Complications of leadless vs conventional (lead) artificial pacemakers - a retrospective review

Background: Leadless pacemakers (LPM) are introduced in cardiovascular market with a goal to avoid lead- and pocket-associated complications due to conventional artificial pacemakers (CPM). The comparison of LPM and CPM complications is not well studied at a case by case level.

Methods: Comprehensive literature was searched on multiple databases performed from inception to December 2019 and revealed 204 cases that received LPM with a comparison of CPM. The data of complications were extracted, screened by independent authors and analyzed using IBM SPSS Statistics for Windows, Version 22.0 (Armonk, NY: IBM Corp.).

Results: The complications of CPM were high in comparison to LPM in terms of electrode dislodgement (56% vs 7% of cases, p-value < .0001), pocket site infection rate (16% vs 3.4%, p-value = 0.02), and a lead fracture rate (8% vs 0%, p-value = 0.04). LPMs had a statistically non-significant two-times high risk of pericardial effusion (8%) compared to CPMs (4%) with a p-value = 0.8.

Conclusion: LPMs appear to have a better safety profile than CPMs. There was a low pocket site and lead-related infections in LPM as compared to CPM. However, LPM can have twice the risk of pericardial effusion than CPMs, but this was not statistically significant.

Ethics committee develops supportive care guidelines

In response to widespread physician noncompliance with "do not resuscitate" (DNR) guidelines in 1983, the ethics committee at St. Joseph's Hospital, St. Paul, MN, set out to clarify the confusion over "supportive care only" (SCO) and DNR orders. A task force of nurses and physicians developed tentative supportive care guidelines and a subcommittee related ethical principles to the supportive care concept. The completed draft, "Principles and Guidelines in Deciding to Forego Life-Sustaining Treatment," was reviewed by the medical executive board and hospital attorney. St. Joseph's medical staff and board of trustees approved it in May 1985, and the document became hospital policy. The policy addresses patient autonomy, the burden/benefit principle, informed consent, and patient competency. It lists six guidelines for making supportive care plans. St. Joseph's has implemented the policy in several ways. Committee members make "ethics rounds" to discuss patient cases and the guidelines with hospital personnel. A brochure acquaints patients and their families as well as community groups with the guidelines. Nurses have introduced the guidelines to physicians in critical care units. When necessary, new insights will be incorporated into the guidelines.