Surgical Performance
Conditions
Brief summary
Modern display technique seems to optimize visualization in minimal-invasive surgery. Many systems are available right now with a fundamental difference between the passive polarizing 3-dimensional (3D) and 2-dimensional (2D) technique. Data seems to show a benefit for the 3D technique in the visualization of the operative field. This could lead to more precision in minimal-invasive surgery. 2D-systems with high resolution of 4.096 x 2.180 pixels (4K) could be a promising alternative. This study wants to evaluate if 3D- or 4K- display technique could optimize surgeons´ view and improve the performance during minimal-invasive surgery. Therefore medical students and surgeons of different experience levels will perform surgical tasks on a minimal-invasive training system.They will be randomized to use first the 3D- or the 4K-display system in the training set-up. After completing the tasks with one system the minimal-invasive training set-up will be repeated with the other display system. NASA (National Aeronautics and Space Administration) task load index is evaluated after each round. The ability for stereoscopic vision is tested after finishing the complete training set-up with both systems. The primary outcome parameter surgical performance will be evaluated in this study defined as the performance time and the number of defined mistakes made during each task.
Interventions
OTHER3D-display system
The subjects will perform tasks on a minimal-invasive/laparoscopic training set-up. They will perform the tasks with a 3D-display system or a 4K-display system. The intervention type 3D-display system means that the training-set up is performed first with 3D-display system an after that with the 4K-display system.
OTHER4K-display system
The subjects will perform tasks on a minimal-invasive/laparoscopic training set-up. They will perform the tasks with a 3D-display system or a 4K-display system. The intervention type 4K-display system means that the training-set up is performed first with 4K-display system and after that with the 3D-display system.
Sponsors
Universitätsklinikum Köln
Study design
Allocation
RANDOMIZED
Intervention model
CROSSOVER
Primary purpose
TREATMENT
Masking
SINGLE (Subject)
Eligibility
Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
Yes
Inclusion criteria
* medical student * medical doctor * informed consent signed
Exclusion criteria
* known deficit of stereoscopic view * experience with the tasks of the minimal-invasive training set-up * not able to use both hands for minimal-invasive training set-up
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Surgical Performance Time | immediately after tasks are performed, Day 1 | The surgical performance time is defined as time needed to complete the tasks at the minimal-invasive trainer. the time is measured in seconds |
| Surgical Performance Errors | immediately after tasks are performed, Day 1 | it is measured once directly after completing the task with the 3D performance time and the number of errors: the surgical performance errors are defined as the number of defined errors made during the performance of the tasks at the minimal invasive trainer surgical performance errors = number of errors |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| Stereoscopic view Bagolini | immediately after tasks with both systems (3D and 4K) are performed, Day 1 | Qualitative test for assesment of stereoscopic view units : positive /negative/diplopia |
| Stereoscopic view Lang I/II | immediately after tasks with both systems (3D and 4K) are performed, Day 1 | Semi-quantitative test for assesment of stereoscopic view units : arc seconds |
| Task Load | immediately after tasks are performed, Day 1 | task load felt by the subjects evaluated by NASA task load index, after tasks with 3 D- and 4 K- systems are completed NASA task load index is evaluated once |
| Stereoscopic view TNO | immediately after tasks with both systems (3D and 4K) are performed, Day 1 | Semi-quantitative test for assesment of stereoscopic view units: arc seconds (480, 240, 120, 60, 30, 15) |
| Stereoscopic view Cover | immediately after tasks with both systems (3D and 4K) are performed, Day 1 | qualitative test for assesment of stereoscopic view units: phoria/tropia |
| Stereoscopic view Titmus | immediately after tasks with both systems (3D and 4K) are performed, Day 1 | Semi-quantitative test for assesment of stereoscopic view units : arc seconds (fly at 3550 arc seconds, animals at 400, 200, 100 arc seconds,rings at 800, 400, 200, 140, 100, 80, 60, 50, 40 arc seconds) |
| Learning curve | immediately after tasks with both systems (3D and 4K) are performed, Day 1 | Learning curve after the completeness of the tasks |
Countries
Germany
Outcome results
None listed