Polymeric Clips Match Stapler Safety at Lower Cost in Appendectomy

Optimizing Appendiceal Stump Closure in Laparoscopic Surgery

Laparoscopic appendectomy remains the gold standard for acute appendicitis, offering reduced hospital stays and diminished postoperative pain compared to open approaches [1]. A critical technical requirement of the procedure is the secure ligation of the appendiceal stump, as failure to achieve a watertight seal can result in catastrophic complications such as fecal peritonitis (inflammation of the peritoneum caused by bowel content leakage) or intra-abdominal abscesses [2, 3]. While surgeons utilize various methods for stump management, including endoloops, intracorporeal sutures, and mechanical endostaplers, the most efficient technique is still debated [3, 4]. Although endostaplers are often selected for their perceived reliability in difficult cases, their high cost is a significant barrier to routine implementation [5]. Consequently, there is increasing clinical interest in evaluating more affordable alternatives, such as polymeric clips, to maintain surgical safety while optimizing resource utilization [5, 6]. A new study now provides a detailed comparison of these techniques to determine their impact on safety and cost-effectiveness in a large patient cohort.

Retrospective Analysis of 692 Laparoscopic Procedures

The researchers conducted a retrospective review of 692 adult patients who underwent laparoscopic appendectomy for acute appendicitis between January 2022 and December 2024. This substantial cohort was analyzed to compare the efficacy and safety of non-absorbable polymeric clips against mechanical endostapler techniques. The primary objective was to identify a surgical approach that minimizes procedural costs without compromising clinical outcomes. To ensure a rigorous comparison, the study evaluated several critical parameters, including the appendiceal diameter (the transverse measurement of the appendix at the point of ligation) and the histopathological stage, which categorizes the microscopic severity of the inflammation from simple to gangrenous or perforated. The researchers also recorded patient demographics, operative time, and postoperative outcomes using the Clavien-Dindo classification, a standardized system that grades surgical complications based on the level of therapeutic intervention required (ranging from Grade I for minor deviations to Grade V for patient death). Data analysis was performed using SPSS software version 25.0, with the threshold for statistical significance set at a p-value of less than 0.05. This statistical framework allowed the authors to evaluate cost-effectiveness by weighing the direct price of materials against clinical results, determining if the less expensive polymeric clips could match the performance of endostaplers across varying levels of tissue inflammation and anatomical complexity.

Clinical Characteristics and Intraoperative Findings

The distribution of surgical techniques revealed that polymeric clips were used in 87.6% of the patients (n = 606), while mechanical staplers were employed in the remaining 12.4% of cases (n = 86). Analysis of patient demographics indicated that the choice of closure method often aligned with the clinical complexity of the presentation. In the stapler group, patient age was significantly higher (p < 0.001), and these individuals presented with a significantly higher Charlson Comorbidity Index (p < 0.001), a validated scoring system that predicts ten year mortality by weighting pre-existing conditions such as chronic obstructive pulmonary disease or congestive heart failure. Markers of systemic inflammation also differed significantly; patients in the stapler group presented with a significantly higher C-reactive protein (CRP) level (p < 0.001), an acute-phase reactant that serves as a proxy for the intensity of the inflammatory response. Furthermore, the appendiceal diameter was significantly higher in the stapler group (p < 0.001), suggesting that surgeons preferred staplers when the appendix was edematous or enlarged. These factors contributed to increased surgical complexity, as the operative time was significantly higher in the stapler group (p = 0.003). Intraoperative findings further underscored this difficulty, as intraoperative perforation occurred in 53.5% of patients in the stapler group, compared to only 16.7% in the clip group (p < 0.001), indicating that staplers were primarily reserved for advanced cases where tissue friability was a major concern.

Safety Outcomes in Perforated and Non-Perforated Cases

The primary clinical concern when selecting a closure method is the risk of postoperative adverse events, particularly stump leaks. Despite the higher clinical complexity and increased rates of intraoperative perforation observed in the stapler group, the overall complication rates were similar between the two groups (p = 0.089). This finding suggests that the use of polymeric clips does not compromise patient safety, even when compared to the more robust mechanical closure provided by endostaplers in a general surgical population. To further investigate the reliability of polymeric clips in high-risk scenarios, the researchers conducted a focused analysis on a subgroup of 146 perforated appendicitis cases. In these instances, where tissue integrity is often compromised and the risk of postoperative infection is elevated, the choice of closure method did not appear to influence the clinical trajectory. Specifically, no significant differences were observed in complication rates (p = 0.601) between patients who received clips and those who received staplers within this perforated subgroup. Furthermore, no significant differences were observed in Clavien-Dindo grades (p = 0.653) within this subgroup. This indicates that not only was the frequency of complications comparable, but the clinical severity and the intensity of care needed to address those complications remained consistent regardless of whether a polymeric clip or a stapler was used for stump closure.

Economic Implications and Clinical Utility

The financial disparity between the two closure methods is substantial and carries significant implications for hospital resource management. According to the study data, the mean cost of the polymeric clip was 2.33 USD, while the mean cost of the stapler was 31.35 USD (p < 0.001). This more than thirteenfold difference in price highlights a clear economic advantage for the use of clips in routine laparoscopic appendectomy. When these figures are extrapolated across the high volume of appendectomies performed annually, the potential for institutional cost savings is evident without necessitating a change in surgical safety standards. The researchers concluded that polymeric clips represent a safe and cost-effective option for appendiceal stump closure in the adult population. This conclusion is reinforced by the finding that postoperative outcomes were similar across techniques despite staplers being used in more complex intraoperative situations, such as cases involving larger appendiceal diameters or higher comorbidity scores. While surgeons often reserve staplers for technically demanding scenarios where tissue thickness or inflammation may preclude the use of a clip, the data suggest that for the vast majority of patients, the more economical clip provides equivalent clinical results. For the practicing clinician, these findings support the routine use of polymeric clips as a primary closure method, reserving more expensive stapling devices for specific anatomical challenges rather than as a default surgical preference.

References

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2. Borkar N, Sharma C, Mohanty D, Singha SK. A Systematic Review and Meta-Analysis of Harmonic Scalpel Versus Conventional Techniques of Appendiceal Stump Closure in Laparoscopic Appendicectomy. Cureus. 2022. doi:10.7759/cureus.28759

3. Makaram N, Knight SR, Ibrahim A, Patil P, Wilson MSJ. Closure of the appendiceal stump in laparoscopic appendectomy: A systematic review of the literature.. Annals of medicine and surgery (2012). 2020. doi:10.1016/j.amsu.2020.07.058

4. Najah Q, Makhlouf HA, Abusalah MA, et al. Effectiveness of different appendiceal stump closure methods in laparoscopic appendectomy a network meta-analysis.. Langenbeck's archives of surgery. 2024. doi:10.1007/s00423-024-03452-3

5. Ihnát P, Tesař M, Tulinský Ľ, Rudinská LI, Okantey O, Durdík Š. A randomized clinical trial of technical modifications of appendix stump closure during laparoscopic appendectomy for uncomplicated acute appendicitis. BMC Surgery. 2021. doi:10.1186/s12893-021-01279-z

6. Trejo-Ávila ME, Romero-Loera S, Cárdenas-Lailson E, et al. Enhanced recovery after surgery protocol allows ambulatory laparoscopic appendectomy in uncomplicated acute appendicitis: a prospective, randomized trial.. Surgical endoscopy. 2019. doi:10.1007/s00464-018-6315-9