Skip to main page content
U.S. flag

An official website of the United States government

Dot gov

The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before sharing sensitive information, make sure you’re on a federal government site.

Https

The site is secure.
The https:// ensures that you are connecting to the official website and that any information you provide is encrypted and transmitted securely.

Access keys NCBI Homepage MyNCBI Homepage Main Content Main Navigation
Randomized Controlled Trial
. 2017 Mar;96(11):e6355.
doi: 10.1097/MD.0000000000006355.

A randomized comparison of video demonstration versus hands-on training of medical students for vacuum delivery using Objective Structured Assessment of Technical Skills (OSATS)

Ziad Hilal  1 , Anne K Kumpernatz, Günther A Rezniczek, Cem Cetin, Eva-Katrin Tempfer-Bentz, Clemens B Tempfer
Affiliations
Randomized Controlled Trial

A randomized comparison of video demonstration versus hands-on training of medical students for vacuum delivery using Objective Structured Assessment of Technical Skills (OSATS)

Ziad Hilal et al. Medicine (Baltimore). 2017 Mar.

Abstract

Background: To compare medical students' skills for vaginal operative delivery by vacuum extraction (VE) after hands-on training versus video demonstration.

Methods: We randomized medical students to an expert demonstration (group 1) or a hands-on (group 2) training using a standardized VE algorithm on a pelvic training model. Students were tested with a 40-item Objective Structured Assessment of Technical Skills (OSATS) scoring system after training and 4 days later. OSATS scores were the primary outcome. Performance time, self-assessment, confidence, and global rating scale were secondary outcomes. We assessed the constructive validity of OSATS in this VE model comparing metric scores of experts and students.

Results: In all, 137 students were randomized. OSATS scores were higher in group 2 (n = 63) compared with group 1 (n = 74) (32.89 ± 6.39 vs 27.51 ± 10.27, respectively; P < 0.0001). Global rating scale (1.49 ± 0.76 vs 2.33 ± 0.94, respectively; P < 0.0001), confidence (2.22 ± 0.75 vs 3.26 ± 0.94, respectively; P = 0.04), self-assessment (2.03 ± 0.62 vs 2.51 ± 0.77, respectively; P < 0.0001), and performance time (38.81 ± 11.58 seconds vs 47.23 ± 17.35 seconds, respectively; P = 0.001) also favored group 2. After 4 days, this effect persisted with OSATS scores still being significantly higher in group 2 (30.00 ± 6.50 vs 25.59 ± 6.09, respectively; P = 0.001). The assessed OSATS scores showed constructive validity. In a multiple linear regression analysis, group assignment independently influenced OSATS scores, whereas sex, handedness, sports activities, and type of curriculum were not independently associated with OSATS scores.

Conclusions: Hands-on training is superior to video demonstration for teaching VE on a pelvic model.

PubMed Disclaimer

Conflict of interest statement

The authors declare no conflict of interest.

Figures

Figure 1
Figure 1
Consort diagram of the students flow through the study.
Figure 2
Figure 2
Box plots with Objective Structured Assessment of Technical Skills (OSATS) scores in group 1 (demonstration) and group 2 (hands-on training), with the boxes representing 50% of cases and the whiskers representing 1.5× the interquartile range. Circles represent outliers.
See this image and copyright information in PMC

References

    1. Popowski T, Porcher R, Fort J, et al. Influence of ultrasound determination of fetal head position on mode of delivery: a pragmatic randomized trial. Ultrasound Obstet Gynecol 2015;46:520–5. - PubMed
    1. Williams MC, Knuppel RA, O’Brien WF, et al. A randomized comparison of assisted vaginal delivery by obstetric forceps and polyethylene vacuum cup. Obstet Gynecol 1991;78:789–94. - PubMed
    1. O’Mahony F, Hofmeyr GJ, Menon V. Choice of instruments for assisted vaginal delivery. Cochrane Database Syst Rev 2010;CD005455. - PubMed
    1. Ismail NA, Saharan WS, Zaleha MA, et al. Kiwi Omnicup versus Malmstrom metal cup in vacuum assisted delivery: a randomized comparative trial. J Obstet Gynaecol Res 2008;34:350–3. - PubMed
    1. Kuit JA, Eppinga HG, Wallenburg HC, et al. A randomized comparison of vacuum extraction delivery with a rigid and a pliable cup. Obstet Gynecol 1993;82:280–4. - PubMed

Publication types