Abstract 2652: Primary Angioplasty And Thrombolysis For ST Elevation Myocardial Infarction Result In Similar Left Ventricular Function And Rates Of Inducible Ventricular Tachycardia.

Circulation ◽  
2007 ◽  
Vol 116 (suppl_16) ◽  
Author(s):  
James J Chong ◽  
Anand N Gannesan ◽  
Vickie Eipper ◽  
Pramesh Kovoor
Keyword(s):  
Myocardial Infarction ◽  
Ventricular Tachycardia ◽  
Left Ventricular Function ◽  
Ventricular Function ◽  
Intravenous Thrombolysis ◽  
Primary Angioplasty ◽  
Left Ventricular ◽  
High Rate ◽  
Left Ventricular Ejection ◽  
Ventricular Ejection Fraction

Introduction/Hypothesis. Electrophysiological studies (EPS) predict risk of sudden death after myocardial infarction. Primary angioplasty has become the preferred method of treatment for STEMI due to improved patency rates of the infarct related artery, along with decreased rates of reinfarction and death. Despite this, intravenous thrombolysis remains the first line treatment in 30 –70% of cases worldwide. We assessed the hypothesis that the left ventricular ejection fraction (LVEF) and rates of inducible VT would be more favorable in patients treated with primary angioplasty compared to thrombolysis. Methods/Results. Consecutive patients receiving primary angioplasty (n=225) or thrombolysis (n=195) for STEMI were included. Mean LVEF assessed predominantly by gated blood heart pool scan was 47.7 ±12.1% for the primary angioplasty group and 46.3 ±13.0% for the thrombolysis group (p=0.30). The proportion of patients with LVEF less than 40% was 29.7% in the primary angioplasty group and 29.6% in the thrombolysis group (p=0.98). Patients with LVEF less than 40% underwent EPS. VT was inducible in 10% of patients who had primary angioplasty versus 11% of patients who had thrombolysis (p=0.69). Mean cycle length (CL) of inducible VT in milliseconds (ms) was 246 ± 48 for the angioplasty group and 261 ± 62 for thrombolysis group (p=0.65). Implantable cardiac defibrillators were inserted in 30 patients of which 8 (27%) had appropriate device activations. The mean time from infarction to first spontaneous activation was 387 ± 458 days. Mean CL of spontaneous VT was 314 ± 62 ms. Conclusions. In conclusion patients treated with thrombolysis or primary angioplasty for STEMI are likely to have similar resultant left ventricular function and rates of inducible ventricular tachycardia. There was a surprisingly high rate of spontaneous defibrillator activations often occurring late after myocardial infarction. Table 1: Patient and treatment characteristics for each group.

STUDY THE CHANGES IN MORPHOLOGY AND LEFT VENTRICULAR FUNCTION IN OVERWEIGHT-OBESE CHILDREN 5-15 YEARS OLD WHO VISITED CHILDREN'S HOSPITAL IN CAN THO

2011 ◽  
pp. 36-42
Author(s):  
Hung Viet Bui ◽  
Thi Cu Nguyen
Keyword(s):  
Left Ventricular Function ◽  
Ventricular Function ◽  
Left Ventricular ◽  
Left Ventricular Ejection ◽  
Control Group ◽  
Obese Children ◽  
Ventricular Ejection Fraction ◽  
Children's Hospital ◽  
Number Of Patients ◽  
Children’S Hospital

Objective: In Vietnam, obesity is increasing particularly in many large cities. Adult cardiovascular diseases are often derived from cardiovascular disorders during the children period. The implementation of early measures to prevent atherosclerosis, such as weight control, better lipid control will reduce the cardiovascular complications, such as hypertension (HTA), coronary heart diseases and some other diseases. Materials and Methods: Overweight - obese children from 5 to 15 years old who visited the Children's Hospital in Can Tho from May 2009 to May 2010. Total number of patients were chosen as 50 children. Method: Descriptive cross-sectional. Children in the study underwent Doppler ultrasound exam to evaluate cardiac morphology and cardiac function. Results: There were increases in left ventricular systolic diameter, left ventricular diastolic diameter, LV mass in overweight-obese children in the study compared with controls at all ages (p <0.05 ). Left ventricular ejection fraction in overweight-obese children in the study was lower than the control group at all ages (p> 0.05). The average rate of left ventricular shortening of overweight-obese children in the study was 34.8 ± 4.5(%). There was no difference in the rate of shortening of the left ventricle in overweight-obese children in the study compared with controls (p>0.05). There was no relationship between variation in morphology and left ventricular function with the degree of overweight-obesity in this study. Conclusion: The study showed that disturbances in morphology and left ventricular function in overweight-obese children but did not find a strong association with the disorder degree of overweight-obesity.

scholarly journals Time saving, simple and reproducible method to quantify left ventricular function in patients with atrial fibrillation

