General anesthesia is a combination of medications that put you in a sleep-like state before a surgery or other medical procedure. Under general anesthesia, you don't feel pain because you're completely unconscious. General anesthesia usually uses a combination of intravenous drugs and inhaled gasses (anesthetics).

    General anesthesia is more than just being asleep, though it will likely feel that way to you. But the anesthetized brain doesn't respond to pain signals or reflexes.

    An anesthesiologist is a specially trained doctor who specializes in anesthesia. While you're under anesthesia, the anesthesiologist monitors your body's vital functions and manages your breathing.

    In many hospitals, an anesthesiologist and a certified registered nurse anesthetist (CRNA) work together during your procedure.

    Why it's done

    Your anesthesiologist or nurse anesthetist, along with your doctor, will recommend the best anesthesia option for you based on the type of surgery you are having, your overall health and your individual preferences. For certain procedures, your team may recommend general anesthesia. These include procedures that may:

    • Take a long time
    • Result in significant blood loss
    • Expose you to a cold environment
    • Affect your breathing (particularly chest or upper abdominal surgery)

    Other forms of anesthesia, such as light sedation combined with local anesthesia (for a small area) or regional anesthesia (for a larger part of your body), may not be appropriate for more involved procedures.


    General anesthesia is overall very safe; most people, even those with significant health conditions, are able to undergo general anesthesia itself without serious problems.

    In fact, your risk of complications is more closely related to the type of procedure you're undergoing and your general physical health, rather than to the type of anesthesia.

    Older adults, or those with serious medical problems, particularly those undergoing more extensive procedures, may be at increased risk of postoperative confusion, pneumonia, or even stroke and heart attack. Specific conditions that can increase your risk of complications during surgery include:

    • Smoking
    • Seizures
    • Obstructive sleep apnea
    • Obesity
    • High blood pressure
    • Diabetes
    • Stroke
    • Other medical conditions involving your heart, lungs or kidneys
    • Medications, such as aspirin, that can increase bleeding
    • History of heavy alcohol use
    • Drug allergies
    • History of adverse reactions to anesthesia

    These risks are more generally related to the surgery itself rather than the anesthesia.

    Anesthesia awareness

    Estimates vary, but about 1 or 2 people in every 1,000 may be partially awake during general anesthesia and experience what is called unintended intraoperative awareness. It is even rarer to experience pain, but this can occur as well.

    Because of the muscle relaxants given before surgery, people are unable to move or speak to let doctors know that they are awake or experiencing pain. For some patients, this may cause long-term psychological problems, similar to post-traumatic stress disorder.

    This phenomenon is so rare that it's difficult to make clear connections. Some factors that may be involved include:

    • Emergency surgery
    • Cesarean delivery
    • Depression
    • Use of certain medications
    • Heart or lung problems
    • Daily alcohol use
    • Lower anesthesia doses than are necessary used during procedure
    • Errors by the anesthesiologist, such as not monitoring the patient or not measuring the amount of anesthesia in the patient's system throughout the procedure

    How you prepare

    General anesthesia relaxes the muscles in your digestive tract and airway that keep food and acid from passing from your stomach into your lungs. Always follow your doctor's instructions about avoiding food and drink before surgery.

    Fasting is usually necessary starting about six hours before your surgery. You may be able to drink clear fluids until a few hours prior.

    Your doctor may tell you to take some of your regular medications with a small sip of water during your fasting time. Discuss your medications with your doctor.

    You may need to avoid some medications, such as aspirin and some other over-the-counter blood thinners, for at least a week before your procedure. These medications may cause complications during surgery.

    Some vitamins and herbal remedies, such as ginseng, garlic, Ginkgo biloba, St. John's wort, kava and others, may cause complications during surgery. Discuss the types of dietary supplements you take with your doctor before your surgery.

    If you have diabetes, talk with your doctor about any changes to your medications during the fasting period. Usually you won't take oral diabetes medication the morning of your surgery. If you take insulin, your doctor may recommend a reduced dose.

    If you have sleep apnea, discuss your condition with your doctor. The anesthesiologist or anesthetist will need to carefully monitor your breathing during and after your surgery.

    What you can expect

    Before the procedure

    Before you undergo general anesthesia, your anesthesiologist will talk with you and may ask questions about:

    • Your health history
    • Your prescription medications, over-the-counter medications and herbal supplements
    • Allergies
    • Your past experiences with anesthesia

    This will help your anesthesiologist choose the medications that will be the safest for you.

    During the procedure

    Your anesthesiologist usually delivers the anesthesia medications through an intravenous line in your arm. Sometimes you may be given a gas that you breathe from a mask. Children may prefer to go to sleep with a mask.

    Once you're asleep, the anesthesiologist may insert a tube into your mouth and down your windpipe. The tube ensures that you get enough oxygen and protects your lungs from blood or other fluids, such as stomach fluids. You'll be given muscle relaxants before doctors insert the tube to relax the muscles in your windpipe.

    Your doctor may use other options, such as a laryngeal airway mask, to help manage your breathing during surgery.

