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REBLAMPA Rev. bras. latinoam. marcapasso arritmia ; 8(n.esp): 214-8, out. 1995. graf
Article in English | LILACS | ID: lil-165654

ABSTRACT

Thirty-five patients received a Capsure Z Medtronic bipolar model 5034 for the ventricle and 5534 for the atrium. These have 1.2 mm2 totally proprous, platinized, steroid eluting distal electrodes. The control group was repesented by 14 consective patients reciving CapSure SP medtronic model 5024 for the ventricle and 5524 for the atrium. At implant and during the follow-up period (6 months), CapSure Z and SP showed similar low pacing theresholds without early peaking in atrium (0.5 +/- 0.26 V vs 0 +/- 0.21 V at 0.5 msec P=NS., 0.06 +/- 0.01 msec at 1.6 V P=NS, respectively) and while Capsure Z showed a lewr value at six months in ventricle (0.3 +/- 0.1 V vs ).4 +/- 0.23 V P=NS, respectively) and while Capsure Z showed a lower value at six months in ventricle (0.3 +/- V vs 0.4 +/- 0.23 V P=NS at 0.5 msec, 0.07 +/- 0.03 msec. vs 0.1 +/- 0.02 msec. P<0.02 at 1.6V, repectively). P and R wave sensing of CapSure Z was better thant that of CapSure SP at implant (P wave + 5 +/- 2.5 mV vs 3.80 +/- 1.95 m;R wave = 15.2 +/- 6.4 mV vs 13.13 +/- 5.5 mV, respecitively) and during the follow-up period achieving statistical significance at the 6 th mont oly for P wave (P wave = 3.33 +/- 1.6 mV vs 2.61 +/- 1.05 mV P<0.05; R wave = 13.9 +/- 5.17 vs 10.8 +/- 5.75 mV, P=NS). CapSure Z atrial and ventricular pacing impedance were double than that of CapSure SP one at implant (atrium: 1050 +/- 214 vs 491 +/- 51; ventricle: 1296 +/- 236 vs 481 +/- 81, p< 0.0001) and during the follow-up period (atrium: 1081 +/- 185vs553 +/- 60; ventricle 1186 +/- 256 vs 656+/- 68, P< 0.0001).


Subject(s)
Cardiac Pacing, Artificial , Electric Conductivity , Electrodes , Longevity , Pacemaker, Artificial
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