Left Ventricular Basal Rotation Research Articles

Complex Relationship of Left Ventricular Rotational Mechanics and Deformation Represented by Strain Parameters in Healthy Adults—Detailed Analysis from the Three-Dimensional Speckle-Tracking Echocardiographic MAGYAR-Healthy Study

Introduction: Left ventricular (LV) strains are measures of deformation that reflect LV function quantifying the rate of LV contraction, providing information in three directions in space: radial (RS), longitudinal (LS) and circumferential directions (CS). The LV moves around its longitudinal axis in a special movement called LV rotational mechanics. The present study aimed to assess associations between three-dimensional speckle-tracking echocardiography (3DSTE)-derived LV rotational mechanics and LV strains in healthy adult subjects. Methods: The present study consisted of 174 healthy adults (mean age: 32.8 ± 12.2 years, 79 males). Complete two-dimensional Doppler echocardiography and 3DSTE were performed in all subjects. Results: While LV-gRS and LV-gLS did not show associations with increased basal LV rotation, the lowest LV-gCS was seen in the presence of the highest LV basal rotation. An increase in basal LV rotation and consequential LV twist were not associated with apical LV rotation. While LV-gLS was not associated with the increase in apical LV rotation, LV-gRS and LV-gCS showed a trend towards increasing values. An increase in LV-gRS was associated with an increasing trend towards apical LV rotation, LV twist and LV-gCS and the preservation of basal LV rotation. LV-gLS also increased but only up to a certain value. An increase in LV-gCS was associated with a tendency towards a decrease in basal LV rotation and a tendency towards an increase in LV-gRS and LV-gLS. The highest LV-gCS was associated with the highest apical LV rotation and LV twist. The highest apical LV rotation, LV twist and LV-gCS were seen in the presence of the highest LV-gLS, while basal LV rotation and LV-gRS were not associated with increasing LV-gLS. Conclusions: Basal LV rotation has been shown to have an inverse relationship with LV-gCS, but without being related to LV-gRS and LV-gLS, while apical LV rotation is associated with LV strains in all directions, but to a different extent, suggesting a complex relationship between LV rotational mechanics and LV strains in healthy adults.

Left ventricular rotational mechanics and left ventricular volumes: is there a relationship in healthy adults?-three-dimensional speckle-tracking echocardiography-derived insights from the MAGYAR-Healthy Study.

Left ventricular (LV) rotational mechanics play a crucial role in LV pump function by strengthening and improving its efficacy. Dependence of LV rotational parameters on left atrial volumes has already been demonstrated. The evaluation of the effect of LV rotational mechanics on LV volumes was purposed in a population of healthy subjects by three-dimensional speckle-tracking echocardiography (STE). The study comprised 175 healthy subjects with a mean age of 32.8±12.2 years (79 males). All subjects underwent a complete physical examination, laboratory assessments, standard 12-lead electrocardiography and two-dimensional Doppler and three-dimensional STE, the results of these examinations were within the normal range. Increased basal LV rotation was associated with increased LV volume measured in end-systole and impaired LV ejection fraction. Increased apical LV rotation was associated with reduced LV volumes assessed in end-diastole and in end-systole and increased ejection fraction of the LV. Elevated basal LV rotation showed associations with increased LV mass. In case of increasing basal LV rotation, apical LV rotation showed a decreasing tendency and LV twist showed a tendency of increasing. Similarly, lower basal LV rotation and increased LV twist were seen with increasing apical LV rotation. Increasing LV end-diastolic volume was associated with increasing LV volume measured in end-systole and preserved ejection fraction of the LV. Increasing LV end-systolic volume was associated with increasing LV end-diastolic volume and reduction of LV ejection fraction. Increasing LV volumes were associated with increasing LV mass. While increased LV volumes were associated with reduced apical LV rotation and twist, basal LV rotation did not show significant changes. LV rotational mechanics are strongly associated with LV volumes in healthy adults suggesting its volume-dependence.

Intraoperative Augmented Rotation and Circumferential Strain Compensate for Reduction of Left Ventricular Longitudinal Function After On-Pump CABG Surgery

