When modern anaerobic culture techniques are used, about 50% of all pyogenic liver abscesses have been found to be caused by anaerobes 7 with positive blood cultures in 54% of these cases. Staphylococcus aureus and group A streptococcus account for 20% or less of cases.iliary disease is now the most common source of pyogenic abscess 4. Liver abscess can also arise from infection of the gall bladder, through the blood stream from infected foci anywhere in the body, and following direct trauma.
1 Your anesthesia will wear off in approximately 1 to 3 hours after the procedure. It is very important not to chew on the numb side (to prevent biting tongue, lip, etc.) until the anesthesia wears off.  Children should be observed until the anesthesia has worn off.
Side effects of anesthesia can occur during a surgery or procedure, or afterward when you are recovering and the anesthesia is wearing off.erious but rare complications include: 1  Pneumothorax â When anesthesia is injected near the lungs, the needle may accidentally enter the lung. 2  This could cause the lung to collapse and require a chest tube to be inserted. 3  Nerve damage â Although very rare, nerve damage can occur, causing temporary or permanent pain.