Structural and Functional Cardiac Remodeling in Hypertension: Pathophysiology and Clinical Implications

Abstract

Yusuf Solak, Macit Kalcık, Abdullah Sarıhan, Oguzhan Celik, Mehmet Mustafa Yılmaz, Osman Karaarslan, Mucahit Yetim, Muhammet Cihat Celik, Lutfu Bekar and Yusuf Karaveliogl

Hypertension induces a broad spectrum of structural and functional alterations in the myocardium collectively defined as cardiac remodeling. Initially, these changes represent adaptive responses to sustained pressure overload aimed at preserving cardiac output through increased wall thickness and normalization of wall stress. However, persistent hemodynamic burden and neurohormonal activation lead to maladaptive remodeling characterized by left ventricular hypertrophy, interstitial fibrosis, microvascular dysfunction, and impaired diastolic relaxation. These structural and molecular alterations are closely linked to the development of heart failure with preserved ejection fraction, atrial fibrillation, and increased susceptibility to ischemia. Contemporary imaging modalities, including echocardiographic strain analysis and cardiac magnetic resonance, have improved the detection of subclinical remodeling and myocardial fibrosis, allowing earlier identification of patients at risk. Beyond mechanical stress, pathways such as the renin– angiotensin–aldosterone system, sympathetic activation, inflammation, and oxidative stress play critical roles in promoting hypertrophy and extracellular matrix expansion. Importantly, evidence suggests that targeted pharmacological interventions may attenuate or partially reverse these changes when initiated early. This narrative review summarizes the mechanisms underlying hypertensive cardiac remodeling and highlights their clinical implications, emphasizing the importance of early detection and therapeutic modulation in preventing progression to overt cardiovascular disease.

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