Left ventricular (LV) longitudinal function is reduced after on-pump coronary artery bypass grafting (CABG), while global LV function often is preserved. There are only limited data on the underlying compensatory mechanism. Therefore, the authors aimed to describe intraoperative changes of LV contractile pattern by myocardial strain analysis. A prospective observational study. At a single university hospital. A total of 30 patients scheduled for isolated on-pump CABG with an uneventful intraoperative course and preoperative preserved LV and RV function, sinus rhythm, without more-than-mild heart valve disease, or elevated pulmonary pressure. Transesophageal echocardiography was performed after induction of anesthesia (T1), after termination of cardiopulmonary bypass (T2), and after sternal closure (T3). Echocardiographic evaluation was performed under stable hemodynamics, in sinus rhythm or atrial pacing, and vasopressor support with norepinephrine ≤0.1 µg/kg/min. EchoPAC v204 software (GE Vingmed Ultrasound AS, Norway) was used for analysis of 2-dimensional (2D) and 3-dimensional (3D) LV ejection fraction (EF), LV global longitudinal strain (GLS), LV global circumferential strain (GCS), LV global radial strain (GRS), LV apical rotation (aRot), LV basal rotation (bRot), and LV twist. Strain analysis was feasible in all included patients after termination of cardiopulmonary bypass (T2). Although there were no significant differences in the values of conventional echocardiographic parameters during the intraoperative interval, GLS deteriorated significantly after CABG compared to pre-bypass assessment (T1 v T2, -13.4% ± 2.9 v -11.8% ± 2.9; p=0.007). GCS improved significantly after surgery (T1 v T2, -19.4% (IQR -17.1% to -21.2%) v -22.8% (IQR -21.1% to -24.7%); p < 0.001) as well as aRot (T1 v T2, -9.7° (IQR -7.1° to -14.1°) v -14.5° (IQR -12.1° to -17.1°); p < 0.001), bRot (T1 v T2, 5.1° (IQR 3.8°-6.7°) v 7.2° (IQR 5.6°-8.2°); p=0.02), and twist (T1 v T2, 15.8° (IQR 11.7°-19.4°) v 21.6° (IQR 19.2°-25.1°); p < 0.001), while GRS remained unchanged. There were no significant changes in the values of GLS, GCS, GRS, aRot, bRot, or twist, as well as in the values of 2D and 3D LV EF before and after sternal closure (T2 v T3). Beyond evaluation of longitudinal LV strain, measurements of circumferential and radial strain, as well as LV rotation and twist mechanics, were feasible in the intraoperative course of this study. Reduction of longitudinal function after on-pump CABG was compensated intraoperatively by improvement of GCS and rotation in the authors' group of patients. Perioperative assessment of GCS, GRS, as well as rotation and twist, might provide deeper insight into perioperative changes of cardiac mechanics.

Left ventricular deformation: similarities and dissimilarities in elite sport activity- and acromegaly-related abnormalities.

Acromegaly is a chronic endocrine disorder, which produces a significant amount of human growth hormone and consequently insulin-like growth factor in adulthood due to a tumor in the pituitary gland. If left untreated, it can have a significant effect on the cardiovascular system. It is also known that elite sport activity is also associated with physiologic cardiac transformation, the so-called athletes' heart, in which volumetric and functional adaptation of the heart cavities can be observed. In accordance with the above facts, the question may rightly arise as to what differences can be observed in left ventricular morphology and function in acromegaly, and what similarities and dissimilarities do the obtained results show compared to the values of healthy non-athlete adults compared to the values of the left ventricle of young elite athletes. The present study comprised 21 elite athletes playing high dynamic sports (mean age: 31.2 ± 6.4 years, 13 males) and 18 acromegaly patients (mean age: 47.9 ± 8.9 years, 9 males). Their results were compared to those of 22 negative controls (mean age: 47.7 ± 10.6 years, 13 males). Left ventricle is dilated, but its function is preserved in both elite athletes and patients with acromegaly. While increased longitudinal and circumferential left ventricular strains could be seen in elite athletes primarily due to the more pronounced contractility of left ventricular apical segments, increased radial left ventricular strain was detected in acromegaly due to increased function of the left ventricular basal region. Left ventricular rotational mechanics show different patterns as well: while basal left ventricular rotation is decreased in elite athletes, apical left ventricular rotation showed a reduction leading to the significant deterioration of left ventricular twist in acromegaly. Both elite athletes playing high dynamic sports and acromegaly patients have dilated left ventricle, more pronounced regional left ventricular contractility and left ventricular rotational abnormalities with differences in nature and extent of these alterations as compared to those of non-sporting healthy subjects. Orv Hetil. 2023; 164(8): 308-316.

Left ventricular rotational abnormalities in hemophilia-insights from the three-dimensional speckle-tracking echocardiographic MAGYAR-Path Study.

