Dataset Information

Global longitudinal strain, ejection fraction, effort tolerance and normal echocardiography measurements in healthy Indians.

ABSTRACT:

Introduction

Normative comprehensive echocardiographic measurements data for healthy Indians are not available while data for American and European population is available from American Society of echocardiography and European Society of Cardiology/European Association of Cardio-Vascular Imaging and their publications. Available studies of Indian subjects are small and report only limited measurements with focus on left ventricular (LV) volumes.

Objective

We aim to provide comprehensive normative echocardiographic data for healthy Indians from a large sample size.

Methods

A retrospective cross-sectional single-center study of 707 healthy Indian adults age and sex segregated which presented detailed and comprehensive echocardiographic measurements including two-dimensional, M-mode, tissue Doppler imaging, speckle tracking echocardiography, chamber volumes, LV ejection fraction (LVEF), global longitudinal strain (GLS), segmental longitudinal strain and effort tolerance.

Results

Our findings show healthy Indians, as compared to US and European population, to have higher relative wall thickness. LV volumes, LV mass, LVEF and effort tolerance that were within American Society of Echocardiography described ranges for chamber quantification. Higher GLS values were observed in Indian population compared to European and American population. Women had higher LVEF and GLS values as compared to men and both showed a gradual decline with aging.

Conclusion

We present normal reference values for echocardiographic measurements in healthy Indian population, which could be used for future reference and comparison work.

SUBMITTER: Sullere V

PROVIDER: S-EPMC6204477 | biostudies-literature | 2018 Sep - Oct

REPOSITORIES: biostudies-literature

ACCESS DATA

Publications

Global longitudinal strain, ejection fraction, effort tolerance and normal echocardiography measurements in healthy Indians.

Sullere Vivek V Jain Deepika D Sullere Shivang S Anthony Carmeline C

Indian heart journal 20180614 5

<h4>Introduction</h4>Normative comprehensive echocardiographic measurements data for healthy Indians are not available while data for American and European population is available from American Society of echocardiography and European Society of Cardiology/European Association of Cardio-Vascular Imaging and their publications. Available studies of Indian subjects are small and report only limited measurements with focus on left ventricular (LV) volumes.<h4>Objective</h4>We aim to provide compreh ...[more]

PMID: 30392501

Similar Datasets

Project description:Evidence-based therapies for heart failure (HF) differ significantly according to left ventricular ejection fraction (LVEF). However, few data are available on the phenotype and prognosis of patients with HF with midrange LVEF of 40% to 55%, and the impact of recovered systolic function on the clinical features, functional capacity, and outcomes of this population is not known.We studied 944 patients with HF who underwent clinically indicated cardiopulmonary exercise testing. The study population was categorized according to LVEF as follows: HF with reduced LVEF (HFrEF; LVEF<40%; n=620); HF with midrange ejection fraction and no recovered ejection fraction (LVEF was consistent between 40% and 55%; n=107); HF with recovered midrange ejection fraction (LVEF, 40%-55% but previous LVEF<40%; n=170); and HF with preserved LVEF (HFpEF; LVEF>55%; n=47). HF with midrange ejection fraction and no recovered ejection fraction and HF with recovered midrange ejection fraction had similar clinical characteristics, which were intermediate between those of HFrEF and HFpEF, and comparable values of predicted peak oxygen consumption and minute-ventilation/carbon dioxide production slope, which were better than HFrEF and similar to HFpEF. After a median of 4.4 (2.9-5.7) years, there were 253 composite events (death, left ventricular assistant device implantation, or transplantation). In multivariable Cox-regression analysis, HF with recovered midrange ejection fraction had lower risk of composite events than HFrEF (hazard ratio, 0.25; 95% confidence interval, 0.13-0.47) and HF with midrange ejection fraction and no recovered ejection fraction (hazard ratio, 0.31; 95% confidence interval, 0.15-0.67), and similar prognosis when compared with HFpEF. In contrast, HF with midrange ejection fraction and no recovered ejection fraction tended to show intermediate risk of outcomes in comparison with HFpEF and HFrEF, albeit not reaching statistical significance in fully adjusted analyses.Patients with HF with midrange LVEF demonstrate a distinct clinical profile from HFpEF and HFrEF patients, with objective measures of functional capacity similar to HFpEF. Within the midrange LVEF HF population, recovered systolic function is a marker of more favorable prognosis.

