New capabilities in assessing the left ventricular contractility by two-dimensional speckle tracking echocardiography

Олейников, В. Э.; Смирнов, Ю. Г.; Галимская, В. А.; Gundarev, E. A.; Burko, N.

doi:10.29001/2073-8552-2020-35-3-79-85

Cited by 3 publications

(2 citation statements)

References 41 publications

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“…Учитывая корреляции, GWW определяется, прежде всего, сегментами с постсистолическим сокращением, количество которых может изменяться в зависимости от степени поражения миокарда. В настоящей работе показатель GWW имел более низкое значение, чем в других исследованиях, вероятно потому, что с возрастом количество сегментов, пик сокращения которых приходится на постсистолический период, увеличивается [16,17]. Более молодой возраст включенных лиц, очевидно, определил указанное различие.…”

Section: Indicators Of Myocardial Work In Healthy Individualsunclassified

New Indicators of Myocardial Work in Healthy Individuals

Олейников

Babina

Galimskaya

et al. 2021

Racionalʹnaâ farmakoterapiâ v kardiologii

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Aim. To study in healthy individuals the gender and age characteristics of left ventricular (LV) myocardial work indicators, their correlations with global LV deformity indicators and echocardiographic parameters characterizing LV systolic and diastolic functions.Materials and methods. 70 Healthy individuals (n=70; 34 men and 36 women; aged 39.3±8.9 years) were included in the study. The echocardiographic examination determined the standard parameters and indicators of myocardial work: global work efficiency (GWE), global constructive work (GCW), global wasted work (GWW), global myocardial work index (GWI); as well as the myocardium deformation characteristics: global longitudinal deformation (GLS), global radial deformation (GRS) and global circular deformation (GCS). Spearman's correlation coefficient was used to investigate the relationship between parameters. A correlation was considered weak at r≤0.3, moderate at 0.3<r<0.7, and strong at r≥0.7.Results. The average value of global work efficiency (GWE) in men was 97% (96; 98), in women – 98% (97; 98). Global constructive work (GCW) in men was 2343.8±350.4 mm Hg%, in women – 2362.2±343.8 mm Hg%. The average value of global wasted work (GWW) in men was 46 mm Hg% (27; 75), in women – 44 mm Hg% (33; 55.5). The global myocardial work index (GWI) in men was 2069.9±356.4 mm Hg%, in women – 2055.7±339.9 mm Hg%. No significant differences were found in the comparative analysis of performance indicators. The analysis of correlations found that the myocardial work indicators didn't have significant correlations with age. Ejection fraction was moderately correlated with GWI (r=0.45) and GCW (r=0.49). Global longitudinal strain was strongly correlated with GWI (r=0.77) and GCW (r=0.77). Global radial strain correlated moderately directly with GWI (r=0.4) and GCW (r=0.4). Global circular strain was moderately correlated with GCW (r=0.35). A strong negative correlation was found between the GWE indicator and the post systolic contraction index (PSI) (r=-0.85). At the same time, PSI and GWW had a strong positive correlation (r=0.85).Conclusion. Indicators of LV myocardial work in healthy individuals do not have gender differences. The efficiency of the work of the myocardium depends primarily on the deformation of the LV, while the constructive work is determined by the volume characteristics. The wasted work indicator depends on the number of segments that peak in the post-systolic period.

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Section: Indicators Of Myocardial Work In Healthy Individualsunclassified

New Indicators of Myocardial Work in Healthy Individuals

Олейников

Babina

Galimskaya

et al. 2021

Racionalʹnaâ farmakoterapiâ v kardiologii

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“…Определенные надежды связаны с методом определения миокардиальной работы при помощи автоматизированного построения кривой давление-деформация на основе глобального продольного стрейна и постнагрузки на ЛЖ [7]. За последние несколько лет эта методика хорошо изучена у здоровых лиц, больных ХСН, артериальной гипертонией, при ресинхронизирующей терапии [8]. Однако параметрам миокардиальной работы у пациентов, перенесших острый ИМ, посвящены единичные сообщения [9].…”

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Echocardiographic parameters of the left ventricle in patients after Q-wave and non-Q-wave myocardial infarction

