BACKGROUND: Reliable, non-invasive evaluation of right ventricular function, especially in congenital heart disease, is challenging. OBJECTIVES: The aim of this study was to evaluate Doppler tissue imaging (DTI) parameters of lateral tricuspid annular motion, mean rate of pressure rise during RV contraction (mean dP/dt) and indexed right ventricular (RV) stroke volume (RVSVi) as RV function indices in repaired tetralogy of Fallot (TOF). METHODS: DTI evaluation was performed in 25 repaired-TOF patients, aged 11+/-6, at rest and during dobutamine infusion and 20 controls at rest. RESULTS: TOF patients had lower (P<0.05) peak systolic velocity (Sa) (11.4+/-4 vs. 13.7+/-3.1 cm/s), early diastolic velocity (Ea) (11+/-3.1 vs. 16.3+/-3.5 cm/s) and Sa/time from onset of QRS to Sa (Sa/Q-Sa) (68.8+/-26.4 vs. 92.3+/-29.4 cm/s2) versus controls. Dobutamine increased (P<0.01) Sa (11.4+/-2.8-17.7+/-4.7 cm/s), Ea (11+/-3.1-15.6+/-3.9 cm/s), late diastolic velocity (Aa) (8.4+/-2-14.8+/-5 cm/s), Sa/Q-Sa (68.8+/-26.4-17 6.8+/-84.5 cm/s2), mean dP/dt (180+/-74-537+/-37 2 mmHg/s), and RVSVi (7.8+/-3.9-11.9+/-5.6 L/min/m2). RVSVi increase correlated (P<0.01) with that in Sa (r=0.6), Ea (r=0.5), Sa/Q-Sa (r=0.71), and mean dP/dt (r=0.57) while mean dP/dt increase correlated strongly with Sa/Q-Sa increase (r=0.88). CONCLUSION: DTI evaluation of tricuspid annular motion during dobutamine infusion in repaired TOF correlates with dP/dt and RV stroke volume and may help in assessing RV function and reserve.
BACKGROUND: Reliable, non-invasive evaluation of right ventricular function, especially in congenital heart disease, is challenging. OBJECTIVES: The aim of this study was to evaluate Doppler tissue imaging (DTI) parameters of lateral tricuspid annular motion, mean rate of pressure rise during RV contraction (mean dP/dt) and indexed right ventricular (RV) stroke volume (RVSVi) as RV function indices in repaired tetralogy of Fallot (TOF). METHODS: DTI evaluation was performed in 25 repaired-TOF patients, aged 11+/-6, at rest and during dobutamine infusion and 20 controls at rest. RESULTS: TOF patients had lower (P<0.05) peak systolic velocity (Sa) (11.4+/-4 vs. 13.7+/-3.1 cm/s), early diastolic velocity (Ea) (11+/-3.1 vs. 16.3+/-3.5 cm/s) and Sa/time from onset of QRS to Sa (Sa/Q-Sa) (68.8+/-26.4 vs. 92.3+/-29.4 cm/s2) versus controls. Dobutamine increased (P<0.01) Sa (11.4+/-2.8-17.7+/-4.7 cm/s), Ea (11+/-3.1-15.6+/-3.9 cm/s), late diastolic velocity (Aa) (8.4+/-2-14.8+/-5 cm/s), Sa/Q-Sa (68.8+/-26.4-17 6.8+/-84.5 cm/s2), mean dP/dt (180+/-74-537+/-37 2 mmHg/s), and RVSVi (7.8+/-3.9-11.9+/-5.6 L/min/m2). RVSVi increase correlated (P<0.01) with that in Sa (r=0.6), Ea (r=0.5), Sa/Q-Sa (r=0.71), and mean dP/dt (r=0.57) while mean dP/dt increase correlated strongly with Sa/Q-Sa increase (r=0.88). CONCLUSION: DTI evaluation of tricuspid annular motion during dobutamine infusion in repaired TOF correlates with dP/dt and RV stroke volume and may help in assessing RV function and reserve.
Authors: Benjamin W Eidem; Colin J McMahon; Radha R Cohen; Jin Wu; Irina Finkelshteyn; John P Kovalchin; Nancy A Ayres; Louis I Bezold; E O'Brian Smith; Ricardo H Pignatelli Journal: J Am Soc Echocardiogr Date: 2004-03 Impact factor: 5.251
Authors: Shivani M Bhatt; Yan Wang; Okan U Elci; Elizabeth Goldmuntz; Michael McBride; Stephen Paridon; Laura Mercer-Rosa Journal: J Am Soc Echocardiogr Date: 2018-09-27 Impact factor: 5.251
Authors: Eugenio Picano; Quirino Ciampi; Rodolfo Citro; Antonello D'Andrea; Maria Chiara Scali; Lauro Cortigiani; Iacopo Olivotto; Fabio Mori; Maurizio Galderisi; Marco Fabio Costantino; Lorenza Pratali; Giovanni Di Salvo; Eduardo Bossone; Francesco Ferrara; Luna Gargani; Fausto Rigo; Nicola Gaibazzi; Giuseppe Limongelli; Giuseppe Pacileo; Maria Grazia Andreassi; Bruno Pinamonti; Laura Massa; Marco A R Torres; Marcelo H Miglioranza; Clarissa Borguezan Daros; José Luis de Castro E Silva Pretto; Branko Beleslin; Ana Djordjevic-Dikic; Albert Varga; Attila Palinkas; Gergely Agoston; Dario Gregori; Paolo Trambaiolo; Sergio Severino; Ayana Arystan; Marco Paterni; Clara Carpeggiani; Paolo Colonna Journal: Cardiovasc Ultrasound Date: 2017-01-18 Impact factor: 2.062