Comparing the efficiency of 2 cold snare polypectomy techniques during colonoscopy

Interventional Procedure (Arm 1): Snare-WithIn-The-scope-CHannel (SWITCH) Cold Snare Polypectomy
In this arm, all polyps encountered during colonoscopy will be removed by SWITCH cold polypectomy technique. This involved advancement of the snare which is already in the scope channel, transecting the polyp (i.e. polypectomy), then partially withdrawing the snare into the channel (without removing the snare from the scope channel) prior to suctioning the polyp for retrieval. All further polyps encountered in the same patient will be removed by the same technique.
All procedures will be performed by 2 consultant gastroenterologists with expertise in therapeutic colonoscopy. The procedure duration is similar to any standard colonoscopy and is allocated half an hour slot in the weekday elective endoscopy list. Duration can vary depending on number of polyps encountered.
Primary outcome(s): - Mean total polypectomy time per patient
The total polypectomy time is defined as the total time from a polyp has been detected detected by the endoscopist until the polyp has been transected, then has been suctioned and has reached the trap (i.e. from polyp detection until polyp reaching the trap) , as measured by the research assistant with a stop watch. [Assessed from polyp detection until polyp retrieval into the trap. ]
Study Design: Purpose: Treatment; Allocation: Randomised controlled trial; Masking: Blinded (masking used);Assignment: Parallel;Type of endpoint: Efficacy