Delayed Facial Palsy After Microvascular Decompression for Hemifacial Spasm

Area of Science:

• Neurosurgery
• Neurology

Background:

• Hemifacial spasm is a condition characterized by involuntary contractions of facial muscles.
• Microvascular decompression (MVD) is a surgical procedure to treat hemifacial spasm by relieving pressure on the facial nerve.
• Delayed facial palsy (DFP) is a potential complication following MVD.

Purpose of the Study:

• To investigate the causes, treatment, and outcomes of delayed facial palsy (DFP) after microvascular decompression (MVD) for hemifacial spasm.
• To determine the incidence and risk factors associated with DFP post-MVD.

Main Methods:

• Retrospective study of 562 patients who underwent MVD for hemifacial spasm between January 2012 and January 2014.
• Analysis of patient data to identify cases of DFP and associated factors.

Main Results:

• 34 out of 562 patients (6% incidence) developed DFP after MVD.
• The duration of DFP ranged from 15 to 136 days, with an average of 51.2 days.
• Preoperative duration of hemifacial spasm and facial nerve indentation were statistically relevant to DFP incidence.

Conclusions:

• DFP is an observable complication after MVD for hemifacial spasm.
• Symptoms of DFP show significant improvement, suggesting a favorable prognosis for affected patients.