2020 ◽  
Vol 41 (Supplement_2) ◽  
Author(s):  
K.V Bunting ◽  
S Gill ◽  
A Sitch ◽  
S Mehta ◽  
K O'Connor ◽  
...  
Keyword(s):  
Atrial Fibrillation ◽  
Left Ventricular Function ◽  
Ventricular Function ◽  
Controlled Trial ◽  
Global Longitudinal Strain ◽  
Intraclass Correlation ◽  
Left Ventricular ◽  
Left Ventricular Ejection ◽  
Funding Source ◽  
Ventricular Ejection Fraction

Abstract Introduction Echocardiography is essential for the management of patients with atrial fibrillation (AF), but current methods are time consuming and lack any evidence of reproducibility. Purpose To compare conventional averaging of consecutive beats with an index beat approach, where systolic and diastolic measurements are taken once after two prior beats with a similar RR interval (not more than 60 ms difference). Methods Transthoracic echocardiography was performed using a standardized and blinded protocol in patients enrolled into the RAte control Therapy Evaluation in permanent AF randomised controlled trial (RATE-AF; NCT02391337). AF was confirmed in all patients with a preceding 12-lead ECG. A minimum of 30-beat loops were recorded. Left ventricular function was determined using the recommended averaging of 5 and 10 beats and using the index beat method, with observers blinded to clinical details. Complete loops were used to calculate the within-beat coefficient of variation (CV) and intraclass correlation coefficient (ICC) for Simpson's biplane left ventricular ejection fraction (LVEF), global longitudinal strain (GLS) and filling pressure (E/e'). Results 160 patients (median age 75 years (IQR 69–82); 46% female) were included, with median heart rate 100 beats/min (IQR 86–112). For LVEF, the index beat had the lowest CV of 32% compared to 51% for 5 consecutive beats and 53% for 10 consecutive beats (p&lt;0.001). The index beat also had the lowest CV for GLS (26% versus 43% and 42%; p&lt;0.001) and E/e' (25% versus 41% and 41%; p&lt;0.001; see Figure for ICC comparison). Intra-operator reproducibility, assessed by the same operator from two different recordings in 50 patients, was superior for the index beat with GLS bias −0.5 and narrow limits of agreement (−3.6 to 2.6), compared to −1.0 for 10 consecutive beats (−4.0 to 2.0). For inter-operator variability, assessed in 18 random patients, the index beat also showed the smallest bias with narrow confidence intervals (CI). Using a single index beat did not impact on the validity of LVEF, GLS or E/e' measurement when correlated with natriuretic peptides. Index beat analysis substantially shortened analysis time; 35 seconds (95% CI 35 to 39 seconds) for measuring E/e' with the index beat versus 98 seconds (95% CI 92 to 104 seconds) for 10 consecutive beats (see Figure). Conclusion Index beat determination of left ventricular function improves reproducibility, saves time and does not compromise validity compared to conventional quantification in patients with heart failure and AF. After independent validation, the index beat method should be adopted into routine clinical practice. Comparison for measurement of E/e' Funding Acknowledgement Type of funding source: Public grant(s) – National budget only. Main funding source(s): National Institute of Health Research UK

scholarly journals Assessment of aortic and mitral annuli dynamics during the cardiac cycle using speckle tracking echocardiography

2014 ◽  
Vol 1 (1) ◽  
pp. 11-16 ◽  
Author(s):  
Wenjuan Bai ◽  
Hui Li ◽  
Hong Tang ◽  
Qing Zhang ◽  
Ye Zhu ◽  
...  
Keyword(s):  
Left Ventricular Function ◽  
Ventricular Function ◽  
Speckle Tracking ◽  
Cardiac Cycle ◽  
Speckle Tracking Echocardiography ◽  
Left Ventricular ◽  
Healthy Adults ◽  
Aortic Annulus ◽  
Left Ventricular Ejection ◽  
Ventricular Ejection Fraction

The aims of this study were i) to evaluate mitral and aortic annuli excursion, and aortomitral angle (AMA) during the cardiac cycle in healthy adults using two-dimensional speckle tracking echocardiography, ii) to assess two annuli dynamics and coupling behaviors as an integral, and iii) to detect the relation between two annuli and left ventricular ejection fraction (LVEF). A total of 74 healthy adults underwent transthoracic echocardiography. In the parasternal long-axis view, a number of points were extracted, including right coronary aortic annular, aortomitral fibrous junction, and posterior mitral annular points. The annuli excursion and AMA were measured using a speckle tracking-derived software during the cardiac cycle. During the isovolumic contraction and the isovolumic relaxation phase, annuli excursion and AMA remain stable for a short time. During the systole, annuli excursion increased sharply to the maximum, while AMA narrowed quickly to the minimum value. During the diastole, there are three patterns of decrease in annuli excursion and AMA expansion in different phases. The annuli excursion of three points correlates well with the LVEF (right coronary aortic annulus excursion, r=0.71, P<0.05; non-coronary aortic annulus excursion, r=0.70, P<0.05; posterior mitral annulus excursion, r=0.82, P<0.05). Moreover, there are positive correlations between annuli excursion and the variation of AMA (r=0.60, P<0.05). The annuli excursion and AMA have various regular patterns in healthy adults. The interactions of mitral and aortic annuli correlate with the left ventricular function. Our findings may have relevance to the evaluation of left ventricular function and presurgical planning of patients with valvular diseases.

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