Throughout historical processes, various methods have been developed to prevent the pain that led patients to avoid surgical interventions, making operation processes more controlled with the introduction of general anesthesia. Today, general anesthesia can be used in many different surgical procedures at the discretion of the anesthesiologist. Topics such as how general anesthesia is eliminated from the body, side effects after general anesthesia, and general anesthesia allergies are important aspects of the procedure and are assessed based on the patient's overall health condition.
What is General Anesthesia?
General anesthesia can be defined as a state of complete sleep induced by medications administered intravenously or by the inhalation of anesthetic gases. This state of sleep allows the necessary operation to be performed, eliminating the sense of pain and movement. The patient, who is put to sleep during the painful surgical procedure, is monitored and treated by the anesthesiologist throughout the procedure and is awakened after general anesthesia.
How is the Decision for General Anesthesia Made?
Unlike local anesthesia, the decision to use the general anesthesia method, during which the patient's consciousness is completely closed, is made by the anesthesiologist considering the patient's overall condition and preferences. After the decision for surgery is made, the patient is necessarily evaluated by an anesthesiologist before the operation.
Before deciding on anesthesia, the patient is examined, necessary test samples are taken, and a consultation with the anesthesiologist is provided. After this process, the patient's anesthesia risk is determined, and the patient is informed about potential risks. If deemed necessary, consultations regarding the patient's comorbidities are requested from the relevant specialty.
How is General Anesthesia Administered?
The patient who is determined by the anesthesiologist to undergo general anesthesia is taken to the operating room. The necessary devices to monitor the patient's vital functions during surgery are connected. The patient is put to sleep with the help of medication administered intravenously. After the patient is asleep, a tube is placed in the trachea to ensure breathing during the sleep state. The patient's state of sleep is maintained until the end of the procedure under the anesthesiologist's supervision.
After the operation, the administration of anesthetic gases is stopped. Oxygen is provided to the patient via the tube until they wake up. The tube in the patient's trachea is removed by the anesthesiologist once the patient regains consciousness and adequate breathing.
Who Should Not Undergo General Anesthesia?
The American Society of Anesthesiologists has defined patient risk levels using scores known as the ASA classification. Within this classification, if the patient falls within a high-risk group and general anesthesia is decided upon, the anesthesiologist identifies potential problems and, after obtaining required consultations for the patient, takes necessary precautions to reduce risks in line with recommendations from the relevant specialty.
The number of patients unsuitable for general anesthesia is quite low. Therefore, while it cannot be said that general anesthesia is unsuitable for a specific group of patients, the decision is made by the anesthesiologist.
What is the Process After General Anesthesia?
Once the operation is successfully completed, the process of awakening and recovery begins for the patient. Post-general anesthesia, patients are usually kept in a recovery room under the supervision of anesthesiologists for a short period. During this process, the patient's breathing, heart rate, blood pressure, and consciousness are regularly monitored. When breathing becomes adequate and the patient begins to respond to their surroundings, the breathing tube inserted in the throat is removed.
The effects of general anesthesia can vary from person to person. Symptoms such as drowsiness, dizziness, and nausea in the first hours after waking are considered normal. These effects typically resolve quickly, but in some individuals, they may last longer. The full recovery process post-anesthesia may vary depending on the type of operation and the patient's overall health status.
How is General Anesthesia Eliminated from the Body?
The drugs and gases used during general anesthesia are metabolized and expelled by the body over time. While a significant portion of the anesthetic gases is exhaled through the respiratory system, medications administered intravenously are eliminated through the liver and kidneys. The speed of this process depends on the patient's age, weight, overall health status, and organ functions.
To support the body's elimination of anesthetic substances, it is recommended to drink plenty of water, take light walks, and perform regular breathing exercises. In patients with inadequate kidney and liver functions, this elimination process may take longer. The anesthesiologist closely monitors this process according to the patient's condition.
Side Effects After General Anesthesia
As with any medical procedure, some side effects may occur after general anesthesia. While side effects are usually temporary and mild, more serious conditions may rarely arise. Common side effects after general anesthesia include:
- Nausea and vomiting
- Throat irritation or pain
- Drowsiness and dizziness
- Muscle pain
- Memory confusion or transient cognitive impairment
More serious complications can include allergic reactions, respiratory issues, low blood pressure, or heart rhythm disturbances. For this reason, patients are closely monitored for several hours post-operation.
What is General Anesthesia Allergy?
In some patients, rare allergic reactions might occur to the anesthetic agents used. This condition is referred to as "general anesthesia allergy." Such reactions can range from mild itching to severe respiratory problems or life-threatening anaphylaxis.
A detailed anesthesia evaluation is essential for patients at risk for allergies before the operation. Prior anesthesia experiences, reactions to drugs used, family history, and allergy history are reviewed. In risky situations, special precautions are taken to minimize the risk of allergy.
Frequently Asked Questions
How soon can one return to normal life after waking up from general anesthesia?
The recovery process after general anesthesia varies depending on the operation and the patient's health condition. In minor and short operations, the patient may be discharged within a few hours, whereas, for larger surgeries, they may be kept under observation in the hospital for several days. Mild drowsiness, fatigue, and focus problems are normal in the initial days.
What can be done to minimize the risks associated with general anesthesia?
The anesthesiologist tries to identify possible risks in advance by evaluating the patient's entire medical history. Factors such as medications used, chronic diseases, allergies, and smoking-alcohol use are critical in anesthesia planning. Additionally, pre-operative tests and consultations from relevant specialties when necessary help reduce these risks.
Is memory loss experienced after general anesthesia?
In some patients, especially elderly individuals, temporary memory problems may occur after general anesthesia. This situation usually resolves within a few days. However, some studies suggest that very long or repeated general anesthesia may negatively affect cognitive functions in older age. Therefore, the decision for surgery in risky patients should be made through multidisciplinary evaluation.
Can general anesthesia be administered to pregnant women?
If a mandatory surgical intervention is required during pregnancy, general anesthesia can be administered carefully. The priority is always the safety of the mother and baby. It is advised to avoid general anesthesia during the first trimester of pregnancy, as organ development in the baby continues during this period. The second trimester is considered the safest period for mandatory operations. The anesthesiologist and obstetrician collectively decide to minimize risk.
