The role of left ventricular long axis contraction in patients with asymptomatic non-ischemic mitral valve regurgitation and normal systolic function

Paraskevaidis, Ioannis; Kyrzopoulos, Stamatis; Tsiapras, Dimitrios; Iliodromitis, Efstathios K.; Parissis, John; Farmakis, Dimitrios; Kremastinos, Dimitrios Th.

doi:10.1016/j.ijcard.2006.12.089

Cited by 14 publications

(13 citation statements)

References 29 publications

(28 reference statements)

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…In people, TDI‐based markers of decreased long‐axis contraction have been shown to unmask subclinical systolic LV dysfunction in asymptomatic patients with aortic and mitral regurgitation 31–33 . Furthermore, TDI has been used to detect systolic LV dysfunction in patients with diastolic heart failure, 34 to uncover asymptomatic patients with myocardial disease, 35–37 and to discriminate between hypertrophic cardiomyopathy and athlete's heart 37,38 .…”

Section: Discussionmentioning

confidence: 99%

Methods and Reliability of Tissue Doppler Imaging for Assessment of Left Ventricular Radial Wall Motion in Horses

Schwarzwald

Schober

Bonagura

2009

Veterinary Internal Medicne

View full text Add to dashboard Cite

Background: Noninvasive assessment of left ventricular (LV) function is incompletely studied in horses. Objectives: The goals of this study were to investigate the feasibility, techniques, and reliability of tissue Doppler imaging (TDI) for characterization of LV radial wall motion in healthy horses.Animals: Three Standardbreds, 3 Thoroughbreds; age 8-14 years; body weight 517-606 kg. Methods: Repeated echocardiographic examinations were performed by 2 observers in unsedated horses using TDI. Test reliability was determined by estimating measurement variability, within-day interobserver variability, and between-day interobserver and intraobserver variability of all echocardiographic variables. Variability was expressed as coefficient of variation (CV) and the absolute value below which the difference between 2 measurements will lie with 95% probability.Results: Assessment of LV radial wall motion by TDI was feasible in all horses. Measurement variabilities were very low (CV o 5%) to low (CV 5-15%) for most variables. Within-day interobserver variability as well as between-day interobserver and intraobserver variabilities were low to moderate (CV 16-25%) for most variables. All pulsed-wave TDI variables of systolic LV function showed very low to low variability, whereas some of the variables of LV diastolic and LA function showed moderate to high (CV 4 25%) variability. Pulsed-wave TDI variables appeared more reliable than color TDI variables.Conclusions and Clinical Importance: Measurement of TDI indices of LV function is feasible and reliable in adult Standardbred and Thoroughbred horses. The clinical relevance of LV function assessment by TDI remains to be determined.

show abstract

Section: Discussionmentioning

confidence: 99%

Methods and Reliability of Tissue Doppler Imaging for Assessment of Left Ventricular Radial Wall Motion in Horses

Schwarzwald

Schober

Bonagura

2009

Veterinary Internal Medicne

View full text Add to dashboard Cite

show abstract

“…Несмотря на то что оценка состояния миокарда ЛЖ посредством стресс-эхокардиографии при митральной регургитации пока имеет небольшую доказательную базу, результаты стресс-эхокардиографии являются информативными у пациентов с клиникой и по меньшей мере умеренно выраженной митральной регургитацией [38]. Cнижение фракции выброса (ФВ), сократительного резерва ЛЖ и появление симптомов во время стресс-эхокардиографии (прирост значений ФВ <5% или прирост значений ГПСД ЛЖ <2%) являются предикторами послеоперационной систолической дисфункции ЛЖ у пациентов после хирургического лечения митральных пороков [39][40][41][42].…”

Section: спекл-трекинг стресс-эхокардиография в оценке клапанных пороunclassified

Capabilities and Limitations of Speckle Tracking Stress Echocardiography

Степанова

Alekhin

2019

SMJ

View full text Add to dashboard Cite

Stress echocardiography is a technique that allows to evaluate myocardial contractility and intracardiac hemodynamics under conditions of physical exercise or reaction to a pharmacological drug. Evaluation of systolic function of the left ventricle plays an important role in establishing the prognosis and choosing a treatment strategy for various cardiovascular diseases. Speckle tracking technique is one of the most promising methods for determining values of left ventricular deformation, due to which not only visual, but also quantitative assessment of left ventricular myocardial contractility is possible at rest and during stress tests. In this review, we analyzed the possibility of using speckle tracking stress echocardiography with physical exercise or with the pharmacological drug, in order to diagnose various diseases, such as ischemic heart disease, valvular heart disease, diabetes mellitus, and microvascular damage. Along with this, differences between the values of the longitudinal systolic deformation depending on age were considered. We also compared diagnostic values of the data of speckle-tracking stress echocardiography and coronary angiography and values of the data of speckle-tracking stress echocardiography and computed tomography of the coronary arteries.

show abstract

“…The lack of contractile reserve predicts decrease in LVEF and symptoms at follow-up in medically managed patients; it also predicts post-operative LV systolic dysfunction in surgically treated patients. 4,[30][31][32][33][34][35][36][37][38][39][40][41][42] When MR is not severe at rest, the dataset should include colour flow Doppler (to allow off-line quantification of severity by PISA method and vena contracta of the regurgitant jet), MR CW Doppler for quantification of severity by PISA method, TR CW Doppler for estimation of the SPAP, and LV views for global and regional systolic function assessment. Image acquisition should be performed in this order as MR severity and SPAP may decrease immediately on termination of the test.…”

Section: Primary Mrmentioning

confidence: 99%

“…4,19 Impact on Treatment ESC/EACTS and AHA/ACC guidelines consider aortic valve replacement (AVR) class I indication, level of evidence B, in patients with severe AR and symptoms revealed by exercise testing. 42,43…”

Section: Severe Aortic Regurgitation Without Symptomsmentioning

confidence: 99%

“…[63][64][65][66][67][68][69] Low-flow, Low-gradient AS with Reduced LV Ejection Fraction Classical LF-LG AS is defined as an aortic valve area (AVA) <1.0 cm 2 , a mean gradient <40 mmHg and an LVEF < 50%. 42,43 Low-dose dobutamine SE is useful in these patients to assess stenosis severity and LV functional reserve. 64 Fig.- After acquisition at rest, Doppler tracings and LV images are obtained at each dobutamine infusion stage ; the dose increment is delayed until all recordings are considered optimal.…”

Section: Impact On Treatmentmentioning

confidence: 99%

See 1 more Smart Citation