Hemophilia is an X-linked inherited disorder primarily affecting males, its major types are type A (deficiency in factor VIII) and B (deficiency in factor IX), and is considered to be the most common severe congenital coagulation factor deficiency. The present study was designed to test whether any differences in left ventricular (LV) rotational mechanics could be demonstrated between male patients with hemophilia and healthy controls using three-dimensional speckle-tracking echocardiography (3DSTE)-derived virtual LV models. The present study consisted of 17 patients with hemophilia, however, 3 patients were excluded due to insufficient image quality. In the remaining patient population, 12 patients had hemophilia A and 2 patients had hemophilia B (mean age: 42.2±18.9 years, all males). The control group comprised 16 age-matched healthy subjects (46.0±5.9 years, all males). None of the routine two-dimensional echocardiographic data differ between patients with hemophilia and controls. None of the patients and controls showed ≥ grade 1 valvular regurgitations and had valvular stenoses. In one subject, the near absence of LV twist called as LV "rigid body rotation" could be detected, data of which were managed separately. While 3DSTE-derived apical LV rotation was 3.65 degrees, basal LV rotation proved to be 3.57 degrees leading to 0.08-degree LV apico-basal gradient suggesting counterclockwise LV "rigid body rotation". In the remaining patients, both LV apical rotation (7.25±6.20 vs. 10.39±4.16 degrees, P<0.02) and LV twist (10.24±5.60 vs. 14.38±3.93 degrees, P<0.003) showed significant impairment in patients with hemophilia. LV rotational abnormalities are present in hemophilia with reduced LV apical rotation and twist.

Left ventricular rotational abnormalities in adult patients with corrected tetralogy of Fallot following different surgical procedures (Results from the CSONGRAD Registry and MAGYAR-Path Study)

Tetralogy of Fallot (TOF) is the most common cyanotic congenital heart disease (CHD). Abnormal aortic dimensions and elasticity parameters have been long described for corrected TOF (cTOF) together with left ventricular (LV) rotational abnormalities, but results are conflicting. The present study focuses on investigating LV rotational mechanics in cTOF, and possible correlation of these parameters with aortic elasticity. It was also aimed to be examined whether different surgical strategies have any effect on these results. The study involved 26 adult cTOF patients, from which 14 had palliative surgery first and a late total correction (pcTOF), while early total correction was the treatment of choice in 12 patients (etrTOF). Their results were compared to those of 37 age- and gender-matched healthy adults. Routine transthoracic two-dimensional Doppler echocardiography extended with assessment of aortic elastic properties and three-dimensional speckle-tracking echocardiography (3DSTE) was performed in all cTOF patients and controls. Sixteen out of 26 cTOF patients showed normally directed LV rotational mechanics, while apical or basal LV rotations were in the same clockwise or counterclockwise directions in 7 and 3 cTOF cases, respectively (LV 'rigid body rotation', RBR). Significantly reduced LV apical rotation and twist could be demonstrated in all cTOF patients with preserved LV basal rotation regardless of previous procedure. pcTOF patients showed significantly reduced LV apical rotation as compared to that of etrTOF cases. Significant correlations could be demonstrated between LV apical rotation and aortic stiffness index (r=-0.55, P=0.03) and aortic distensibility (r=0.52, P=0.04). Significant LV rotational abnormalities could be demonstrated in cTOF with the high prevalence of LV-RBR. pcTOF patients showed significantly reduced LV apical rotation as compared to that of etrTOF cases. Unexpected abnormal physiologic response of LV rotational mechanics to increased aortic stiffness can be detected in cTOF patients without LV-RBR.

Correlations between left ventricular rotational mechanics and parasympathetic autonomic function-results from the three-dimensional speckle-tracking echocardiographic MAGYAR-Healthy Study.

Left ventricular (LV) twist is calculated from the net difference of counterclockwise apical and clockwise basal rotation during systole. The current study was designed to evaluate correlations between autonomic function and LV rotational mechanics in healthy subjects. The present study comprised 18 healthy subjects (mean age: 36±12 years, 12 men). Three-dimensional speckle tracking echocardiography (3DSTE) could be used for non-invasive evaluation of LV rotation and twist. Autonomic function was assessed by means of 5 standard cardiovascular reflex tests. During 3DSTE, basal LV rotation proved to be -3.24±2.02 degree, while apical LV rotation was 9.08±3.04 degree, therefore LV twist was 11.70±6.80 degree. Valsalva test showed significant correlations with LV basal (r=0.529, P=0.019) and apical rotations (r=-0.534, P=0.022), and LV twist (r=-0.467, P=0.044). Heart rate response to deep breathing significantly correlated with LV twist, as well (r=-0.452, P=0.052). The other tests had no any relationship with rotational characteristics. Correlations exist between parasympathetic autonomic function and 3DSTE-derived LV rotation and twist in healthy subjects.

