An observational study in Emergencies, sponsored by Shanghai 6th People's Hospital. Recruiting at 1 site in China. Per ClinicalTrials.gov, last updated 2026-05-07.
Sponsored by Shanghai 6th People's Hospital · Observational
No prior studies have stratified the difficulty of laparoscopic appendectomy (LA). The investigators aimed to investigate preoperative factors as indicators of difficult LAs based on the experience of surgical trainees and to develop a predictive model accordingly.
Acute appendicitis is the most common cause of surgical emergencies and laparoscopic appendectomy (LA) is usually attempted by surgical trainees. This study aim to explore the preoperative and intraoperative factors affecting the degree of surgical difficulty and to establish a model for validation, so that it can be subsequently replicated in training programs.
1,692 studies on the registry are indexed under Emergencies; 333 are open to participants now.
This study's planned enrollment of 500 is above the median of 353 across 714 observational studies indexed under Emergencies.
Browse Emergencies studies →Shanghai 6th People's Hospital is the lead sponsor of 69 studies on the registry; 40 are open to participants now.
Counted across the registry records on this site, refreshed daily.
Patients with confirmed acute appendicitis, were willing to and suitable to undergo laparoscopic appendectomy (LA). Patients were well informed about the surgical procedure and were aware of the potential benefits and risks. Patient consented for us to use perioperative data.
Exclusion Criteria:
(1) operative time more than 75% of the overall study cases (2) severe intraoperative vascular or uncontrolled bleeding (3) conversion to open approach
Other: Observations on preoperative and intraoperative factors influencing the difficulty of surgery
the remaining of the entire study cases excluding the difficult cases
Other: Observations on preoperative and intraoperative factors influencing the difficulty of surgery
Age, body mass index, gender, inflammatory indicators, previous history of abdominal surgery, underlying disease
Operative time
operative time was defined as the duration from incision to closure, and was collected from anesthesia record sheet
Time frame: During surgery
Number of participants with postoperative complications
Postoperative bleeding, surgical site infection and other complications
Time frame: through study completion, an average of 1 year
Hospitalization
days of hospitalization
Time frame: 1 day of discharge
Degree of pain
pain intensity was assessed using a standard visual analogue score, with a score of 0 to 10 corresponding to no pain to the most severe pain
Time frame: approximately 4 hours after surgery and on postoperative day 1
Plan to share: Undecided — Data are available on request due to privacy or other restrictions. The data that support the findings of this study are available on request from Ling Zhan. The data are not publicly available due to them containing information that could compromise research participant privacy.
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Shanghai 6th People's Hospital