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Anaesthesia for Foot Surgery

At some point before your surgery, your consultant and Anaesthetist will raise the issue of anesthesia. Many people will jokingly say, "Just put me out, Doc, and wake me when it's over." But the selection of anesthesia is a major decision that could have a significant impact on your recovery. It deserves careful consideration and discussion with your surgeon and your Anaesthetist.

Several factors must be considered when selecting anesthesia, including:

Types of Anesthesia

There are three broad categories of anesthesia: general, regional, and local.

Local Anesthesia

You are probably familiar with local anesthesia. This is the kind of anesthesia your dentist uses when repairing your teeth. Local anesthesia numbs only the specific area being treated.

General Anesthesia

Most joint replacements use use either general or regional anesthesia. General anesthesia affects your entire body. It acts on the brain and nervous system, leaving you in a deep sleep. Usually, it is given by injection or inhalation.

There are several types of general anesthetics which your Anaesthetist will discuss with you.

Regional Anesthesia

Regional anesthesia involves numbing a specific area of the body, without affecting your brain or breathing. Because you remain conscious, you will be given sedatives to relax you and put you in a light sleep.

The two types of regional anesthesia used most frequently in joint replacement surgery are spinal blocks and epidural blocks. In a spinal block, the anesthesia is injected into the fluid surrounding the spinal cord in the lower part of your back. This produces a rapid numbing effect that can last for hours, depending on the drug used. An epidural block uses a small tube (catheter) inserted in your lower back to deliver large quantities of local anesthetics over a longer time period. The epidural block and the spinal block are administered in a very similar location; however, the epidural catheter is placed slightly closer to the skin and farther from the spinal cord.

There are several advantages to using a regional anesthesia during joint replacement surgery. Studies have shown that there is less blood loss during the surgery, and fewer complications from blood clotting afterwards.

Side effects from regional anesthesia include headaches, trouble urinating, and allergic reactions, which could be quite serious.

Risks

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