease with a reported prevalence of 1 per million. However, the prevalence of acquired FXIII deficiency is much higher. Acquired forms have been described in patients with decreased hepatic or bone marrow synthesis, overconsumption and increased degradation by autoantibodies. This review offers guidance on how to suspect and diagnose FXIII deficiency in both the preoperative consultation and different surgical settings. We also analyze current scientific evidence in order to clarify when and why this clinical situation should be suspected, and how it may be treated.


Assuntos
Deficiência do Fator XIII , Fator XIII , Coagulação Sanguínea , Perda Sanguínea Cirúrgica , Fator XIII/metabolismo , Fator XIII/uso terapêutico , Deficiência do Fator XIII/complicações , Deficiência do Fator XIII/diagnóstico , Deficiência do Fator XIII/terapia , Fibrina/metabolismo , Fibrina/uso terapêutico , Humanos
5.
Haematologica ; 93(7): 1091-4, 2008 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-18403393

RESUMO

Hemophilia A is an X-linked recessive disorder caused by a lack or decrease of factor VIII activity. Its socio-economic impact is high given its high bleeding expression and treatment cost. Our aim was to establish the mutation of each patient to improve family management. A total of 116 unrelated families with severe and moderate hemophilia A were involved. Non-carriers of intron 22 and intron 1 rearrangements were included in F8 gene screening. Intron 1 and 22 inversion frequencies were 3% and 52.5% respectively. Putative mutations were identified in all the families; 38 were new. The cumulative inhibitor incidence was 22%. Approximately half the families carry non-recurrent mutations, which were unique in around one third. Harmful effects for mutations predicting null alleles are expected. Missense mutation consequences are not easily predictable, despite the help of some bio-informatics tools.


Assuntos
Fator VIII/genética , Hemofilia A/diagnóstico , Hemofilia A/genética , Inversão Cromossômica , Cromossomos Humanos X , Análise Mutacional de DNA , Saúde da Família , Feminino , Testes Genéticos , Heterozigoto , Humanos , Íntrons , Masculino , Mutação , Mutação de Sentido Incorreto , Fenótipo
7.
Rev. esp. enferm. dig ; 114(10): 599-604, octubre 2022. tab
Artigo em Inglês | IBECS (Espanha) | ID: ibc-210775

RESUMO

Background: gastrointestinal bleeding (GIB) is a commonadverse event related to anticoagulation therapy. However,evidence comparing the severity, etiology and outcome ofGIB in patients taking direct oral anticoagulants (DOAC) vs.vitamin K antagonists (VKA) is scarce.Aim: to evaluate the severity, etiology and outcomes of GIBin patients under DOACs compared to VKA.Methods: patients under oral anticoagulant therapy admitted to the emergency department with acute GIB wereprospectively recruited from July 2016 to January 2018 ata tertiary referral hospital. Demographic and clinical out comes were obtained from medical records. GIB severitywas classified as mild, major, or severe according to theclinical presentation and type of support needed. Etiologyand location of bleeding, number of packed red blood cells(PRBC) transfused, and length of hospital stay were recorded until discharge or in-hospital death.Results: a total of 208 patients with acute GIB under oralanticoagulant treatment were recruited: 119 patients wereon VKA and 89 patients on DOAC, with similar characteristics. Thirty-one patients had severe GIB; 134 had major and43 had mild GIB, with no differences in severity, numberof PRBC, and length of hospital stay between the groups.Peptic disease was the most frequent etiology of GIB inpatients on VKA (20.2 % vs. 13.6 %, p = 0.20). Diverticularbleeding was the most frequent adverse event in patientson DOAC (14.3 % vs. 24.8 %, p = 0.056).Conclusions: severity and clinical outcomes of GIB aresimilar between patients on DOAC and patients on VKA,regardless of GIB etiology. (AU)


Assuntos
Humanos , Doença Aguda , Administração Oral , Anticoagulantes/uso terapêutico , Fibrinolíticos/uso terapêutico , Mortalidade Hospitalar , Vitamina K , Hemorragia Gastrointestinal/tratamento farmacológico , Hemorragia Gastrointestinal/terapia
8.
Rev. méd. Hosp. Gen. Méx ; 62(4): 263-72, oct.-dic. 1999. ilus
Artigo em Espanhol | LILACS | ID: lil-276270

