Estasis intraventricular y riesgo tromboembólico en pacientes con miocardiopatía dilatada no isquémica
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2025
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01/07/2025
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Universidad Complutense de Madrid
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Los ictus cardioembólicos son una de las complicaciones más devastadoras de los pacientes con miocardiopatía dilatada no isquémica (MCDNI). Los pacientes con esta enfermedad tienen un riesgo de ictus de 3 a 8 veces mayor respecto a la población general, y presentan una prevalencia de hasta el 30% de infartos cerebrales silentes (ICS). Estos últimos constituyen un potente marcador de riesgo tanto de ictus clínico como de mortalidad global en estudios poblacionales, y son causantes de importante invalidez vinculada a deterioro cognitivo, demencia y depresión. Sin embargo, los ensayos clínicos de prevención primaria del ictus en estos pacientes han tenido un resultado neutro, dado que el beneficio de la anticoagulación se contrarresta por un incremento de las complicaciones hemorrágicas. La trombosis mural intraventricular es un factor de riesgo de sufrir eventos cardioembólicos. En pacientes con MCDNI se produce una estasis del flujo que acompaña al remodelado ventricular y a la disfunción miocárdica, uno de los pilares fundamentales de la tríada de Virchow de la trombosis. Esta estasis sanguínea, favorece la formación de pequeños trombos intracavitarios entre las trabéculas del ventrículo izquierdo (VI) que pueden embolizar distalmente...
Cardioembolic stroke is one of the most devastating complications of non-ischemic dilated cardiomyopathy (NIDCM). Patients with NIDCM show an annual incidence of stroke 3 to 8 times higher than the age-matched population; and these patients have high prevalence up to 30% of silent brain infarcts (SBI). SBI are highly sensitive predictors of clinical stroke and mortality in population studies, and a documented source of disability associated to cognitive impairment, dementia and depression. However, in clinical trials of primary prevention, the benefits of anticoagulation were neutralized by the risk of bleeding.Intraventricular thrombosis is a known risk factor of cardioembolic events. Based on Virchow triad of thrombosis, global and regional left ventricle (LV) chamber abnormalities, as the ones found in NIDCM, induce an alteration in the physiological blood flow transit inside the chamber that may lead to regions of increased blood stasis and the formation of small cloths which can embolize...
Cardioembolic stroke is one of the most devastating complications of non-ischemic dilated cardiomyopathy (NIDCM). Patients with NIDCM show an annual incidence of stroke 3 to 8 times higher than the age-matched population; and these patients have high prevalence up to 30% of silent brain infarcts (SBI). SBI are highly sensitive predictors of clinical stroke and mortality in population studies, and a documented source of disability associated to cognitive impairment, dementia and depression. However, in clinical trials of primary prevention, the benefits of anticoagulation were neutralized by the risk of bleeding.Intraventricular thrombosis is a known risk factor of cardioembolic events. Based on Virchow triad of thrombosis, global and regional left ventricle (LV) chamber abnormalities, as the ones found in NIDCM, induce an alteration in the physiological blood flow transit inside the chamber that may lead to regions of increased blood stasis and the formation of small cloths which can embolize...
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Tesis inédita de la Universidad Complutense de Madrid, Facultad de Medicina, leída el 01-07-2025












