What to do about thin blood? 9 ways to prevent blood loss during surgery

According to many medical statistics, excessive blood loss during surgery can increase the risk of complications, prolong recovery time, and directly affect treatment outcomes. In particular, individuals with thin blood, bleeding disorders, or those using anticoagulants often face a higher risk of bleeding when undergoing surgery.

If you are preparing for surgery and your doctor has warned you about having excessively thin blood, it is very important to learn how to properly clot blood. From adjusting your diet and lifestyle to managing medication use, each factor can contribute to supporting your body's natural blood clotting process.

In this article, Tiptory will guide you through methods to clot blood before surgery, and also help you understand important precautions to reduce the risk of bleeding and better prepare for treatment.

Part 1: What to eat and what to avoid before surgery for thin blood?

Method 1: Adjust your diet 1–2 weeks before surgery

Changes in diet cannot immediately alter blood coagulation. In fact, the body often needs several days to several weeks to adapt and respond to nutritional and lifestyle adjustments. Therefore, if you are preparing for surgery, you should start building an appropriate diet as early as possible to support the natural blood clotting process and reduce the risk of bleeding during surgery.

Discuss with your doctor before changing your diet

Before implementing any diet aimed at supporting blood clotting, consult your doctor or treating specialist.

• Provide full information about any medications, supplements, or herbs you are currently using.
• Strictly follow pre-operative dietary guidelines.
• Do not arbitrarily supplement or eliminate foods without professional advice.

Your doctor can make specific recommendations based on your health condition, type of surgery, and individual bleeding risk.

Limit certain foods that may affect blood clotting

In the pre-operative phase, your doctor may ask you to limit or temporarily stop consuming certain foods that can affect blood thickness or the anesthesia process.

Foods commonly recommended to limit include:

• Garlic
• Chili peppers
• Flaxseed
• Green tea
• Tomatoes
• Eggplant
• Potatoes

Avoiding these foods should be done strictly according to your doctor's instructions, as the degree of impact can vary from person to person.

Avoid allergenic foods before surgery

If you have a history of food allergies or your doctor has requested it, you should avoid foods that pose a risk of allergic reactions before surgery.

Some common allergenic foods include:

• Nuts
• Eggs
• Milk and dairy products
• Fish and seafood
• Wheat
• Soybeans

Controlling allergy risks well before surgery helps reduce unwanted complications and supports a smoother recovery process.

Method 2: Supplement enough vitamin K to support the blood clotting process

Vitamin K is an important nutrient that helps the body produce the necessary factors for the natural blood clotting process. When the body lacks vitamin K, the risk of prolonged bleeding can increase because the blood clots less easily than usual. Therefore, before surgery, maintaining a balanced and nutritious diet is essential.

To support blood clotting and maintain stable clotting function, you should supplement with vitamin K-rich foods such as:

• Dark green leafy vegetables like spinach, kale, collard greens, and broccoli.
• Lean meats in your daily diet.
• Milk and dairy products such as yogurt, cheese.

Maintain a diverse and balanced diet

Instead of focusing on just one type of food, build a diverse menu to ensure your body absorbs all the necessary nutrients.

• Eat enough green vegetables, protein, and healthy fats.
• Avoid skipping meals or excessive dieting before surgery.
• Drink enough water to support metabolism.
• Follow the nutritional guidelines provided by your doctor or healthcare professional.

Notes when supplementing vitamin K

If you are taking anticoagulants or have a blood clotting disorder, do not arbitrarily increase your vitamin K intake without consulting your doctor.

• Do not self-administer vitamin K pills.
• Maintain a stable daily intake of vitamin K according to professional guidance.
• Inform your doctor about all supplements you are taking before surgery.

Appropriate vitamin K supplementation not only helps support increased blood clotting ability but also contributes to better preparation for surgery and post-operative recovery.

