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Randomized Controlled Trial
. 2020 Apr;34(4):1729-1735.
doi: 10.1007/s00464-019-06958-w. Epub 2019 Jul 18.

Is 3D faster and safer than 4K laparoscopic cholecystectomy? A randomised-controlled trial

Affiliations
Randomized Controlled Trial

Is 3D faster and safer than 4K laparoscopic cholecystectomy? A randomised-controlled trial

Matt Dunstan et al. Surg Endosc. 2020 Apr.

Abstract

Background: Laparoscopic surgery has well-established benefits for patients; however, laparoscopic procedures have a long and difficult learning curve, in large part due to the lack of stereoscopic depth perception. Developments in high-definition and stereoscopic imaging have attempted to overcome this. Three-dimensional high-definition (3D HD) systems are thought to improve operating times compared to two-dimensional high-definition systems. However their performance against new, ultra-high-definition ('4K') systems is not known.

Methods: Patients undergoing laparoscopic cholecystectomy were randomised to 3D HD or 4K laparoscopy. Operative videos were recorded, and the time from gallbladder exposure to separation from the liver (minus on table cholangiogram) was calculated. Blinded video assessment was performed to calculate intraoperative error scores.

Results: One hundred and twenty patients were randomised, of which 109 were analysed (3D HD n = 54; 4K n = 55). No reduction in operative time was detected with 3D HD compared to 4K laparoscopy (median [IQR]; 23.41 min [17.00-37.98] vs 20.90 min [17.67-33.03]; p = 0.91); nor was there any decrease observed in error scores (60 [56-62] vs 58 [56-60]; p = 0.27), complications or reattendance. Stone spillage occurred more frequently with 3D HD, but there were no other differences in individual error rates. Gallbladder grade and operating surgeon had significant effects on time to complete the operation. Gallbladder grade also had a significant effect on the error score.

Conclusions: A 3D HD laparoscopic system did not reduce operative time or error scores during laparoscopic cholecystectomy compared with a new 4K imaging system.

Keywords: Cholecystectomy; Depth Perception; Imaging; Laparoscopy; Three-Dimensional.

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Conflict of interest statement

Matt Dunstan has also received funding from GUTS Fighting Bowel Cancer for separate laboratory-based research. Ralph Smith, Katie Schwab, Andrea Scala, Piers Gatenby, Martin Whyte, Tim Rockall and Iain Jourdan have no other conflicts of interest or financial ties to disclose.

Figures

Fig. 1
Fig. 1
Consort diagram
Fig. 2
Fig. 2
Time to complete laparoscopic cholecystectomy by view. Circles denote values 1.5–3 times the interquartile range
Fig. 3
Fig. 3
Time to complete laparoscopic cholecystectomy by consultant. Circles denote values 1.5–3 times the interquartile range. Asterisks denote values more than 3 times outside the interquartile range
Fig. 4
Fig. 4
Error score during laparoscopic cholecystectomy by view. Circles denote values 1.5–3 times the interquartile range (note: overlapping outliers—four in total for 4K view)

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