How Long Should You Wait Between Two General Anesthesias? - Anesthesiology

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How long should be the interval between two anesthetics?


Hello, Doctor Guan: I would like to ask how long should the interval be between two general anesthesia procedures? I underwent a surgery with general anesthesia on July 20, and I am scheduled for another surgery with general anesthesia on August 9.
I have read that anesthetics are metabolized quickly, and I do not smoke or drink.
Is this interval acceptable? Thank you.

Miss Wang, 30~39 year old female. Ask Date: 2021/08/04

Dr. Guan Siqi reply Anesthesiology


General endotracheal anesthesia is primarily administered through an endotracheal tube that delivers anesthetic gases.
These gases are not easily absorbed by the body and are metabolized quickly, so generally, there is no need to consider interval issues, and there is no cause for concern.
Director Kuan Sih-Chi, Department of Anesthesiology, Nantou Hospital.

Reply Date: 2021/08/04

More Info


When it comes to the interval between two general anesthesias, there are several factors to consider, including the type of surgery, the patient's overall health, and the specific anesthetic agents used. In your case, you had a general anesthesia on July 20 and are scheduled for another on August 9, which gives you a gap of about 20 days.
Generally speaking, the metabolism of anesthetic agents is relatively quick, and most of them are eliminated from the body within a few hours to a few days. For example, inhaled anesthetics are typically cleared from the body within a few hours after the end of surgery, while intravenous anesthetics may take a bit longer but are still usually eliminated within a day or two. However, the concern is not just about the clearance of the anesthetic agents but also about the recovery of the body and any potential cumulative effects of anesthesia.

In most cases, a gap of 20 days between two general anesthesias is considered safe, especially if you are in good health and do not have any underlying conditions that could complicate anesthesia. The fact that you do not smoke or drink alcohol is also a positive factor, as these habits can affect how your body metabolizes drugs, including anesthetics.

It is important to note that individual responses to anesthesia can vary widely. Some patients may experience lingering effects from the first anesthesia, such as fatigue or cognitive changes, which could impact their recovery and readiness for subsequent procedures. Additionally, the type of surgery you are undergoing and any associated risks should be discussed with your anesthesiologist and surgeon. They will take into account your medical history, the nature of the surgeries, and any other relevant factors to determine the best approach for your care.

In summary, while the metabolism of anesthetics is generally rapid, the interval between two general anesthesias should also consider the patient's overall health and the specific circumstances surrounding each procedure. A 20-day interval is typically acceptable, but it is always best to consult with your healthcare providers to ensure that you are fully prepared for your upcoming surgery and to address any concerns you may have. They can provide personalized advice based on your medical history and the details of your surgeries.

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