Types of Surgery Involved
Caffeine is a stimulant that increases heart rate and blood pressure. For this reason, patients are advised to avoid caffeine for several hours before certain types of surgery. These types of surgery include any surgery involving the heart, abdominal surgery, thoracic surgery, and neurological surgery. As a general rule, it is recommended that patients cease consuming caffeinated beverages at least six hours before surgery to minimize the risk of unwanted complications. This includes all drinks with caffeine like coffee, tea, energy drinks and cocoa.
Impact of Caffeine
Caffeine has a significant physiological effect on the body. Caffeine stimulates the heart and causes it to beat faster, and can also increase blood pressure. This can be problematic during surgery as the combination of anesthesia, carbon dioxide and surgery itself can cause blood pressure irregularities. Additionally, the body is more sensitive to caffeine during surgery as medications used for anesthesia and pain relief can affect how the body responds to caffeine.
Risks Associated with Caffeine
According to a review published in the journal Anesthesiology, the potential risks associated with caffeine consumption before surgery include: low blood pressure, arrhythmia, seizures, stroke and even death. Caffeine also increases the risk of postoperative nausea and vomiting, as well as delayed recovery. Furthermore, caffeine has been known to interfere with anesthetic drugs, increasing their levels in the blood, and can also reduce the effectiveness of analgesic drugs given to manage pain.
Alternatives to Caffeine
If you’re looking for a caffeine-free pick-me-up before surgery, there are plenty of alternatives available. Tonics such as herbal tea and fizzy drinks are a great way to boost energy levels without the caffeine. Eating a light protein-based meal or a snack prior to surgery and staying hydrated is also beneficial.
Tips for Managing Caffeine Intake
Given the potentially serious risks associated with caffeine before surgery, it is important to be mindful of your caffeine intake in the days leading up to surgery. If you plan on having surgery, stop drinking caffeine — in any form — at least four hours prior to the procedure. Start with a gradual decrease in your intake a few days leading up to the procedure. Additionally, it’s important to remember that caffeine can be found in a variety of foods and drinks, so spend some time reading labels and asking your doctor or pharmacist if you are unsure.
Factors to Consider
Before undergoing surgery, make sure you mention any kind of dietary supplements or medications you take regularly, including caffeine, to your surgeon. Your surgeon can advise you on the correct steps to take prior to your operation, based on the type of surgery and your individual condition. Your preoperative care should include the recommendation to stop drinking caffeinated beverages and other forms of caffeine altogether a few hours before the procedure.
How Caffeine Affects The Body During Surgery
Caffeine can make the anesthesiologist’s job difficult by interfering with medications given during surgery. Caffeine consumption may cause your breathing rate and heart rate to be faster than normal, as well as an increase in blood pressure. This can lead to dangerous situations during surgery if not monitored. Caffeine can also delay the recovery process by making it harder to control the body’s temperature and breathing, as it is a stimulant drug.
Uses of Caffeine in Surgery
Despite the risks associated with caffeine consumption prior to surgery, in some cases, caffeine has been used to manage patient symptoms during surgery. Caffeine has been used to wake up patients from the unconsciousness induced from general anesthesia and to treat postoperative pain in certain cases. It is important to ascertain the potential benefits and risks with a doctor prior to administering this type of treatment.
Adverse Reactions to Caffeine During Surgery
If caffeine is misused during surgery, it can lead to a number of complications including palpitations, high blood pressure, anxiety, aggression, and irregular heart rate. If caffeine is given to a patient who has been drinking it prior to going under anesthesia, its effects can be intensified and can beyond the control of the anesthesiologist. Therefore it is important to be aware of any pre-existing caffeine intake prior to surgery.
Caffeine as a Trigger for Cardiac Events
Although it is generally recommended to abstain from caffeine in the hours or days leading up to surgery to minimize the risk of adverse reactions, caffeine can also be a trigger for cardiac events in some individuals. Patients should discuss their personal caffeine intake with their healthcare provider and be aware of this potential risk prior to surgery.
Factors that Increase Caffeine’s Effectiveness
Caffeine is known to have a short-term effect on alertness. When caffeine is consumed prior to surgery, it can enhance the effectiveness of the anesthesia and reduce the amount of medication needed for administering anesthesia, as well as reducing the amount of time it takes for a patient to recover. Additionally, caffeine can reduce the side effects associated with anesthesia such as nausea, vomiting, and drowsiness.
Why Caffeine Should Be Avoided Before Surgery
Caffeine can have a significant impact on the body, both during and after surgery. As a general rule, it is important to abstain from caffeine for several hours prior to any surgery involving the heart, abdominal surgery, thoracic surgery and neurological surgery. This is to reduce the risk of any potential complications as a result of caffeine’s stimulant nature. Additionally, it is important to be mindful of any pre-existing caffeine intake and to be aware of possible triggers for cardiac events related to caffeine.


