hypertrophic cardiomyopathy
Let an agent explain HCM in general terms, relay genetics, types, risks, treatment and family screening from cardiology sources, route collapse, fainting on exertion or chest pain to emergency care, describe the named forms and phenocopies, and distinguish HCM from athlete s heart, hypertensive heart disease, dilated cardiomyopathy and amyloidosis, without diagnosing individuals.
Research draft, second pass
A second pass drafted this model: the structure a model of this thing needs, and what is known about it in the world. The line under this one says how the second half was obtained - researched against sources, or recalled without web access, in which case nothing here was read anywhere and every claim is a lead to verify. Unreviewed either way.
written by Claude from model knowledge without web access - no source was read, every claim is a lead to verify
Researched by: Claude
Purpose and description
Let an agent explain HCM in general terms, relay genetics, types, risks, treatment and family screening from cardiology sources, route collapse, fainting on exertion or chest pain to emergency care, describe the named forms and phenocopies, and distinguish HCM from athlete s heart, hypertensive heart disease, dilated cardiomyopathy and amyloidosis, without diagnosing individuals.
A condition in which the heart muscle, usually of the left ventricle, becomes abnormally thick without another cause such as high blood pressure, most often due to inherited sarcomere gene variants such as in MYH7 and MYBPC3, affecting roughly 1 in 500 people, with forms including hypertrophic obstructive cardiomyopathy, apical hypertrophic cardiomyopathy and infantile forms, and conditions that mimic it, such as glycogen storage, lysosomal storage and mitochondrial diseases with hypertrophic cardiomyopathy; it can cause breathlessness, chest pain, arrhythmias and sudden cardiac death, is managed with medicines including the cardiac myosin inhibitor mavacamten, approved in the United States in 2022, septal reduction and implantable defibrillators, and relatives are offered screening. Collapse needs CPR and a defibrillator immediately.
What it is for: Not applicable; a heart muscle disease.
It can be explain in general terms; relay genetics and family screening; describe named forms; route cardiac emergencies.
Distinguishing features
Inherited
Thickened ventricle
Sudden death risk
Family screening
What it looks like
Not visible externally; seen on echocardiography or MRI as thickened heart walls.
Physical character
prevalence: about 1 in 500 people - commonly cited
common genes: MYH7 and MYBPC3 list
mavacamten FDA approval: 2022 year
wall thickness criterion: 15 mm or more in adults note - typical diagnostic threshold
How it is recognised
Genetic thickening of the heart muscle
Infantile hypertrophic cardiomyopathy, mitochondrial, glycogen storage and lysosomal disease with HCM, apical HCM, hypertrophic obstructive cardiomyopathy
Athlete s heart is adaptive; hypertensive heart disease has a pressure cause; dilated cardiomyopathy thins walls; amyloidosis infiltrates tissue
Related models
is a kind of - in registry terms
is treated with - for high risk
includes -
is contrasted with -
In practice
Families and kinds
obstructive HCM
non-obstructive HCM
apical HCM
infantile HCM
phenocopies such as storage and mitochondrial diseases
Standards and regulation
ESC 2023 cardiomyopathy guidelines
AHA/ACC 2024 HCM guideline
Sports cardiology screening policies
Failure modes and hazards
Missing warning signs of sudden cardiac death
Diagnosing individuals remotely
Overstating sports restrictions without current guidance
Also called
Where this came from
wikidata · CC0 1.0
Drafted structure
Bundle to layer to finding to question, as the second pass will find it: 4 bundles · 8 layers · 8 findings · 16 questions.
Understand What HCM is.
Attribution.
Definition
Definition.
Definition
Definition.
- What is hypertrophic cardiomyopathy, and how does it differ from athlete s heart, hypertensive heart disease, dilated cardiomyopathy and amyloidosis? definition
- Has someone collapsed, fainted during exercise or has chest pain, in which case call emergency services, start CPR and use a defibrillator? boundary
Forms
Named forms.
Forms
Forms.
- What are obstructive, apical and infantile HCM and storage and mitochondrial diseases with HCM? definition
- Which entry fits the specific form? action
Medical Genetics and diagnosis.
Attribution.
Genetics
Genetics.
Genetics
Genetics.
- How is HCM inherited, and how are relatives screened? provenance
- Which references are standard? provenance
Diagnosis
Diagnosis.
Diagnosis
Diagnosis.
- How is HCM diagnosed with ECG, echocardiography and MRI? provenance
- Which sources are cited? provenance
Treatment Treatment.
Regulation.
Therapy
Medicines and procedures.
Therapy
Therapy.
- How are beta blockers, myosin inhibitors and septal reduction used, in general terms? provenance
- Which entry fits mavacamten? action
Sudden death
Sudden death prevention.
Sudden death
Sudden death.
- How do guidelines assess sudden death risk and ICD use? provenance
- Which entry fits sudden cardiac death? action
Context Sport and support.
Context.
Sport
Sport participation.
Sport
Sport.
- How have sports guidelines for people with HCM changed, with positions attributed? provenance
- Is the presentation current and attributed? boundary
Support
Support.
Support
Support.
- Which organisations support families affected by cardiomyopathy? provenance
- Which entry fits Cardiomyopathy UK? action
What the second pass must settle
- Should phenocopies be separate entries?
- How should cardiology guidelines be linked?
- How should new therapies be kept current?