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- W2358256038 abstract "Objective To investigate the effects and technical difficulties of initial stage cardiac resynchronization therapy(CRT) implantation in patients with chronic heart failure(CHF).Method The cardiac function indexes between before and 6 months after CRT implantation were compared in 20 patients.The procedures of left ventricular leads were configured and the prognosis were followed up.Results All cardiac function indexes in 6 months after CRT were ameliorated significantly(P0.01).At follow-up of 32.9±21.9 months,4 cases died of a sudden death and 3 cases died of non-cardiac causes.The double ventricular pacing were changed to double-site pacing of right ventricle because the left ventricular leads were aborted to enter into coronary sinus in 2 cases(2/20,10%).The left ventricular lead were fixed into an anastomotic branch from middle cardiac vein which is anastomosesd with the target coronary vein via middle cardiac vein instead of the target vein itself because that fixation of the left ventricular lead into the target vein was failed(1 case,1/20,5%).A successful implantation was achieved in a patient with segmental stenostic coronary vein.Dislocations of the left ventricular leads after implantation happened in 3 patients(3/20,15%) and all were reset successfully.Coronary artery/vein system angiography before CRT implantation procedures were carried out in 9 patients(9/20,45%).Diaphragm stimulation were all avoided by regulating the lead positions.Conclusion It is effective for CRT in patients with CHF.A coronary artery/vein system angiography before CRT procedure is benefit.Double-site pacing of right ventricle does not improve the cardiac functions markedly.Diaphragm stimulation could be avoided by appropriate regulation of left ventricular lead positions." @default.
- W2358256038 created "2016-06-24" @default.
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- W2358256038 date "2012-01-01" @default.
- W2358256038 modified "2023-09-27" @default.
- W2358256038 title "The effects and technical difficulties during a learning curve of cardiac resynchronization therapy in patients with chronic heart failure" @default.
- W2358256038 hasPublicationYear "2012" @default.
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