    Someone from the anesthesia care team monitors you continuously while you sleep. He or she will adjust your medications, breathing, temperature, fluids and blood pressure as needed. Any issues that occur during the surgery are corrected with additional medications, fluids and, sometimes, blood transfusions.

    After the procedure

    When the surgery is complete, the anesthesiologist reverses the medications to wake you up. You'll slowly wake either in the operating room or the recovery room. You'll probably feel groggy and a little confused when you first wake. You may experience common side effects such as:

    • Nausea
    • Vomiting
    • Dry mouth
    • Sore throat
    • Muscle aches
    • Itching
    • Shivering
    • Sleepiness
    • Mild hoarseness

    You may also experience other side effects after you awaken from anesthesia, such as pain. Your anesthesia care team will ask you about your pain and other side effects. Side effects depend on your individual condition and the type of surgery. Your doctor may give you medications after your procedure to reduce pain and nausea.

    From Mayo Clinic to your inbox

    Sign up for free, and stay up to date on research advancements, health tips and current health topics, like COVID-19, plus expertise on managing health.

    To provide you with the most relevant and helpful information, and understand which information is beneficial, we may combine your email and website usage information with other information we have about you. If you are a Mayo Clinic patient, this could include protected health information. If we combine this information with your protected health information, we will treat all of that information as protected health information and will only use or disclose that information as set forth in our notice of privacy practices. You may opt-out of email communications at any time by clicking on the unsubscribe link in the e-mail.

    Clinical trials

    Explore Mayo Clinic studies of tests and procedures to help prevent, detect, treat or manage conditions.

    Dec. 18, 2020

    What does an anesthesiologist do before a surgery?
    Before surgery, the anesthesiologist will evaluate your medical condition and formulate an anesthetic plan that takes your physical condition into account. more
    Why is anesthesiologist highest paid?
    Anesthesiologists make a lot of money because they are in high demand and the profession requires a long and expensive education. The future looks bright for anesthesiologists, as the demand for their services is expected to grow in the coming years. more
    Can anesthesiologist make millions?
    No. But there are a few Anesthesiologists earning over a million per year. Of course, Chronic Pain docs can get close to 7 figures. Average salary Is more likely low 400s but I have seen Peds Anesthesiologists in certain areas earn high 6 figures; 7 figures after a year or two is not out of the realm of possibility. more
    What is below an anesthesiologist?
    Other than the potential supervision required for CRNAs, the process of putting a patient under anesthesia is the same for both nurse anesthetists and anesthesiologists. Smaller medical offices are more likely to have nurse anesthetists. Larger hospitals typically employ both anesthesiologists and CRNAs. more
    Can anesthesiologist be doctors?
    Anesthesiologists are medical doctors, which means they must spend four years in undergraduate studies, four years in medical school, and three to four years in a residency program. Some anesthesiologists may also choose to go on to complete specialty fellowships. more
    Does an anesthesiologist stay during surgery?
    During surgery. If you have general anesthesia, the anesthesiologist will stay with you during the whole surgery. They'll check your breathing, heart rate, blood pressure, and other vital signs, and will adjust your anesthesia level if needed. more
    Is becoming an anesthesiologist hard?
    How Hard Is It to Become an Anesthesiologist? As with all medical professions, becoming an anesthesiologist is a rigorous process. Prospective anesthesiologists must hone their science, math, and critical thinking skills through medical school, clinical rotations and residencies. more
    Is being an anesthesiologist boring?
    When you have surgery, do you care who administers your anesthetic? You should. An oft-repeated medical adage states:“anesthesia is 99% boredom and 1% panic. As an anesthesiologist who's delivered over 50,000 hours of operating room care over 25 years, I can attest that the adage is true. more
    Is anesthesiologist a stressful job?
    Introduction. Anesthesiology is certainly one of the most stressful medical disciplines, daily exposing physicians to high responsibilities and stressful situations such as the management of life-threatening scenarios. more
    What title does an anesthesiologist have?
    In the United States of America, anesthesiologists are doctors (M.D. or D.O.) who have chosen to specialize in anesthesiology. more
    What questions does anesthesiologist ask before surgery?
    Questions to Ask About Anesthesia
    • What type of anesthesia do you use at your clinic?
    • Based on my health history and medication list, which type is best for me?
    • What are the side effects?
    • How will you be monitoring me while I am under anesthesia?
    • When will the anesthesia wear off?
    • What risks should I be aware of?

    Source: www.mayoclinic.org

    You may be interested in...

    Should I put celery in my beef stew?

    Can you run with a Bernese Mountain Dog?

    Who ran a 3.9 40-yard dash?

    What are the challenges of students in modular learning?

    Who are the 7 angels of Allah?

    What is a zero cost loan?

    What are the components of the information system?

    What is the most comforting word?

    What you should invest in right now?

    How can I burn 500 calories a day without exercise?

    Can you reverse liver damage from alcohol?

    Do you sleep a lot with lymphoma?

    Does the Mediterranean have winter?

    Is gambling Bitcoin legal?

    Where did Shidded and Farded come from?

    About Privacy Contact
    ©2022 REPOKIT