Acute pacing parameters of endocardial ventricular leads: comparison of two electrode designs
Machejek, J.; Lelakowski, J.; Bednarek, J.; Małecka, B.
Kardiologia Polska 61(Suppl 2): Ii110-Ii114
2004
ISSN/ISBN: 0022-9032 PMID: 20527427 Document Number: 568741
Active-fixation pacemaker leads seem to have advantages over passive-fixation ones, such as the possibility of pacing at various sites, low dislodgement rate, and they are easier to extract. Unexpectedly their popularity in European countries is not high. The comparative estimation of acute electrical parameters between high-impedance fractal passive-fixation and traditional active-fixation leads. Second aim of the study was the evaluation of commonly used active- and passive-fixation leads in order to find the best solution for ambulatory implantation. 35 patients received passive-fixation Biotronik Synox SX60BP pacemaker leads and 35 patients received active-fixation Biotronik YP60BP pacemaker leads. Intraoperative measurement of pacing threshold, impedance, R amplitude, and slew-rate were performed. The pacing threshold was statistically significant lower (p = 0.1) in passive-fixation "tined-tip" SX60BP group (0.45 vs. 0.63). In 3 active-fixation cases "exit block" with ineffective pacing occured in early post-operative period. Active-fixation YP60BP electrodes should not be used for ambulatory implantation course.