Even though laparoscopic cholecystectomy is performed as a day procedure it is still classed as major surgery and carries associated risks. Any operation carries small risks related to the anaesthetic, and the stress of the operation on your heart and your lungs. During any operation there are small risks of bleeding, infection and small hernias developing where the keyhole incisions are made. You must also be aware that your surgeon is operating in your belly near other organs such as your bowel. Specific to having your gallbladder removed there is a small risk of your bile duct being injured. Although this is less than one in 350 it can require major surgery subsequent to your first operation. Occasionally bile leakage can occur from the liver or cystic duct after cholecystectomy and this can require further keyhole surgery or telescope tests such as ERCP to stop the leakage. If this occurs it can delay your recovery by 3-4 days.
Overall, gallbladder surgery is safe and effective with a very low complication rate. If you have any questions you should ask Dr Hamer before proceeding.