Hypertrophic cardiomyopathy (HCM) is a genetically mediated myocardial disease predominantly caused by pathogenic mutations in sarcomeric protein genes and characterized by asymmetric left ventricular hypertrophy. Patients with HCM commonly present with dyspnea, chest pain, and exercise intolerance. Sudden cardiac death, progressive heart failure, and thromboembolic events remain the leading causes of mortality and morbidity, substantially impairing quality of life and increasing healthcare burden. Despite advances in understanding the pathophysiology, diagnosis, and management of HCM, significant challenges persist, including etiological heterogeneity and underdiagnosis. At present, dedicated and systematic HCM databases remain lacking in China. Establishing a nationally HCM cohort and disease-specific database is therefore of considerable importance. In alignment with the goals of the "Healthy China 2030" initiative and supported by advances in medical big data technologies. This study aims to construct a comprehensive HCM cohort, evaluate contemporary diagnostic and therapeutic practices and patient prognosis, identify relevant risk factors, and ultimately improve the overall management of patients with HCM.
Study Type
OBSERVATIONAL
Enrollment
3,000
Standard of care
the First Affiliated Hospital of the Air Force Medical University
Xi'an, China/Shaan XI Province, China
MACE
The primary outcome was major adverse cardiovascular events (MACE), defined as a composite of cardiac death, ischemic stroke, systemic embolism, malignant arrhythmia events, non-fatal myocardial infarction, and rehospitalization for heart failure.
Time frame: 1, 6, 12, 24, 36, 60 months
Cardiac death
Incidence of individual components of MACE.
Time frame: 1, 6, 12, 24, 36, 60 months
Ischemic stroke
Incidence of individual components of MACE.
Time frame: 1, 6, 12, 24, 36, 60 months
Systemic embolism
Incidence of individual components of MACE.
Time frame: 1, 6, 12, 24, 36, 60 months
Malignant arrhythmia events
Incidence of individual components of MACE.
Time frame: 1, 6, 12, 24, 36, 60 months
Non-fatal myocardial infarction
Incidence of individual components of MACE.
Time frame: 1, 6, 12, 24, 36, 60 months
Rehospitalization for heart failure.
Incidence of individual components of MACE.
Time frame: 1, 6, 12, 24, 36, 60 months
All-cause mortality
Incidence of all-cause mortality.
Time frame: 1, 6, 12, 24, 36, 60 months
Number of rehospitalizations for heart failure
Total number of rehospitalizations for heart failure during follow-up.
Time frame: 1, 6, 12, 24, 36, 60 months
New-onset atrial arrhythmias
Incidence of new-onset atrial arrhythmias, including atrial tachycardia, atrial flutter, and atrial fibrillation.
Time frame: 1, 6, 12, 24, 36, 60 months
End-stage heart failure
Incidence of end-stage heart failure.
Time frame: 1, 6, 12, 24, 36, 60 months
Heart transplantation
Incidence of heart transplantation.
Time frame: 1, 6, 12, 24, 36, 60 months
Non-obstructive hypertrophic cardiomyopathy progressing to obstructive hypertrophic cardiomyopathy
Incidence of non-obstructive hypertrophic cardiomyopathy progressing to obstructive hypertrophic cardiomyopathy.
Time frame: 1, 6, 12, 24, 36, 60 months
Anxiety/depressive mental disorders
Incidence of anxiety/depressive mental disorders.
Time frame: 1, 6, 12, 24, 36, 60 months
The Kansas City Cardiomyopathy Questionnaire (KCCQ) ≥5-point improvement
Proportion of patients achieving a ≥5-point improvement in KCCQ score from baseline after treatment. The KCCQ Overall Summary Score ranges from 0 to 100, with higher scores indicating better health status.A ≥5-point increase is considered a clinically meaningful improvement.
Time frame: 1, 6, 12, 24, 36, 60 months
BARC 3 or 5 bleeding
Incidence of BARC 3 or 5 bleeding.
Time frame: [1, 6, 12, 24, 36, 60 months]
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