Impact of pulmonary valve replacement on left ventricular rotational mechanics in repaired tetralogy of Fallot

BackgroundIn repaired tetralogy of Fallot (rTOF), abnormal left ventricular (LV) rotational mechanics are associated with adverse clinical outcomes. We performed a comprehensive analysis of LV rotational mechanics in rTOF patients using cardiac magnetic resonance (CMR) prior to and following surgical pulmonary valve replacement (PVR).MethodsIn this single center retrospective study, we identified rTOF patients who (1) had both a CMR ≤ 1 year before PVR and ≤ 5 years after PVR, (2) had no other intervening procedure between CMRs, (3) had a body surface area > 1.0 m2 at CMR, and (4) had images suitable for feature tracking analysis. These subjects were matched to healthy age- and sex-matched control subjects. CMR feature tracking analysis was performed on a ventricular short-axis stack of balanced steady-state free precession images. Measurements included LV basal and apical rotation, twist, torsion, peak systolic rates of rotation and torsion, and timing of events. Associations with LV torsion were assessed.ResultsA total of 60 rTOF patients (23.6 ± 7.9 years, 52% male) and 30 healthy control subjects (20.8 ± 3.1 years, 50% male) were included. Compared with healthy controls, rTOF patients had lower apical and basal rotation, twist, torsion, and systolic rotation rates, and these parameters peaked earlier in systole. The only parameters that were correlated with LV torsion were right ventricular (RV) end-systolic volume (r = − 0.28, p = 0.029) and RV ejection fraction (r = 0.26, p = 0.044). At a median of 1.0 year (IQR 0.5–1.7) following PVR, there was no significant change in LV rotational parameters versus pre-PVR despite reductions in RV volumes, RV mass, pulmonary regurgitation, and RV outflow tract obstruction.ConclusionIn this comprehensive study of CMR-derived LV rotational mechanics in rTOF patients, rotation, twist, and torsion were diminished compared to controls and did not improve at a median of 1 year after PVR despite favorable RV remodeling.

Changes in strain parameters at different deterioration levels of left ventricular function: A cardiac magnetic resonance feature-tracking study of patients with left ventricular noncompaction

BackgroundThere is a lack of cardiac MRI information on left ventricular (LV) strain and rotational parameters of left ventricular noncompaction (LVNC) patients with reduced ejection fraction (EF). Thus, we sought to use feature tracking (FT) to describe these changes at different levels of EF deterioration. MethodsWe included 31 adult LVNC patients with reduced LV EF (Group B, EF < 50%) without any comorbidities or concomitant cardiac diseases, 31 age- and sex-matched LVNC patients with good EF (Group A, EF > 50%) and 31 healthy controls. Group B was divided according to LV EF into two subgroups (Group B-1: EF 35–50%, Group B-2: EF < 35%). Their global longitudinal, circumferential (GCS), and radial (GRS) strains; LV segmental strains; LV apical and basal rotation values; and patterns and degree of LV dyssynchrony were measured. ResultsAll of the global and mean segmental strain parameters were significantly worse in Groups B, B-1 and B-2 than in Group A and in the controls. The LV mechanical dispersion increased as LV EF decreased. The degree of apical rotation was the highest in the control group, almost the same in Group A and the lowest and in the reverse direction in Group B-2. A rotational pattern, clockwise-directed rigid body rotation (RBR), was found in 39% of the Group B patients, and a counterclockwise-directed RBR was found in 26% of the Group A patients. ConclusionsThe strain values and rotational parameters changed as the EF decreased. These changes affected the global LV, and we did not identify an LVNC-specific strain pattern.

Left ventricular rotational mechanics in elite athletes with high dynamic component of their training - a three-dimensional speckle-tracking echocardiographic study

Abstract Funding Acknowledgements Type of funding sources: None. Introduction. In normal circumstances left ventricular (LV) apex and base rotate different directions during cardiac cycle, while LV apex rotates counterclocwise, LV base has a clockwise movement at the same time. This sort of towel-wringing-like movement is called LV twist. Three-dimensional speckle-tracking echocardiography (3DSTE) is a new, promising, easy-to-perform and reproducible modality for the evaluation of LV apical and basal rotations. Although cardiac adaptation is a known feature seen in highly trained athletes, there are conflicting results according to sport activity-related changes in LV rotational mechanics. The present study was designed to test whether differences in LV rotational mechanics could be detected in elite athletes with high dynamic, but different grade of static components of their training by 3DSTE. Methods. The subjects group comprised 80 elite sportmen, which group of athletes was further divided according to the task force classification of the American College of Cardiology considering dynamic and static components of their training. The following groups were created regarding to their physical activity: Group C1 (high dynamic/low static)(n = 13, mean age: 24.0 ± 5.1 years, Group C2 (high dynamic/moderate static)(n = 23, mean age: 24.6 ± 7.7 years) and Group C3 (high dynamic/high static)(n = 34, mean age: 22.8 ± 6.0 years). Their results were compared to 67 age- and gender-matched non-athletic healthy controls (mean age: 24.0 ± 5.1 years, 33 men). 3DSTE was used for the evaluation of LV rotational abnormalities. Results. Increased LV end-diastolic and end-systolic volumes could be detected in Groups C2 and C3 subjects as compared to controls. No changes in LV volumes and rotational mechanics could be detected in Group C1 cases. Reduced LV basal rotation was seen in Group C2 and C3 subjects compared to that of controls (-3.17 ± 2.81 degree and -2.88 ± 1.88 degree vs. -4.31 ± 1.82 degree, p &amp;lt; 0.05 and p &amp;lt; 0.05, respectively). It was accompanied with LV twist reduction in Groups C2 and C3 subjects compared to that of controls (11.3 ± 4.3 degree and 11.5 ± 4.1 degree vs. 14.0 ± 3.4 degree, p &amp;lt; 0.05 and p &amp;lt; 0.05, respectively). None of elite athletes showed absence of LV twist called as LV ‘rigid body rotation’ (LV-RBR). Conclusions. Significant LV basal rotation and twist reduction could be detected in elite athletes with high dynamic and moderate/high static components of their training.

