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1.
Br J Haematol ; 174(4): 610-23, 2016 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-27071942

RESUMO

Vitamin K antagonist (VKA) therapy for stroke prevention in atrial fibrillation (AF) requires monitoring of the international normalized ratio (INR). We evaluated the agreement between two INR audit parameters, frequency in range (FIR) and proportion of time in the therapeutic range (TTR), using data from a global population of patients with newly diagnosed non-valvular AF, the Global Anticoagulant Registry in the FIELD-Atrial Fibrillation (GARFIELD-AF). Among 17 168 patients with 1-year follow-up data available at the time of the analysis, 8445 received VKA therapy (±antiplatelet therapy) at enrolment, and of these patients, 5066 with ≥3 INR readings and for whom both FIR and TTR could be calculated were included in the analysis. In total, 70 905 INRs were analysed. At the patient level, TTR showed higher values than FIR (mean, 56·0% vs 49·8%; median, 59·7% vs 50·0%). Although patient-level FIR and TTR values were highly correlated (Pearson correlation coefficient [95% confidence interval; CI], 0·860 [0·852-0·867]), estimates from individuals showed widespread disagreement and variability (Lin's concordance coefficient [95% CI], 0·829 [0·821-0·837]). The difference between FIR and TTR explained 17·4% of the total variability of measurements. These results suggest that FIR and TTR are not equivalent and cannot be used interchangeably.


Assuntos
Fibrilação Atrial/complicações , Coeficiente Internacional Normatizado/métodos , Acidente Vascular Cerebral/prevenção & controle , Vitamina K/antagonistas & inibidores , Idoso , Idoso de 80 Anos ou mais , Sistemas de Apoio a Decisões Clínicas , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Varfarina/uso terapêutico
2.
Arch Cardiol Mex ; 82(1): 1-6, 2012.
Artigo em Espanhol | MEDLINE | ID: mdl-22452859

RESUMO

OBJECTIVE: This study was designed to explore the presence of a prothrombotic state, fibrinolytic dysfunction and inflammation in impaired glucose tolerance subjects, by evaluating serum markers of thrombosis, fibrinolysis and inflammation. METHODS: In 48 consecutive adults, 25 patients with impaired glucose tolerance (nine men and 16 women, 50.0 ± 9.2 years) were compared with 23 control subjects (six men and 17 women, 48.0 ± 11 years). The markers of thrombotic activation used were D-dimer and fibrinogen. Fibrinolysis dysfunction was evaluated with plasminogen activator inhibitor 1 (PAI-1) and the inflammatory marker studied was hs-C reactive protein (hs-CRP). RESULTS: The markers of thrombotic state were significantly higher in patients with impaired glucose tolerance (IGT) than in controls: D dimer (489.6 ± 277.3 vs. 345.8 ± 158.9 ng/mL) (p< 0.01) and fibrinogen (317.7 ± 32.1 vs. 266.7 ± 25.4 mg/dL) (p < 0.0001). Fibrinolytic marker PAI-1 also differed significantly between the two study groups (66.4 ± 30.7 vs. 35.5 ± 31.0 ng/mL) (p < 0.006). However, hs-CRP, as inflammation marker, (0.45 ± 0.62 mg/dL vs. 0.38 ± 0.47) did not differ significantly between the two study groups (<0.28). CONCLUSION: This result suggests the presence of a prothrombotic state with fibrinolytic dysfunction in subjects with impaired glucose tolerance.


Assuntos
Intolerância à Glucose/sangue , Inflamação/sangue , Trombose/sangue , Biomarcadores/sangue , Estudos de Casos e Controles , Estudos Transversais , Feminino , Intolerância à Glucose/complicações , Humanos , Inflamação/complicações , Masculino , Pessoa de Meia-Idade , Trombose/complicações
3.
Arch. cardiol. Méx ; 82(1): 1-6, ene.-mar. 2012. tab
Artigo em Espanhol | LILACS | ID: lil-657940

RESUMO

Objetivo: Este estudio fue diseñado para explorar la presencia de un estado protrombótico, disfunción fibrinolítica e inflamación en sujetos con intolerancia a la glucosa, mediante la evaluación de los marcadores séricos de trombosis, fibrinólisis e inflamación. Métodos: Se estudiaron 48 individuos consecutivos, 25 intolerantes a la glucosa: (nueve hombres y 16 mujeres, 50.0 ±9.2 años) y 23 sujetos control (seis hombres y 17 mujeres, 48.0 ±11 años). Se compararon entre ambos grupos los niveles de dímero-D y fibrinógeno como marcadores de trombosis, el PAI-1 como marcador de fibrinólisis y la proteína C reactiva ultrasensible (PCR-us) como marcador de inflamación. Resultados: En los sujetos intolerantes a la glucosa respecto al grupo control, se observaron diferencias significativas en los marcadores de trombosis: fibrinógeno 317.7 ± 32.1 vs. 266.7 ± 25.4 mg/dL (p<0.0001), dímero-D 489.6 ± 277.3 vs. 345.8 ± 158.9 ng/mL (p<0.01) y en el marcador de fibrinólisis PAI-1 66.4 ± 30.7 vs. 35.5 ± 31.0 ng/mL (p<0.006). En el marcador de inflamación, PCR-us no se observó diferencia significativa, respecto al grupo control 0.45 ± 0.6 vs. 0.38 ± 0.4 mg/dL (p<0.28). Conclusiones: Estos resultados sugieren la presencia de un estado protrombótico con disfunción del sistema fibrinolítico, en sujetos intolerantes a la glucosa.


