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Published on: December 11, 2019
Lessons from reporting 100,000 Jamaican electrocardiograms
1Department of Medicine, Faculty of Medical Sciences, University of the West Indies, Kingston, Jamaica.
Insights
The Heart Foundation of Jamaica
Area of Science:
- Cardiology
- Public Health
- Epidemiology
Background:
- Hypertension is prevalent in Jamaica, affecting 71% of women and 47% of men.
- A significant portion (13%) of detected hypertension cases were newly diagnosed.
- Obesity is highly prevalent in women (80%), posing a public health challenge.
Purpose of the Study:
- To analyze the findings of the Heart Foundation of Jamaica's screening program.
- To assess the prevalence of hypertension, left ventricular hypertrophy, and ischemic changes.
- To evaluate arrhythmia patterns and identify key risk factors and diagnostic needs.
Main Methods:
- Analysis of data from a hypertension screening program.
- Review of electrocardiographic (ECG) findings over a two-year period for 14,739 patients.
- Long-term observation of arrhythmia prevalence over 15 years.
Main Results:
- Hypertension detected in 71% of women and 47% of men, with 13% new diagnoses.
- Left ventricular hypertrophy found in 18% of hypertensive women and 27% of men.
- Ischemic ECG changes were low (4%), but uncontrolled atrial fibrillation was noted in hypertensive patients.
Conclusions:
- Inadequate blood pressure control is common, and left ventricular hypertrophy is frequent in hypertensive patients.
- ECG screening is crucial for 'silent' ischemia in diabetics and left ventricular hypertrophy in hypertensives.
- Public education on obesity and regular ECG monitoring are recommended for at-risk populations.
Abstract:
The screening programme of the Heart Foundation of Jamaica has found hypertension in 71% of women and 47% of men. Of these patients, 13% were newly discovered hypertensives. Left ventricular hypertrophy was present in 18% of hypertensive women and in 27% of men. Inadequate control of raised blood pressure was a frequent finding. Ischaemic electrocardiographic (ECG) changes were only found in 4% of the 14,739 patients seen in the past two years but this is an underestimation of the prevalence of ischaemic heart disease. Arrhythmias seen over 15 years were usually benign, of sinus origin or ectopics in the absence of heart disease. Uncontrolled atrial fibrillation remains the most serious arrhythmia encountered and usually in hypertensive patients. Obesity found in 80% of women is a problem requiring public education. 'Silent' ischaemia in diabetic and left ventricular hypertrophy in hypertensive patients indicate the need for ECG examination in all newly diagnosed patients with either condition, and annual ECGs thereafter.
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