[Mechanism of cardiac resynchronization therapy by real-time three-dimensional echocardiography in patients with heart failure].
We report the case of a 66-year-old man with heart failure NYHA class IV treated with biventricular pacing for cardiac resynchronization. The patient was evaluated by real-time three-dimensional transthoracic echocardiography before and 48 hours after pacemaker implantation. The use of three-dimensional echocardiography contributed to understanding the underlying mechanism involved in cardiac resynchronization therapy by demonstrating enhanced synchrony of myocardial segments, which resulted in the patient's clinical improvement.
Vieira
Marcelo Luiz Campos
ML
Instituto do Coração do Hospital das Clínicas, FMUSP, São Paulo, SP. mlcvieira@aol.com
Maddukuri
Prasad V
PV
Phang
Robert S
RS
Pandian
Natesa G
NG
Mathias Júnior
Wilson
W
Ramires
José A F
JA
D000368:Aged; D002303:Cardiac Output, Low / Q000000981:diagnostic imaging / Q000628:therapy*; D002304:Cardiac Pacing, Artificial / Q000379:methods*; D002306:Cardiac Volume / Q000502:physiology; D019560:Echocardiography, Three-Dimensional / Q000379:methods; D006352:Heart Ventricles / Q000000981:diagnostic imaging; D006801:Humans; D007090:Image Interpretation, Computer-Assisted / Q000379:methods*; D008297:Male; D016276:Ventricular Function