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  • Title: Impaired myocardial radial function in asymptomatic patients with type 2 diabetes mellitus: a speckle-tracking imaging study.
    Author: Ernande L, Rietzschel ER, Bergerot C, De Buyzere ML, Schnell F, Groisne L, Ovize M, Croisille P, Moulin P, Gillebert TC, Derumeaux G.
    Journal: J Am Soc Echocardiogr; 2010 Dec; 23(12):1266-72. PubMed ID: 20932716.
    Abstract:
    BACKGROUND: Diabetic cardiomyopathy has been characterized by an early impairment of left ventricular (LV) longitudinal function as opposed to preserved LV radial function. METHODS: Conventional echocardiography and longitudinal (ε(L)) and radial (ε(R)) systolic strain assessed by speckle-tracking imaging were obtained in 114 type 2 diabetic patients and 88 age-matched controls. RESULTS: LV ejection fraction was similar in diabetic patients and controls. The presence of subclinical LV systolic dysfunction in diabetic patients was demonstrated by lower values of midwall fractional shortening (18% ± 3% vs 20% ± 3%, P = .006), ε(L) (-19% ± 3% vs -22% ± 2%, P < .001), and ε(R) (50% ± 16% vs 56% ± 12%, P = .003) compared with controls. On multivariate analysis, factors predicting strain values were diabetes (P = .001) and gender (P = .001) for ε(L) and diabetes (P = .003) for ε(R). CONCLUSION: Diabetic patients without overt heart disease display subclinical alteration of both radial and longitudinal LV systolic function even after adjustment for blood pressure, age, and body mass index.
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