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Predictive value of background experiences and visual spatial ability testing on laparoscopic baseline performance among residents entering postgraduate surgical training

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Abstract

Background

Emerging evidence suggests that despite dedicated practice, not all surgical trainees have the ability to reach technical competency in minimally invasive techniques. While selecting residents that have the ability to reach technical competence is important, evidence to guide the incorporation of technical ability into selection processes is limited. Therefore, the purpose of the present study was to evaluate whether background experiences and 2D–3D visual spatial test results are predictive of baseline laparoscopic skill for the novice surgical trainee.

Methods

First-year residents were studied. Demographic data and background surgical and non-surgical experiences were obtained using a questionnaire. Visual spatial ability was evaluated using the PicSOr, cube comparison (CC) and card rotation (CR) tests. Technical skill was assessed using the camera navigation (LCN) task and laparoscopic circle cut (LCC) task. Resident performance on these technical tasks was compared and correlated with the questionnaire and visual spatial findings.

Results

Previous experience in observing laparoscopic procedures was associated with significantly better LCN performance, and experience in navigating the laparoscopic camera was associated with significantly better LCC task results. Residents who scored higher on the CC test demonstrated a more accurate LCN path length score (r s(PL) = −0.36, p = 0.03) and angle path (r s(AP) = −0.426, p = 0.01) score when completing the LCN task. No other significant correlations were found between the visual spatial tests (PicSOr, CC or CR) and LCC performance.

Conclusion

While identifying selection tests for incoming surgical trainees that predict technical skill performance is appealing, the surrogate markers evaluated correlate with specific metrics of surgical performance related to a single task but do not appear to reliably predict technical performance of different laparoscopic tasks. Predicting the acquisition of technical skills will require the development of a series of evidence-based tests that measure a number of innate abilities as well as their inherent interactions.

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Abbreviations

PicSOr:

Pictorial surface orientation

CR:

Card rotation

CC:

Cube comparison

LCN:

Laparoscopic camera navigation

LCC:

Laparoscopic circle cut

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Disclosures

Marisa Louridas, Lauren Quinn and Teodor Grantcharov have no conflicts of interest or financial ties to disclose.

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Authors and Affiliations

  1. University of Toronto, Toronto, ON, Canada

    Marisa Louridas & Teodor P. Grantcharov

  2. Li Ka Shing Knowledge Institute, Toronto, ON, Canada

    Lauren E. Quinn

  3. St. Michael’s Hospital, 30 Bond St., Toronto, ON, M5B 1W8, Canada

    Marisa Louridas

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  1. Marisa Louridas
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  2. Lauren E. Quinn
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  3. Teodor P. Grantcharov
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Correspondence to Marisa Louridas.

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Louridas, M., Quinn, L.E. & Grantcharov, T.P. Predictive value of background experiences and visual spatial ability testing on laparoscopic baseline performance among residents entering postgraduate surgical training. Surg Endosc 30, 1126–1133 (2016). https://doi.org/10.1007/s00464-015-4313-8

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  • DOI: https://doi.org/10.1007/s00464-015-4313-8

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