Diabetes mellitus deteriorates left ventricular deformation in acromegaly-analysis from the three-dimensional speckle-tracking echocardiographic MAGYAR-Path study.

Acromegaly and diabetes mellitus (DM) separately are associated with cardiovascular alterations and modified left ventricular (LV) deformation, which can be quantitatively assessed by three-dimensional speckle-tracking echocardiography (3DSTE). The present study aimed to assess the relationship between LV deformation and twist in the presence of DM in acromegaly. Thirty-seven acromegaly patients were involved in the study, but due to insufficient image quality 13 have to be excluded from analysis. Therefore, the present study comprised 24 acromegaly patients, from which 5 had DM. Their data was compared to 35 age- and gender matched healthy controls. Complete two-dimensional Doppler echocardiography extended with 3DSTE were performed in all patients and controls. Only non-diabetic acromegaly cases had increased global and mean segmental LV radial strain, diabetic acromegaly patients had similar LV radial strain as compared to that of healthy subjects. Other LV strain parameters did not show any difference between diabetic and non-diabetic acromegaly patients. While LV basal rotation was similar among the groups, LV apical rotation was reduced in both diabetic and non-diabetic patients as compared to healthy subjects. However, diabetic acromegaly patients had tendentiously higher values. The ratio of absence of LV twist called as LV rigid body rotation was similar between the groups examined. Diabetes mellitus deteriorates left ventricular deformation in acromegaly.

Evaluation of myocardial function in pregnant women with speckle-tracking echocardiography

Objectives: The speckle-tracking technique calculates the regional rate, the strain and the strain rate from two-dimensional gray-scale visualizations. The aim of this study was to evaluate with speckle-tracking echocardiography the effects of the first, second and third trimesters of pregnancy on cardiac functions. Methods: One hundred five voluntary pregnant and 35 healthy women of reproductive age were included in the study. For echocardiographic evaluations, the 111 highest-quality visualizations were chosen: 24 cases in the first trimester, 31 cases in the second trimester, 32 cases in the third trimester and 24 healthy women as a control group. Global longitudinal, radial, and circumferential strain, and left ventricular (LV) rotation and twist were evaluated by two-dimensional speckle tracking echocardiography. Results: During pregnancy, the diameter, and volume of the left atrium, LV stroke volume, and the heart rate significantly increased beginning in the first trimester (p &amp;lt; 0.0125). The parameters of pulse-Doppler E velocity and tissue Doppler Em velocity significantly increased in the first trimester (p &amp;lt; 0.0125), whereas in the second and third trimester they decreased to control levels. Global longitudinal strain was significantly decreased in the third trimester of the pregnancy (p &amp;lt; 0.0125). Basal and apical LV rotation and twist were significantly increased in the third trimester of pregnancy (p &amp;lt; 0.0125). LV apical and basal reverse rotation rate were significantly increased in the first trimester of pregnancy (p &amp;lt; 0.0125). Conclusions: In the third trimester global longitudinal strain decreased whereas LV rotation and twist increased. Speckle-tracking echocardiography may be used to evaluate the effects of pregnancy and that provide further data on cardiac functions.

