Left Ventricular Hypertrophy Causes Different Changes in Longitudinal, Radial, and Circumferential Mechanics in Patients with Hypertension: A Two-Dimensional Speckle Tracking Study

Kouzu, Hidemichi; Yuda, Satoshi; Muranaka, Atsuko; Doi, Takahiro; Yamamoto, Hiroaki; Shimoshige, Shinya; Hase, Mamoru; Hashimoto, Akiyoshi; Saitoh, Shigeyuki; Tsuchihashi, Kazufumi; Miura, Tetsuji; Watanabe, Naoki; Shimamoto, Kazuaki

doi:10.1016/j.echo.2010.10.020

Cited by 104 publications

(93 citation statements)

References 32 publications

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“…Esse fato pode ser devido ao agravamento da doença e do quadro clínico desses animais, o qual poderia estar afetando a função miocárdica do VE em consequência do aumento na quantidade de deposição de colágeno, com um incremento correspondente na largura e continuidade dos componentes fibrilares da matriz extracelular, que pode influenciar o espessamento da parede ventricular (Kouzu et al, 2011).…”

Section: Discussionunclassified

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Deformação miocárdica radial por meio do speckle tracking bidimensional em suínos com hipertensão pulmonar induzida e tratados com angiotensina-(1-7)

Coelho

Oliveira

Muzzi

et al. 2016

Arq. Bras. Med. Vet. Zootec.

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Section: Discussionunclassified

“…Uma possível explicação é o fato de que, em razão do remodelamento ventricular, há uma mudança na geometria das fibras miocárdicas e no mecanismo de torção delas, atenuando o aumento compensatório do St radial em indivíduos hipertensos, como demonstrado por Kouzu et al (2011).…”

Section: Discussionunclassified

Deformação miocárdica radial por meio do speckle tracking bidimensional em suínos com hipertensão pulmonar induzida e tratados com angiotensina-(1-7)

Coelho

Oliveira

Muzzi

et al. 2016

Arq. Bras. Med. Vet. Zootec.

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“…The values of the global longitudinal deformation we took as normal were: ≥ -20%, circumferential deformation ≥ -25% and radial deformation ≥ 40%. The normal value of the twist is 9.9 ± 4.1 degrees and that of the rotation of 1.35°/cm ± 0.54 [8,9] (Figure 1). …”

Section: Speckle Trackingmentioning

confidence: 99%

Mechanical Deformation in Patients with Systemic Arterial Hypertension

Avendaño-Pérez¹,

Soto²,

Ávila-Vanzzini³

et al. 2017

J Hypertens

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IntroductionHypertension is one of the most important healthy problems, and the prevalence is of around 20% of the population (variable in different regions of the world), and the hypertension is one of the most important risk factor for cardiovascular diseases, which are the leading causes of death in developed countries [1,2]. Both elevation of systolic pressure and diastolic blood pressure shows a continuous relationship with cardiovascular risk of stroke, coronary heart disease, heart failure, renal failure and peripheral arterial disease [3].Hypertension can cause left ventricular hypertrophy and hyperplasia of the smooth muscle cells and increased production of collagen and elastin tissue. Hypertension represents an increase in cardiac afterload and the compensatory mechanism of is the development of left ventricular concentric hypertrophy. However, unlike hypertrophy which occurs in athletes, the hypertrophy in hypertensive patients occurs with an increase of collagen tissue production, a fact that in the long term leads to left ventricular diastolic dysfunction and secondarily atrial dysfunction by increasing filling pressures predisposing to atrial fibrillation, and in advanced stages systolic dysfunction with dilatation of the cavity and the appearance of heart failure and ventricular arrhythmias [4]. In addition, hypertrophy of the ventricular wall increases the oxygen myocardial demands, which together with the increase incidence of coronary lesions favour myocardial ischemia [5].Several studies have found heterogeneous systolic alterations of the left ventricle (in the longitudinal, radial, and circumferential directions) in diverse clinical settings such as diabetes, hypertension, left ventricle hypertrophy, coronary artery disease, and heart failure [4,6]. The main aim of our study was focused in the assessment of left ventricular mechanical deformation in 20 patients with systemic arterial hypertension and 21 healthy controls to establish the differences in the left ventricular mechanical deformation. Materials and MethodsBetween March 2016 and February 2017, a comparative, observational, prospective, descriptive and analytical study was carried out in 41 subjects. The patients were evaluated consecutively in the Out-patients Clinic, National Institute of Cardiology "Ignacio Chávez". Twenty patients had systemic hypertension and 21 correspond to healthy controls. All participants signed the informed consent. Inclusion criteriaPatients older than 18 years NYHA functional class I/II with a diagnosis of systemic hypertension who had not had any prior surgical or interventional procedure and also patients without valvular or myocardial lesion. AbstractBackground: Systemic arterial hypertension represents the mayor risk factor for several cardiovascular diseases. In a large number of patients it affects the left ventricle by a compensating hypertrophy and posteriorly when this mechanism is insufficient, it leads to heart failure and therefore the patient requires regular echocardiographic monitoring. ...

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“…Studies have suggested that two-dimensional speckle-tracking echocardiography (2D-STE) can be used to assess LV systolic dysfunction (6,7). However, 2D-STE has intrinsic limitations, such as long examination times, a geometric assumption of LV morphology, and mistracking if speckles move out of the scanning plane (8,9).…”

Section: Introductionmentioning

confidence: 99%

Incremental value of resting three-dimensional speckle-tracking echocardiography in detecting coronary artery disease

Sun

Wang

Zhang

et al. 2015

Experimental and Therapeutic Medicine

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Abstract. The aim of the present study was to investigate the incremental value of resting three-dimensional speckle-tracking echocardiography (3D-STE) in the detection of early-stage left ventricular dysfunction in patients with coronary artery disease (CAD). A total of 110 patients suspected of having CAD were recruited. All patients underwent 3D-STE and coronary artery angiography (CAG). They were divided to a CAD group and a normal group according to the results of CAG. Using 3D-STE software, the peak values of longitudinal strain (LS), circumferential strain (CS), radial strain (RS) and area strain (AS) and the time to peak value of these strains (T-LS, T-CS, T-RS and T-AS) were measured. A receiver operator characteristic curve (ROC) was used to analyze the sensitivity of these strains for the diagnosis of CAD. ROC analysis indicated that T-LS and composite indices combining the peak strain value and time to peak of LS, CS and AS have diagnostic value for the early detection of CAD; the area under the curve (AUC) values were 0.667, 0.692, 0.621 and 0.672 respectively (P<0.005). The composite index of longitudinal strain demonstrated the highest diagnostic value for CAD with 62% sensitivity and 76% specificity. These results indicate that 3D-STE has incremental value for the diagnosis of CAD in patients at rest.

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Left Ventricular Hypertrophy Causes Different Changes in Longitudinal, Radial, and Circumferential Mechanics in Patients with Hypertension: A Two-Dimensional Speckle Tracking Study

Cited by 104 publications

References 32 publications

Deformação miocárdica radial por meio do speckle tracking bidimensional em suínos com hipertensão pulmonar induzida e tratados com angiotensina-(1-7)

Deformação miocárdica radial por meio do speckle tracking bidimensional em suínos com hipertensão pulmonar induzida e tratados com angiotensina-(1-7)

Mechanical Deformation in Patients with Systemic Arterial Hypertension

Incremental value of resting three-dimensional speckle-tracking echocardiography in detecting coronary artery disease

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