Project description:AimsEchocardiographic assessment of left ventricular filling pressures is performed using a multi-parametric algorithm. Unselected sample of patients with heart failure with reduced ejection fraction (HFrEF) patients may demonstrate an indeterminate status of diastolic indices making interpretation challenging. We sought to test improvement in the diagnostic accuracy of standard and strain echocardiography of the left ventricle and left atrium (LA) to estimate a pulmonary capillary wedge pressure (PCWP) > 15 mmHg in patients with HFrEF.Methods and resultsOut of 82 consecutive patients, 78 patients were included in the final analysis and right heat catheterization, and echocardiogram was performed simultaneously. According to the univariable analysis, E wave velocity, the ratio between E-wave/A-wave (E/A, area under the curve [AUC] = 0.81, respectively), isovolumic relaxation time (AUC = 0.83), pulmonary vein D wave (AUC = 0.84), pulmonary vein S/D Ratio (AUC = 0.85), early pulmonary regurgitation velocity (AUC = 0.80), and accelerationa time at right ventricular out-flow tract (RVOT AT, AUC = 0.84) identified with the highest accuracy PCWP > 15 mmHg. They were all tested in multivariate analysis, and they were not independently correlated with PCWP. Tricuspid regurgitation (TR) velocity was measurement with the highest predictive value in identifying PCWP > 15 mmHg (AUC = 0.89), compared with other established parameters such as the ratio between e-wave velocity divided by mitral annular e' velocity (E/e'), deceleration time, or LA indexed volume (LAVi), which all reached a lower accuracy level (AUC = 0.75; 0.78; 0.76). Among strain measures, global longitudinal strain in four chamber view (GLS 4ch), the ratio between e-wave velocity divided by mitral annular e' strain rate (E/e'sr), and LA longitudinal strain at the reservoir phase were helpful in estimating elevated PCWP (AUC = 0.77; 0.76; 0.75). According to multivariable analysis, the following two models had the greatest accuracy in detecting PCWP > 15 mmHg: (i) TR velocity, LAVi, and E wave velocity (receiver operating characteristic [ROC]-AUC = 0.98), (ii) AT RVOT, LAVi and GLS 4ch (ROC-AUC = 0.96). Neither E/A (ROC-AUC = 0.81) nor E/e' (ROC-AUC = 0.75) was an independent predictor when included in the model. The two MODELS were applicable to the entire population and demonstrated better agreement with the invasive reference (91% and 88%) than the guidelines algorithm (77%) regardless of the type of rhythm.ConclusionsOur suggested echocardiographic approach could be used to potentially reduce the frequency of "doubtful" classification and increase the accuracy in predicting elevated left ventricular filling pressure leading to a decrease in the number of invasive assessment made by right heart catheterization.

Project description:Background: RVEF (right ventricular ejection fraction) measured by three-dimensional echocardiography (3DE) has been used in evaluating right ventricular (RV) function and can provide useful prognostic information in other various cardiovascular diseases. However, the prognostic value of 3D-RVEF in coronavirus disease 2019 (COVID-19) remains unknown. We aimed to investigate whether 3D-RVEF can predict the mortality of COVID-19 patients. Methods: A cohort of 128 COVID-19-confirmed patients who had undergone echocardiography were studied. Thirty-one healthy volunteers were also enrolled as controls. COVID-19 patients were divided into three subgroups (general, severe, and critical) according to COVID-19 severity-of-illness. Conventional RV structure and function parameters, RV free wall longitudinal strain (FWLS) and 3D-RVEF were acquired. RVFWLS was measured by two-dimensional speckle tracking echocardiography. RVEF was acquired by 3DE. Results: Compared with controls, 2D-RVFWLS and 3D-RVEF were both significantly decreased in COVID-19 patients (-27.2 ± 4.4% vs. -22.9 ± 4.8%, P < 0.001; 53.7 ± 4.5% vs. 48.5 ± 5.8%, P < 0.001). Critical patients were more likely to have a higher incidence of acute cardiac injury and acute respiratory distress syndrome (ARDS), and worse prognosis than general and severe patients. The critical patients exhibited larger right-heart chambers, worse RV fractional area change (RVFAC), 2D-RVFWLS, and 3D-RVEF and higher proportion of pulmonary hypertension than general and severe patients. Eighteen patients died during a median follow-up of 91 days. The multivariate Cox regression analysis revealed the acute cardiac injury, ARDS, RVFAC, RVFWLS, and 3D-RVEF were independent predictors of death. 3D-RVEF (chi-square to improve 18.3; P < 0.001), RVFAC (chi-square to improve 4.5; P = 0.034) and 2D-RVFWLS (chi-square to improve 5.1; P = 0.024) all provided additional prognostic value of higher mortality over clinical risk factors. Moreover, the incremental predictive value of 3D-RVEF was significantly (P < 0.05) higher than RVFAC and RVFWLS. Conclusion: 3D-RVEF was the most robust independent predictor of mortality in COVID-19 patients and provided a higher predictive value over conventional RV function parameters and RVFWLS, which may be helpful to identify COVID-19 patients at a higher risk of death.

