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Myocardial cell damage in human hypertension
G Pons-Lladó1, M Ballester, X Borrás
1Servei de Cardiologia, Hospital de la Santa Creu i Sant Pau, Barcelona, Spain. gponsl@meditex.es
Journal of the American College of Cardiology
|December 29, 2000
Summary
Hypertension can cause myocardial cell damage, particularly in patients with left ventricular hypertrophy (LVH). This study shows that the severity of this damage correlates with the degree of LVH in hypertensive individuals.
Area of Science:
- Cardiology
- Medical Imaging
- Hypertension Research
Background:
- Left ventricular hypertrophy (LVH) in hypertensive patients, though initially compensatory, can lead to myocellular damage and heart failure.
- Noninvasive methods for detecting myocardial damage are crucial for managing hypertensive heart disease.
Purpose of the Study:
- To investigate myocardial cell damage in patients with systemic hypertension.
- To determine the relationship between myocardial damage and left ventricular hypertrophy (LVH) in these patients.
Main Methods:
- Utilized 111In-labeled monoclonal antimyosin antibodies for imaging myocardial damage in 39 hypertensive patients.
- Categorized patients into three groups based on LVH severity and symptoms.
- Quantified myocardial damage using heart-to-lung antibody uptake ratios.
Main Results:
- Abnormal antimyosin scans, indicative of myocardial damage, were found in 25% of patients with normal left ventricular mass (LVM), 16% with LVH, and 100% with advanced LVH and symptomatic disease.
- A significant correlation (p < 0.001) was observed between the degree of myocardial damage and the magnitude of LVH.
- Multivariate analysis identified LVM index as the primary independent predictor of myocardial antimyosin uptake (r = 0.815; p = 0.001).
Conclusions:
- This study presents the first in vivo evidence of myocyte damage in hypertensive patients.
- The extent of myocardial damage is directly related to the severity of left ventricular hypertrophy.