Sometimes we feel a little scared before going into an operation, that is, a surgery, right? One of the biggest fears for some is, "What if I suddenly regain consciousness while under anesthesia?" Although this is actually a very rare occurrence, it is very important for you and me to be aware of this. Let's talk about this in more detail today.
What is Anesthesia Awareness?
Simply put, Anesthesia Awareness is the process of being completely unconscious during a surgery, that is, under general anesthesia , and then briefly regaining consciousness. But this is not the same as just 'waking up'. It is a slightly different experience. It can feel different for different people. Think about it this way:
- It may feel like you can hear the sounds of people talking around you and the sounds of equipment in the operating room.
- It can be like seeing a dream, like being in a dream world.
- You may suddenly wake up and find yourself unable to move or speak. This can be a frightening experience.
- Sometimes the body feels pressure, and very rarely, there is a small chance of feeling pain.
The most important thing is that this state of `(Anesthesia Awareness)` occurs only in surgeries performed under `(General Anesthesia)`. This does not happen in other anesthesia methods, that is, `(Local Anesthesia)` which numbs your hands and feet, `(IV Sedation)` which makes you feel a little drunk, or `(Twilight Sleep)` methods. Because, `(General Anesthesia)` is when even things that happen automatically in your body, such as breathing, are controlled by machines. In other methods, you have a certain level of consciousness, you can breathe on your own, and you can even talk to the medical team if necessary.
How far is this possible?
Now you might be thinking, "Wow, does this happen to a lot of people?" No, not at all. In fact, this type of anesthesia awareness is very, very rare. It's hard to give exact statistics. Because some people may not remember exactly what happened until a week or two after surgery. Others may have this experience right away, but they may not tell their doctors about it.
But according to several studies, this kind of experience occurs in only 1 or 2 out of 1,000 surgeries (less than 0.2%) . So you get the idea, right? It's really very rare.
Why is this happening? What are the reasons?
It has been found that there are three main reasons why this anesthesia awareness may occur:
1. Insufficient drug administration: This is when the anesthesiologist does not administer enough anesthetic. This often happens during emergency surgeries. For example, emergency heart surgeries, Cesarean sections , or surgeries performed quickly after serious accidents. In times like these, there may be less time to carefully monitor the level of anesthesia because the patient needs to act quickly to save their life.
2. Different anesthetic requirements: This is when the anesthesiologist prescribes the standard amount of medication, but the person requires a different amount. Not everyone's body is the same. This is more likely to happen in people who are severely anxious ( very afraid before the operation), those who have substance use disorders, and those who have previously experienced anesthesia awareness.
3. Anesthesia machine malfunction: This can happen if the anesthesia machines in the operating room malfunction, or if the medical staff does not properly check the equipment before the surgery. However, this is also a very rare occurrence , as hospitals take great care in maintaining this equipment.
Who is most at risk?
Although this risk is generally low for everyone, some people may be at slightly higher risk of developing anesthesia awareness. This is due to factors such as:
- If you are a smoker .
- If you have more than one chronic medical condition (multiple medical conditions) (e.g. diabetes, high blood pressure).
- If you have breathing problems (e.g. respiratory diseases such as asthma, lung disease).
- If you have a history of substance use disorder (SUD) before .
Also, this risk may be slightly higher than others in some special surgeries where it is not safe to use general anesthesia. For example:
- Cesarean sections (C-sections): The level of anesthesia is carefully controlled to ensure the safety of both the mother and the baby.
- Heart surgery: These are complex surgeries.
- Emergency surgery to treat trauma or blood loss: This is because saving the patient's life is the priority here.
Do you feel pain during anesthesia awareness?
This is a question that many people are afraid of. But the good news is that it is very rare to feel pain during anesthesia awareness. However, it is important to remember that it is not impossible. While most people remember things like hearing sounds around them and hearing conversations, some may remember a sore throat from the intubation tube or pain at the incision sites .
Could this have long-term effects?
Not everyone who experiences anesthesia awareness will experience long-term effects. However, in severe cases, meaning if the experience is very frightening, some people may develop these mental states:
- Anxiety
- Depression
- Sleep problems such as frequent nightmares (Nightmare disorder)
- Post-Traumatic Stress Disorder (PTSD) : This is a mental condition that occurs after a severe traumatic event.
People with these complications may have a lingering sense of helplessness. As a result, they may even avoid medical appointments. This increases their risk of developing other health problems. If you have ever had this experience, seeking help from a psychologist or psychiatrist can provide you with great relief and improve your quality of life.
Can doctors detect this? During surgery?
While doctors can tell if you are anesthetized, or sedated , it is not always possible to tell for sure whether you are fully conscious, or unconscious .
Anesthesiologists will continuously monitor your vital signs – such as blood pressure , breathing rate , and pupil size – to determine your level of sedation. But measuring consciousness is a bit more complicated. Because the drugs used for general anesthesia affect your autonomic nervous system (which controls everything that happens in your body), you won't be able to move or speak. So, it's not as easy to measure consciousness as it is to measure the level of anesthesia.
