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  • Your doctor may recommend a craniotomy or craniectomy

  • procedure to treat a number of different brain

  • diseases, injuries, or conditions.

  • Your skull is made of bone, and serves

  • as a hard, protective covering for your brain.

  • Just inside your skull, three layers of tissue

  • called meninges surround your brain.

  • The thick, outermost layer is the dura mater.

  • The middle tissue layer is the arachnoid mater,

  • and the innermost layer is the pia mater.

  • Between the arachnoid mater and the pia mater

  • is the subarachnoid space, which contains

  • blood vessels and a clear fluid called cerebrospinal fluid.

  • Blood vessels, called bridging veins,

  • connect the surface of your brain with the dura mater.

  • Other blood vessels, called cerebral arteries,

  • bring blood to your brain.

  • Inside your skull, normal brain function

  • requires a delicate balance of pressure

  • between the blood in your blood vessels,

  • the cerebrospinal fluid that surrounds your brain,

  • and your brain tissue.

  • This is called normal intracranial pressure.

  • Increased intracranial pressure may

  • result from brain tumors, head injuries,

  • problems with your blood vessels,

  • or infections in your brain or spinal cord.

  • These conditions put pressure on your brain,

  • and may cause it to swell or change

  • shape inside your skull, which can lead to serious brain injury.

  • Your doctor may recommend a craniotomy

  • to remove abnormal brain tissue such as a brain

  • tumor, a sample of tissue by biopsy,

  • a blood clot called a hematoma, excess cerebrospinal fluid,

  • or pus from an infection called an abscess.

  • A craniotomy may also be done to relieve brain swelling;

  • stop bleeding, called a hemorrhage;

  • repair abnormal blood vessels; repair skull fractures;

  • or repair damaged meninges.

  • Finally, a craniotomy may also be

  • done to treat brain conditions such as epilepsy,

  • deliver medication to your brain,

  • or implant a medical device such as a deep brain stimulator.

  • The most common reason for a craniotomy

  • is to remove a brain tumor.

  • Before your procedure, you will be given general anesthesia

  • to make you unconscious and pain-free.

  • The skin on your scalp will be shaved

  • over the location of the tumor.

  • To begin, your surgeon will make an incision in your scalp.

  • One or more small holes will be made in your skull.

  • Then, your surgeon will connect the holes

  • to create a circular piece of bone called a bone flap,

  • and remove it.

  • Your surgeon will make an incision in the dura mater

  • to expose your brain.

  • Then your tumor will be removed.

  • The incision in the dura mater will be closed with sutures.

  • Your surgeon will reattach the bone flap with metal plates

  • and screws that will remain in your skull for life.

  • You may have a variation on a craniotomy called

  • a craniectomy, if your brain is very swollen

  • or your skull is infected.

  • Your surgeon may delay reattaching the bone flap

  • until a later procedure, to allow time for the swelling

  • to go down.

  • At the end of either a craniotomy or a craniectomy,

  • your scalp incision will be closed with staples,

  • and your head will be wrapped in bandages.

  • If you had a craniectomy, you will have another procedure

  • called a cranioplasty at a later date,

  • after the swelling goes down.

  • At that time, your surgeon will reattach your bone flap

  • with metal plates and screws, then

  • close the skin incision with staples.

  • After either procedure, you will stay

  • in the hospital for several days.

  • Your caregiver will check your brain function

  • by asking you questions, and shining a light in your eyes.

  • You may be given medication to prevent complications.

Your doctor may recommend a craniotomy or craniectomy

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B2 中上級

開頭手術と開頭手術 (Craniotomy and Craniectomy)

  • 155 15
    wshuang999 に公開 2021 年 01 月 14 日
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