Left ventricular rotational abnormalities in adult patients with corrected tetralogy of Fallot following different surgical procedures – a three-dimensional speckle-tracking echocardiographic study

Abstract Introduction Tetralogy of Fallot (TOF) is the most common cyanotic congenital heart disease. Abnormal aortic dimensions and elasticity parameters have been long described for corrected TOF (cTOF) together with left ventricular (LV) rotational abnormalities. The present study focuses on investigating LV rotational mechanics in cTOF, and possible correlation of these parameters with aortic elastic properties. It was also aimed to be examined whether different surgical strategies has any effect on the results. Methods The study involved 26 adult cTOF patients, from which 14 had palliative surgery first [Blaloc-Taussig (n=10), Waterstone-Cooley (n=2) shunts, or Brock procedure (n=2)] (mean age at the repair: 7.3±10.2 years) and a late total correction (mean age at the repair: 10.0±13.3 years) (pcTOF), while the early total correction was the treatment of choice in 12 patients (mean age at the repair: 4.2±3.2 years) (etrTOF). Their results were compared to that of 37 age- and gender-matched healthy adults. Routine transthoracic two-dimensional Doppler echocardiography extended with assessment of aortic elastic properties and three-dimensional speckle-tracking echocardiography (3DSTE) was performed in all cTOF patients and controls. Results Sixteen out of 26 cTOF patients showed normally directed LV rotational mechanics, while apical and basal LV rotations were in the same clockwise and counterclockwise directions in 7 and 3 cTOF cases, respectively (38%). This sort of LV movement is called as LV rigid body rotation (RBR). The ratio of LV-RBR between etrTOF and pcTOF patients did not differ significantly (33% vs. 43%, p=0.70). Significantly reduced LV apical rotation (5.2±3.7 degree vs. 10.2±4.5 degree, p&amp;lt;0.05) and twist (9.0±3.3 degree vs. 14.6±4.9 degree, p&amp;lt;0.05) could be demonstrated in cTOF patients with normally directed LV rotational mechanics with preserved LV basal rotation regardless of previous procedure. pcTOF patients showed significantly reduced LV apical rotation as compared to that of etrTOF cases (3.2±3.7 degree vs. 7.1±2.5 degree, p&amp;lt;0.05). From the 7 cTOF patients with clockwise LV-RBR, apical and basal LV rotation proved to be −6.8±5.4 degree and −4.9±2.4 degree, respectively with LV apico-basal gradient of 4.3±3.6 degree. The mean LV apical and basal LV rotation of 3 cTOF patients with counterclockwise LV-RBR prove to be −2.1±3.4 degree and 0.2±0.9 degree, respectively with LV apico-basal gradient of 2.5±2.4 degree. Significant correlations could be demonstrated between LV apical rotation and aortic stiffness index (r=−0.55, p=0.03) and aortic distensibility (r=0.52, p=0.04). Conclusions Significant LV rotational abnormalities could be demonstrated in cTOF with the high prevalence of LV-RBR. cTOF patients with early total reconstruction proved to have beneficial results. Abnormal physiologic response of LV rotational mechanics to increased aortic stiffness can be detected in cTOF patients without LV-RBR. Funding Acknowledgement Type of funding source: None

Left ventricular rotational deformation changes by speckle tracking imaging before and 24hours after transcatheter closure of large secundum atrial septal defects in children.

Large atrial septal defects (ASDs) in children cause increased volume overload of the right side of the heart which in turn lead to impairment of left ventricular (LV) performance. The aim of this study was to evaluate immediate LV rotational deformation changes in children with large ASDs post-device closure and removal of right ventricle (RV) volume overload. Twenty children who underwent transcatheter closure (TCC) of large secundum ASDs were included in the study. LV rotational deformation was assessed pre- and 24hours post-device closure using speckle tracking imaging (STI). 55% were females with mean age 6.1±3.5years. LV peak basal clockwise rotation improved significantly (-6.9±2.6° before vs -10.3±4.1° after TCC, P=.005), and time to peak clockwise rotation (345.1±124.7 milliseconds (ms) before vs 282.2±82.9ms after closure, P=.02). There was no significant difference in apical rotational parameters including peak counterclockwise rotation (P>.05 for both). LV twist (11.3±3.8° before vs 17.5±7.1° after closure, P=.001) and torsion (2.1±0.7°/cm before vs 3.1±1.2°/cm after closure, P=.01) were significantly improved, mainly as the result of improvement of LV basal rotation. LV revealed a significant increase in LV end-diastolic volumes (P=.02) 24hour after TCC with no significant change (P>.05) in end-systolic volumes after closure. Increased peak LV twisting and torsion were attributed to the improved peak systolic clockwise basal rotation after TCC of large ASDs in children.

Speckle tracking echocardiography in hypokinetic non-dilated cardiomyopathy: comparison with dilated cardiomyopathy.

