Vector flow mapping analysis of left ventricular energetic performance in healthy adult volunteers

BMC Cardiovascular Disorders

Research Article

Keiichi Itatani¹  Yasufumi Nakajima²  Sachiko Maeda³  Teiji Sawa³  Yoshifumi Naito³  Mao Kinoshita³  Koichi Akiyama³  Saeko Hamaoka³  Hideya Kato³  Atsushi Kainuma³  Maki Ishii³  Naotoshi Nakamura⁴  Tasuku Matsuyama⁵ 

[1] Cardiovascular Surgery, Kyoto Prefectural University of Medicine, Kamigyo, Kyoto, Japan;Department of Anesthesiology, Kansai Medical University, Hirakata, Japan;Department of Anesthesiology, Kyoto Prefectural University of Medicine, 465 Kajii-cho, 602-8566, Kamigyo, Kyoto, Japan;Department of Statistical Genetics, Kyoto University, Kamigyo, Kyoto, Japan;Emergency Medicine, Kamigyo, Japan;

关键词: Vector flow mapping;    Energy loss;    Kinetic energy;    Energetic performance index;    Vortex;   

DOI  :  10.1186/s12872-016-0444-7

 received in 2016-08-24, accepted in 2016-12-15,  发布年份 2017

来源: Springer

【 摘 要 】

BackgroundVector flow mapping, a novel flow visualization echocardiographic technology, is increasing in popularity. Energy loss reference values for children have been established using vector flow mapping, but those for adults have not yet been provided. We aimed to establish reference values in healthy adults for energy loss, kinetic energy in the left ventricular outflow tract, and the energetic performance index (defined as the ratio of kinetic energy to energy loss over one cardiac cycle).MethodsTransthoracic echocardiography was performed in fifty healthy volunteers, and the stored images were analyzed to calculate energy loss, kinetic energy, and energetic performance index and obtain ranges of reference values for these.ResultsMean energy loss over one cardiac cycle ranged from 10.1 to 59.1 mW/m (mean ± SD, 27.53 ± 13.46 mW/m), with a reference range of 10.32 ~ 58.63 mW/m. Mean systolic energy loss ranged from 8.5 to 80.1 (23.52 ± 14.53) mW/m, with a reference range of 8.86 ~ 77.30 mW/m. Mean diastolic energy loss ranged from 7.9 to 86 (30.41 ± 16.93) mW/m, with a reference range of 8.31 ~ 80.36 mW/m. Mean kinetic energy in the left ventricular outflow tract over one cardiac cycle ranged from 200 to 851.6 (449.74 ± 177.51) mW/m with a reference range of 203.16 ~ 833.15 mW/m. The energetic performance index ranged from 5.3 to 37.6 (18.48 ± 7.74), with a reference range of 5.80 ~ 36.67.ConclusionsEnergy loss, kinetic energy, and energetic performance index reference values were defined using vector flow mapping. These reference values enable the assessment of various cardiac conditions in any clinical situation.

【 授权许可】

CC BY   
© The Author(s). 2017