Chicago Health | Homepage
What you should know about anesthesia

What you should know about anesthesia

Harvard Health Letters

If you’ve ever had a tooth filled without Novocaine, you know the difference anesthesia can make. Anesthesia–whether it numbs your mouth or puts you into a full sleep–is designed to keep you comfortable during a procedure that otherwise might be hard to tolerate physically, emotionally, or both.

“We have four goals: to see that you have no pain, that you’re drowsy or unconscious, that your body is still so that the surgeon can work on it, and that you aren’t left with bad memories of the procedure,” says Dr. Kristin Schreiber, an anesthesiologist at Harvard-affiliated Brigham and Women’s Hospital, Boston, Mass.

There are four basic kinds of anesthesia–local, which is typically administered to numb a small area; regional, which numbs a larger area, like your hand, arm, or foot; neuraxial (spinal or epidural), which is injected near the spine and numbs the lower half of your body; and general, which works in the brain to render you completely unconscious and unable to sense pain. The type used depends upon the procedure you’re having, your state of health, and, often, your preferences.

1. Local anesthesia

Unless you’ve made it through life without having your wisdom teeth extracted or an injury that required stitches, you’ve probably had local anesthesia. Local anesthetics are injected near the area to be treated, and their effects are limited to a fairly small area. They are usually administered by a professional–a nurse, dentist, or doctor–who will make sure the area is numb.

Administering local anesthesia actually does not require specialized training. Although you won’t feel pain with a local, you may feel pressure. If you find that disturbing, you can be given a sedative to ease your anxiety.


2. Regional anesthesia

In regional anesthesia, local anesthetics are injected near clusters of nerves to numb a larger area, or region, of the body. A classic example is hand surgery, where a shot of numbing medicine near the nerves in the armpit makes the whole arm go numb for three to 24 hours, depending on the type of anesthesia used.


3. Neuraxial anesthesia

Neuraxial anesthesia includes epidurals and spinals. Numbing medicine is placed near the spinal roots, making an even larger part of the body numb than regional anesthesia does. Epidurals are commonly given to ease the pain of labor and childbirth or the pain accompanying a large abdominal incision. Spinals, which block sensation to the abdomen and lower body, are frequently used for cesarean section and knee surgery.

With both regional and neuraxial anesthesia, you may be able to choose how conscious you’ll be during the procedure. With minimal sedation, you’ll be relaxed but aware of what’s going on. Moderate sedation will send you into a “twilight sleep,” in which you’ll drift in and out of consciousness but can be easily aroused. With deep sedation, you’re essentially fast asleep and unlikely to remember anything.


4. General anesthesia

Anesthesiologists use a combination of intravenous drugs that render you unconscious and unable to feel pain. You’re also often given a drug to relax your muscles so that your body is still during the surgery. The anesthesiologist often inserts a tube in your trachea to allow him or her to help you breathe.

Because general anesthesia affects so many body systems, it’s associated with more side effects than regional anesthesia, including nausea and delirium, although these can be minimized.

“The effects of general anesthesia last longer in older people. It may take longer to restore memory, and they may have more delirium,” Dr. Schreiber says.

If you’re having a procedure that requires regional, neuraxial, or general anesthesia, you might have a preoperative evaluation with an anesthesiologist, nurse, or physician assistant a few days before your surgery. It’s important to let this person know about all the drugs you take.

You’ll also be asked whether you have had an unfavorable reaction to anesthesia before and whether you have ever been dependent on opioids, alcohol, or other substances. This information will help determine the type of the anesthesia you receive. For many procedures, you should be able to choose between regional, neuraxial and general anesthesia, Dr. Schreiber says.

In some cases, the best choice may be a combination. For example, even when general anesthesia is necessary, a regional block or epidural may also be given to help with postoperative pain, reducing the need for narcotic painkillers as you heal. Adding regional or neuraxial anesthesia also reduces the amount of general anesthesia you need and, consequently, side effects like delirium, nausea, and delayed bladder and bowel function. – Harvard Women’s Health Watch

(C) 2015. PRESIDENT AND FELLOWS OF HARVARD COLLGE. ALL RIGHTS RESERVED DISTRIBUTED BY TRIBUNE CONTENT AGENCY, LLC.

Similar Articles

Unexplained belly pain? Consider nerve irritation

Unexplained belly pain? Consider nerve irritation

The Medicine Cabinet: Ask the Harvard Experts By Howard LeWine, M.D. Q: I have had persistent pain

Finding Relief for Chronic Migraines

Finding Relief for Chronic Migraines

By Mary Beth Klatt Marie Syzdek, 54, grew up thinking that migraines were a normal part

The Science of Sciatica Pain

The Science of Sciatica Pain

By Laura Drucker A few years ago, I suffered from a herniated disc. The pain in

New gene shown to cause Parkinson’s disease

New gene shown to cause Parkinson’s disease

Source: Northwestern University Northwestern Medicine scientists have discovered a new cause of Parkinson's disease: mutations in

Are you too young to have a stroke?

Are you too young to have a stroke?

Source: Cleveland Clinic Brain & Spine Team If you're a young or middle-aged adult, you may

Articles By Category

Family Health

In The Know

CH Lifestyle

May 2017
Sunday Monday Tuesday Wednesday Thursday Friday Saturday
April 30, 2017 May 1, 2017 May 2, 2017 May 3, 2017 May 4, 2017 May 5, 2017 May 6, 2017
May 7, 2017 May 8, 2017 May 9, 2017 May 10, 2017 May 11, 2017 May 12, 2017 May 13, 2017
May 14, 2017 May 15, 2017 May 16, 2017 May 17, 2017 May 18, 2017 May 19, 2017 May 20, 2017
May 21, 2017 May 22, 2017 May 23, 2017 May 24, 2017 May 25, 2017 May 26, 2017 May 27, 2017
May 28, 2017 May 29, 2017 May 30, 2017 May 31, 2017 June 1, 2017 June 2, 2017 June 3, 2017

Categories

Recent Comments

Fund a Cure Night | The Griffith Family Foundation

Fund a Cure Night | The Griffith Family Foundation

Enjoy a great night of baseball at Peoples Natural

VIEW ARTICLE
Swing for the fences in the fight to Sideline Pancreatic Cancer

Swing for the fences in the fight to Sideline Pancreatic Cancer

Enjoy a great night of baseball at Peoples Natural

VIEW ARTICLE

Archives