RT-98
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Implantation of the passive fixation endocardial atrial lead in patients after CABG
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Michal Chudzik, Jerzy Krysztof Wranics, Janusz Zrobek, Karol Bartczak, Janusz Kawinski.
Department of Cardiology, Institute of Cardiology, Medical Academy, Lodz, Poland
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Abstract
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The use of the J-shaped atrial passive fixation
lead is often difficult if the atrial appendage has been surgically removed (for example
after open heart surgery).
The aim of the study was to compare duration of the atrial passive lead fixation,
complication rates and electrical properties in patients without and after open heart
surgery.
The study population consisted of 38 patients (pts) Gr I-18 pts – after CABG, and Gr II-20
pts (as control group) without cardiopulmonary bypass procedure. Atrial passive fixation
endocardial lead Biotronik SYNOX SX 53-JBP was implanted in both groups. Duration of
the lead fixation, displacement of leads and electrical properties: pacing threshold,
P-wave amplitude, were measured at implant and 3-months follow-up.
Duration of the lead fixation was similar in the two groups, one lead dislodgment was
observed in both groups. There was no statistically significant difference in pacing
threshold at implant (Gr I-0.42±0.22 V vs Gr II-0.38±0.24 V) and 3-months follow-up – (Gr
I-0.78±0.34 V vs Gr II-0.73±0.3 V), and in P wave amplitude at implant – (Gr I-2.4±0.68 mV
vs Gr II-2.62±0.75 mV) and after 3 months – (Gr I-2.25±0.46 mV vs Gr II-2.64±0.54 mV).
We concluded that1) implantation of the atrial passive fixation lead SYNOX SX 53-JBP in
patients with surgically appendage removal is safe procedure with low complication
rates and does not lengthen duration of lead fixation; 2) passive fixation atrial lead SX
53-JBP provides low acute and chronic pacing threshold with stable P wave amplitude
in both groups.
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Key Words
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