Method 3: Stop drinking alcohol before surgery

Alcohol can affect your blood's ability to clot, increasing the risk of bleeding during and after surgery. Therefore, if you are preparing for an operation, you should minimize or completely stop consuming alcoholic beverages at least 1 week before the surgery date, as recommended by your doctor.

How can alcohol increase the risk of bleeding?

Alcoholic beverages can affect several mechanisms related to the blood clotting process, including:

• Reducing platelet aggregation.
• Affecting the activity of clotting factors.
• Increasing the risk of prolonged bleeding during surgery.
• Affecting liver function, an organ involved in producing many important clotting factors.

For individuals with thin blood or those using anticoagulants, these effects can become more severe.

Do not be complacent with small amounts of alcohol

Many people believe that a glass of wine or a small amount of alcohol will not have a significant effect. However:

• The impact of alcohol varies from person to person.
• People at risk of clotting disorders can experience complications even with low alcohol consumption.
• Some medications and anesthetic methods can interact with alcohol, increasing the risk of complications during surgery.

The safest option is to completely abstain from alcohol

To support increased blood clotting ability and reduce the risk of blood loss during surgery, you should:

1. Stop drinking alcohol at least 1 week before the surgery date or as directed by your doctor.
2. Inform your doctor about the frequency and amount of alcohol you usually consume.
3. Drink enough water and maintain a healthy diet during the pre-operative period.
4. Only resume alcohol consumption when your doctor has confirmed it is safe after surgery.

Temporarily stopping alcohol during this period is a simple step but can significantly contribute to the natural blood clotting process, reduce the risk of bleeding, and support better post-operative recovery.

Method 4: Drink enough water to maintain blood viscosity

Maintaining adequate hydration is a crucial factor in helping the circulatory system function effectively and supporting the natural blood clotting process. Before surgery, keeping the body in a state of water balance can help reduce the risk of issues related to blood circulation and overall health.

Dehydration can affect blood circulation

When the body does not receive enough water:

• The volume of circulating blood may decrease.
• Oxygen and nutrient transport processes are affected.
• The body easily falls into a state of fatigue, dizziness, or weakness.
• The ability to recover before and after surgery can be impacted.

Therefore, maintaining a regular drinking habit is an important part of surgical preparation.

Do not drink too much water

Many people think that the more water they drink, the better, but this is not entirely accurate.

• Excessive drinking can cause electrolyte imbalance in the body.
• Creates unnecessary pressure on the kidneys and circulatory system.
• Affects the body's fluid balance before surgery.

The most important goal is to maintain an adequately hydrated state rather than trying to drink a lot of water in a short period.

Maintain a reasonable amount of water daily

To support circulatory health and prepare well for surgery, you should:

1. Drink water regularly throughout the day.
2. Prioritize filtered water, milk, or other beverages allowed by your doctor.
3. Monitor urine color; light yellow is usually a sign that the body is relatively well-hydrated.
4. Increase water intake in hot weather or during strenuous activity.
5. Adhere to fasting and fluid restrictions before surgery as instructed by your doctor.

Reference water intake for adults

Under normal conditions, many experts recommend that adults drink about 2 liters of water per day, equivalent to about 8 glasses of water (250 ml/glass). However, actual needs may vary depending on:

• Age.
• Weight.
• Level of physical activity.
• Current health status.
• Specific instructions from the treating physician.

Maintaining adequate water intake daily is a simple but very useful habit for supporting blood clotting, protecting circulatory health, and helping the body be better prepared for surgery.

Method 5: Limit salicylate-containing foods before surgery

Salicylates are natural compounds found in many foods, spices, and herbs. In some cases, salicylates can affect the blood clotting process and reduce the body's ability to use vitamin K—a nutrient that plays a crucial role in the formation of clotting factors.

If you are preparing for surgery, your doctor may recommend that you limit salicylate-rich food sources to support natural blood clotting and reduce the risk of bleeding during the operation.

Discuss aspirin use with your doctor

Aspirin is a type of salicylate-based medication that can reduce platelet aggregation and prolong bleeding time.

