Microvascular occlusion, also known as endovascular coil embolization, uses a metal coil to fill the aneurysm. This prevents bleeding and rupture. It may also be used if the aneurysm has already ruptured.
Endovascular coil embolization prevents a
brain aneurysm from causing more damage. It will not fix damaged areas of the brain, but it can improve quality of life by stopping bleeding.
An aneurysm is a weakened blood vessel in the brain that collects blood. The bulging, blood-filled pocket can put pressure on parts of the brain, pressing on nearby nerves. This can cause symptoms or cause the blood vessel to rupture (hemorrhage).
Copyright © Nucleus Medical Media, Inc.
Problems may occur from the procedure. Your doctor will review potential problems, like: Head acheWeaknessNumbness or tinglingSpeech disturbancesVisual changesConfusion, memory lossInfectionAdverse reaction to anesthesiaKidney damageBlood clotsRuptured aneurysm during surgery
Factors that may increase the risk of complications include: SmokingObesityHigh blood pressure
Discuss these risks with your doctor before the surgery.
Your appointment before the surgery may include: Physical exam and blood testsImaging tests—ultrasound,
MRI scan, or angiogramDiscussion of allergiesDiscussion of medications you are taking, including over-the-counter and herbal supplementsDiscussion of recent illness or other conditionsDiscussion of risks and benefits of treatment options
Before your procedure: Arrange for a ride home.Avoid food or drink after midnight the night before the procedure.Discuss your medications with your doctor. You may be asked to stop taking certain medications before your procedure.
Women should let their doctor know if they are pregnant or planning to become pregnant.
is usually be used. It will block any pain.
You may be given medications to relax you
You will be connected to monitors to watch your blood pressure, heart rate, and pulse during the procedure.
An IV will be placed in your arm for sedation and anesthesia.
An incision is made in the groin/inner thigh and a thin, hollow tube or sheath is inserted into the artery wall. A catheter is put in and guided by a wire through the artery and up towards the brain. Computer-aided X-rays will direct the catheter to the aneurysm and a dye is put in to define the aneurysm. A smaller catheter with a platinum coils are advanced to the aneurysm. The coils are used to fill and block the aneurysm.
The catheter is removed and the incision is closed.
When the procedure is done, you will need to lie still for 6-8 hours or more. You will stay in the ICU, often for a day. Your blood pressure and other vitals will be monitored closely. You will be given medication for pain or other symptoms.
Anesthesia will prevent pain during surgery. Pain and discomfort after the procedure can be managed with medications.
This complex procedure is done in a hospital setting. The usual length of stay is 1-2 days. Your doctor may choose to keep you longer if complications arise.
You will rest for several hours in the ICU.Nurses will monitor your vital signs.
During your stay, the hospital staff will take steps to reduce your chance of infection, such as: Washing their handsWearing gloves or masksKeeping your incisions covered.
There are also steps you can take to reduce your chance of infection, such as: Washing your hands often and reminding your healthcare providers to do the sameReminding your healthcare providers to wear gloves or masksNot allowing others to touch your incision
When you get home, you may have to adjust your activity level while you recover. This may take 3-6 weeks. Home care may include: Resting when you need toCaring for the woundPhysical or rehabilitative therapy
Contact your doctor if your recovery is not progressing as expected or you develop complications such as: Any changes in physical ability, such as balance, strength, or movementAny changes to mental status, such as consciousness, memory, or thinkingWeakness, numbness, tinglingSigns of infection including fever and chillsRedness, swelling, increasing pain, bleeding, or discharge from the incision siteHeadacheChanges in visionFaintingPain that cannot be controlled with the medications you've been givenPersistent nausea or vomitingTrouble controlling your bladder and/or bowelsPain, swelling, or cramping in your legs
Call for emergency medical services right away if any of the following occurs: SeizureShortness of breath or chest painLoss of consciousness
If you think you have an emergency, call for medical help right away.
Cerebral aneurysm. American Association of Neurological Surgeons website. Available at:
http://www.aans.org/en/Patient%20Information/Conditions%20and%20Treatments/Cerebral%20Aneurysm.aspx. Updated March 2015. Accessed May 10, 2016.
Cowen J, Ziewacz J, Dimick J, et al. Use of endovascular coil embolization and surgical clip occlusion for cerebral artery aneurysms.
J Neurosurg. 2007;107:530-535.
Subarachnoid hemorrhage.EBSCO DynaMed website. Available at: http://www.ebscohost.com/dynamed. Updated December 31, 2015. Accessed May 10, 2016.
Treatment of brain aneurysms. The Aneurysm and AVM Foundation website. Available at:
http://www.taafonline.org/ba_treatment.html#ba_clipping. Accessed May 10, 2016.
Williams LN, Brown RD Jr. Management of unruptured aneurysms. Neurol Clin Pract. 2013;3(2):99-108.
Last reviewed June 2016 by Michael Woods, MD
Please be aware that this information is provided to supplement the care provided by your physician. It is neither intended nor implied to be a substitute for professional medical advice. CALL YOUR HEALTHCARE PROVIDER IMMEDIATELY IF YOU THINK YOU MAY HAVE A MEDICAL EMERGENCY. Always seek the advice of your physician or other qualified health provider prior to starting any new treatment or with any questions you may have regarding a medical condition.
Copyright © EBSCO Publishing. All rights reserved.