Abstract:
BACKGROUND AND STUDY AIMS:Several reports have demonstrated the safety of pure natural-orifice transluminal endoscopic surgery (P-NOTES) using transanal endoscopic microsurgery (TEM) and embryonic NOTES (E-NOTES; laparoscopic surgery through the umbilicus). This study was performed to compare the safety and applicability of NOTES rectosigmoidectomy between E-NOTES and P-NOTES in a swine model. PATIENTS AND METHODS:E-NOTES was conducted through a single port using laparoscopic instruments (n = 11). P-NOTES was performed using TEM with transgastric endoscopic assistance (n = 11). Gastrotomies were created using a needle knife and the balloon dilatation technique, and closed using T-anchors. Blood samples were collected to evaluate changes in systemic cytokine levels during the preoperative and postoperative periods; operative outcomes were also evaluated and compared between the groups. The necropsy findings were recorded after sacrifice at 1 week after the procedure. RESULTS:The mean operative time for P-NOTES was significantly longer than that for E-NOTES (239 vs. 103 minutes, P < 0.001). The mean distance from the anal verge to colorectal anastomosis in the P-NOTES group was significantly less than that in the E-NOTES group (2.9 vs. 17.6 cm, P < 0.001). On necropsy, the complication rate of P-NOTES was higher than that of E-NOTES, but without statistical significance (54.5 % vs. 18.2 %, P = 0.091). The differences in changes in TNF-α, C-reactive protein, interleukin-6, and interleukin-1β between P-NOTES and E-NOTES were not significant. CONCLUSIONS:E-NOTES rectosigmoidectomy in the swine model is safe, but remains challenging for use in pelvic dissection. P-NOTES rectosigmoidectomy using TEM may be a promising tool for pelvic dissection, but the transgastric approach involves a high degree of risk.
journal_name
Endoscopyjournal_title
Endoscopyauthors
Sohn DK,Jeong SY,Park JW,Kim JS,Hwang JH,Kim DW,Kang SB,Oh JHdoi
10.1055/s-0030-1256239subject
Has Abstractpub_date
2011-06-01 00:00:00pages
526-32issue
6eissn
0013-726Xissn
1438-8812journal_volume
43pub_type
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