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Contrary effects of vitamin B12 deficiency have been shown on the cardiovascular system. Aim of our study was to analyze left ventricular (LV) myocardial deformation, by using the two dimensional (2D) speckle tracking echocardiography (STE) in patients with vitamin B12 deficiency and normal LV ejection fraction. Methods: Twenty-five patients with vitamin B12 deficiency (B12 levels < 200 pg/mL; mean age: 29.6 ± 8.2 years, 15 female), and 27 healthy controls (B12 levels > 200 pg/mL; mean age:doi:10.5603/cj.a2013.0059 pmid:23799551 fatcat:ioy2lvnsvfcmdizv5mmlx6qqza