• Many patients are asked to stop aspirin about 1 week before surgery.
• Do not stop medication on your own without a doctor's instruction.
• Fully inform your doctor about all medications you are taking before the surgery date.

Limit certain herbs and spices rich in salicylates

Many common household spices have a relatively high salicylate content.

Some examples include:

• Ginger.
• Cinnamon.
• Dill.
• Oregano.
• Turmeric.
• Licorice.
• Mint.

If your doctor asks you to control your salicylate intake, you should use these spices in reasonable amounts during the pre-operative period.

Notes on certain fruits

Some fruits also contain significant amounts of salicylates.

Commonly mentioned types include:

• Raisins.
• Cherries.
• Cranberries.
• Fresh grapes.
• Tangerines.
• Oranges.

Whether or not to limit them depends on your health condition, the type of surgery, and specific instructions from your treating physician.

Understand salicylates and vitamin K correctly

Not all salicylate-containing foods need to be completely eliminated. Some foods and spices contain both salicylates and provide vitamin K, so their effects may vary in each case.

For example:

• Curry powder.
• Cayenne pepper.
• Paprika powder.
• Thyme.
• Blueberries.
• Prunes.
• Strawberries.

Therefore, instead of designing an overly strict diet on your own, you should consult your doctor or a nutritionist for a suitable eating plan.

Prioritize a balanced diet before surgery

To support increased blood clotting ability and prepare well for surgery, follow these principles:

1. Follow nutritional guidelines from your doctor.
2. Maintain a stable vitamin K intake in your diet.
3. Limit foods or medications that may affect blood clotting when requested.
4. Do not use herbs or supplements on your own before surgery.

A reasonably controlled diet will help the body maintain normal blood clotting, while reducing the risk of bleeding-related complications during and after surgery.

Method 6: Control vitamin E intake before surgery

Vitamin E is an important nutrient for health, but excessive use during the pre-operative period can affect the blood clotting process. Some studies show that vitamin E can reduce the body's ability to use vitamin K, thereby impacting natural clotting mechanisms.

However, this does not mean you must completely eliminate vitamin E from your daily diet.

Avoid excessive vitamin E supplementation

When preparing for surgery, it is important to maintain vitamin E levels at a reasonable level.

You should:

• Do not take vitamin E pills on your own without your doctor's permission.
• Avoid starting new supplements containing vitamin E.
• Inform your doctor about all vitamins and supplements you are taking.

Controlling vitamin E intake helps support natural blood clotting and reduces the risk of bleeding during surgery.

Check personal care products you are using

Vitamin E is not only found in food but is also added to many skin care and personal hygiene products.

Some products that may contain vitamin E include:

• Hand sanitizer.
• Moisturizers.
• Hand creams.
• Skincare cosmetics.

If your doctor asks you to limit exposure to vitamin E before surgery, you might consider temporarily using products that do not contain this ingredient.

No need to remove vitamin E-rich foods from your diet

Many foods containing vitamin E also provide vitamin K and many other important nutrients. Therefore, in most cases, there is no need to completely avoid these foods.

For example:

• Spinach.
• Broccoli.
• Some other dark green leafy vegetables.

These foods can usually still be maintained in a balanced diet before surgery unless there are specific instructions from your doctor.

Prioritize a stable and scientific diet

To support increased blood clotting ability before the surgery date, follow these principles:

1. Maintain a diverse and balanced diet.
2. Do not overuse vitamin E supplements.
3. Follow pre-operative nutritional guidelines from your doctor.
4. Keep vitamin and mineral intake stable rather than making sudden dietary changes.

A reasonable diet will help the body maintain normal blood clotting function, and also create favorable conditions for the surgical process and subsequent recovery.

Method 7: Limit excessive omega-3 supplementation before surgery

Omega-3s are beneficial fatty acids for cardiovascular health and overall well-being. However, during the pre-operative period, consuming too much omega-3 can affect blood clotting, increasing the risk of bleeding in some individuals.