AimsHypokinetic non‐dilated cardiomyopathy (HNDC), which is determined by impaired left ventricular (LV) systolic function despite normal LV size, has been categorized as a subgroup of dilated cardiomyopathy (DCM) spectrum. Lack of data regarding advanced echocardiographic data in this population motivated us to design the present study in order to assess LV myocardial deformation properties of HNDC patients against the ones with dilated left ventricle.Methods and resultsThirty‐one HNDC patients and 23 DCM patients were enrolled in the study consecutively. Myocardial deformation parameters including global longitudinal strain, global circumferential strain, LV basal and apical rotation, LV twist, and LV mechanical dispersion were obtained with the use of two‐dimensional speckle tracking‐based methods in all patients. Left cardiac chamber volume was also measured using three‐dimensional HeartModel application. Patients with enlarged left ventricle tend to have lower LV ejection fraction. Comparing with HNDC group, DCM patients showed worse global circumferential strain (coefficient ± standard error 3.59 ± 0.94, P < 0.001) and LV mechanical dispersion (coefficient ± standard error 16.46 ± 7.09, P = 0.02) after regression analysis, while neither the global longitudinal strain nor the LV twist was not significantly different between two study population.ConclusionsLeft ventricular enlargement has a substantial effect on the circumferential strain and mechanical dispersion more than other deformation parameters that may play a role in the assumed poor prognosis of heart failure patients with dilated left ventricle.

P333 Left ventricular rotational abnormalities in hypereosinophilic syndrome as assessed by three-dimensional speckle-tracking echocardiography

Abstract Introduction Hypereosinophilic syndrome (HES) is a very heterogeneous group of disorders with varied etiologies characterized by peripheral eosinophilia and eosinophilic tissue/end-organ damage. In the present study, the ability of a novel non-invasive clinical tool, three-dimensional speckle-tracking echocardiography (3DSTE) was investigated to reveal any change in left ventricular (LV) rotational mechanics in clinically asymptomatic HES patients without manifest organ damage as determined by conventional diagnostic methods. Methods The present study comprised 13 patients established diagnosis of HES. However, one patient with idiopathic HES has been excluded due to insufficient image quality. The remaining patient population contained 11 cases with idiopathic HES and one patient with acute T-lymphoma associated HES (mean age: 59.7 ± 13.7 years, 8 males). The control group consisted of 36 healthy volunteers (mean age: 52.9 ± 8.3 years, 23 males). All HES patients and controls underwent complete two-dimensional Doppler echocardiography and 3DSTE. Results Both LV apical rotation (4.86 ± 1.92 degree vs. 10.07 ± 3.92 degree, p &amp;lt; 0.0001) and LV twist (8.52 ± 2.79 degree vs. 14.41 ± 4.26 degree, p &amp;lt; 0.0001) showed significant deteriotations in most of HES patients. In 2 subjects absence of LV twist called as LV „rigid body rotation’ (RBR) was detected. One patient had 1.77 degree counterclockwise (abnormally directed) LV basal rotation and 14.29 degree counterclockwise (normally directed) LV apical rotation resulting in 12.59 degree LV apico-basal gradient. The other patient had normally directed -2.09 degree LV basal rotation and almost zero (-0.27 degree) LV apical rotation resulting in 1.82 degree LV apico-basal gradient. Conclusions Reduced LV apical rotation and twist could be demonstrated in HES. LV-RBR could be detected in some HES patients.

Left ventricular rotational mechanics in hypereosinophilic syndrome-Analysis from the three-dimensional speckle-tracking echocardiographic MAGYAR-Path Study.

Hypereosinophilic syndrome (HES) is a very heterogeneous group of disorders with varied etiologies characterized by peripheral eosinophilia and eosinophilic tissue/end-organ damage. Three-dimensional speckle-tracking echocardiography (3DSTE) was used for assessment of left ventricular (LV) rotational mechanics in HES patients. The study comprised 13 HES patients, from which one patient was excluded due to insufficient image quality. The remaining patient population consisted of 12 HES cases (mean age: 59.7±13.7years, eight males). The control group consisted of 36 healthy volunteers (mean age: 52.9±8.3years, 23 males). 3DSTE was used for the evaluation of LV rotational abnormalities. Both LV apical rotation (4.86±1.92 degree vs 10.07±3.92 degree, P<.0001) and LV twist (8.52±2.79 degree vs 14.41±4.26 degree, P<.0001) showed significant deteriorations in most of HES patients. Time-to-peak LV apical rotation (380±115ms vs 344±69ms, P=.56), LV basal rotation (335±148ms vs 337±111ms, P=.89), and LV twist (348±91ms vs 320±60ms, P=.64) were not significantly different between HES patients and controls. No correlations could be detected between absolute eosinophil count and eosinophil ratio and apical LV rotation (r=0.12, P=.51 and r=0.23, P=.45, respectively) and LV twist (r=0.24, P=.39 and r=0.31, P=.34, respectively). In two subjects, the absence of LV twist called LV "rigid body rotation" (RBR) was detected. Reduced LV apical rotation and twist could be demonstrated in HES. LV-RBR could be detected in some HES patients.

