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Pulsed Wave Doppler Assessment of Diastolic Dysfunction in the ZSF-1 Rat Model of Pulmonary Hypertension Due to Left Heart Disease
Published on: May 22, 2026
Evaluation of left ventricular global function, using Doppler myocardial performance index in patients with systemic
H Sarkar1, M A Siddique, K M Haque
1Department of Cardiology, Bangabandhu Sheikh Mujib Medical University, Shahbag, Dhaka, Bangladesh.
Insights
The Doppler myocardial performance index (Tei index) reveals impaired left ventricular global function in hypertension patients. This index is unaffected by age, aiding treatment strategy in hypertensive individuals.
Area of Science:
- Cardiology
- Echocardiography
- Hypertension Research
Background:
- Systemic hypertension is a prevalent condition affecting cardiovascular health.
- Left ventricular global function assessment is crucial for managing hypertensive patients.
- The Tei index offers a comprehensive measure of myocardial performance.
Purpose of the Study:
- To compare the Tei index in hypertensive patients versus healthy controls.
- To evaluate the Tei index's correlation with left ventricular hypertrophy (LVH).
- To assess the utility of the Tei index in hypertensive populations.
Main Methods:
- Echocardiographic Doppler assessment using the Tei index.
- Comparison between 50 hypertensive patients (16 with LVH, 34 without) and 52 healthy controls.
- Analysis of pulmonary venous flow parameters.
Main Results:
- Significant differences in left ventricular global function (Tei index) between hypertensive patients and controls.
- No significant difference in Tei index between hypertensive patients with and without LVH.
- Increased atrial reversal velocity and duration in hypertensive patients, indicating diastolic dysfunction.
Conclusions:
- The Tei index effectively differentiates hypertensive patients from controls.
- The Tei index is not influenced by age, making it suitable for older hypertensive populations.
- The Tei index may guide treatment strategies and evaluate therapeutic effects in hypertension.
Abstract:
The study was designed to compare the Doppler myocardial performance index (Tei index) between those patients with systemic hypertension with normal populations. 50 patients with hypertension (16 with left ventricular hypertrophy and 34 without hypertrophy) were taken as cases and 52 age & sex matched healthy individuals were taken as controls. Left ventricular global function was calculated using the echocardiographic Doppler index as described by Tei et al. (Tei index). Left ventricular global function differs significantly between the groups. It does not differ significantly between those with left ventricular hypertrophy and without hypertrophy. Pulmonary venous flow parameters revealed significant increase in atrial reversal velocity and also significant lengthening of atrial reversal duration. All of these parameters signify worsening diastolic properties. The Tei index is not affected by increasing age and therefore, is appropriate for evaluating left ventricular global function in hypertensive patients, most of whom are middle aged or older. This index may be useful for determining treatment strategy and evaluating treatment effects.
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