• Anesthesia progress · Jan 1999

    Randomized Controlled Trial Comparative Study Clinical Trial

    The effect of a new type of video glasses on the perceived intensity of pain and unpleasantness evoked by a cold pressor test.

    • B Bentsen, P Svensson, and A Wenzel.
    • University of Aarhus Denmark, Royal Dental College, Department of Oral Radiology, Vennelyst Boulevard 8, DK-8000 Arhus C, Denmark. bbentsen@odont.au.dk
    • Anesth Prog. 1999 Jan 1;46(4):113-7.

    AbstractThe aim of the study was to evaluate whether distraction induced by a new generation of video glasses (I-Glasses, Virtual i-O, Seattle, WA) has an effect on the perceived intensity of pain and unpleasantness. The effects of three-dimensional video, two-dimensional video, and no video glasses (control) were compared in two groups of healthy volunteers (13 males and 11 females) in a randomized, controlled trial. A cold pressor stimulus (1-2 degrees C chilled water) was used to induce experimental pain, and the volunteers rated the intensity of pain and unpleasantness on 100-mm visual analogue scales. The ratings were statistically compared using the Wilcoxon signed-rank test. Between the groups (males and females), there was a significant difference (P < .01) in the rating of unpleasantness in the three-dimensional video condition, while there were no significant differences between the genders in the other conditions (two-dimensional, control). Three-dimensional video provided a significant reduction in both pain and unpleasantness (P < .01) compared with the control condition in the male group. However, in the female group, there was a significant reduction in unpleasantness with two-dimensional video compared with the control (P < .05). This suggests that the use of distraction by means of video glasses is able to reduce the perceived intensity of pain and unpleasantness.

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