However, with advanced technology, there are special devices that can measure the electrical activity in your brain during surgery and help get an idea of your level of consciousness.
First, the doctor may take an electroencephalogram (EEG) of your brain. For this test, several small sensors are attached to the skin of your head. These sensors pick up electrical signals from your brain. The results of these EEGs are combined with other monitoring methods to make a diagnosis. Some of these methods include:
- Bispectral Index™ monitoring (BIS): Research shows that this is one of the most reliable tools for measuring how well you are sedated. It records your EEG readings and gives you a number between zero and 100. The lower the number, the deeper the anesthesia . The goal for general anesthesia is to keep this number between 40 and 60.
- Auditory Evoked Potentials (AEP) monitor: This device records and analyzes the electrical activity in your brainstem and cerebral cortex . The doctor puts headphones in your ears and plays certain sounds . The device then analyzes your brain's response and gives you a number from zero to one hundred. Here, too, the lower the number, the deeper the anesthesia.
- Narcotrend®: Like the BIS, the Narcotrend uses your EEG results to estimate the depth of anesthesia. It rates your results on a scale of six letters (A through F) and a number (zero through one hundred). Results can range from "awake" to "electrical silence" (meaning very little brain activity).
How do doctors diagnose this after surgery?
The best way to find out if you have had an anesthesia awareness experience is for your doctor to ask you questions about it after your surgery. A standard method used for this is the Brice Interview . It asks a few short questions like these:
- "What is the last thing you remember before the surgery started?"
- "What is the first thing you remember after the surgery?"
- "Do you remember anything during the surgery?"
- "Did you have any dreams during the surgery?"
Doctors can get an idea based on your answers to these questions.
Is there anything we can do to prevent anesthesia awareness?
Yes, if you are concerned about this Anesthesia Awareness, be sure to talk to your anesthesia care provider about it. They will explain to you what steps you can take to reduce the risk of this happening. There are also things you can do:
- Tell your doctor about all the medications you take (both those prescribed by your doctor and those you buy over the counter), and any supplements (such as vitamins and Ayurvedic medicines).
- Discuss your complete medical history (previous illnesses, surgeries, allergies, etc.) with your doctor in detail.
- Ask them about any questions or doubts you have. Don't be shy.
- Most importantly: If you have ever experienced anesthesia awareness before, be sure to tell your doctor.
- Avoid known risk factors ( e.g. smoking) as much as possible.
Remember, anesthesia awareness is not something you did wrong. It happens sometimes, and experts are still researching the reasons for this.
What if I have anesthesia awareness?
Imagine that you have had such an experience. As soon as you know about it, tell your doctor (healthcare provider) or nurse about it. Tell them all the details you remember (what you heard, what you felt). The doctor can then record the event in your medical records, and if you have to have anesthesia again in the future, take special care and take steps to reduce the risk of awareness.
What is the future of those who have experienced anesthesia awareness?
It really depends on the circumstances and the severity of the effects. For example, someone who remembers part of a story during surgery may not have any troublesome side effects. However, someone who feels pain or is acutely aware of their surroundings may experience more severe, long-term psychological complications .
However, most patients who have experienced anesthesia awareness can safely receive anesthesia again in the future. The risk of it happening again is very low. Doctors are more careful because they know about the previous experience.
If you have experienced something like this, talk openly with your doctor about how it is affecting your daily life. They can refer you to a psychologist or psychiatrist , who can conduct the necessary tests and provide appropriate advice and treatment.
The idea of waking up during surgery is so terrifying that there have even been several movies made about it. Although anesthesia awareness is a rare occurrence, the fear of it is common among many people, and it's something we all have in our minds. The long-term psychological effects of it shouldn't be underestimated. And it's also not a good idea to let that fear keep you from having the surgery you need. Anesthesiologists use advanced monitoring tools to prevent this from happening. And scientists are continuing to research why it happens to some people and not others. If you've had this experience—or if you're worried that it might—talk to your anesthesiologist. They can help put your mind at ease.
What are the most important things we want to take home from this story?
Okay, so here are some things to keep in mind from what we've talked about:
- Anesthesia Awareness is a very rare occurrence. Don't be unnecessarily afraid of it.
- Before you have surgery , be sure to discuss your complete medical history, the medications you are taking, and any fears or concerns you may have with your anesthesiologist.
- If you've had this experience before, definitely tell me. Don't hide it.
- While you are under anesthesia, doctors use special equipment to monitor your condition.
- If you ever have an experience like this, and it has a psychological impact, don't hesitate to seek psychiatric advice. It will help you a lot.
- Don't put off getting the medical care or surgery you need because of this fear. Your medical team is very concerned about your safety.
So, I hope this information is useful to you. Stay healthy!
` Anesthesia, anesthesia awareness, surgery, surgery, recovery, operation, anesthesiologist
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