BACKGROUND: Using speckle-tracking imaging (STI), the aims of this study were to assess dyssynchrony and quantify the myocardial energy wasted by contractility in delayed segments by determining the longitudinal strain delay index (LSDi) in patients with heart failure with preserved ejection fraction (HFpEF). METHOD: Thirty-eight patients with HFpEF and 33 matched controls were recruited. All subjects underwent clinical examinations, 12-lead electrocardiography, pulmonary function tests, echocardiography, and metabolic exercise tests. LSDi was determined, the magnitude of which is a measure of the amount of wasted energy. Global and segmental systolic and diastolic dyssynchrony was assessed by STI. RESULTS: LSDi was significantly higher in patients with HFpEF than controls (-14.36 +/- 8.24% vs -10.73 +/- 5.62%, P < .05). Patients with HFpEF exhibited left ventricular (LV) systolic and diastolic dyssynchrony, with the LV anterior wall displaying the most delayed motion. CONCLUSION: Patients with HFpEF exhibited increased myocardial contractile inefficiency. They also exhibited LV systolic and diastolic dyssynchrony, with the LV anterior wall displaying the most delayed motion. Copyright 2010 American Society of Echocardiography. Published by Mosby, Inc. All rights reserved.
BACKGROUND: Using speckle-tracking imaging (STI), the aims of this study were to assess dyssynchrony and quantify the myocardial energy wasted by contractility in delayed segments by determining the longitudinal strain delay index (LSDi) in patients with heart failure with preserved ejection fraction (HFpEF). METHOD: Thirty-eight patients with HFpEF and 33 matched controls were recruited. All subjects underwent clinical examinations, 12-lead electrocardiography, pulmonary function tests, echocardiography, and metabolic exercise tests. LSDi was determined, the magnitude of which is a measure of the amount of wasted energy. Global and segmental systolic and diastolic dyssynchrony was assessed by STI. RESULTS: LSDi was significantly higher in patients with HFpEF than controls (-14.36 +/- 8.24% vs -10.73 +/- 5.62%, P < .05). Patients with HFpEF exhibited left ventricular (LV) systolic and diastolic dyssynchrony, with the LV anterior wall displaying the most delayed motion. CONCLUSION:Patients with HFpEF exhibited increased myocardial contractile inefficiency. They also exhibited LV systolic and diastolic dyssynchrony, with the LV anterior wall displaying the most delayed motion. Copyright 2010 American Society of Echocardiography. Published by Mosby, Inc. All rights reserved.
Authors: Angela B S Santos; Elisabeth Kraigher-Krainer; Natalie Bello; Brian Claggett; Michael R Zile; Burkert Pieske; Adriaan A Voors; John J V McMurray; Milton Packer; Toni Bransford; Marty Lefkowitz; Amil M Shah; Scott D Solomon Journal: Eur Heart J Date: 2013-10-27 Impact factor: 29.983
Authors: Anne-Mar Van Ommen; Elise Laura Kessler; Gideon Valstar; N Charlotte Onland-Moret; Maarten Jan Cramer; Frans Rutten; Ruben Coronel; Hester Den Ruijter Journal: Front Cardiovasc Med Date: 2021-12-17