PMID: 1207345Nov 17, 1975Paper

Clinical indications for pacemaker exchange and functional studies of the explanted aggregates (author's transl)

Langenbecks Archiv für Chirurgie
J Rivas-MartinL Seipel

Abstract

For the purpose of examining the clinical exchange indication 96 removed Demand-pacemakers (type Medtronic 5842, 5843, 5942, 5943) had been sujected to a functional test by the manufacturers. After a service-life from 31-45 months 71% (i.e. 42 out of 59 units) and, in the group with a service-life from 31-35 months, 66% (i.e. 33 out of 51 units) of pacemaker units removed at that time were still working regularly. The mean energy loss exceeded 70% with a simultaneous mean drop of the output voltage down to 2.5 Volts. After the 25th month of the implantation date the number of battery failure increased spasmodically. Under the suspicion diagnosis of "battery exhaustion" a prophylactic "selective" exchange operation of the pace-maker units implied does not appear justifiable to us but in cases with stable AV-Block III. Providing reliable supervision of patients with sufficient self-rhythm, the exchange may be delayed up to about the 40th month after the implantation.

References

May 24, 1974·Deutsche medizinische Wochenschrift·S Effert, W Irnich
Jul 20, 1974·British Medical Journal·E SowtonP Roy
Nov 23, 1973·Deutsche medizinische Wochenschrift·K A Rosenkranz, M Schaldach
Dec 7, 1973·Deutsche medizinische Wochenschrift·P DoeneckeL Bette
Feb 1, 1974·Journal of Electrocardiology·D Friedberg, R C Lillehei
May 15, 1970·Deutsche medizinische Wochenschrift·W Irnich, S Effert

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