Key Points
The National Inpatient Survey (NIS) corroborates left bundle branch block (LBBB) is associated with less pacemaker implantation than right bundle branch block (RBBB).
Rates of inpatient pacemaker implantations have trended lower over time, possibly due to improvement of patient selection, implant technique and perhaps due to early discharge protocols.
Care should be exercised when inferring the rates of pacemaker implantation from an inpatient only database when patients have been known to develop late heart block and sometimes require readmission.