TEST - Genetics and Cardiomyopathies

TEST - Focus on Genetics and Cardiomyopathies

Genetic cardiomyopathy encompasses inherited disorders that affect the heart muscle, altering its structure, wall thickness, or pumping ability. The most common types are Hypertrophic Cardiomyopathy (HCM) and Dilated Cardiomyopathy (DCM). Caused by mutations in genes that regulate heart proteins, these conditions carry risks of arrhythmias, heart failure, and sudden cardiac death

Types and Genetic Causes

Types and Genetic CausesHypertrophic Cardiomyopathy (HCM): Primarily caused by mutations in sarcomere (contractile protein) genes like MYH7 and MYBPC3. It leads to unexplained thickening and stiffening of the left ventricular wall.

Dilated Cardiomyopathy (DCM): Features an enlarged and weakened left ventricle, reducing blood flow. The most frequent genetic cause is a mutation in the TTN gene, which encodes the protein titin.

Arrhythmogenic Right Ventricular Cardiomyopathy (ARVC) & Restrictive Cardiomyopathy (RCM): ARVC involves the replacement of right ventricular muscle with fat/scar tissue, while RCM features rigid, non-stretching walls.Inheritance and TestingMost genetic cardiomyopathies follow an autosomal dominant inheritance pattern, meaning a child has a 50% chance of inheriting the mutated gene if one parent has it. Because disease severity and age of onset vary, healthcare providers recommend clinical evaluations and DNA testing for first-degree relatives of affected individuals.Management and ResourcesTreatment plans vary based on the specific type and severity of the condition. They typically require lifelong monitoring by a cardiologist and may involve medications (e.g., beta-blockers) to reduce heart strain, implantable cardioverter-defibrillators (ICDs) to prevent sudden death, or surgical interventions like a septal myectomy.To better understand inherited risk, learn about specific types, or find a specialist in your area, consider utilizing these resources:Learn more about your risks on the Genetic Cardiomyopathy Consortium portal.Understand the disease progression and treatment options via the American Heart Association guidelines.Review patient-focused information and support resources provided by Cardiomyopathy UK.

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Optional Learning Resources

New: Optional Learning Resources

This course includes optional resources you can use to go further on genetics and cardiomyopathies:

Post-exam
Clinical Pearls
Ask the Expert
Point-of-Care Algorithm
Patient & Family Toolkit
Pedigree Exercise

These are optional resources, and you are not required to complete them to claim your credits. Once you have completed the evaluation, you can claim your credits.

Summary

Availability:

On-Demand

Expires on Dec 07, 2026

Cost:

FREE

Credit Offered:

1.5 CME Credits

1.5 NCPD Credits

1.5 CPE Credits

1.5 AAPA CME Credits

0.15 CEU Credit

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