Systolic Right Ventricular Function in Pediatric and Adolescent Patients with Tetralogy of Fallot: Echocardiography versus Magnetic Resonance Imaging - 10/08/11
, Bert Nagel, MD a, William Ravekes, MD b, Allen D. Everett, MD b, Hans Peter Stueger, PhD c, Bernd Heinzl, MD a, Erich Sorantin, MD d, Gerhard Cvirn, PhD e, Peter Fritsch, MD a, Andreas Gamillscheg, MD a
Reprint requests: Martin Koestenberger, PhD, MD, Department of Pediatrics; Medical University Graz Auenbruggerplatz 30; A-8036 Graz, Austria.Abstract |
Objective |
The tricuspid annular plane systolic excursion (TAPSE) as an echocardiographic index to assess right ventricular (RV) systolic function has not been investigated thoroughly in pediatric patients and adolescents with tetralogy of Fallot (TOF) after surgical repair.
Methods |
TAPSE was determined in 131 patients with TOF and 252 age-matched normal subjects. TAPSE values were compared with RV ejection fraction (EF) and indexed RV end-diastolic volume (EDVi) determined by magnetic resonance imaging in a cross-sectional study design. TAPSE values were also correlated to QRS duration (QRSd) determined by electrocardiogram.
Results |
The TAPSE values showed a positive correlation with age in normal subjects. The TAPSE was not decreased in infants and young children with TOF compared with normal subjects. A significant reduction of TAPSE values with increasing time after surgical repair was observed. After a mean of 7 years after surgical repair, the TAPSE values become significantly reduced compared with age-matched controls, being below the lower bound of –2 standard deviations. A positive correlation between TAPSE with RVEF and a negative correlation between TAPSE with RVEDVi were observed. A significant positive correlation was found between QRSd and RVEDVi, and a significant negative correlation was found between QRSd and RVEF.
Conclusion |
Although TAPSE was initially preserved, impaired TAPSE was observed with increasing time after surgical repair in pediatric patients with TOF.
Le texte complet de cet article est disponible en PDF.Keywords : Ejection fraction, Magnetic resonance imaging, M-mode, Pediatric patients, Right ventricular systolic function, Tetralogy of Fallot, Tricuspid annular plane systolic excursion
Abbreviations : BSA, CHD, EDVi, EF, LV, MRI, PA, PR, QRSd, RV, TAP, TAPSE, TAPSV, TOF, TR
Plan
Vol 24 - N° 1
P. 45-52 - janvier 2011 Retour au numéro
Article précédent
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