Understanding Nausea and Vomiting after Sedation Dentistry
Most people expect to feel drowsy or tired after a dental procedure they have had under sleep dentistry, but has anyone ever told you that there are chances you feel sick or nauseous after sedation?! That’s right; for some of our patients, nausea or vomiting after sedation dentistry may occur shortly after the treatment. We understand how uncomfortable and unsettling the feeling can be, and that’s why we decided to write this article. Keep reading to learn why nausea can happen after sedation dentistry Perth, what factors might make it more likely, and what you can do to manage it.
Factors Contributing to Nausea and Vomiting after Sedation Dentistry
Everyone reacts differently to sedation dentistry, and there’s actually no single reason why some people experience nausea and vomiting after sedation dentistry and others don’t. In the following section, you can see some common factors that can increase the risk of nausea after a sedation appointment.
Type of Sedation Used
The type of sedation you receive can affect how likely you are to feel sick afterwards. General anaesthesia, which puts you fully to sleep, has the highest chance of causing nausea. IV sedation, given through a vein, can also cause nausea in some people, depending on how their body reacts. Oral sedation (a pill you take before your appointment) has a lower risk, but it still affects people differently. Laughing gas (nitrous oxide) is the least likely to make you feel sick, and it wears off quickly once the treatment is done.
Use of Opioid Pain Relievers
Sometimes dentists may prescribe some strong pain relievers like opioids, which may slow down your digestion and affect parts of the brain that control nausea. This can make you feel sick and cause nausea.
Patient’s Medical History
A person’s medical history may also affect how their body reacts to sedation. For instance, if a person usually gets motion sickness or has felt nauseated after surgery before, they may be more likely to feel sick after dental sedation.
Fasting Before the Procedure
Your South Perth Dentist will ask their patients to avoid eating or drinking anything for several hours before their dental procedure under sedation to avoid complications during surgery and keep them safe. However, not eating or drinking for too long can make you feel weak, dizzy, or nauseous after the treatment.
Anxiety and Stress Levels
It is normal to feel nervous or anxious before a dental procedure, but being too stressed out can sometimes make your body more sensitive to sedation dentistry. This can increase the chance of feeling sick afterwards.
Age and Gender Factors
Women and younger people typically tend to feel nauseous after dental sedation more than others, and this may be due to the differences in hormones or how their body responds to medications.
Type and Duration of Dental Procedure
The longer and more involved your dental treatment is, the more sedation you may need and that can raise the risk of nausea. More complicated dental procedures may also put more stress on your body, which can add to that sick feeling afterwards.
Postoperative Pain
The pain and discomfort you experience after a dental procedure can affect how your whole body feels, and not just your mouth. Severe pain can sometimes trigger nausea.
Use of Specific Anaesthetic Agents
Some types of anaesthesia are more likely to cause nausea than others. Your dentist will choose the safest options for you after reviewing your full medical history and assessing your health.
Which Sedation Methods Are More Likely to Cause Nausea?
Different types of sedation carry different risks of nausea. Some sedation methods are more likely to cause side effects like nausea than other methods, and that usually depends on how your body responds to that specific type of sedation and also the level of sedation that is used for your procedure.
General Anaesthesia
General anaesthesia puts you into a deep sleep, and it’s usually used for more complex dental procedures. Because it affects the whole body and uses strong medications, it has the highest chance of causing nausea afterwards. Some people may also feel dizzy, tired, or unsteady when they wake up. The risk of nausea with general anaesthesia is higher, especially in people who’ve experienced it after surgery before.
IV Sedation
IV sedation doesn’t put you fully to sleep but into a dream-like state instead, and you may not remember much of the procedure. Some people feel fine after a dental procedure under intravenous sedation, while others may feel slightly nauseous, depending on how their body reacts to the medication. The risk of nausea or vomiting after IV sedation is lower than with general anaesthesia, but it can still happen.
