Microvascular Decompression of the Facial Nerve
What is Microvascular Decompression of the Facial Nerve?
Microvascular decompression (MVD) of the facial nerve is a neurosurgical procedure used to treat hemifacial spasm, a condition that causes involuntary twitching or contractions of the muscles on one side of the face. The procedure relieves pressure on the facial nerve caused by a nearby blood vessel.
MVD aims to address the underlying cause of facial nerve irritation, often providing long-term relief from facial spasms while preserving normal facial nerve function. It is considered one of the most effective long-term treatments for hemifacial spasm.
When is Microvascular Decompression of the Facial Nerve Indicated?
Microvascular decompression of the facial nerve is typically indicated for patients with hemifacial spasm caused by compression of the facial nerve by a blood vessel. It is recommended when facial twitching is persistent, progressive, or significantly affects daily activities and quality of life. The procedure may also be considered when medications or botulinum toxin (Botox) injections provide inadequate relief, cause side effects, or require frequent repeat treatments.
How Should I Prepare for Microvascular Decompression of the Facial Nerve?
- Discuss the procedure, risks, benefits, and expected outcomes with your surgical team.
- Sign consent form.
- Attend all preoperative appointments and imaging studies.
- Inform your doctor about medications, allergies, and medical conditions.
- Stop certain medications, such as blood thinners, supplements, and fish oil.
- Follow fasting instructions carefully.
- Arrange transportation and support for recovery.
What Happens During Microvascular Decompression of the Facial Nerve?
During microvascular decompression of the facial nerve, the patient is placed under general anaesthesia. The surgeon makes a small incision behind the ear and creates a small opening in the skull to access the facial nerve near the brainstem. Using a microscope, the surgeon identifies the blood vessel compressing the nerve and carefully moves it away. A tiny cushion, usually made of Teflon, is placed between the vessel and the nerve to prevent further contact. The incision is then closed and covered with a soft adhesive dressing.
What Happens After Microvascular Decompression of the Facial Nerve?
After microvascular decompression of the facial nerve, patients are closely monitored in the recovery area and may spend a short time in the intensive care unit. Most remain in the hospital for two to five days. Facial spasms often improve immediately, though some patients experience gradual improvement over several weeks or months. Temporary headaches, dizziness, nausea, balance issues, or incision discomfort may occur. Follow-up appointments are scheduled to assess healing, symptom relief, and recovery progress.
What are the Risks and Benefits of Microvascular Decompression of the Facial Nerve?
Risks and benefits of microvascular decompression of the facial nerve include the following:
Benefits:
- Addresses the underlying cause of facial nerve compression.
- Provides long-term or permanent relief from facial spasms in many patients.
- Preserves facial nerve function without intentionally damaging the nerve.
- Can significantly improve quality of life and daily functioning.
Risks:
- Post operative haematoma
- Infection (wound, CSF, urine, chest)
- Adverse reactions to anaesthesia.
- Hearing loss, dizziness, or balance problems.
- Facial weakness or numbness.
- Cerebrospinal fluid (CSF) leak.
- Stroke, nerve injury, or recurrence of symptoms, although these complications are uncommon
- Complications related to other medical conditions (heart, lungs, kidney)
- Clots in legs (Deep venous thrombosis) and clots in lungs (pulmonary embolus)
- Non resolution of facial spasms
Note: Your surgeon will advise you on how likely the above complications are.
What can I expect when I am discharged from hospital
- You may experience pain (including headache), inflammation, and discomfort in the operated area. Pain and anti-inflammatory medications are provided as needed.
- Keep the surgical site clean. Instructions on surgical site care and bathing will be provided.
- Refrain from smoking and alcohol until your first follow up visit as it can negatively affect the healing process.
- Refrain from lifting anything heavier than 5 Kg and other strenuous activities until the first follow-up visit. These activities may include housework, yard work, gardening, mowing, etc.
- Gentle exercise and regular walking are recommended to improve strength and endurance from 2 weeks after surgery.
- Refrain from driving until you are fully fit and receive your surgeon’s clearance.
- Most patients can return to their normal daily routines in 4-6 weeks after surgery.