RESUMO

Dentro de la teoría general de los esquemas se incluye la elaboración de mapas conceptuales, que se utilizan como un recurso didáctico importante a todos los niveles de enseñanza-aprendizaje, por lo que su empleo en las escuelas de medicina pueden tener gran aceptación. Los mapas conceptuales se van a formar con nodos que son los conceptos o ideas principales, ordenados jerárquicamente y unidos por líneas de relación, rutas o conexiones. La elaboración del mapa conceptual, va precedida de una cuidadosa lectura de comprensión del o de los textos básicos, de donde se extraerán los conceptos que conformarán una lista de ellos. Para esto se destacarán en el texto subrayándolos. Esta lectura permite comprender el tema, sin lo cual no es posible la construcción del mapa. Una vez formada la lista de conceptos se evaluarán, para formar grupos a los que se dará una jerarquía según su importancia y un orden secuencial o convencional. Dentro de cada grupo el orden de los conceptos será de acuerdo a su trascendencia, que es mayor cuando abarcan o engloban a otros menos complejos. Los grupos de conceptos se rodean de una elipse que les da realce y los destaca para subrayar su importancia. Establecido el orden de los conceptos que integran el mapa, siempre bajo una jerarquía que supedita los menos extensos dentro de los que tienen mayor connotación, se obtiene un panorama sobre un tema específico. Que se completa al establecer las relaciones entre los grupos de conceptos a través de lo que se ha denominado palabras enlace. Terminado el mapa se está en aptitud de leerlo o hacer una descripción escrita que revela el grado de aprendizaje del tema


Assuntos
Aprendizagem , Ensino , Formação de Conceito
10.
Analecta Historico Medica ; Analecta Historico Medica;22(2)(2): 449-453, 2004.2004.
Artigo em Espanhol | HISA (história da saúde) | ID: his-12918

RESUMO

Presenta algunos antecedentes de la Gastroenterología en México e señala algunos datos biográficos del Dr. Eduardo Lamicq y Díaz.(AU)


Assuntos
Gastroenterologia/história , Publicações/história , México , História da Medicina
12.
Rev. méd. Hosp. Gen. Méx ; 60(2): 75-83, abr.-jun. 1997.
Artigo em Espanhol | LILACS | ID: lil-225119

RESUMO

Iatrogenia y error son términos con significado diferente. No son sinónimos. Iatrogenia es un daño producido por unapalabra, droga, procedimiento médico o quirúrgico, pero que el médico administra, o realiza, con una indicación correcta, con un criterio justo; sin embargo, produce molestias o enfermedad, de lo cual el médico tiene conciencia y advierte al paciente y a su familia, que pueden escoger el procedimiento o terapéutica propuesto con todas sus ventajas y riesgos. Error es un equívoco, está dentro de la ignorancia, no puede ser iatrogenia porque es lo opusto a la acción médica. El expediente clínico orientado por problemas (Weed) abarca las áreas de asistencia, docencia e investigación, involucra la superación profecional del médico y sus colaboradores. Estimula su trabajo y le brinda la satisfacción de conducir su labor en un marco metodología científica, con un control de calidad que le permite alcanzar metas de excelencia que están en razón inversa a sus errores, cuya detección, corrección y prevención van de derivar en un adecuado y justo sistema de normas de evaluación, en que todos los integrantes del equipo de salud se comprometen en beneficio del paciente, como parte primordial de su profeción dentro de una cultura de servicio


Assuntos
Conhecimentos, Atitudes e Prática em Saúde , Doença Iatrogênica , Erros de Diagnóstico , Ética Médica
14.
Rev. méd. Hosp. Gen. Méx ; 56(4): 157-60, oct.-dic. 1993. ilus
Artigo em Espanhol | HISA (história da saúde) | ID: his-10316

RESUMO

Se comenta brevemente el Dictamen emitido en 1881 por los Dres. Rafael Lavista, Adrián Segura y Lic. José Y. Limantour, Sobre la conveniencia de establecr un Hospital General en la Ciudad de México, para substituir a los Hospitales de San Andrés, Juárez, morelos y de la Infancia, construyendo un edificio moderno, con materiales económicos, resistentes, impermeables y fáciales de asear (sistema de construcción del Ing. Follet)(AU)