Oral Sedation
If your dentist chooses oral sedatives for your treatment, you will need to take the pill before your procedure. Oral sedation helps you feel calm and drowsy during the procedure. The chances of feeling nauseous after oral sedation are lower compared to IV sedation and GA, but it may happen to some people, and it depends on the type of medication you use and how sensitive your stomach is.
Happy Gas
Side effects of happy gas are typically mild and short-lived because its effects will wear off quickly and once the dentist removes the mask from your nose. Nausea or vomiting are rare, but some people may experience them after their treatment. Most patients feel back to normal shortly after the procedure.
How to Reduce the Risk of Nausea and Vomiting after Sedation Dentistry
While some side effects after sedation can’t be fully avoided, there are simple steps you can take to lower the risk of feeling sick.
Follow Preoperative Fasting Guidelines: Do not eat or drink anything for at least 6 to 8 hours before your dental procedure under sedation, especially beverages that contain caffeine. This can help minimise the risk of nausea during and after sedation.
Discuss Your Medical History with Your Dentist: Make sure you inform your dentist if you have a history of motion sickness or if you felt nauseous after sedation in the past. Dentists will choose the best type of sedation for you when they have all the necessary information.
Consider Anti-Nausea Medications: Sometimes dentists may prescribe or recommend anti-nausea medications and ask the patients to take them before or after the procedure if they are convinced that you are prone to nausea. These medications help prevent or reduce the risk of nausea and vomiting after sedation dentistry.
Stay Hydrated Post-Procedure: After the procedure, start with small sips of clear fluids like water or broth. As you start to feel better, slowly drink more to help remove the sedatives and prevent nausea.
Ease Back into Eating: Once you’re fully awake and not feeling sick, start with soft, plain foods like toast, crackers, or applesauce. Avoid heavy, fatty, or spicy foods until your stomach feels better.
Rest and Avoid Sudden Movements: After a dental procedure under sedation, it’s better to rest and avoid engaging in heavy physical activities. Avoid sudden movements or heavy activities because they may increase the risk of dizziness, nausea, or vomiting.
What to Do If You Experience Nausea and Vomiting After Sedation Dentistry
Are you feeling nauseous after your dental treatment, which was under sedation dentistry? Follow these instructions:
Sip Clear Fluids Slowly
Start by drinking small amounts of water, ginger tea, or diluted electrolyte drinks. This can keep you from getting dehydrated and may calm your stomach without overwhelming it.
Avoid Solid Food Until the Nausea Passes
Avoid eating solid food right after your procedure and wait until you are feeling better. Eating too soon, especially heavy or greasy foods, can worsen nausea or increase the risk of vomiting.
Lie Down with Your Head Slightly Elevated
Keeping your upper body raised helps with nausea and dizziness, and avoid lying completely flat because it may make nausea worse.
Use Anti-Nausea Medication If Prescribed
If your dentist has prescribed any nausea medications, take them exactly as they told you. These can prevent vomiting and help you feel better faster.
Breathe Slowly and Deeply
Try to breathe deeply and slowly. When you’re feeling nauseous, breathing too quickly may make things worse. Slow, deep breathing, on the other hand, can help calm your body and reduce the feeling of nausea.
Avoid Strong Smells and Bright Lights
In some cases, very strong smells and bright lights may make nausea worse. After a procedure with sedation, try to stay in a quiet and low-light room to avoid triggering nausea or vomiting.
Call Your Dentist or Doctor If Nausea Persists or Worsens
If vomiting continues for more than 12–24 hours, or you’re unable to keep fluids down, contact a health professional. This could indicate a more serious reaction that needs medical attention.
Tailored Sedation Plans That Prioritise Your Comfort and Recovery
Feeling sick after sedation isn’t pleasant, but it can be managed with the right planning. At Perth Dental Sleep Clinic, we take the time to review your medical history, assess your risk factors, and choose a sedation method that suits you best. Every patient responds differently — that’s why we don’t take a one-size-fits-all approach. If you have concerns about nausea or past reactions to sedation, let’s talk it through. Call us on (08) 9474 5083.
