Comment on 'Leadless Pacemakers: Current Achievements and Future Perspectives'.

The transvenous pacemaker consists of a small generator implanted subcutaneously that is connected to electrical leads that fix to the cardiac chambers. The generator contains a battery, circuitry and capacitors; the leads contain conduction coils with layers of insulation. Electrical impulses from the generator travel via the leads to stimulate the heart; although the system is effective, up to 9.5% of patients develop complications often related to the lead(s) or the subcutaneous pocket housing the generator.2 Most of these complications are pocket haematomas or lead displacements, issues that create inconvenience but can be corrected with minimum risk.