[Dual chamber pacing induced heart failure assessed by velocity vector imaging: a case report].
Sun
Yin-guang
YG
Xu
Yi-qiong
YQ
Ruan
Wen
W
D000368:Aged; D002304:Cardiac Pacing, Artificial / Q000009:adverse effects*; D004452:Echocardiography / Q000379:methods*; D006333:Heart Failure / Q000000981:diagnostic imaging* / Q000209:etiology*; D006801:Humans; D008297:Male