left ventricular mechanics
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2021 ◽  
Author(s):  
Justine Paysal ◽  
Etienne Merlin ◽  
Emmanuelle Rochette ◽  
Daniel Terral ◽  
Stephane Nottin

Abstract Background: Adolescent weight disorders ranging from anorexia nervosa (AN) to obesity (OB) can impact the heart by causing opposite alterations in its morphology, suggesting a direct impact of BMI on the heart. Cardiac function is relatively preserved as assessed by standard ultrasound methods. However, few studies have used speckle-tracking echocardiography (STE), which can detect subtle alterations of left ventricular (LV) function by evaluating deformations. The aim of this study was to assess the link between BMI z-score of female adolescents and myocardial function. Methods: Ninety-one female adolescents comprising 26 AN patient (age 14.6 ± 1.9 y), 28 OB patients (age 13.2 ± 1.4 y), and 37 controls (age 14.0 ± 2.0 y) underwent STE to assess LV morphology and myocardial regional deformations. Findings: The BMI z-score of our population ranged from −4.6 to 5.2. LV morphological remodeling was significantly and positively correlated with BMI z-score (R² = 0.456, p < 0.0001 for LV mass). Global longitudinal strain (LS) and regional LS recorded at the mid and apical levels were significantly correlated with BMI z-score (R² = 0.196, p = 0.0001 and R² = 0.274, p < 0.0001 respectively for apical and medial LS). Circumferential strains and twisting mechanics were not correlated with BMI z-score. Fibrinogen and SBP were the main variables explaining the alteration of longitudinal strains. Conclusion: A impact of BMI z-score on LV mechanics was observed especially on medial and apical LS. Neither circumferential nor twisting mechanics were altered by BMI z-score in female adolescents.


Author(s):  
Soohyun Chang ◽  
Parm Khakh ◽  
Mikyla Janzen ◽  
Marla Kiess ◽  
Valerie Rychel ◽  
...  

Background: The aim of our study was to characterize echocardiographic changes during pregnancy in women with known LVOT obstruction or AS compared to the healthy pregnancy controls, and to assess the relationship with pregnancy outcomes. Methods: We retrospectively studied 34 pregnant patients with congenital LVOT obstruction or AS with healthy age-matched pregnant controls. Patients with other significant valvular lesions, structural heart disease (LVEF <40%), or prior valve surgery were excluded. All LVOTO/AS patients underwent a minimum of 2 consecutive echocardiograms between 1 year pre-conception up to 1 year postpartum, with at least 2 studies during the pregnancy. Comprehensive echocardiographic evaluation was performed including speckle-tracking LV global longitudinal strain. Results: A total of 83 echocardiograms from the study group and 34 echocardiograms from the control group were evaluated. Over the range of LVOTO/AS, a significantly greater increase in the AV gradients and LV and LA volumes were observed as compared with the controls. In the sub-group of LVOTO/AS pregnant women with > moderate (n=8) vs.


Author(s):  
Victoria Delgado ◽  
Jens-Uwe Voigt

Cardiac resynchronization therapy (CRT) is an established therapy for patients with heart failure who remain symptomatic despite optimal medical treatment. Guideline recommendations for patient selection have been published by all major scientific societies including the ESC and are regularly updated. Unfortunately, the rate of patients who do not respond to CRT remains stable in the range of 30–40%, even in indication class I. In the selection of patients with heart failure who may benefit from cardiac resynchronization therapy (CRT), evaluation of left ventricular mechanics and dyssynchrony, extent, and location of myocardial scar and cardiac venous anatomy are most important. Multimodality imaging is pivotal to obtain this information and understand how CRT exerts its effects. This chapter will review the current state-of-the-art of multimodality imaging to select patients for CRT implantation.


2021 ◽  
Vol 11 (02) ◽  
pp. 113-125
Author(s):  
Francisco J. González-Ruiz ◽  
Emmanuel A. Lazcano-Díaz ◽  
Zuilma Y. Vásquez-Ortiz ◽  
Fernanda Bernal-Ceballos ◽  
Rodrigo Gopar-Nieto ◽  
...  

Цель исследования - изучение механики левого желудочка у детей, рожденных недоношенными с низкой и экстремально низкой массой тела, в период постнатального онтогенеза. Материал и методы исследования: в работу включено 88 детей в возрасте от 1 года до 5 лет, рожденных глубоконедоношенными с очень низкой и экстремально низкой массой тела. Группу сравнения составили 46 здоровых детей аналогичного возраста, рожденных доношенными. Меха ника левого желудочка изучена путем оценки вращения левого желудочка на уровне базальных сегментов, папиллярных мышц, верхушки и скручивания с помощью технологии двухмерной спекл-трекинг эхокардиографии. Результаты исследования: выделено четыре типа скручивания левого желудочка как у здоровых доношенных детей, так и у детей, рожденных глубоконедоношенными. Распределение типов скручивания левого желудочка у детей в возрасте от 1 года до 5 лет, рожденных с низкой, очень низкой и экстремально низкой массой тела, отличалось от детей, рожденных доношенными. Первый (“взрослый”) тип скручивания левого желудочка выявлен у 46,59% детей, рожденных глубоконедоношенными, и у 67,39% здоровых доношенных детей. “Детские” (второй и третий) типы по час тоте не различались между детьми обеих групп (11,36 и 15,91% против 13,04 и 15,22% соответственно). Четвертый тип (отрицательная апикальная ротация) значительно чаще обнаружен у детей, рожденных глу боконедоношенными (26,14 против 4,37%, P = 0,01). Не выявлено различий в час тоте выявленных типов скручивания левого желудочка в зависимости от пола ребенка среди детей, рожденных глубоконедоношенными. Выявлена связь скручивания левого желудочка с массой тела при рождении (r = 0,53, P = 0,003) у детей, рожденных глубоконедоношенными, в возрасте от 1 года до 3 лет. Ключевые слова: двухмерная спеклтрекинг эхокардиография, ротация левого желудочка, скручивание левого желудочка, механика левого желудочка, недоношенные дети, дети, рожденные с очень низкой массой тела, дети, рожденные с экстремально низкой массой тела, 2D speckle tracking echocardiography (imaging), left ventricular rotation, left ventricular twist, left ventricular mechanics, premature infants, children with


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