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García-Álvarez, Ana, MD; Sitges, Marta, MD, PhD; Regueiro, Ander, MD; Poyatos, Silvia; Jesus Pinazo, Maria, MD; Posada, Elisabeth; Bijnens, Bart; Heras, Magda, MD, PhD; Gascon, Joaquim, MD, PhD; Sanz, Ginés, MD, PhD
Journal of cardiac failure, 12/2011, Letnik: 17, Številka: 12Journal Article
Abstract Background Assessment of myocardial deformation in Chagas disease may help us to better understand the disease pathophysiology and to detect early myocardial involvement. We aimed to characterize myocardial deformation in patients in different forms of Chagas disease and, specifically, assess differences between patients in the indeterminate form and controls. Methods and Results Speckle tracking echocardiography was performed in 98 subjects (22 with Chagas cardiomyopathy, 32 in the indeterminate form, and 44 control subjects) to quantify global and segmental left ventricular (LV) radial strain (RS), circumferential strain (CS), and longitudinal strain (LS). In a subset of patients from the indeterminate and control groups (n = 25), LV peak systolic twist and untwisting velocities were additionally assessed. Global RS, CS, and LS showed a significant decreasing trend across groups. Patients in the indeterminate form had significantly lower global RS and RS in the midinferior segment (median 39.8% vs 49.3% P = .046 and 44.0% vs 56.0% P = .038, respectively) and lower twist and untwisting velocity ( P < .05 for both) compared with control subjects. Conclusion Evaluation of myocardial deformation, particularly of RS, appears to be a sensitive technique for detection of myocardial involvement in patients in the indeterminate form and provides insights into the still unrevealed pathophysiology of Chagas heart involvement.
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Leto | Faktor vpliva | Izdaja | Kategorija | Razvrstitev | ||||
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JCR | SNIP | JCR | SNIP | JCR | SNIP | JCR | SNIP |
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in: SICRIS
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