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Patient Directed Recording of a Bipolar Three-Lead Electrocardiogram using a Smartwatch with ECG Function
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Frequency of Electrocardiogram-Defined Cardiac Conduction Disorders in a Multi-Institutional Primary Care Cohort
Julian S Haimovich1,2,3, Paolo Di Achille4, Victor Nauffal3,5
1Department of Medicine, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts, USA.
JACC. Advances
|August 12, 2024
Summary
Cardiac conduction disorders are common, particularly in older men. Older age and myocardial infarction are key risk factors, highlighting the need for early diagnosis and prevention in primary care settings.
Area of Science:
- Cardiology
- Epidemiology
- Primary Care Medicine
Background:
- Cardiac conduction disorders contribute significantly to patient morbidity.
- Understanding their epidemiology and risk factors is crucial for early diagnosis and prevention.
- This study addresses the need for contemporary data on these disorders.
Purpose of the Study:
- To determine the current frequency of electrocardiogram (ECG)-defined cardiac conduction disorders.
- To identify associated risk factors in a large, multi-institutional primary care population.
Main Methods:
- Analysis of 189,163 adults with longitudinal primary care data (2001-2019).
- Conduction disorders identified using curated ECG diagnostic terms.
- Multivariable proportional hazards regression used to assess clinical risk factors.
Main Results:
- Overall prevalence: 27% in men, 15% in women.
- Incidence: 8.78 events/1,000 person-years in men vs. 4.34 in women.
- Significant associations found with older age and myocardial infarction.
Conclusions:
- Cardiac conduction disorders are prevalent in primary care, especially in older adults.
- Cardiovascular risk factors like older age and prior myocardial infarction increase risk.
- Findings emphasize the importance of risk factor management and early detection.
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