Assuntos
História da Medicina , Hospitais/história , Arquitetura Hospitalar/história , Saúde Pública/história , México
15.
Rev. méd. Hosp. Gen. Méx ; 56(4): 157-60, oct.-dic. 1993. ilus
Artigo em Espanhol | LILACS | ID: lil-134987

RESUMO

Se comenta brevemente el Dictamen emitido en 1881 por los Dres. Rafael Lavista, Adrián Segura y Lic. José Y. Limantour, Sobre la conveniencia de establecr un Hospital General en la Ciudad de México, para substituir a los Hospitales de San Andrés, Juárez, morelos y de la Infancia, construyendo un edificio moderno, con materiales económicos, resistentes, impermeables y fáciales de asear (sistema de construcción del Ing. Follet)


Assuntos
História da Medicina , Hospitais/história , Manuscrito Médico/história , Hospitais/normas , Arquitetura Hospitalar/história
16.
Rev. méd. IMSS ; 34(1): 81-8, ene.-feb. 1996. tab, ilus
Artigo em Espanhol | LILACS | ID: lil-202984

RESUMO

Los estudios genéticos de familias con enfermedad poliquística renal autosómica son escasos, no obstante que es una de las alteraciones hereditarias más frecuentes. Este padecimiento se debe a una mutación en el genoma del locus PKD1 localizado en el brazo corto del cromosoma 16. Esta alteración se ha calculado en una proporción de 1:1000. Se informa de seis pacientes pertenecientes a una familia mexicana studiada en un lapso de 45 años. Existe un periodo muy largo asintomático entre el principio del padecimiento y la etapa final. Después de los 30 años aumenta el diagnóstico de los quistes tanto en número como en tamaño. Para el diagnóstico, es de gran utilidad el ultrasonido como procedimiento fácil, económico y que emplea energía no ionizante. El tratamiento quirúrgico temprano de los quistes renales previene o retarda la etapa final de insuficiencia renal crónica.


Assuntos
Pessoa de Meia-Idade , Humanos , Masculino , Feminino , Insuficiência Renal/diagnóstico , Hepatomegalia/diagnóstico , Hepatopatias/diagnóstico , Rim Policístico Autossômico Dominante/genética
17.
Cir. & cir ; 55(3): 103-7, mayo-jun. 1988.
Artigo em Espanhol | LILACS | ID: lil-118888

RESUMO

Ciento cinco enfermos con alcoholismo intenso y crónico, abstinencia para bebidas alcohólicas no menor de dos meses previos a su estudio, fueron examinados a través de historia clínica, radiología, endoscopia y biopsia gástrica, bajo la hipótesis de que el alcohol puede producir en el estómago lesiones permanentes o progresivas. Desde el punto de vista de historia clínica, se detectaron 98 con diversa sintomatología y signología y sólo siete asintomáticos. La radiología evindenció alteraciones en 82, la endoscopia y estudios histológicos en 90. Se encontró una elevada frecuencia de insuficiencia de cardias, con o sin hernia hiatal, asi como píloro estrecho, condiciones ambas, en que el alcohol puede tener un papel importante, tanto funcional como de alteración morfológica. la ictericia y ascitis indicaron hepatopatía grave concomitante. El 30% presentaron metaplasia intestinal, lo que obliga a vigilarlos por indicar un riesgo alto de posibilidad futura de cáncer gástrico. El hallazgo de Campylobacter pyloridis no cuenta con bases firmes para atribuirle un papel etiológico en las gastritis activas o úlceras pépticas. Dentro de la problemática del alcoholismo, con gran trascendencia socioeconómica, la gastropatía alcohólica destaca por su frecuencia y complicaciones. Se concluye que la condición principal para el tratamiento del enfermo etílico es la abstinencia de bebidas alcohólicas.


Assuntos
Humanos , Masculino , Feminino , Adulto , Pessoa de Meia-Idade , Alcoolismo/classificação , Gastropatias/classificação , Alcoolismo , Alcoolismo/diagnóstico , Gastropatias/história
SELEÇÃO DE REFERÊNCIAS
DETALHE DA PESQUISA