Left ventricular structural alterations are accompanied by subclinical systolic dysfunction in type 2 diabetes mellitus patients with concomitant hyperlipidemia: An analysis based on 3D speckle tracking echocardiography

Abstract Early detection of silent myocardial ischemia (SMI) in asymptomatic middle-aged patients (pts) with type 2 diabetes mellitus (T2DM) may be important due to the generally poor prognosis and early myocardial involvement in this specific subgroup of diabetic population. Our goal was to evaluate whether subclinical left ventricular (LV) systolic dysfunction assessed by two-dimensional speckle-tracking echocardiography (2D-STE) is independently related to SMI detected by MPI (gated SPECT myocardial scintigraphy) and if it could provide incremental information over baseline characteristics to identify it. We have tested the hypothesis that the myocardial mechanics significantly differ in asymptomatic middle-aged diabetics, depending on the presence or absence of SMI. In total, 60 consecutive middle-aged (<60 years; 42 males, 70.0%) asymptomatic T2DM pts were enrolled into the study. MPI was performed in one-day protocol according to the EANM procedural guidelines, and SMI was diagnosed consensually by two experts as myocardial perfusion abnormalities without associated symptoms. The T2DM pts were subdivided into two groups according to the results of MPI, namely SMI group (n = 11) and non-SMI group (n= 49) Global longitudinal peak systolic strain (GLPSS) was measured from two- and four-chamber views cines using Automated Function Imaging (Vivid S6, GE). Subclinical LV dysfunction was defined as GLPSS of > -20%. Prevalence of SMI in T2DM pts was 18,3%. All pts in SMI group (n = 11) were of male gender, and disease duration ≥ 5 years. Pooled data from 2D-STE showed significant reduction in mean absolute GLPSS values (p<.001). Further more, pts in SMI group had more impaired GLPSS when compared with patients in non-SMI group (-16.1 ± 1.5% vs. -20.4 ± 1.8%, P < .01). At multivariate analysis, male gender, an amount of epicardial adipose tissue and erectile dysfunction in men were independently associated with SMI. The addition of the LV GLPSS values to other selected independent clinical variables significantly improved the ability to predict SMI in these patients (χ(2) = 48.62; P = .001). Asymptomatic middle-aged T2DM pts with SMI showed a more impaired LV GLPSS compared with patients without silent ischemia. The presence of subclinical LV systolic dysfunction provides significant incremental value for the identification of SMI in asymptomatic middle-aged diabetics.

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The additive effects of type 2 diabetes mellitus on left ventricular deformation and myocardial perfusion in essential hypertension: a 3.0 T cardiac magnetic resonance study

Cardiovascular Diabetology ◽

10.1186/s12933-020-01138-w ◽

2020 ◽

Vol 19 (1) ◽

Cited By ~ 1

Author(s):

Xue-Ming Li ◽

Li Jiang ◽

Ying-Kun Guo ◽

Yan Ren ◽

Pei-Lun Han ◽

...

Keyword(s):

Diabetes Mellitus ◽

Type 2 Diabetes ◽

Heart Rate ◽

Type 2 Diabetes Mellitus ◽

Cardiac Magnetic Resonance ◽

Myocardial Perfusion ◽

Systolic Dysfunction ◽

Left Ventricular ◽

Regression Analyses

Abstract Background Type 2 diabetes mellitus (T2DM) increases the risks of heart failure and mortality in patients with hypertension, however the underlying mechanism is unclear. This study aims to investigate the impact of coexisting T2DM on left ventricular (LV) deformation and myocardial perfusion in hypertensive individuals. Materials and methods Seventy hypertensive patients without T2DM [HTN(T2DM−)], forty patients with T2DM [HTN(T2DM+)] and 37 age- and sex-matched controls underwent cardiac magnetic resonance examination. Left ventricular (LV) myocardial strains, including global radial (GRPS), circumferential (GCPS) and longitudinal peak strain (GLPS), and resting myocardial perfusion indices, including upslope, time to maximum signal intensity (TTM), and max signal intensity (MaxSI), were measured and compared among groups by analysis of covariance after adjusting for age, sex, body mass index (BMI) and heart rate followed by Bonferroni’s post hoc test. Backwards stepwise multivariable linear regression analyses were performed to determine the effects of T2DM on LV strains and myocardial perfusion indices in patients with hypertension. Results Both GRPS and GLPS deteriorated significantly from controls, through HTN(T2DM−), to HTN(T2DM+) group; GCPS in HTN(T2DM+) group was lower than those in both HTN(T2DM−) and control groups. Compared with controls, HTN(T2DM−) group showed higher myocardial perfusion, and HTN(T2DM+) group exhibited lower perfusion than HTN(T2DM−) group and controls. Multiple regression analyses considering covariates of systolic blood pressure, age, sex, BMI, heart rate, smoking, indexed LV mass and eGFR demonstrated that T2DM was independently associated with LV strains (GRPS: p = 0.002, model R2= 0.383; GCPS: p < 0.001, model R2= 0.472; and GLPS: p = 0.002, model R2= 0.424, respectively) and perfusion indices (upslope: p < 0.001, model R2= 0.293; TTM: p < 0.001, model R2= 0.299; and MaxSI: p < 0.001, model R2= 0.268, respectively) in hypertension. When both T2DM and perfusion indices were included in the regression analyses, both T2DM and TTM were independently associated with GRPS (p = 0.044 and 0.017, model R2= 0.390) and GCPS (p = 0.002 and 0.001, model R2= 0.424), and T2DM but not perfusion indices was independently associated with GLPS (p = 0.002, model R2= 0.424). Conclusion In patients with hypertension, T2DM had an additive deleterious effect on subclinical LV systolic dysfunction and myocardial perfusion, and impaired myocardial perfusion by coexisting T2DM was associated with deteriorated LV systolic dysfunction.

