After the blockage of the neck of the gallbladder is relieved with a cholecystostomy, it may be safer to remove the gallbladder later, if necessary. There are some risks associated with general anesthesia. Discuss these risks with your doctor. The local anesthesia may not numb the area quite enough, and you may feel some minor discomfort. Also, in rare cases, you may have an allergic reaction to the drug used in this type of anesthesia.
Local anesthesia is considered safer than general anesthesia.
The tube might leak or not drain the gallbladder entirely. You may get an infection and the doctor may reopen the cut and put in a tube to drain the infection. You may need antibiotics. You should ask your doctor how these risks apply to you. You feel nauseated.