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        "resumen" => "<p class="elsevierStyleSimplePara elsevierViewall">La esclerosis sist&#233;mica &#40;ES&#41; puede afectar al pericardio&#44; el miocardio&#44; las arterias coronarias&#44; el sistema de conducci&#243;n y las v&#225;lvulas card&#237;acas&#46; La presencia de s&#237;ntomas y signos es de mal pron&#243;stico&#46; Las manifestaciones incluyen disnea&#44; palpitaciones&#44; dolor precordial&#44; s&#237;ncope y datos de insuficiencia card&#237;aca derecha&#46;</p><p class="elsevierStyleSimplePara elsevierViewall">La prevalencia de la enfermedad peric&#225;rdica con manifestaciones cl&#237;nicas var&#237;a entre el 5 y el 16&#37;&#59; con ecocardiograf&#237;a&#44; es del 5&#44;4-41&#37; y en estudios de necropsia&#44; es del 33-77&#44;5&#37;&#46; La afecci&#243;n mioc&#225;rdica caracter&#237;stica de la ES es la fibrosis en parches&#46; El hallazgo patol&#243;gico t&#237;pico es la &#8220;necrosis en banda de contracci&#243;n&#8221;&#46; Las consecuencias importantes de la fibrosis incluyen hipertrofia ventricular izquierda&#44; as&#237; como disfunci&#243;n tanto sist&#243;lica como diast&#243;lica en ambos ventr&#237;culos&#46; La detecci&#243;n en fases tempranas de estas alteraciones es muy importante&#44; sobre todo de la disfunci&#243;n diast&#243;lica&#44; que ocurre mucho antes que la sist&#243;lica&#44; por lo que podr&#237;a predecir el desarrollo de da&#241;o card&#237;aco importante&#46; Se ha descrito la asociaci&#243;n de miositis esquel&#233;tica y card&#237;aca&#46; La miopat&#237;a esquel&#233;tica aumenta el riesgo de insuficiencia card&#237;aca congestiva&#44; arritmias sintom&#225;ticas sostenidas y muerte s&#250;bita de origen card&#237;aco&#46; Los vasos peque&#241;os mioc&#225;rdicos est&#225;n afectados en la ES&#59; las arterias coronarias epic&#225;rdicas no se afectan&#46; Se presentan arritmias&#44; principalmente extras&#237;stoles auriculares y ventriculares&#44; as&#237; como alteraciones de la conducci&#243;n&#46; La afecci&#243;n de las v&#225;lvulas card&#237;acas es m&#237;nima&#44; y la mitral es la que se afecta con mayor frecuencia&#46; Otras alteraciones que se ha comunicado en relaci&#243;n con la ES son la rigidez de las arterias perif&#233;ricas de gran calibre y la afecci&#243;n secundaria del coraz&#243;n por hipertensi&#243;n arterial pulmonar y sist&#233;mica&#46; La afecci&#243;n card&#237;aca es causa importante de morbimortalidad en la ES&#46;</p>"
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Esclerosis sistémica
Afección cardíaca en la esclerosis sistémica
Cardiac involvement in systemic sclerosis
Luis H. Silveira-Torre
Autor para correspondencia
luis_hsil@yahoo.com

Correspondencia: Dr. L.H. Silveira-Torre. Departamento de Bioquímica. Instituto Nacional de Cardiología Ignacio Chávez. Juan Badiano, 1. Colonia Sección XVI. 14080 México DF. México.
