Triplane tissue Doppler imaging to evaluate mechanical dyssynchrony before and after cardiac resynchronization in a patient with congenitally corrected transposition of the great arteries.
We report the case of a 13-year-old girl with congenitally corrected transposition of the great arteries. Since the implantation of a conventional pacemaker for acquired complete atrioventricular block, the patient experienced increased heart failure symptoms. Using triplane tissue Doppler imaging, significant intraventricular dyssynchrony induced by unilateral pacing and associated with diminished exercise capacity was demonstrated. A biventricular pacemaker was successfully implanted transvenously, leading to synchronous activation of the systemic ventricle and improved exercise capacity.
Van de Veire
Nico R
NR
Department of Cardiology, Leiden University Medical Center, The Netherlands. nico.vandeveire@ugent.be
Blom
Nico A
NA
Holman
Eduard R
ER
Schalij
Martin J
MJ
Bax
Jeroen J
JJ
D000293:Adolescent; D002304:Cardiac Pacing, Artificial / Q000379:methods*; D015150:Echocardiography, Doppler / Q000379:methods*; D017079:Exercise Tolerance; D005260:Female; D006327:Heart Block / Q000209:etiology* / Q000628:therapy*; D006801:Humans; D010138:Pacemaker, Artificial; D019919:Prosthesis Implantation / Q000379:methods; D014188:Transposition of Great Vessels / Q000150:complications* / Q000628:therapy; D016896:Treatment Outcome; D018754:Ventricular Dysfunction / Q000000981:diagnostic imaging*