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Clinical Trial Summary

The hypothesis of this trial is to demonstrate that training junior surgeons on a virtual reality (VR) simulator in addition to didactic teaching will improve their intraoperative performance compared to those trainees who receive the traditional teaching paradigm (i.e, operating under the guidance and instruction of a consultant general surgeon).

We anticipate that the VR trained group will make less critical intraoperative errors and will perform faster than their traditionally trained colleagues.

Other study questions include:

1. Does objective assessment of fundamental abilities (FA) such as visuo-spatial ability predict intra-operative performance?

2. Do FA predict rate of learning to reach proficiency?


Clinical Trial Description

We plan to assess up to 30 junior surgical trainees from training hospitals nationwide. All will have baseline assessment of fundamental abilities (FA) such as psychomotor, visuospatial and perceptual abilities. The trainees will then be randomised to one of two groups:

Group A-will receive the 'traditional' training programme; i.e. will receive whatever clinical training on a patient their supervising consultant deems appropriate. This is the way junior surgeons are currently trained. They will also receive the standard didactic teaching on the School for Surgeons e-learning resource.

Group B-will be assigned to the 'proficiency-based progression' training programme. These trainees will be required to train on the virtual reality (VR) simulator (Lap Simâ„¢) for a laparoscopic cholecystectomy (LC). Trainees will have objectively set goals to reach on the simulator and will have to demonstrate proficiency before they are permitted to progress to the next, more challenging level. These supervised sessions will last no longer than one hour at a time. The proficiency measures will be predetermined errors, economy of instrument movement and economy and safety of diathermy usage.

The benchmark or 'gold standard' of proficiency will be established from the objectively assessed performance of expert consultant surgeons.

Group B will also receive the standard School for Surgeons instruction but, unlike Group A, they will have to demonstrate proficiency on the didactic module before they progress to the operating theatre.

Trainees in both the VR and traditional group will then each perform five video-recorded laparoscopic cholecystectomies at their respective training hospitals. The first three will be carried out early in the trainees rotation and the last two towards the end of the rotation. Each trainee will be supervised by a consultant surgeon for all procedures; the consultant will be ready to take over the procedure should the trainee run into difficulties.

The video recordings will be forwarded to the National Surgical Training Centre and will be assessed by two consultant surgeons blinded to the training status of the trainee.

The LC will be divided into 3 distinct phases, exposure of the cystic duct and artery plus clip placement on these structures, tissue division and finally diathermy excision of the gallbladder from the liver-bed. The different phases of the procedure will be marked, using a scoring system which will enable the observers to record whether the event or a pre-described error had or had not occurred. Senior surgeon takeover events will also be scored as errors. ;


Study Design

Allocation: Randomized, Intervention Model: Parallel Assignment, Masking: Single Blind (Outcomes Assessor)


Related Conditions & MeSH terms


NCT number NCT00712387
Study type Interventional
Source Royal College of Surgeons, Ireland
Contact
Status Active, not recruiting
Phase N/A
Start date July 2008
Completion date July 2009

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