Pediatric appendectomy: optimal surgical timing and risk assessment

Area of Science:

• Pediatric Surgery
• Surgical Outcomes Research

Background:

• Appendicitis is a common pediatric surgical condition, with management evolving from emergent to planned interventions.
• Concerns exist regarding increased complication rates, such as intra-abdominal abscess (IAA), with delayed appendectomy.
• Intra-abdominal abscesses significantly impact healthcare resources, patient recovery, and family well-being.

Purpose of the Study:

• To evaluate risk factors influencing the development of intra-abdominal abscess (IAA) after pediatric appendectomy.
• To identify preoperative, intraoperative, and postoperative factors associated with IAA development.

Main Methods:

• Retrospective analysis of 220 children undergoing appendectomy over 1.5 years.
• Inclusion of preoperative factors: demographics, symptom duration, laboratory values, imaging findings (appendicolith, fluid, abscess, phlegmon), failed nonoperative management, antibiotics, and timing.
• Inclusion of intraoperative factors: timing, perforation, surgical approach (open/laparoscopic), and appendiceal ligation method.
• Inclusion of postoperative factors: antibiotic duration and type.

Main Results:

• The overall incidence of postoperative IAA was 4.5% (9 of 220).
• Children receiving overnight antibiotics and resuscitation preoperatively had a significantly lower risk of IAA (P < 0.0003).
• Preoperative fever (P < 0.001) and complicated appendicitis on imaging (P < 0.0001) were significant risk factors for IAA.
• Perforated appendicitis increased IAA risk, unaffected by emergent or delayed nonoperative strategies.
• Timing of appendectomy was crucial in reducing IAA incidence across all presentations.

Conclusions:

• Preoperative resuscitation with antibiotics may mitigate IAA risk in pediatric appendicitis.
• Fever and imaging-confirmed complicated appendicitis are critical predictors of postoperative IAA.
• Optimizing appendectomy timing is paramount for reducing IAA incidence, regardless of perforation status.