Energetic performance index improvement after Glenn and Damus-Kaye-Stansel procedure using vector flow mapping analysis: a case report

Kainuma, Atsushi; Akiyama, Koichi; Naito, Yoshiro; Hayase, Kazuma; Hongu, Hisayuki; Yamagishi, Masaaki; Sawa, Teiji

doi:10.1186/s40981-020-0312-4

Cited by 3 publications

(4 citation statements)

References 18 publications

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“…Our method of EL calculation is based on the same method as previously reported (6,8,12), and is truly reproducible and not so much beat dependent.…”

Section: Defining Energy Lossmentioning

confidence: 99%

“…Normal pattern vortex and EL reference value of the left ventricle in adults and pediatric patients were confirmed by using VFM ( 5 , 6 ). VFM analysis of valvular ( 7 – 10 ) and congenital heart disease ( 11 , 12 ) can reportedly reveal and evaluate the effectiveness of the surgical treatment. As it does not require the use of contrast, this VFM technology can be easily used in routine clinical practice to assess ventricular vortices and predict patients' outcome ( 13 ).…”

Section: Introductionmentioning

confidence: 99%

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Preoperative Left Ventricular Energy Loss in the Operating Theater Reflects Subjective Symptoms in Chronic Aortic Regurgitation

et al. 2022

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BackgroundThere is currently no subjective, definitive evaluation method for therapeutic indication other than symptoms in aortic regurgitation. Energy loss, a novel parameter of cardiac workload, can be visualized and quantified using echocardiography vector flow mapping. The purpose of the present study was to evaluate whether energy loss in patients with chronic aortic regurgitation can quantify their subjective symptoms more clearly than other conventional metrics.MethodsWe studied 15 patients undergoing elective aortic valve surgery for aortic regurgitation. We divided the patients into symptomatic and asymptomatic groups using their admission records. We analyzed the mean energy loss in one cardiac cycle using transesophageal echocardiography during the preoperative period. The relationships between symptoms, energy loss, and other conventional metrics were statistically analyzed.ResultsThere were seven and eight patients in the symptomatic and asymptomatic groups, respectively. The mean energy loss of one cardiac cycle was higher in the symptomatic group (121 mW/m [96–184]) than in the asymptomatic group (87 mW/m [80–103]) (p = 0.040), whereas the diastolic diameter was higher in the asymptomatic group (65 mm [59–78]) than in the symptomatic group (57 mm [51–57]) (p = 0.040). There was no significant difference between the symptomatic and asymptomatic groups in terms of other conventional metrics.ConclusionsAn energy loss can quantify patients' subjective symptoms more clearly than other conventional metrics. The small sample size is the primary limitation of our study, further studies assessing larger cohort of patients are warranted to validate our findings.

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“…Our method of EL calculation is based on the same method as previously reported (6,8,12), and is truly reproducible and not so much beat dependent.…”

Section: Defining Energy Lossmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Preoperative Left Ventricular Energy Loss in the Operating Theater Reflects Subjective Symptoms in Chronic Aortic Regurgitation

et al. 2022

Self Cite

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“…57 In addition, EL seems to be a valid parameter to assess diastolic function in children after arterial switch operation. 58 Lastly, some authors examined flow parameters in patients with double-outlet right ventricle 59 double inlet-left ventricle 60 and tricuspid atresia 61 suggesting the suitability of VFM technique even in complex patients; however, these are anecdotical cases.…”

Section: Congenital Heart Diseasesmentioning

confidence: 99%

Vector flow mapping: A review from theory to practice

Avesani

Degrelle²,

Salvo

et al. 2021

Echocardiography

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Background:The interest in intra-cardiac blood flow analysis is rapidly growing, and it has encouraged the development of different non-invasive imaging techniques. Among these, Vector Flow Mapping (VFM), combing Color-Doppler imaging and speckle tracking data, seems to be a promising approach, feasible in adult and children population. Aim of the review:The aim of this review is to give a historical perspective on the development of VFM method and a summary of the current algorithms and parameters potentially evaluable. Then, we will present the current state-of-the-art of VFM with an overview of clinical studies and applications of this technique.

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“…Several studies attempted to elucidate the mechanism of thrombus formation in the left ventricle 7,8 . VFM analysis of valvular [9][10][11][12] and congenital heart disease [13][14][15] can reportedly reveal and evaluate the effectiveness of the surgical treatment. As it does not require the use of contrast, this VFM technology can be easily used in routine clinical practice to assess ventricular vortices and predict patients' outcome 16 .…”

Section: Introductionmentioning

confidence: 99%

Preoperative left ventricular energy loss in the operating theater reflects subjective symptoms in chronic aortic regurgitation

Kainuma

Akiyama

Naito

et al. 2020

Preprint

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Objective: There is currently no subjective, definitive evaluation method for therapeutic indication other than symptoms in aortic regurgitation. Energy loss, a novel parameter of cardiac workload, can be visualized and quantified using echocardiography vector flow mapping. The purpose of the present study was to evaluate whether energy loss in patients with chronic aortic regurgitation can quantify their subjective symptoms more clearly than other conventional metrics. Methods: We studied 15 patients undergoing elective aortic valve surgery for aortic regurgitation. We divided the patients into symptomatic and asymptomatic groups using their admission records. We analyzed the mean energy loss in one cardiac cycle using transesophageal echocardiography during the preoperative period. The relationships between symptoms, energy loss, and other conventional metrics were statistically analyzed. Results: There were seven and eight patients in the symptomatic and asymptomatic groups, respectively. The mean energy loss of one cardiac cycle was higher in the symptomatic group (121 [96 to 184]) than in the asymptomatic group (87 [80 to 103]) (p=0.040), whereas the diastolic diameter was higher in the asymptomatic group (65 [59 to 78]) than in the symptomatic group (57 [51 to 57]) (p=0.040). There was no significant difference between the symptomatic and asymptomatic groups in terms of other conventional metrics. Conclusions: An energy loss can quantify patients' subjective symptoms more clearly than other conventional metrics. The small sample size is the primary limitation of our study, further studies assessing larger cohort of patients are warranted to validate our findings.

show abstract

Energetic performance index improvement after Glenn and Damus-Kaye-Stansel procedure using vector flow mapping analysis: a case report

Cited by 3 publications

References 18 publications

Preoperative Left Ventricular Energy Loss in the Operating Theater Reflects Subjective Symptoms in Chronic Aortic Regurgitation

Preoperative Left Ventricular Energy Loss in the Operating Theater Reflects Subjective Symptoms in Chronic Aortic Regurgitation

Vector flow mapping: A review from theory to practice

Preoperative left ventricular energy loss in the operating theater reflects subjective symptoms in chronic aortic regurgitation

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