Objective: This study was designed to explore the presence of a prothrombotic state, fibrinolytic dysfunction and infammation in impaired glucose tolerance subjects, by evaluating serum markers of thrombosis, fibrinolysis and infammation. Methods: In 48 consecutive adults, 25 patients with impaired glucose tolerance (nine men and 16 women, 50.0 ±9.2 years) were compared with 23 control subjects (six men and 17 women, 48.0 ±11 years). The markers of thrombotic activation used were D-dimer and fibrinogen. Fibrinolysis dysfuntion was evaluated with plasminogen activator inhibitor 1 (PAI-1) and the infammatory marker studied was hs-C reactive protein (hs-CRP). Results: The markers of thrombotic state were significantly higher in patients with impaired glucose tolerance (IGT) than in controls: D dimer (489.6 ± 277.3 vs. 345.8 ± 158.9 ng/mL) (p < 0.01) and fibrinogen (317.7 ±32.1 vs. 266.7 ±25.4 mg/dL) (p < 0.0001). Fibrinolytic marker PAI-1 also differed significantly between the two study groups (66.4 ± 30.7 vs. 35.5 ± 31.0 ng/ mL) (p < 0.006). However, hs-CRP, as infammation marker, (0.45 ± 0.62 mg/dL vs. 0.38 ± 0.47) did not differ significantly between the two study groups (<0.28). Conclusion: This result suggests the presence of a prothrombotic state with fibrinolytic dysfunction in subjects with impaired glucose tolerance.


Assuntos
Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Intolerância à Glucose/sangue , Inflamação/sangue , Trombose/sangue , Biomarcadores/sangue , Estudos de Casos e Controles , Estudos Transversais , Intolerância à Glucose/complicações , Inflamação/complicações , Trombose/complicações
6.
Rev. iberoam. trombos. hemost. (Ed. impr.) ; 14(1): 3-8, mar. 2001. tab, graf
Artigo em ES | IBECS | ID: ibc-1478

RESUMO

El objetivo de la terapia de reperfusión es lograr flujo anterógrado temprano, completo y sostenido en la arteria relacionada con el infarto (flujo TIMI grado 3 según la graduación establecida por los investigadores del estudio Thrombolysis in Myocardial Infarction), hecho clave para preservar miocardio y mejorar sobrevida en tantos pacientes como sea posible. La era de la reperfusión en el tratamiento del infarto de miocardio comenzó con el empleo de estreptoquinasa. El avance más importante fue luego la introducción del activador tisular del plasminógeno, inicialmente usando un régimen de administración con dosis estándar y luego un régimen acelerado. Los modernos agentes trombolíticos son claramente más convenientes y pueden ser administrados en bolo único o doble, pero su efectividad es comparable a la del activador tisular del plasminógeno en régimen acelerado. Los inhibidores de las glicoproteínas IIb/IIIa pueden mejorar la reperfusión a nivel tisular en el infarto agudo de miocardio. Los datos angiográficos sugieren fuertemente que abciximab en combinación con un agente trombolítico en dosis reducida representa otro avance trascendente en la terapia de reperfusión. Las estrategias farmacológicas (con aspirina, heparina, fibrinolíticos e inhibidores GP IIb/IIIa), abren rápidamente tanto los vasos epicárdicos como la microvasculatura, pero las intervenciones mecánicas logran reperfusión más completa y sostenida.La terapia combinada combate el estado protrombótico inducido por los agentes trombolíticos y permite el uso de dosis bajas de agentes fibrinolíticos con menor riesgo de hemorragia intracraneal. Quizá la denominación de 'hipótesis de la vasculatura abierta' sea más adecuada que la de 'hipótesis de la arteria abierta' porque la mejor perfusión a nivel tisular se traduce en mejor evolución clínica, independientemente del flujo en la arteria epicárdica. La 'intervención coronaria percutánea facilitada' ofrecería lo mejor de cada estrategia porque combina los aportes de la estrategia farmacológica (mayor velocidad de recanalización de la arteria relacionada con el infarto y mejor función microvascular) con la calidad del flujo lograda con la intervención mecánica (AU)


Assuntos
Humanos , Terapia Trombolítica/tendências , Previsões , Infarto do Miocárdio/tratamento farmacológico , Fibrinolíticos/uso terapêutico
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