Therefore, if you are looking for ways to support blood clotting before surgery, you should pay particular attention to the amount of omega-3 in your diet and any supplements you are taking.

How can omega-3s affect blood clotting?

Omega-3s can affect platelet activity, thereby reducing the tendency for blood clots to form.

This can:

• Prolong bleeding time.
• Increase the risk of blood loss during surgery.
• Have a greater impact on individuals with thin blood or those taking anticoagulants.

For individuals with normal health, the amount of omega-3 from a balanced diet usually does not cause significant issues. However, excessive use should still be limited before surgery.

Consider reducing omega-3 rich fish

Some types of fish contain quite high levels of omega-3 and may be recommended by doctors to be temporarily restricted before surgery.

Commonly mentioned types of fish include:

• Salmon.
• Trout.
• Tuna.
• Anchovies.
• Mackerel.
• Herring.

Whether complete avoidance is necessary will depend on your health condition and your doctor's specific instructions.

Temporarily stop fish oil if advised by your doctor

Fish oil supplements typically contain a much higher concentration of omega-3 than natural foods.

Before surgery, you should:

• Inform your doctor if you are using fish oil or omega-3 supplements.
• Do not self-administer or stop the product without consultation.
• Adhere to the discontinuation period as professionally instructed.

This is one of the important precautions to help reduce the risk of bleeding during and after surgery.

Prioritize a stable nutritional regimen before surgery

To help increase blood clotting ability and prepare well for surgery, please:

1. Avoid overusing functional foods containing omega-3.
2. Maintain a balanced, diverse diet.
3. Fully inform your doctor about the vitamins, fish oil, and supplements you are using.
4. Follow pre-operative dietary instructions correctly.

Properly controlling omega-3 intake not only helps support natural blood clotting but also contributes to reducing the risk of complications and makes the surgical process safer.

Method 8: Be cautious with dietary supplements before surgery

Many people have a habit of using vitamins, herbs, or dietary supplements daily to improve health. However, not all products are safe during the pre-surgical period. Some ingredients can affect blood clotting ability, increase the risk of bleeding, or interact with anesthetics.

If you are preparing for surgery, you should review all the supplements you are taking and discuss them with your doctor for specific guidance.

Do not self-administer or continue dietary supplements

Before the day of surgery, inform your doctor about:

• Vitamins you are taking.
• Health-supporting dietary supplements.
• Herbs or traditional medicine.
• Products that boost immunity, bone and joint health, or cardiovascular health.

Even products advertised as natural or safe can affect the blood clotting process and cause unexpected complications during surgery.

Some dietary supplements often recommended to limit

Depending on the case, your doctor may ask you to temporarily stop using some products before surgery, such as:

• Ginkgo biloba.
• Coenzyme Q10 (CoQ10).
• St. John's wort.
• Fish oil.
• Glucosamine.
• Chondroitin.
• High-dose Vitamin C.
• Vitamin E.
• Garlic extract.
• Ginger extract.

The duration of discontinuation may vary depending on the type of product, health status, and type of surgery performed.

Why should these supplements be noted?

Some ingredients in dietary supplements can:

• Reduce platelet aggregation.
• Prolong clotting time.
• Increase the risk of bleeding during and after surgery.
• Interact with anesthetics or other medications.
• Affect blood pressure and heart rate during surgery.

This is why doctors often ask patients to fully disclose all supplements they are using before surgery.

How to use dietary supplements safely before surgery

To help increase blood clotting ability and reduce the risk of complications, you should:

1. Make a list of all dietary supplements you are using.
2. Bring this list to your pre-operative appointment.
3. Only continue using products approved by your doctor.
4. Do not arbitrarily take new vitamins or herbs during the surgical preparation period.
5. Strictly follow your treating doctor's instructions for stopping or continuing use.

Proper control of dietary supplements is an important step to help maintain normal blood clotting, reduce the risk of blood loss, and contribute to a safer surgical procedure.

