Fragmented QRS efficiency to predict right cardiac function in patients with repaired tetralogy of fallot: comparison with cardiac magnetic resonance parameters
Code: G-24935
Authors: Bita Zargaran ℗, Mohammadreza Naghibi , Hassan Mottaghi Moghaddam ©
Schedule: Not Scheduled!
Download: Download Poster
Abstract:
Background
The incidence of Tetralogy of Fallot (TOF) as the most common cyanotic congenital heart disease (CHD) is 7-10%. During this time, according to the patient situation pulmonary valve replacement (PVR) should be considered. cardiac magnetic resonance (CMR) is the gold standard but expensive modality. .the electrocardiogram (ECG) is accessible in every clinic. The parameters of ECG can reveal the patient’s prognosis. We aim to assess the correlation between electrocardiogram findings with cardiac parameters in CMR of the patients with repaired TOF.
Methods
In this cross-sectional study, we collected the medical report of the patients who underwent TOF repair. According to echocardiography findings, CMR to decide PVR was done. The ECG was magnified by Photoshop and interpretation was done. The parameters in the CMR report and ECG were analyzed by SPSS. we considered P 0.05 as the statistically significant
Results
Of this study's 20 patients (age 14.26±9.17), 75% underwent PVR. Patients with fQRS had significantly higher right ventricle diastolic (RVED) and systolic (RVES) volumes. We found no significant correlation between ventricle function with QT duration and QT correction (QTc). Also, low right ventricle ejection fraction (RVEF) significantly correlated with fragmented QRS (fQRS).
Conclusions
Increased RVED and RVES volume were shown in patients with fQRS. Early detection of lower RVEF could be based on the existence of fQRS. According to the parameters of ECG, we could assess the RV function to prove the decision of the PVR.
Keywords
Fragmented QRS, Cardiac magnetic resonance, tetralogy of Fallot