Feasibility and Reproducibility of Fetal Left Ventricular Twist Using Two-Dimensional Speckle-Tracking Analysis in a Japanese Population.

In fetal echocardiography, conventional parameters for assessing cardiac function are limited because of limited echocardiographic windows or the fetus' position. We aimed to evaluate the feasibility and reproducibility of fetal left ventricular (LV) twist by two-dimensional, speckle-tracking echocardiography (2DSTE) in a Japanese population.We included 55 normal fetuses at gestational ages between 21 and 36 weeks. Subjects with adverse maternal health issues were excluded. LV twist was calculated as the net difference between LV basal and apical rotation at end-systole estimated with 2DSTE.We were able to analyze the 2DSTE images in 44 cases (80%). The mean (±SE) apical rotation, basal rotation, and LV twist were 7.88 ± 0.77, -3.68 ± 0.50, and 11.1 ± 0.75 degrees, respectively. We could not analyze 11 cases (20%) because of poor image quality due to fetal position in five cases (45.5%), failure to track the endocardium because of blurred images in five cases (45.5%), and failure to obtain images of the heart due to the presence of the placenta in front of the fetus in one case (9.1%). There were no significant differences in the demographic data between pregnant women in whom LV twist analysis was feasible and not feasible. The intra- and interobserver intraclass correlation coefficients were 0.67 and 0.64, respectively.LV twist analysis by 2DSTE in the fetus was feasible in a substantial population and may provide new insight into cardiac function during the prenatal period. On the other hand, its reproducibility was moderate and needs to be improved.

Left Ventricular Systolic Function Assessed by Speckle Tracking Echocardiography in Athletes with and without Left Ventricle Hypertrophy.

The aim of this study was to evaluate selected parameters of strain and rotation of the left ventricle (the basal rotation (BR) index, the basal circumferential strain (BCS) index, and the global longitudinal strain (GLS) of the left ventricle) in male athletes with physiological cardiac hypertrophy (LVH group), and athletes (non-LVH group) and non-athletes without hypertrophy (control group, CG). They were evaluated using transthoracic echocardiography and speckle tracking echocardiography before and after an incremental exercise test. The LVH group demonstrated lower BR at rest than the non-LVH group (p < 0.05) and the CG (p < 0.05). Physical effort had no effect on BR, nor was this effect different between groups (p > 0.05). There was a combined influence of LVH and physical effort on BR (F = 5.70; p < 0.05) and BCS (F = 4.97; p < 0.05), but no significant differences in BCS and GLS at rest between the groups. A higher BCS and lower GLS after exercise in the LVH group were demonstrated in comparison with the CG (p < 0.05). Left ventricular basal rotation as well as longitudinal and circumferential strains showed less of a difference between rest and after physical effort in subjects with significant myocardial hypertrophy. In conclusion, the obtained results may suggest that echocardiographic assessment of basal rotation and circumferential strain of the left ventricular can be important in predicting cardiac disorders caused by physical effort in individuals with physiological and pathological heart hypertrophy.

Normal values of left ventricular rotational parameters in healthy adults-Insights from the three-dimensional speckle tracking echocardiographic MAGYAR-Healthy Study.

Left ventricular (LV) rotation and twist are essential parts of LV function. Three-dimensional speckle tracking echocardiography (3DSTE) is a relatively new method and is useful for the quantification of LV wall deformation and rotational parameters. The aim of the present study was to examine LV rotation and twist differences between different age-groups and genders in a healthy population. The present study is comprised of 297 healthy adults; 120 adults have been excluded due to inferior image quality. The population was further divided into 4 subgroups based on age decades. Only the LV twist of all patients (13.5±3.7 degree vs 15.6±4.9 degree, P=0.02) and the LV twist of females (13.0±3.6 degree vs 15.5±5.6 degree, P=0.03) differed significantly between the age-group of 18-29years and 50+years. LV basal and apical rotation were not significantly different between the age-groups; however, they tendentiously increased with aging. No significant differences could be demonstrated regarding LV rotational and twist parameters between genders in any group. A phenomenon called LV rigid body rotation (LV-RBR)-where the base and apex of the LV rotate in the same direction-was present in 10 cases. Three-dimensional speckle tracking echocardiography seems to be a reasonably viable tool for the quantification of LV rotation and twist. Both LV basal and apical rotation and LV twist increase with aging, regardless of gender. LV-RBR is also present in the normal population.