Expedited Pacemaker Placement for Intermittent Complete Heart Block Following Subdural Hematoma

Indications for Urgent Pacemaker Placement

The American College of Cardiology/American Heart Association guidelines list complete heart block with symptomatic bradycardia as a Class I indication for permanent pacemaker implantation, with a strength of evidence based on expert consensus and clinical experience 1, 2
In patients with intermittent complete heart block, symptoms such as syncope must be presumed to be due to the heart block unless proven otherwise, with a moderate level of evidence from observational studies 3
Documented intermittent complete heart block on outpatient monitoring provides clear evidence of the arrhythmic cause of syncope, with a high level of evidence from diagnostic studies 4

Syncope with documented intermittent complete heart block establishes a clear cause-effect relationship, with a high level of evidence from observational studies 2, 5
Significant cerebrovascular disease that might result in a stroke or further injury if cerebral perfusion were to suddenly decrease is a specific consideration for pacemaker timing, with a moderate level of evidence from expert consensus 5

The American College of Cardiology/American Heart Association guidelines specifically list complete heart block with symptomatic bradycardia as a Class I indication for permanent pacemaker implantation, with a strength of evidence based on expert consensus and clinical experience 1, 4
Patients with complete heart block and syncope have improved survival with permanent pacing, with a moderate level of evidence from observational studies 3

Outpatient management would be inappropriate given the documented life-threatening arrhythmia and recent serious injury, with a high level of evidence from observational studies 2