Tensile force of pacing lead extraction. A comparison between tined type and screw-in type.
Three months after implantation of endocardial pacing leads in 10 mongrel dogs, the tensile forces needed to remove 5 tined type and 5 screw-in type leads were compared experimentally. Mean maximum tensile force was 291 +/- 174 g with the screw-in type and 1174 +/- 369 g with the tined type (p < 0.01). Histopathologically, no changes suggesting any myocardial damage due to lead extraction were recognized in cases where screw-in type leads were used. These results support the clinical feasibility of safe and easy manual retraction of infected pacing leads of the screw-in type.
Division of Cardiology, Shinkyo Hospital, Kagoshima, Japan.
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S
Amitani
H
H
Sohara
M
M
Kurose
K
K
Miyahara
K
K
Misumi
H
H
Sakamoto
D000818:Animals; D004285:Dogs; D004567:Electrodes, Implanted / Q000592:standards*; D004867:Equipment Design; D004869:Equipment Safety; D005240:Feasibility Studies; D009206:Myocardium / Q000473:pathology; D010138:Pacemaker, Artificial / Q000145:classification / Q000592:standards*; D013718:Tensile Strength