Single-Port Laparoscopic Colorectal Surgery: Early Clinical Experience
Bibliographic record
Abstract
BACKGROUND: Single-port laparoscopic surgery (SPLS) for colorectal pathology is an advanced technique wherein laparoscopic surgery is carried out through a single small incision hidden in the umbilicus. Advantages of this technique over standard laparoscopy are still under investigation. This study reports the initial experience and short-term outcomes of colorectal SPLS procedures in a single academic-based institution. SUBJECTS AND METHODS: All patients who underwent SPLS for colorectal procedures between February 2010 and March 2011 were recruited into this prospective study. Patients' demographics, pathology, and intraoperative and postoperative outcomes were collected. Time to first flatus and bowel movement, postoperative pain, duration of hospital stay, and complications were also measured. RESULTS: Twenty patients underwent colorectal SPLS: 17 patients underwent right hemicolectomy, and 3 patients had sigmoid resection. Mean age was 66±14 years, and body mass index was 25±4 kg/m(2). Median operative time for right hemicolectomy was 120 minutes (range, 110-136 minutes), and that for sigmoid resection was 158 minutes (range, 86-177 minutes). Mean measured incision length was 4.2±1.2 cm (range, 2.5-7 cm). Two cases were converted to standard multiport laparoscopy, and 1 was converted to open surgery Postoperatively, there was no mortality. Intra-abdominal abscess was observed in 3 patients. Median postoperative stay was 3 days (range, 3-3 days). Median number of lymph nodes extracted was 15 (range, 12-23). CONCLUSIONS: The SPLS is technically feasible with proper patient selection for a variety of applications in colorectal surgery. Improvement in instrumentation and technology is likely to expand the role of SPLS in minimally invasive surgery. It is important to audit outcomes as this novel approach is introduced.
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How this classification was reachedexpand
Full frame machine prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.
Distilled classifier scores by category (both heads)
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.001 | 0.003 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.001 | 0.001 |
| Science and technology studies | 0.000 | 0.001 |
| Scholarly communication | 0.001 | 0.001 |
| Open science | 0.001 | 0.001 |
| Research integrity | 0.000 | 0.001 |
| Insufficient payload (model declined to judge) | 0.004 | 0.001 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one source (direct Gemma or distilled Codex), not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".