interval appendectomy
Delayed surgical removal of the appendix following successful non-operative management of complicated appendicitis.
Full Definition
Interval appendectomy is the elective surgical removal of the appendix performed weeks to months after successful conservative treatment of complicated appendicitis, typically involving abscess formation or phlegmon. This approach allows initial management with antibiotics and percutaneous drainage when indicated, followed by appendectomy during a 'cold' interval when inflammation has resolved. The timing is usually 6-12 weeks after the acute episode to allow complete resolution of inflammatory changes and easier, safer surgery. This strategy is particularly valuable in patients with appendiceal abscess where immediate surgery would be technically challenging and carry higher complication rates. Current practice varies regarding the necessity of interval appendectomy versus observation alone.
Usage
Usage note: Distinguish from incidental appendectomy performed during other procedures.
In Context
- "The patient was scheduled for interval appendectomy six weeks following successful antibiotic treatment of perforated appendicitis." — general surgery clinic note
- "Interval appendectomy was technically straightforward given complete resolution of the inflammatory process." — operative report