Method 9: Adjust exercise intensity before surgery

Maintaining appropriate physical activity before surgery can help keep the body healthier, improve blood circulation, and support the recovery process after surgery. However, excessively strenuous exercises during this period can affect blood clotting and increase the risk of bleeding in some individuals.

Therefore, you should adjust your exercise intensity approximately 1 week before the day of surgery according to your doctor's instructions.

Avoid high-intensity physical activities

Overexertion or prolonged exercises can put extra stress on the body during surgical preparation.

Activities to limit include:

• High-intensity running.
• Heavy weightlifting.
• HIIT workouts.
• Competitive sports.
• Prolonged, exhausting training sessions.

Reducing exercise intensity allows the body time to recover and better prepare for surgery.

Do not stop exercising completely

In addition to avoiding overexertion, you should also not remain sedentary or inactive for extended periods.

A sedentary lifestyle can:

• Lead to less effective blood circulation.
• Increase the risk of blood clot formation.
• Cause a decrease in physical endurance before surgery.
• Affect the recovery process after surgery.

Therefore, maintaining light exercise is still a suitable option in most cases.

Prioritize gentle forms of exercise

To support circulatory health and maintain a stable body state before surgery, you can choose:

• Walking.
• Light jogging.
• Relaxing cycling.
• Gentle stretching exercises.
• Yoga or low-intensity activities if permitted by your doctor.

These forms of exercise help the body maintain physical fitness without putting excessive strain on the circulatory system.

Sample exercise schedule before surgery

You can maintain moderate activity such as:

1. Walking or light jogging for about 30 minutes per session.
2. Exercising 3–5 days per week.
3. Getting adequate rest after exercise.
4. Stopping exercise immediately if unusual fatigue, dizziness, or discomfort occurs.

Maintaining body balance is the most important thing

If you are looking for ways to support blood clotting before surgery, the goal is not to exercise too much or rest completely, but to maintain balance.

• Avoid overexertion.
• Do not let your body fall into a prolonged sedentary state.
• Combine a reasonable diet, rest, and exercise.
• Follow pre-operative instructions from your doctor.

An appropriate exercise regimen will help the body maintain normal blood clotting function, reduce the risk of complications, and lay a better foundation for the surgical process and subsequent recovery.

Part 2: Notes on medication and doctor's visit before surgery

Note 1: Discuss with your doctor before changing your lifestyle or taking medication

When preparing for surgery, any changes related to diet, medication, dietary supplements, or lifestyle should be discussed with your treating physician. This is a crucial step to help ensure that the blood clotting process proceeds normally and to minimize risks during surgery.

Each person has a different health condition, so there is no standard method that applies to all patients.

Fully disclose all medications you are currently taking

Before your pre-operative appointment, prepare a list of all medications and supplements you are taking.

The list should include:

• Prescription medications.
• Over-the-counter medications.
• Multivitamins.
• Dietary supplements.
• Herbs or traditional medicine.

Providing complete information helps the doctor accurately assess the risks associated with blood clotting and provide appropriate guidance.

Bring medications to your pre-operative appointment if necessary

In many cases, your doctor may ask you to bring the medications you are using to check their ingredients and dosage.

This helps to:

• Determine which medications need to be continued.
• Identify medications that may increase the risk of bleeding.
• Adjust dosages before the day of surgery.
• Minimize unwanted drug interactions.

You should not arbitrarily stop or change medication dosages without professional medical advice.

Understand blood viscosity correctly before surgery

Many people believe that it is only necessary to try to increase blood clotting as much as possible before surgery. In reality, maintaining balance is important.

If blood is too thin:

• Blood clots with difficulty when injured.
• The risk of prolonged bleeding increases significantly.
• There may be significant blood loss during surgery.

Conversely, if blood is too thick:

• The risk of blood clot formation increases.
• Blood clots can block blood vessels.
• Increases the risk of cardiovascular and circulatory complications.

