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Open versus laparoscopic appendicectomy: a critical review
M Kapischke1, A Caliebe, J Tepel
1Department of General and Thoracic Surgery, University Hospital of Schleswig-Holstein, Campus Kiel, Arnold Heller Strasse 07, D-24105 Kiel, Germany. mkapischke@web.de
Background:
The benefit of laparoscopic appendicectomy remains unclear. We have analysed available randomised studies comparing laparoscopic and open appendicectomy regarding their clinical pitfalls and statistical relevance.
Methods:
Thirty eight studies were analysed in terms of the following aspects: A. clinical problems (e.g., expertise of the surgeons, pre- and postoperative antibiotic treatment, definition of complications, blinding of outcomes) and B. statistical problems (e.g., definition of primary and secondary outcomes, power and sample size, statistical methods, confidence intervals, comparability of groups and studies).
Results:
Most of the studies have clinical and statistical pitfalls. The most important pitfalls are the uncertain expertise of the operating surgeons, blinding, and the exploratory nature of the studies. Our analysis aims at giving useful information for the appraisal of existing studies and the conduct of further studies. It also gives some preliminary results.
Conclusions:
More than twenty years after Semm performed the first laparoscopic appendicectomy, it is necessary to clarify the superiority of laparoscopic or open appendectomy with well-defined, carefully designed randomised studies.
Insights
The benefit of laparoscopic appendicectomy over open surgery is unclear due to clinical and statistical flaws in many studies. Well-designed randomized trials are needed to clarify the superiority of either surgical approach.
Area of Science:
- General Surgery
- Minimally Invasive Surgery
Background:
- The clinical benefit of laparoscopic appendicectomy compared to open appendicectomy is not definitively established.
- Existing randomized studies have been analyzed for their methodological limitations.
Purpose of the Study:
- To critically evaluate the clinical and statistical pitfalls in randomized studies comparing laparoscopic and open appendicectomy.
- To provide guidance for appraising current literature and designing future research.
Main Methods:
- A systematic analysis of 38 randomized studies was performed.
- Evaluated clinical aspects included surgeon expertise, antibiotic protocols, complication definitions, and blinding.
- Assessed statistical issues such as outcome definitions, sample size, statistical methods, and study comparability.
Main Results:
- A significant number of studies exhibit both clinical and statistical deficiencies.
- Key limitations identified include uncertainty in surgeon experience, lack of blinding, and the exploratory nature of many trials.
- Preliminary findings highlight the need for methodological improvements.
Conclusions:
- Despite advancements, the superiority of laparoscopic appendicectomy over open appendicectomy remains unproven.
- There is a critical need for rigorously designed, well-defined randomized controlled trials to resolve this clinical question.
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