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. 2011 Apr;32(8):991-8.
doi: 10.1093/eurheartj/ehq497. Epub 2011 Jan 20.

Infection after pacemaker implantation: infection rates and risk factors associated with infection in a population-based cohort study of 46299 consecutive patients

Jens Brock Johansen  1 , Ole Dan Jørgensen, Mogens Møller, Per Arnsbo, Peter Thomas Mortensen, Jens Cosedis Nielsen
Affiliations

Infection after pacemaker implantation: infection rates and risk factors associated with infection in a population-based cohort study of 46299 consecutive patients

Jens Brock Johansen et al. Eur Heart J. 2011 Apr.

Abstract

Aims: Infection is a serious complication of pacemaker (PM) systems. Although the rate of infection has been debated, the figures are largely unknown. We therefore studied the incidence of PM infection and its associated risk factors in the Danish population.

Methods and results: Since 1982, all PM implantation and removal procedures performed in Denmark have been prospectively recorded in the Danish Pacemaker Register. All patients (n = 46299) who underwent implantation between 1982 and 2007 were included. The total length of surveillance was 236,888 PM-years. The incidence of infection was calculated according to the total number of PM-years. The incidence of surgical site infection (≤ 365 days after PM implantation) was compared with later infection in first implant and replacement procedures. Multiple-record and multiple-event-per-subject proportional hazards analyses were used to identify the independent risk factors of PM infection. Surgical site infection occurred in 192 cases after first implantation (incidence rate 4.82/1000 PM-years), and in 133 cases after replacement (12.12/1000 PM-years). Infections occurring more than 365 days after the first implantation occurred in 153 cases (1.02/1000 PM-years), and in 118 cases after replacement (3.26/1000 PM-years). Independent factors associated with an increased risk of PM infection were a greater number of PM operations (including replacements), male sex, younger age, implantation during the earliest part of the study period, and absence of antibiotics (P< 0.001).

Conclusion: The overall risk of infection after PM implantation was low. A greater number of operations augmented the risk of infection. This should be taken into account when considering revisions of PM systems.

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Figures

Figure 1
Figure 1
Kaplan–Meier plot of the time to infection after first pacemaker implantation (n= 44631) and after pacemaker replacements (n= 8380).
See this image and copyright information in PMC

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