Oleynikov,

Salyamova,

Golubeva

et al. 2023

Russ J Cardiol

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Aim. To perform a dynamic assessment and comparative analysis of non-invasive parameters of myocardial function in patients with Q-wave and non-Q-wave myocardial infarction (MI) during 24-week follow-up after revascularization.Material and methods. A total of 95 patients with acute MI were included. On days 7-9 and after 24 weeks, speckle tracking echocardiography was performed with assessment of global longitudinal (GLS), global circumferential (GCS) and global radial strain (GRS), global work index (GWI), global constructive work (GCW), global wasted work (GWW), global work efficiency (GWE).Results. Taking into account the presence/absence of the Q wave, the subjects were divided into two groups: Q-wave MI — 66 patients (69,5%), non-Q-wave MI — 29 (30,5%) people. In the Q-wave MI group, by the 24th week, most parameters of myocardial performance were significantly lower than in the comparison group. In group 1, GWE was 93 (87; 96)% vs 96 (91; 97)% (p=0,04) in group 2; GWI — 1429±444,1 and 1653,3±385,84 mm Hg %, respectively (p=0,02). The GCW level in the Q-wave MI group was 1640±477,8 mm Hg % vs 1852,9±440,88 mm Hg % in the non-Q-wave MI group (p=0,04). Subsequently, a favorable increase in GLS (p=0,01), GWI (p=0,04), GWE (p=0,01), GCW (p=0,03) was revealed in the non-Q-wave MI group.Conclusion. The results obtained suggest that non-invasive parameters of myocardial performance can be used to assess transient ischemic dysfunction due to myocardial stunning, expressed to varying severity in patients with Q-wave MI and non-Q-wave MI.

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Diagnostic value of postsystolic shortening of the left ventricular myocardium assessed during speckle tracking stress echocardiography on the treadmill in patients with coronary artery disease

2022

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Aim To evaluate the diagnostic capacity of left ventricular (LV) postsystolic shortening (PSS) values obtained by speckle-tracking stress-echocardiography (stress-EchoCG) using a treadmill test in determining the functional significance of the degree of coronary artery (CA) stenosis.Material and methods The study included 132 patients (80 men aged 65.0±9.3 years) with suspected or previously verified diagnosis of ischemic heart disease. Stress-EchoCG with the treadmill test was performed for all patients. Strain parameters were determined by two-dimensional speckle-tracking on gray-scale images before and after the exercise. Values of LV postsystolic index (PSI) and LV mean postsystolic time (PST) were calculated. Coronary angiography was performed for all patients. Patients were divided into 3 groups based on the severity of CA stenosis according to the G. G. Gensini score.Results LV PSS values at rest did not significantly differ between the patient groups. After completion of the exercise, the mean LV PSI was significantly higher for patients with pronounced CA stenosis than in the group without CA stenosis or with moderate CA stenosis: 8.9 % [3.8; 10.7 %] vs. 3.8 % [2.2; 6.8 %] (p=0.012) and 3.4 % [2.2; 6.2 %] (p=0.012), respectively. The mean LV PSI after completion of the exercise indicated the presence of pronounced CA stenosis with a sensitivity of 75 % and a specificity of 61 % (area under the curve, AUC, 0.74±0.06; р<0.001). After completion of the exercise, the mean LV PST was significantly greater for patients with pronounced CA stenosis than in the group without CA stenosis or with moderate CA stenosis: 27.4 [18.7; 34.7] ms vs. 18.4 [10.8; 26.5] ms (p=0.036) and 20.9 [14.2; 29.5] ms (p=0.036), respectively. The mean LV PST after completion of the exercise exceeding 23.5 ms suggests pronounced CA stenosis with a sensitivity of 71 % and a specificity of 65 % (AUC 0.69±0.06; p=0.004). A complex evaluation of the LV PSI, the LV local contractility disorder (LCD) index, the LV PST, and LV LCD index allows enhancement of the test sensitivity in diagnozing pronounced CA stenosis.Conclusion Determination of LV PSS in speckle-tracking stress-EchoCG may be useful for evaluating the functional significance of the degree of CA stenosis to enhance the sensitivity of stress-EchoCG in patients with pronounced CA stenosis.

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New capabilities in assessing the left ventricular contractility by two-dimensional speckle tracking echocardiography

Cited by 3 publications

References 41 publications

New Indicators of Myocardial Work in Healthy Individuals

New Indicators of Myocardial Work in Healthy Individuals

Echocardiographic parameters of the left ventricle in patients after Q-wave and non-Q-wave myocardial infarction

Diagnostic value of postsystolic shortening of the left ventricular myocardium assessed during speckle tracking stress echocardiography on the treadmill in patients with coronary artery disease

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