Therefore, the goal is not to maximize blood thickness, but to maintain normal blood clotting ability as assessed by your doctor.

Adhere to a personalized surgical preparation plan

To safely support blood clotting before surgery, you should:

1. Consult your doctor before any health-related changes.
2. Fully disclose all medications and dietary supplements you are using.
3. Follow instructions regarding diet, exercise, and medication use.
4. Do not apply unverified folk remedies or anecdotal methods.

Close cooperation with your doctor is the most effective way to ensure your body is in the appropriate condition for surgery, reducing the risk of bleeding and complications related to blood clots.

Note 2: Discontinue blood-thinning medications and products as directed by your doctor

Some common over-the-counter medications and supplements can reduce blood clotting ability, thereby increasing the risk of bleeding during and after surgery. Therefore, before the day of surgery, your doctor will usually evaluate all the medications you are taking to decide which ones need to be temporarily stopped.

It is important not to arbitrarily continue or stop medication without professional medical advice.

Over-the-counter pain relievers that require special attention

Some common pain relievers and anti-inflammatory drugs can affect platelet activity and the natural blood clotting process.

Medications commonly considered by doctors before surgery include:

• Aspirin.
• Ibuprofen.
• Naproxen.
• Certain other non-steroidal anti-inflammatory drugs (NSAIDs).

These medications can increase the risk of bleeding if used close to the time of surgery.

Dietary supplements and herbs can also affect blood clotting

Many people believe that products of natural origin are completely safe. However, some herbs and supplements can affect blood clotting ability similar to blood thinners.

Commonly mentioned products include:

• High-dose Vitamin E.
• Garlic pills.
• Ginger pills.
• Ginkgo biloba.

Depending on the type of surgery and health condition, your doctor may ask you to stop using these products for a certain period before the day of surgery.

Do not arbitrarily replace or combine medications

If you are regularly taking pain relievers or dietary supplements:

1. Fully inform your doctor.
2. Do not switch to other types of medication without consultation.
3. Do not use new herbal products before surgery.
4. Strictly follow the medication discontinuation schedule instructed by your doctor.

Arbitrarily changing medications can increase the risk of complications or affect the treatment plan.

Prioritize safety over self-adjusting blood clotting

The goal before surgery is not to make the blood thicker to the maximum extent possible, but to maintain a normal blood clotting state suitable for each patient.

To achieve this, you should:

• Follow your surgeon's instructions.
• Fully disclose all medications and supplements you are taking.
• Avoid products that can thin the blood if requested.
• Do not apply unverified anecdotal remedies.

Proper preparation before surgery will help reduce the risk of bleeding, limit complications, and create favorable conditions for the recovery process after surgery.

Note 3: Temporarily discontinue anticoagulants as directed by your doctor

If you are taking prescribed anticoagulants, your doctor may ask you to temporarily stop the medication for a certain period before surgery. This is a common measure used to reduce the risk of excessive bleeding during surgery and support the body's blood clotting ability.

However, discontinuing anticoagulants must be done under strict medical supervision because these medications are often prescribed to prevent serious health problems such as stroke, myocardial infarction, or venous thromboembolism.

Do not arbitrarily stop anticoagulants

A common mistake is to stop medication as soon as you know you are having surgery. This can increase the risk of dangerous blood clot formation.

You should:

• Discuss with your surgeon and treating physician.
• Adhere strictly to the prescribed medication discontinuation time.
• Do not arbitrarily change dosages or medication schedules.
• Report immediately to your doctor if you forget to take medication or use it incorrectly.

The timing of medication discontinuation may vary for each individual

There is no single general timeframe that applies to all patients.

Your doctor will consider based on:

• The type of anticoagulant being used.
• The dosage of the medication.
• The type of surgery to be performed.
• Age and overall health status.
• Risk of bleeding and risk of thrombosis.

Therefore, you should not refer to medication discontinuation schedules from others or from unofficial sources.