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Improvement of continuous subcutaneous insulin infusion on patients with type 2 diabetes mellitus by 3-dimensional speckle tracking echocardiography

The International Journal of Cardiovascular Imaging ◽

10.1007/s10554-017-1245-5 ◽

2017 ◽

Vol 34 (3) ◽

pp. 379-384 ◽

Cited By ~ 1

Author(s):

Hong-xia Luo ◽

Xiao-ling Zhou ◽

Hong-ju Kou ◽

Xian-wei Ni ◽

Qing Wu ◽

...

Keyword(s):

Diabetes Mellitus ◽

Type 2 Diabetes ◽

Type 2 Diabetes Mellitus ◽

Continuous Subcutaneous Insulin Infusion ◽

Speckle Tracking ◽

Insulin Infusion ◽

Speckle Tracking Echocardiography ◽

Subcutaneous Insulin ◽

3 Dimensional

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Subtle decline in cardiac mechanics is correlated with albuminuria in asymptomatic normotensive patients with type 2 diabetes mellitus: a two-dimensional strain echocardiography study

10.21203/rs.3.rs-30939/v1 ◽

2020 ◽

Author(s):

Sameh Samir Raafat ◽

Nour Eldin M. Nazmy ◽

Islam M. Bastawy ◽

Yasser A. Abdellatif

Keyword(s):

Diabetes Mellitus ◽

Type 2 Diabetes ◽

Type 2 Diabetes Mellitus ◽

Longitudinal Strain ◽

Systolic Dysfunction ◽

Global Longitudinal Strain ◽

Left Ventricular ◽

Creatinine Ratio ◽

Albumin Creatinine Ratio

Abstract Background: Type 2 diabetes mellitus (T2DM) insidiously affects the myocardium with subsequent cardiomyopathy, it also pathologically involves the microvascular bed of the kidney reflected by albuminuria. This study aimed to investigate the relation between albuminuria and subclinical left ventricular (LV) systolic dysfunction in asymptomatic normotensive patients with T2DM assessed by two-dimensional (2D) speckle tracking echocardiography.Methods and results Sixty normotensive patients with T2DM, within 5 years of initial diagnosis, receiving conventional oral antidiabetic medications were included and subdivided into 2 subgroups, each including thirty patients according to the presence of albuminuria, together with thirty healthy control subjects all underwent full echocardiographic examination including left ventricular (LV) regional and global longitudinal strain (GLS) measurements. Laboratory tests including serum creatinine, glycated hemoglobin (HbA1C) and albumin creatinine ratio (ACR) were withdrawn for the three groups. There was a significant reduction in average peak systolic LV global longitudinal strain (GLS) in patients with T2DM when compared to control group (-16.18 ± 2.78% versus -18.13 ± 2.86%, P<0.001), however there was no significant difference in average peak systolic LV GLS between both diabetic subgroups (-15.57 ± 2.77% in subgroup with albuminuria versus -16.79 ± 2.70% in subgroup without albuminuria, p=0.077). Moreover, there was a significant correlation between ACR and reduction of GLS in patients with T2DM and albuminuria (r =0.38, P=0.003). However, this correlation was absent in patients with T2DM without albuminuria (r=0.107, P=0.573). Conclusion: Patients with type 2 diabetes mellitus (T2DM) have subclinical LV systolic dysfunction despite normal ejection fraction through reduction of average peak systolic LV GLS that is correlated with albumin creatinine ratio in patients with T2DM and albuminuria.

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