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Coronary microcirculation in hypertensive heart disease: functional significance and therapeutic implications
1Abteilung für Kardiologie, Pneumologie und Angiologie, Heinrich-Heine-Universität, Düsseldorf.
Insights
Arterial hypertension causes left ventricular hypertrophy, impairing heart function and coronary flow. Treatment should focus on reversing hypertrophy, restoring structure, and improving coronary flow alongside blood pressure control.
Area of Science:
- Cardiology
- Hypertension Research
- Cardiac Physiology
Background:
- Arterial hypertension is a major cause of left ventricular hypertrophy (LVH).
- LVH involves myocyte hypertrophy, interstitial fibrosis, and coronary microcirculation changes.
- This structural remodeling impairs diastolic function and coronary flow reserve, even with normal epicardial arteries.
Purpose of the Study:
- To highlight the structural and functional consequences of left ventricular hypertrophy in arterial hypertension.
- To emphasize the importance of addressing specific aspects of LVH in antihypertensive treatment strategies.
Main Methods:
- Review of existing literature on arterial hypertension and left ventricular hypertrophy.
- Analysis of the impact of structural changes on cardiac function and coronary circulation.
Main Results:
- Left ventricular hypertrophy in hypertension leads to myocyte hypertrophy and interstitial fibrosis.
- Structural alterations affect the coronary microcirculation, reducing coronary flow reserve.
- Diastolic dysfunction occurs despite patent epicardial coronary arteries.
Conclusions:
- Antihypertensive therapy must target the reversal of myocyte hypertrophy.
- Restoring myocardial structure is crucial for improving cardiac function.
- Improving coronary flow reserve should be a key goal in managing hypertensive heart disease.
Abstract:
In arterial hypertension left ventricular hypertrophy comprises myocyte hypertrophy, interstitial fibrosis and structural alterations of the coronary microcirculation. This leads to an impairment of diastolic function of the left ventricle and coronary flow reserve despite normal epicardial arteries. Consequently, antihypertensive treatment should aim at [13] reversing myocyte hypertrophy, [14] restoring myocardial structure and [8] improving coronary flow reserve along with blood pressure normalization.