Some anticoagulants commonly evaluated by doctors before surgery

Medications that may need to be considered for adjustment before the day of surgery include:

• Warfarin.
• Enoxaparin.
• Clopidogrel.
• Ticlopidine.
• Dipyridamole.
• Prescription Aspirin.
• Certain prescription non-steroidal anti-inflammatory drugs (NSAIDs).

Each type of medication has a different mechanism of action and elimination time, so the medication discontinuation plan will also vary.

Close monitoring during the surgical preparation phase

During the period of anticoagulant adjustment, your doctor may request:

1. Performing coagulation tests.
2. Regular blood count checks.
3. Monitoring for abnormal bleeding signs.
4. Assessing the risk of thrombosis before surgery.

This monitoring helps ensure that the body maintains a normal blood clotting state while limiting the risk of dangerous blood clots.

Prioritize safety over self-attempting to thicken blood

When preparing for surgery, the goal is not to thicken the blood to the maximum extent, but to bring the blood clotting ability to a level suitable for each patient.

To achieve this, you should:

• Strictly follow your doctor's instructions.
• Do not arbitrarily stop anticoagulants.
• Fully disclose all medications you are taking.
• Undergo all required pre-operative tests.

Close coordination with the medical team is the best way to reduce the risk of bleeding during surgery while preventing complications caused by blood clots.

Adhere to doctor's instructions when preparing for surgery

Any changes related to medication, diet, or lifestyle before surgery should be discussed with the treating physician. The doctor understands your medical history, the medications you are currently taking, and the risk factors that could affect the blood clotting process and surgical outcome.

Therefore, instead of trying to find ways to make blood clot or change your routine based on anecdotal advice, prioritize following professional guidance tailored to your health condition.

Communicate all changes fully before the surgery day

Before surgery, you should inform your doctor if you intend to:

• Change your diet.
• Supplement with vitamins or minerals.
• Use dietary supplements.
• Stop or change current medications.
• Adopt new health support methods.

This information helps the doctor accurately assess the risk of bleeding or thrombosis and develop an appropriate treatment plan.

Comply with fasting and drinking restrictions before surgery

One of the most important requirements before surgery is to fast and abstain from drinking as directed by your doctor.

Typically, many cases are required to:

• Avoid solid foods.
• Avoid water or other beverages.
• Avoid supplements.

During the prescribed period before surgery, usually about 8 hours or according to specific instructions from the medical facility.

This rule applies even to foods that are believed to be beneficial for increasing blood clotting ability.

Why is fasting necessary before surgery?

When under anesthesia, food or liquid remaining in the stomach can increase the risk of serious complications.

Some potential risks include:

• Gastric fluid reflux.
• Aspiration into the airway.
• Difficulties during anesthesia.
• Increased risk of respiratory complications.

If fasting instructions are not followed correctly, the surgery may be postponed to ensure patient safety.

Only use medications permitted by the doctor

Some medications may still be allowed before surgery, but this requires specific instructions from your doctor.

You should:

1. Clearly ask which medications can be continued.
2. Adhere strictly to the advised medication schedule.
3. Discontinue medications not approved by the doctor before surgery.
4. Do not self-medicate with additional drugs or supplements on the day of surgery.

Note that even medications not directly related to blood clotting can affect the anesthesia or surgical process.

Surgical safety is more important than self-regulating blood clotting

Preparing for a successful surgery not only depends on blood clotting ability but also involves many other factors such as medication, anesthesia, nutrition, and overall health status.

To reduce the risk of complications, please:

• Fully adhere to pre-operative instructions.
• Do not arbitrarily change medications or diet.
• Fast and abstain from drinking as prescribed.
• Inform your doctor of any health issues you are experiencing.

Proper preparation will help the surgical process proceed smoothly, while supporting the body to recover quickly and safely after surgery.

References

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Content edited by: Leigh Kennedy Ly.

Information consulted and verified by expert: Matthew Turner.