What is a brachial plexus block?

A brachial plexus block is a shot of numbing medicine around the group of nerves between your spine and your shoulder. The shot usually goes into your neck or just above your collarbone. Sometimes it goes into the armpit.

This kind of nerve block may be used for some procedures on the shoulder, arm, or hand. It numbs the area during the procedure and can help control pain afterward.

How is a brachial plexus block done?

Before a brachial plexus block, you may get medicine to keep you relaxed and comfortable. The doctor may use ultrasound to help guide the nerve block needle.

After finding the right spot, the doctor uses a tiny needle to numb the skin where you will get the nerve block. Then he or she puts the special nerve block needle into the numbed area. You may feel some pressure. But you should not feel pain.

What can you expect after a brachial plexus block?

The shot will leave your arm partly or totally numb for a while. Your doctor will tell you how long. Follow your doctor's instructions carefully.

You will need someone to drive you home.

As the block wears off, you will start to feel some pain from the surgery. Be sure to take your pain medicines before the pain gets bad.

Problems from a nerve block are rare. There is a small risk of problems like seizures, heart problems, damage to nerves, infection, or bleeding. The benefits usually outweigh these risks.