N-terminal pro-brain natriuretic peptide as a marker in follow-up patients with tetralogy of fallot after total correction

• Main Authors: A. Khositseth, J. Manop, P. Khowsathit, S. Siripornpitak, R. Pornkul, P. Lolekha, S. Attanawanich
• Other Authors: Mahidol University
• Format: Article
• Published: 2018
• Subjects: Medicine
• Online Access: https://repository.li.mahidol.ac.th/handle/123456789/24735

Patients with tetralogy of Fallot (TOF) after total correction usually have residual pulmonary regurgitation resulting in right ventricular (RV) dilatation and dysfunction. This study was performed to evaluate N-terminal pro-brain natriuretic peptide (NT-proBNP) in predicting RV dilatation and RV dysfunction in TOF after total correction. Twenty-one patients with TOF after total correction (12 males and 9 females, 12.06 ± 2.54 years old) underwent echocardiography, cardiac magnetic resonance imaging (MRI), and blood sampling for NT-proBNP. Mean time after total correction was 7.59 ± 2.30 years. From cardiac MRI study, mean right ventricular end diastolic volume index (RVEDVi) was 148.36 ± 64.50 ml/m2 and mean right ventricular ejection fraction (RVEF) was 35.50 ± 10.50%. Right ventricular dilatation was considered if RVEDVi was >108 ml/m2 and RV dysfunction was considered if RVEF was <40%. A plasma NT-proBNP level of 115 pg/ml was identified by receiver operating characteristic analysis in predicting RV dilatation and/or dysfunction. At this value, the sensitivity and specificity for predicting RV dilatation, RV dysfunction, and both RV dilatation and dysfunction were 71 and 100%, 71 and 71%, and 83 and 78%, respectively. In conclusion, plasma NT-proBNP level may be helpful in follow-up patients. Plasma NT-proBNP levels >115 pg/ml can be used as a marker in the detection of RV dilatation and dysfunction. © 2007 Springer Science+Business Media, LLC.