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Understanding Sedation:
What to expect and how to prepare
What is sedation?
Sedation involves administering medicines through an intravenous cannula (a drip inserted into a vein). It is typically used alongside local anaesthesia to numb the area being operated on, ensuring you remain pain-free throughout the procedure. The goal of sedation is to make you comfortable, sleepy, and relaxed. Unlike general anaesthesia, you will usually be able to follow simple commands and may recall some parts of the procedure.
For which procedures might sedation be applicable?
Sedation is particularly suitable for a range of procedures, including body surface surgeries such as the removal of lumps and bumps and certain types of hernia surgery. It is also commonly used for cardiological procedures, including some forms of atrial fibrillation surgery and TAVI (trans-catheter aortic valve replacement). Additionally, sedation may be employed for various diagnostic procedures to ensure comfort and relaxation.
What should I do beforehand?
Before your procedure, ensure you have transport arrangements to and from the hospital, as we typically advise against driving or making important decisions for 24 hours after sedation. You should stop eating at least six hours before the scheduled start of your procedure, but you may continue to drink clear fluids such as water, diluted squash, black tea, or black coffee in normal amounts.
When will I meet the anaesthetist giving my sedation?
You will meet your anaesthetist on the day of your procedure. They will review your medical history, discuss how the sedation will be administered, and explain any specific risks that may apply to you.
How is sedation delivered and monitored?
Sedation is delivered through an infusion of medicines via a drip (cannula) inserted into your hand or forearm. Your anaesthetist will remain with you throughout the procedure, ensuring your comfort and safety. Continuous monitoring of your vital signs will be conducted to quickly identify and address any potential issues.
What are the risks of sedation?
Serious problems or complications with sedation are uncommon. You may experience minor bruising or mild discomfort at the site where the cannula was inserted, which typically resolves within a few days. Rarely, an allergic reaction to the medication may occur, though this is infrequent. In some cases, due to discomfort or surgical challenges, it may be necessary to switch to general anaesthesia. Your anaesthetist will be fully prepared to manage this transition safely if required.
Where can I get more information?
Detailed information on the benefits and risks of sedation are provided by the Royal College of Anaesthetists.
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