Project description:BACKGROUND:In asymptomatic patients with severe aortic stenosis and preserved left ventricular ejection fraction, we sought to assess the incremental prognostic value of resting valvuloarterial impedence (Zva) and left ventricular global longitudinal strain (LV-GLS) to treadmill stress echocardiography. METHODS AND RESULTS:We studied 504 such patients (66±12 years, 78% men, 32% with coronary artery disease who underwent treadmill stress echocardiography between 2001 and 2012. Clinical and exercise variables (% of age-sex predicted metabolic equivalents [%AGP-METs]) were recorded. Resting Zva ([systolic arterial pressure+mean aortic valve gradient]/[LV-stroke volume index]) and LV-GLS (measured offline using Velocity Vector Imaging, Siemens) were obtained from the baseline resting echocardiogram. Death was the primary outcome. There were no major adverse cardiac events during treadmill stress echocardiography. Indexed aortic valve area, Zva, and LV-GLS were 0.46±0.1 cm2/m2, 4.5±0.9 mm Hg/mL per m2 and -16±4%, respectively; only 50% achieved >100% AGP-METs. Sixty-four percent underwent aortic valve replacement. Death occurred in 164 (33%) patients over 8.9±3.6 years (2 within 30 days of aortic valve replacement). On multivariable Cox survival analysis, higher Society of Thoracic Surgeons score (hazard ratio or HR 1.06), lower % AGP-METS (HR 1.16), higher Zva (HR 1.25) and lower LV-GLS (HR 1.12) were associated with higher longer-term mortality, while aortic valve replacement (HR 0.45) was associated with improved survival (all P<0.01). Sequential addition of ZVa and LV-GLS to clinical model (Society of Thoracic Surgeons score and %AGP-METs) increased the c-statistic from 0.65 to 0.69 and 0.75, respectively, both P<0.001); findings were similar in the subgroup of patients who underwent aortic valve replacement. CONCLUSIONS:In asymptomatic patients with severe aortic stenosis undergoing treadmill stress echocardiography, LV-GLS and ZVa offer incremental prognostic value.

Project description:BackgroundThe correlation between echocardiographic parameters and hemodynamics data in patients with heart failure with preserved ejection fraction (HFpEF) is unclear. It is important to find a non-invasive echocardiographic parameter for predicting exercise pulmonary capillary wedge pressure (PCWP).AimThis study sought to determine the correlation between echocardiographic parameters and hemodynamics data at rest and during exercise in HFpEF patients.Methods and resultsThis study was a cross-sectional cohort exploratory analysis of baseline data from the ILO-HOPE trial. A total of 34 HFpEF patients were enrolled. The average age was 70 ± 12 years, and most (74%) were women. The patients underwent invasive cardiac catheterization and expired gas analysis at rest and during exercise. Echocardiography including tissue Doppler imaging was performed, and global longitudinal strain and other novel diastolic function indexes were analyzed at rest and during exercise. At rest, no significant correlation was noted between resting PCWP and echocardiographic parameters. However, a significant correlation was observed between post-exercise PCWP and stress E/e' (septal, lateral, and mean) ratio (p = 0.003, 0.031, 0.012). Moreover, post-exercise ΔPCWP showed a good correlation with stress E/e' (septal, lateral, and mean; all p ≤ 0.001) and global longitudinal strain (GLS) during exercise (p = 0.03). After multivariate regression analysis with adjustment for possible confounding factors including age and sex, there was still a significant correlation between post-exercise ΔPCWP and E/e' (r = 0.62, p < 0.001 for E/e'mean).ConclusionOnly stress echocardiography derived tissue Doppler E/e' ratio is closely correlated with abnormal exercise hemodynamics (PCWP and post-exercise ΔPCWP) in HFpEF. This echocardiographic marker is substantially more sensitive than other novel echocardiographic parameters during exercise, and may have significant diagnostic utility for ambulatory HFpEF patients with dyspnea.Clinical trial registrationhttps://www.clinicaltrials.gov, identifier NCT03620526.

Dataset Information

Global longitudinal strain, ejection fraction, effort tolerance and normal echocardiography measurements in healthy Indians.

Introduction

Objective

Methods

Results

Conclusion

Publications

Global longitudinal strain, ejection fraction, effort tolerance and normal echocardiography measurements in healthy Indians.

Similar Datasets

OmicsDI is part of the ELIXIR infrastructure

Tweets