bifascicular block & trifascicular block

Diagnostic procedures

• electrocardiogram
  • right bundle branch conduction disturbance combined with anterior left fascicular block or posterior left fascicular block
  • may be associated with 1st degree AV block (trifascicular block)
  • electrocardiogram may show bifid QRS complex

Complications

• complete heart block

Management

• observation if asymptomatic
• pacemaker if complete heart block

More general terms

• left bundle branch hemiblock