alexa Prediction of Pulmonary Regurge and Right Ventricular Function in Asymptomatic Repaired Tetralogy of Fallot Patients in Developing Countries: A Comparison to Cardiac Magnetic Resonance Imaging
ISSN: 2155-9880

Journal of Clinical & Experimental Cardiology
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Research Article

Prediction of Pulmonary Regurge and Right Ventricular Function in Asymptomatic Repaired Tetralogy of Fallot Patients in Developing Countries: A Comparison to Cardiac Magnetic Resonance Imaging

Hala Agha*, Doaa Mahgoub Aly, Fatma Alzahraa Moustafa, Ahmed Kharabish, Yasser Hussein Kamal, Gehan H Hussein,
Lamiaa El- Zambely, Hassan El-Kiky, Mohamed Abd El-Raouf and Mohamed Youssef Abd El Rahman
Faculty of Medicine, Cairo University, Egypt
Corresponding Author : Hala Agha
Chief of Echocardiography Laboratory
Children Hospital Cairo University (CUCH)
Faculty of Medicine
Cairo University, and Cairo Kinder Clinic; 31 El Marwa Street
Off Shooting Club Street, Mohandesseen, Egypt
Tel: +201001113284, +2035856985
E-mail: [email protected], [email protected]
Received March 25, 2014; Accepted May 30, 2014; Published June 10, 2014
Citation: Agha H, Aly DM, Moustafa FA, Kharabish A, Kamal YH, et al. (2014) Prediction of Pulmonary Regurge and Right Ventricular Function in Asymptomatic Repaired Tetralogy of Fallot Patients in Developing Countries: A Comparison to Cardiac Magnetic Resonance Imaging. J Clin Exp Cardiolog 5:316. doi:10.4172/2155-9880.1000316
Copyright: © 2014 Agha H, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
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Abstract

Objective: To assess the value of conventional echocardiographic measurements for quantification of pulmonary regurge and right ventricular function in comparison to Cardiac Magnetic Resonance Imaging (CMR) after surgical repair of Tetralogy Of Fallot (TOF).

Methods: Twenty five asymptomatic children after TOF repair (9.2 ± 4 years) were compared to twenty five age matched healthy children. Echocardiographic quantification of pulmonary regurge was assessed by (1) pulmonary regurge jet width/pulmonary artery diameter, (2) pulmonary pressure half time, (3) pulmonary regurge index; pulmonary regurge duration to diastole duration, (4) no flow time; diastole duration - pulmonary regurge duration and (5) diastole/systole velocity time integral ratio. Measurements derived from conventional echocardiography were compared to pulmonary regurgitant fraction, right ventricular volumes and ejection fraction by CMR.

Results: On CMR, the pulmonary regurgitant fraction was 28.64 ± 10.2%. By conventional echocardiography, pulmonary regurge index and no flow time were found to offer the best prediction for severity of pulmonary regurge. Pulmonary regurge index of <0.8 has sensitivity of 86.36% and specificity of 100% (AUC=0.924) and no flow time of >64 msec has sensitivity of 81% and specificity of 100% (AUC=0.894) in identifying significant pulmonary regurge. Compared to controls, patients after TOF repair showed significantly lower right ventricle myocardial velocities, higher E/ E‘ ratio and prolonged MPI. Among the TOF patients, right ventricular MPI showed significant negative correlation (r=-0.402; P=0.008) with tricuspid valve annulus peak systolic velocity (S‘) and significant positive correlation (r= 0. 413; P=0.04) with right ventricle stroke volume by CMR.

Conclusion: Conventional echocardiography can offer a simple, readily available and accurate tool for quantification of pulmonary regurge and right ventricular function during mid- term follow up after surgical repair of tetralogy of Fallot.

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