Video Experimental Relacionado
Updated: Jan 31, 2026
03:45
Investigating the Pathogenesis of MYH7 Mutation Gly823Glu in Familial Hypertrophic Cardiomyopathy using a Mouse Model
Published on: August 8, 2022
4.3K
Pruebas Genéticas en Fenotipos de Miocardiopatía Hipertrófica
Aakash Bavishi1, Kutaiba Nazif2, Matthew W Martinez2
1University of Illinois Chicago, Chicago, Illinois, USA.
JACC. Case reports
|January 30, 2026
Resumen
La miocardiopatía hipertrófica (MCH) muestra resultados clínicos variados a pesar de mutaciones genéticas idénticas dentro de las familias. Esto resalta la necesidad de pruebas genéticas y evaluación de riesgos personalizada en pacientes con MCH.
Sus antecedentes:
- La miocardiopatía hipertrófica (MCH) es un trastorno genético caracterizado por penetrancia y expresividad variables.
- Las presentaciones clínicas en pacientes con MCH con la misma mutación pueden variar desde asintomáticas hasta muerte súbita cardíaca.
- La comprensión de las influencias genéticas en el fenotipo de la MCH es crucial para el manejo del paciente.
Conclusiones:
- Las mutaciones idénticas de la MCH no garantizan resultados clínicos similares dentro de las familias.
- Las pruebas genéticas son esenciales para identificar la MCH e informar la estratificación del riesgo.
- Un modelo endofenotípico puede capturar mejor la complejidad de la MCH que un modelo puramente monogénico.
Videos de Conceptos Relacionados
01:29Cardiomyopathy III: Hypertrophic Cardiomyopathy
486
Hypertrophic cardiomyopathy, or HCM, is an autosomal dominant genetic disorder characterized by asymmetric left ventricular hypertrophy without ventricular dilation. It is more common in men and is typically diagnosed in young, athletic adults.EtiologyHCM is primarily genetic and is caused by mutations in genes encoding sarcomeric proteins. Researchers have identified over 1400 mutations across at least 11 different genes. Among these, the most frequently occurring mutations are found in the...
486
01:30Cardiomyopathy II: Dilated Cardiomyopathy
563
Dilated cardiomyopathy, or DCM, is a progressive myocardial disorder characterized by ventricular chamber dilation and contractile dysfunction.EtiologyVarious factors can cause DCM, including hypertension and heavy alcohol intake, which contribute to the weakening and enlargement of the heart muscle. Viral infections, such as Coxsackievirus B, adenoviruses, and influenza, can lead to DCM by causing inflammation and damage to heart tissue. Certain chemotherapeutic agents, including daunorubicin,...
563
01:29Cardiomyopathy IV: Restrictive Cardiomyopathy
532
Restrictive cardiomyopathy (RCM) is a rare heart muscle disease characterized by impaired ventricular filling due to stiffened ventricular walls, leading to significant diastolic dysfunction.EtiologyRestrictive cardiomyopathy can arise from both inherited and acquired diseases, many of which are systemic. It is categorized into four main types: infiltrative, storage, non-infiltrative, and endomyocardial diseases.Infiltrative diseases, such as amyloidosis, lead to RCM by depositing amyloid...
532
01:29Cardiomyopathy V: Interprofessional Care
442
Managing cardiomyopathy involves addressing underlying or precipitating causes, treating heart failure with medications, and implementing dietary changes and a balanced exercise and rest regimen.Lifestyle ModificationsCardiomyopathy patients should adopt a low-sodium diet to reduce fluid retention and manage heart failure. A personalized exercise and rest plan helps maintain physical fitness without overstraining the heart. Avoiding alcohol and tobacco is essential to prevent further damage to...
442
01:25Cardiomyopathy I: Introduction and Classification
603
Cardiomyopathy, or CMP, is a group of diseases affecting the myocardial structure, impairing its ability to pump blood effectively. This condition can lead to arrhythmias, heart failure, or sudden cardiac death.Cardiomyopathies are classified into primary and secondary categories:Primary Cardiomyopathy refers to conditions involving only the heart muscle that are often idiopathic (of unknown cause) or genetic. They primarily affect the myocardium without the involvement of other systemic...
603
01:29Cardiomyopathy VI: Nursing Management
354
Assessment: Nursing management of patients with cardiomyopathy begins with a thorough assessment of the patient's history, including a family history of cardiomyopathy or sudden cardiac death, personal history of heart disease, hypertension, diabetes, and any alcohol consumption or drug use.During the physical examination, assess vital signs, look for signs of heart failure (such as edema, jugular venous distention, and cyanosis), auscultate for abnormal heart sounds (like murmurs and gallops),...
354