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Prevalence of left ventricular hypertrophy as assessed by electrocardiogram in treated hypertensive persons in
J P van den Hoogen1, M C van Kruijsdijk, J W van Ree
1Department of General Practice/Family Medicine, Nijmegen University, The Netherlands.
Insights
Left ventricular hypertrophy (LVH) affects 21% of hypertensive patients, increasing cardiovascular risk. It is more common in men, the elderly, and those with high blood pressure.
Area of Science:
- Cardiology
- Hypertension Research
- Diagnostic Electrocardiography
Background:
- Left ventricular hypertrophy (LVH) identified by electrocardiogram (ECG) is linked to increased cardiovascular risks in hypertensive individuals.
- Understanding the prevalence and associated factors of ECG-LVH is crucial for risk stratification.
Purpose of the Study:
- To determine the prevalence of LVH in hypertensive patients using ECG criteria.
- To investigate the relationship between LVH and demographic factors (age, sex) and blood pressure (BP) levels.
Main Methods:
- ECG, BP, treatment, hypertension duration, BMI, and serum cholesterol were recorded.
- LVH dimensions were calculated using the Minnesota Code.
- Logistic regression analysis was employed to identify influencing parameters.
Main Results:
- 21% of hypertensive patients exhibited LVH (with or without repolarization abnormalities).
- LVH without repolarization abnormalities was more prevalent in men.
- LVH with repolarization abnormalities was more common in elderly patients.
- Higher systolic BP (>160 mmHg) and diastolic BP (>105 mmHg) were associated with LVH.
Conclusions:
- Male sex, age over 65, SBP > 160 mmHg, and DBP > 105 mmHg are significant predictors of LVH in hypertensive patients.
- ECG-detected LVH is a prevalent finding in hypertension and is associated with specific demographic and BP characteristics.
Abstract:
Many studies have paid attention to the prevalence of left ventricular hypertrophy (LVH) as assessed by electrocardiogram (ECG) in hypertensive patients. Patients with ECG-LVH show a considerably higher risk of cardiovascular morbidity and mortality than patients without ECG-LVH. This paper describes the prevalence of LVH and the relation between LVH, age, sex and BP. ECG, BP, treatment, duration of hypertension, body mass index and total serum cholesterol were recorded. The dimension of LVH was computed in accordance with the Minnesota Code. One of five hypertensive patients (21%) had LVH with or without repolarisation abnormalities. LVH based on high QRS voltages only was found more often in men. LVH with repolarisation abnormalities was more frequent in elderly patients. LVH was found more often in the highest SBP categories (SBP > 160 mmHg) and in the highest DBP categories (DBP > 105 mmHg). A logistic regression analysis showed the influence on the occurrence of LVH of the following parameters: being male, age > 65 years, SBP > 160 mmHg and DBP > 105 mmHg.