scholarly journals Evaluation of the right ventricular function in hypertrophic obstructive cardiomyopathy: a strain and tissue Doppler study

2010 ◽  
pp. 697-702
Author(s):  
D Zemánek ◽  
P Tomašov ◽  
P Přichystalová ◽  
K Linhartová ◽  
J Veselka
Keyword(s):  
Strain Rate ◽  
Hypertrophic Obstructive Cardiomyopathy ◽  
Tissue Doppler ◽  
Doppler Imaging ◽  
Ejection Time ◽  
Alcohol Septal Ablation ◽  
Strain And Strain Rate ◽  
Doppler Study ◽  
Diastolic Velocity ◽  
The Right

We investigated the utility of strain, strain rate, and tissue Doppler imaging (TDI) for the evaluation of the right ventricle (RV) impairment in patients with a hypertrophic obstructive cardiomyopathy (HOCM) who underwent a successful alcohol septal ablation (ASA) and were without RV hypertrophy. A group of 19 patients suffering from HOCM with 22 controls was compared. The parameters of TDI were evaluated in mitral and tricuspid annulus. Strain and strain rate derived from TDI were assessed in an apical free wall of RV, as well as in basal segments of the left ventricle. Between both groups, there were significant differences only in isovolumic pre-ejection time (79.2±17.3 ms vs. 58.5±8.1 ms, p<0.01), isovolumic relaxation time (104.7±26.2 ms vs. 77.3±24.5 ms, p<0.01), myocardial performance (Tei) index measured from TDI (0.61±0.14 vs. 0.49±0.09, p<0.01), and early peak diastolic velocity of TDI (10.6±1.67 cm/s vs. 12.6±2.21 cm/s; p<0.05). Our results suggest the impairment of both systolic and diastolic RV function in patients suffering from HOCM. TDI-related parameters appear to be more sensitive than strain and strain rate for evaluation.

scholarly journals THE DIAGNOSTIC VALUE OF PULSED WAVE TISSUE DOPPLER IMAGING IN ASYMPTOMATIC BETA- THALASSEMIA MAJOR CHILDREN AND YOUNG ADULTS ; RELATION TO CHEMICAL BIOMARKERS OF LEFT VENTRICULAR FUNCTION AND IRON OVERLOAD .

2015 ◽  
Vol 7 ◽  
pp. e2015051 ◽  
Author(s):  
Seham Ragab
Keyword(s):  
Iron Overload ◽  
Serum Ferritin ◽  
Tissue Doppler Imaging ◽  
Mitral Annulus ◽  
Tissue Doppler ◽  
Left Ventricular ◽  
Doppler Imaging ◽  
Beta Thalassemia ◽  
Ejection Time ◽  
Diastolic Velocity

Background: Cardiac iron toxicity is the leading cause of death among  β-halassaemia major (TM)  patients.  Once  heart failure becomes overt , it will be  difficult to reverse . Objectives: To investigate non overt cardiac dysfunctions  in TM patients using  pulsed wave Tissue Doppler  Imaging (TD I) and its relation to the iron overload and brain natruritic peptide (BNP). Methods: Thorough  clinical , conventional echo and  pulsed  wave TDI  parameters were compared between  asymtomatic 25 β-TM  patients  and 20 age and gender matched individuals. Serum ferritin and plasma BNP  levels were assayed by  ELISA .  Results: TM patients had significant higher mitral inflow early diastolic (E) wave and  non significant other conventional echo  parameters. Pulsed wave TDI revealed systolic and diastolic dysfunctions in the form of significant higher  isovolumetric contraction time (ICT) , ejection time ( E T) and  isovolumetric relaxation time (IRT) with significantly lower  mitral annulus  early diastolic velocity E` (12.07 ±2.06 vs 15.04±2.65 ,P= 0.003)  in patients compared to  controls. Plasma BNP was higher in patients compared to the controls.  Plasma BNP and serum ferritin had significant correlation with each other and with pulsed wave conventional and TDI indices of systolic and diastolic functions.  Patients with E/E` ≥ 8 had  significant higher  serum ferritin  and plasma BNP levels compared to those with E/E` ratio < 8 without difference in Hb levels .Conclusion:  Pulsed wave TDI  is an  important diagnostic tool for latent cardiac dysfunction in iron loaded TM patients and is related to iron overload and BNP .    

Deformation echocardiography

2016 ◽  
Author(s):  
Matteo Cameli ◽  
Partho Sengupta ◽  
Thor Edvardsen
Keyword(s):  
Strain Rate ◽  
Tissue Doppler Imaging ◽  
Speckle Tracking ◽  
Radial Strain ◽  
Tissue Doppler ◽  
Strain Imaging ◽  
Left Ventricular ◽  
Doppler Imaging ◽  
Deformation Imaging ◽  
Strain And Strain Rate

Echocardiographic strain imaging, also known as deformation imaging, has been developed as a means to objectively quantify regional and global myocardial function. First introduced as a post-processing feature of tissue Doppler imaging velocity converted to strain and strain rate, strain imaging has more recently also been derived from speckle tracking analysis. Tissue Doppler imaging yields velocity information from which strain and strain rate are mathematically derived whereas two-dimensional speckle tracking yields strain information from which strain rate and velocity data are derived. Data obtained from these two different techniques may not be equivalent due to limitations inherent with each technique. Speckle tracking analysis can generate longitudinal, circumferential, and radial strain measurements and left ventricular twist. Although potentially useful, these measurements are also complicated and frequently displayed as difficult-to-interpret waveforms. Strain imaging is now considered a robust research tool and has great potential to play many roles in routine clinical practice. This chapter explains the fundamental concepts of deformation imaging, the technical features of strain imaging using tissue Doppler imaging and speckle tracking, and the strengths and weaknesses of these methods.

scholarly journals Strain and Strain Rate To Evaluate Right Heart Function of Ebstein Anomaly (EA) Patients Before and After Operation

2020 ◽  
Vol 23 (5) ◽  
pp. E636-E640
Author(s):  
Xiang-jun Liu ◽  
Lian-yi Wang ◽  
Hong-yin Li ◽  
Jian Cui ◽  
Rui Liu
Keyword(s):  
Strain Rate ◽  
Heart Function ◽  
Tissue Doppler ◽  
Doppler Imaging ◽  
Right Heart ◽  
Ebstein Anomaly ◽  
Basal Segment ◽  
Right Heart Function ◽  
Strain And Strain Rate ◽  
Before And After

Objective: This study was aimed to elucidate the feasibility of using right ventricular (RV) strain and strain rate to evaluate right heart function of Ebstein anomaly (EA) patients before and after operation. Methods: Sixty EA patients and 30 healthy controls underwent echocardiography (UCG) for evaluation of right heart function. Preoperative UCG and 1-week and 3-month postoperative UCG were performed in EA patients. RV strain and strain rate were measured on the four-chamber section of tissue Doppler imaging (TDI). Results: The strain and strain rate representative of right ventricle systolic function were reduced prior to operation. RV strain and strain rate improved after the operation (P < .001), most significantly in the basal segment and middle segment of the free wall of the right ventricle as well as the basal segment of the interventricular septum (P < .001). Conclusions: The measurement of RV strain and strain rate on tissue Doppler imaging can be employed to assess the preoperative and postoperative RV function, proves the positive effect of tricuspid valve repair on right heart function, and offers more insight on right heart function evaluation.

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