Various diagnostic methods have been used to evaluate hypertensive patients under physical and pharmacological stress. Several studies have shown that exercise hypertension has an independent, adverse impact on outcome; however, other prognostic studies have shown that exercise hypertension is a favorable prognostic indicator and associated with good outcome. Exercise hypertension may be encountered as a warning signal of hypertension at rest and future hypertensive left ventricular hypertrophy. The results of diagnostic stress tests support that hypertensive response to exercise is frequently associated with high rate-pressure product in hypertensives. In addition to the observations on high rate-pressure product and enhanced ventricular contractility in patients with hypertension, evaluation of myocardial contractility by Doppler tissue imaging has shown hyperdynamic myocardial function under pharmacological stress. These recent quantitative data in hypertensives suggest that hyperdynamic myocardial function and high rate-pressure product response to stress may be related to exaggerated hypertension, which may have more importance than that it has been already given in clinical practice.
1 March 2012 in Journal of Cardiovascular Medicine
Blockage on midwall mechanics and myocardial dynamics in hypertensive patients with LVH. Methods Angiotensin 2 type 1 receptor blocker (valsartan 80–160 mg) was administered to 38 previously untreated hypertensive patients with LVH for 6 months. Left ventricular midwall mechanics and tissue Doppler velocities were measured at baseline and at the end of the study. Results : Mean blood pressure was reduced from 152 ± 14/92 ± 8 to 131 ± 14/83 ± 9 mmHg (P < 0.05). Left ventricular mass index was decreased from 135 ± 15 to 114 ± 14 g/m2 (P < 0.001). Midwall fractional shortening was increased from 19.0 ± 4 to 22.4 ± 3% (P < 0.05). Circumferential end-systolic wall stress was decreased from 131 ± 44 to 119 ± 37 × 103 dyn/cm2 (P < 0.05). Left ventricular interventricular septal myocardial tissue peak systolic velocity was increased from 6.7 ± 1 to 8.1 ± 0.9 cm/s (P < 0.001) and lateral wall myocardial tissue peak systolic velocity was increased from 7.5 ± 1 to 9.0 ± 1 cm/s (P < 0.001), and E/Em ratio was significantly decreased (11.0 ± 0.3 to 8.90 ± 0.1, P < 0.05) with 6-month valsartan therapy. Conclusion This study suggests that valsartan exhibits not only blood pressure-lowering qualities but also cardioprotective actions in patients with hypertension because it enhances regression of LVH and improves left ventricular myocardial contractility and relaxation....
30 August 2023 in European Journal of Preventive Cardiology
Fatih Yalçin, Boran Çağatay, Nagehan Küçükler, Theodore P Abraham; Geomeric and functional aspects in Hypertension and Takotsubo: Importance of Basal Septal Hyp
Background: Hemodynamic overload induces left ventricular remodeling and heart failure across various clinical presentations. While geometric remodeling is classically associated with increased vascular resistance in hypertension, distinct patterns emerge under the mechanical stress of aortic stenosis (AS). Concept: The “Stress Septal Sign” (Triple S) represents a marker of stress-mediated hemodynamic overload driven by diverse stimuli, ranging from mechanical stress in AS to emotional triggers in acute stress cardiomyopathy. Within this spectrum, Stressed Heart Morphology describes a specific phenotype characterized by a predominant and hyperdynamic LV septal base. Results: Chronic hemodynamic stress in severe AS results in prominent basal septal hypertrophy. This remodeling is characterized by distinct tissue energetics: hypermetabolic activity at the basal septum contrasted with reduced metabolic activity or hypokinesis in the apical regions. These findings on myocardial geometry, function, and energetics align with the adaptive phase of LV remodeling. Conclusions: The presence of adaptive myocardial basal tissue suggests an advanced remodeling stage that may require timely therapeutic intervention in severe AS. Therefore, identifying these specific tissue characteristics offers a unifying imaging paradigm (Triple S) for assessing cardiac stress, independent of the primary etiology.
Takotsubo Cardiomyopathy (TTC), often referred to as stress-induced or “broken heart” syndrome, is characterized by transient left ventricular dysfunction predominantly involving apical hypokinesia and basal hyperkinesia in the absence of obstructive coronary artery disease. Traditionally viewed as an acute and reversible phenomenon, accumulating evidence suggests that TTC may emerge from a preexisting myocardial substrate shaped by chronic stress and hemodynamic loading. Basal Septal Hypertrophy (BSH), a morphological finding commonly observed in elderly, hypertensive, or emotionally stressed individuals, has been increasingly recognized in patients with TTC. This hypertrophic pattern, often accompanied by dynamic contractile gradients and regional perfusion mismatch, reflects a broader adaptive remodeling process conceptualized as Stressed Heart Morphology (SHM). SHM encompasses the structural and functional myocardial responses to cumulative neurohormonal and mechanical stress, with BSH representing a key imaging marker within this spectrum. Advanced echocardiographic techniques, such as tissue Doppler imaging, speckle-tracking strain analysis, and stress echocardiography, consistently reveal overlapping features between SHM and TTC, including basal hyperkinesis, septal thickening, and inducible left ventricular outflow tract obstruction. These findings support a continuum in which SHM serves as a predisposing substrate for TTC, representing a stress-provoked clinical expression within a unified myocardial stress–response framework.
The modern theory of stress, initially proposed by Hans Selye in 1956, signifies an important development in our understanding of this phenomenon. Selye’s The Stress of Life serves as a foundational book for subsequent scientific questions. In this article, we focus on a comprehensive look at stress and use a literature review to explain its theoretical foundations as well as its clinical equivalent. Our research focuses on the complex mechanisms of stress, with a particular emphasis on the consequences of cardiac remodeling and adaptation processes. Myocardial remodeling might be seen as a response to increased stress in acute or chronic situations. Stressed heart morphology (SHM) is a very interesting description representing basal septal hypertrophy (BSH), which is detectable in both acute emotional stress and chronic stress due to increased afterload in hypertension. Acute stress cardiomyopathy (ASC) and hypertension in the same individuals could be clinically linked. Also, in this report, we mention the geometric and functional similarity of the left ventricle (LV) septal base in both acute and chronic clinical situations. Therefore, cardiac imaging methods are crucial to assessing LV segmental aspects in ASC patients. We propose a new paradigm that ASC may develop in hypertensive patients with SHM. We document the segmental progression of microscopic LV remodeling using a third-generation microscopic ultrasound and note that BSH takes a longer time to occur morphologically than an acutely developed syndrome. However, the majority of ASC events have a predominant base, and the absence of segmental remodeling details, including BSH and cardiac decompensation with apical ballooning, on echocardiographic reports may mask the possible underlying hypertensive disease. In fact, beyond ASC cases, previously undiagnosed hypertension is very common, even in developed countries, and is associated with masked target organ damage.