Quantifying a Learning Curve for Video Head Impulse Test: Pitfalls and Pearls
Objective: The video head impulse test (vHIT) is nowadays a fast and objective method to measure vestibular function. However, its usability is controversial and often considered as a test performed by experts only. We sought to study the learning curve of novices and to document all possible mistak...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Frontiers Media S.A.
2021-01-01
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| Series: | Frontiers in Neurology |
| Subjects: | |
| Online Access: | https://www.frontiersin.org/articles/10.3389/fneur.2020.615651/full |
| _version_ | 1818562648322605056 |
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| author | Athanasia Korda Thomas C. Sauter Marco Domenico Caversaccio Georgios Mantokoudis |
| author_facet | Athanasia Korda Thomas C. Sauter Marco Domenico Caversaccio Georgios Mantokoudis |
| author_sort | Athanasia Korda |
| collection | DOAJ |
| description | Objective: The video head impulse test (vHIT) is nowadays a fast and objective method to measure vestibular function. However, its usability is controversial and often considered as a test performed by experts only. We sought to study the learning curve of novices and to document all possible mistakes and pitfalls in the process of learning.Methods: In a prospective cohort observational study, we included 10 novices. We tested their ability to perform correctly horizontal head impulses recorded with vHIT. We assessed vHITs in 10 sessions with 20 impulses per session giving a video instruction after the first session (S1) and individual feedback from an expert for session 2 (S2) up to session 10 (S10). We compared VOR gain, the HIT acceptance rate by the device algorithm, mean head velocity, acceleration, excursion, and overshoot between sessions.Results: A satisfying number of accepted HITs (80%) was reached after an experience of 160 vHITs. Mean head velocity between sessions was always in accepted limits. Head acceleration was too low at the beginning (S1) but improved significantly after the video instruction (p = 0.001). Mean head excursion and overshoot showed a significant improvement after 200 head impulses (p < 0.001 each).Conclusions: We showed that novices can learn to perform head impulses invHIT very fast provided that they receive instructions and feedback from an experienced examiner. Video instructions alone were not sufficient. The most common pitfall was a low head acceleration. |
| first_indexed | 2024-12-14T01:06:32Z |
| format | Article |
| id | doaj.art-15934874155d46aabb26532348a35475 |
| institution | Directory Open Access Journal |
| issn | 1664-2295 |
| language | English |
| last_indexed | 2024-12-14T01:06:32Z |
| publishDate | 2021-01-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Neurology |
| spelling | doaj.art-15934874155d46aabb26532348a354752022-12-21T23:22:58ZengFrontiers Media S.A.Frontiers in Neurology1664-22952021-01-011110.3389/fneur.2020.615651615651Quantifying a Learning Curve for Video Head Impulse Test: Pitfalls and PearlsAthanasia Korda0Thomas C. Sauter1Marco Domenico Caversaccio2Georgios Mantokoudis3Department of Otorhinolaryngology, Head and Neck Surgery, Inselspital, University Hospital Bern and University of Bern, Bern, SwitzerlandDepartment of Emergency Medicine, Inselspital, University Hospital Bern and University of Bern, Bern, SwitzerlandDepartment of Otorhinolaryngology, Head and Neck Surgery, Inselspital, University Hospital Bern and University of Bern, Bern, SwitzerlandDepartment of Otorhinolaryngology, Head and Neck Surgery, Inselspital, University Hospital Bern and University of Bern, Bern, SwitzerlandObjective: The video head impulse test (vHIT) is nowadays a fast and objective method to measure vestibular function. However, its usability is controversial and often considered as a test performed by experts only. We sought to study the learning curve of novices and to document all possible mistakes and pitfalls in the process of learning.Methods: In a prospective cohort observational study, we included 10 novices. We tested their ability to perform correctly horizontal head impulses recorded with vHIT. We assessed vHITs in 10 sessions with 20 impulses per session giving a video instruction after the first session (S1) and individual feedback from an expert for session 2 (S2) up to session 10 (S10). We compared VOR gain, the HIT acceptance rate by the device algorithm, mean head velocity, acceleration, excursion, and overshoot between sessions.Results: A satisfying number of accepted HITs (80%) was reached after an experience of 160 vHITs. Mean head velocity between sessions was always in accepted limits. Head acceleration was too low at the beginning (S1) but improved significantly after the video instruction (p = 0.001). Mean head excursion and overshoot showed a significant improvement after 200 head impulses (p < 0.001 each).Conclusions: We showed that novices can learn to perform head impulses invHIT very fast provided that they receive instructions and feedback from an experienced examiner. Video instructions alone were not sufficient. The most common pitfall was a low head acceleration.https://www.frontiersin.org/articles/10.3389/fneur.2020.615651/fullhead impulse testlearning curvevertigoemergency departmentvideo head impulse test (vHIT) |
| spellingShingle | Athanasia Korda Thomas C. Sauter Marco Domenico Caversaccio Georgios Mantokoudis Quantifying a Learning Curve for Video Head Impulse Test: Pitfalls and Pearls Frontiers in Neurology head impulse test learning curve vertigo emergency department video head impulse test (vHIT) |
| title | Quantifying a Learning Curve for Video Head Impulse Test: Pitfalls and Pearls |
| title_full | Quantifying a Learning Curve for Video Head Impulse Test: Pitfalls and Pearls |
| title_fullStr | Quantifying a Learning Curve for Video Head Impulse Test: Pitfalls and Pearls |
| title_full_unstemmed | Quantifying a Learning Curve for Video Head Impulse Test: Pitfalls and Pearls |
| title_short | Quantifying a Learning Curve for Video Head Impulse Test: Pitfalls and Pearls |
| title_sort | quantifying a learning curve for video head impulse test pitfalls and pearls |
| topic | head impulse test learning curve vertigo emergency department video head impulse test (vHIT) |
| url | https://www.frontiersin.org/articles/10.3389/fneur.2020.615651/full |
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