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Comprehensive Echocardiographic Assessment of Right Ventricle Function in a Rat Model of Pulmonary Arterial Hypertension
Published on: January 20, 2023
Inappropriate left ventricular mass changes during treatment adversely affects cardiovascular prognosis in
Maria Lorenza Muiesan1, Massimo Salvetti, Anna Paini
1Department of Medical and Surgical Sciences, University of Brescia, 25100 Brescia, Italy. muiesan@med.unibs.it
Insights
Inappropriate left ventricular mass (LVM) during hypertension treatment increases cardiovascular event risk. Regression of inappropriate LVM improves prognosis, highlighting its importance in managing heart health.
Area of Science:
- Cardiology
- Hypertension Research
- Clinical Medicine
Background:
- Inappropriate left ventricular mass (LVM) is a predictor of cardiovascular (CV) events, irrespective of traditional hypertrophy definitions.
- Understanding LVM changes during treatment is crucial for assessing CV risk.
Purpose of the Study:
- To evaluate the relationship between changes in LVM appropriateness during antihypertensive treatment and subsequent CV prognosis.
- To identify factors independently associated with CV events in hypertensive patients.
Main Methods:
- Prospective study of 436 uncomplicated hypertensive subjects with baseline and follow-up echocardiograms (6+/-3 years apart).
- LVM appropriateness assessed by the ratio of observed LVM to predicted LVM for individual cardiac workload.
- Patients followed for an additional 4.5+/-2.5 years for CV events.
Main Results:
- Inappropriate LVM at baseline was present in 258 patients.
- Event rates varied significantly based on LVM appropriateness changes: persistence of inappropriate LVM (3.18 events/100 patient-years), regression (0.97), development (1.87), and persistence of appropriate LVM (0.81).
- Persistence or development of inappropriate LVM, along with LVH, were independent predictors of CV events (P<0.001).
Conclusions:
- The appropriateness of LVM relative to cardiac workload is a significant prognostic factor in hypertensive patients.
- Changes in LVM appropriateness during antihypertensive therapy impact long-term CV outcomes.
- Monitoring and managing inappropriate LVM is essential for improving CV prognosis in hypertension.
Abstract:
Inappropriate left ventricular mass (LVM; ie, the value of LVM exceeding individual needs to compensate hemodynamic load) predicts the risk of cardiovascular (CV) events, independent of risk factors, either in the presence or in the absence of traditionally defined LV hypertrophy. The relation between changes in appropriateness of LVM during antihypertensive treatment and subsequent prognosis was evaluated in 436 prospectively identified uncomplicated hypertensive subjects, with a baseline and follow-up standard clinical evaluation, laboratory examinations, and echocardiogram (last examination: 6+/-3 years apart), followed for additional 4.5+/-2.5 years. The appropriateness of LVM to cardiac workload was calculated by the ratio of observed LVM to the value predicted for individual sex, height, and stroke work at rest. At baseline, low or appropriate LVM (
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