Departamento de Bioquímica. Instituto Nacional de Cardiología Ignacio Chávez. México DF. México
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        "resumen" => "<p class="elsevierStyleSimplePara elsevierViewall">La esclerosis sist&#233;mica &#40;ES&#41; puede afectar al pericardio&#44; el miocardio&#44; las arterias coronarias&#44; el sistema de conducci&#243;n y las v&#225;lvulas card&#237;acas&#46; La presencia de s&#237;ntomas y signos es de mal pron&#243;stico&#46; Las manifestaciones incluyen disnea&#44; palpitaciones&#44; dolor precordial&#44; s&#237;ncope y datos de insuficiencia card&#237;aca derecha&#46;</p><p class="elsevierStyleSimplePara elsevierViewall">La prevalencia de la enfermedad peric&#225;rdica con manifestaciones cl&#237;nicas var&#237;a entre el 5 y el 16&#37;&#59; con ecocardiograf&#237;a&#44; es del 5&#44;4-41&#37; y en estudios de necropsia&#44; es del 33-77&#44;5&#37;&#46; La afecci&#243;n mioc&#225;rdica caracter&#237;stica de la ES es la fibrosis en parches&#46; El hallazgo patol&#243;gico t&#237;pico es la &#8220;necrosis en banda de contracci&#243;n&#8221;&#46; Las consecuencias importantes de la fibrosis incluyen hipertrofia ventricular izquierda&#44; as&#237; como disfunci&#243;n tanto sist&#243;lica como diast&#243;lica en ambos ventr&#237;culos&#46; La detecci&#243;n en fases tempranas de estas alteraciones es muy importante&#44; sobre todo de la disfunci&#243;n diast&#243;lica&#44; que ocurre mucho antes que la sist&#243;lica&#44; por lo que podr&#237;a predecir el desarrollo de da&#241;o card&#237;aco importante&#46; Se ha descrito la asociaci&#243;n de miositis esquel&#233;tica y card&#237;aca&#46; La miopat&#237;a esquel&#233;tica aumenta el riesgo de insuficiencia card&#237;aca congestiva&#44; arritmias sintom&#225;ticas sostenidas y muerte s&#250;bita de origen card&#237;aco&#46; Los vasos peque&#241;os mioc&#225;rdicos est&#225;n afectados en la ES&#59; las arterias coronarias epic&#225;rdicas no se afectan&#46; Se presentan arritmias&#44; principalmente extras&#237;stoles auriculares y ventriculares&#44; as&#237; como alteraciones de la conducci&#243;n&#46; La afecci&#243;n de las v&#225;lvulas card&#237;acas es m&#237;nima&#44; y la mitral es la que se afecta con mayor frecuencia&#46; Otras alteraciones que se ha comunicado en relaci&#243;n con la ES son la rigidez de las arterias perif&#233;ricas de gran calibre y la afecci&#243;n secundaria del coraz&#243;n por hipertensi&#243;n arterial pulmonar y sist&#233;mica&#46; La afecci&#243;n card&#237;aca es causa importante de morbimortalidad en la ES&#46;</p>"
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        "resumen" => "<p class="elsevierStyleSimplePara elsevierViewall">Systemic sclerosis &#40;SS&#41; can involve the pericardium&#44; myocardium&#44; conduction system&#44; and cardiac valves&#46; The presence of overt clinical signs of cardiac disease is a poor prognostic sign&#46; Clinical manifestations include dyspnea&#44; palpitations&#44; chest pain&#44; syncope&#44; and symptoms of right heart failure&#46;</p><p class="elsevierStyleSimplePara elsevierViewall">Prevalence of clinically symptomatic pericardial disease is 5-16&#37;&#46; However&#44; ecocardiographic prevalence is 5&#46;4- 41&#37; and at autopsy is 33-77&#46;5&#37;&#46; Patchy fibrosis is the characteristic myocardial finding in SS&#46; Contraction band necrosis is the typical pathological finding&#46; Important complications of fibrosis include left ventricular hypertrophy&#44; as well as systolic and diastolic dysfunction of both ventricles&#46; Early detection of these abnormalities is very important&#44; mainly of the diastolic dysfunction&#44; since it occurs before the systolic dysfunction and can predict important cardiac damage&#46; Association of skeletal myositis with myocardial disease has been described&#46; Patients with skeletal myositis are more likely to develop congestive heart failure&#44; sustained symptomatic arrythmias&#44; and cardiac sudden death&#46; Coronary arteries are normal in systemic sclerosis&#44; but there is no endomyocardial vessel involvement&#46; There is an increased prevalence of arrhytmias&#44; mainly premature atrial and ventricular contractions&#44; as well as conduction system disease&#46; Cardiac valvular involvement is minor in systemic sclerosis&#59; mitral valve is the most frequently affected&#46; Other abnormalities described in this disease include peripheral large vessels stiffness and secondary cardiac involvement due to pulmonary and systemic arterial hypertension&#46; Cardiac involvement confers a high morbi-mortality risk in systemic sclerosis&#46;</p>"
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