Virtual reality goggles as a strategy to reduce preoperative anxiety
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Updated: Nov 7, 2026

The use of Biofeedback in Clinical Virtual Reality: The INTREPID Project
Published on: November 12, 2009
M D González Castro1, D Del Cerro Rodríguez1, S Altamirano1
1Pediatric Surgery Department. Hospital Materno-Infantil Teresa Herrera, Complejo Hospitalario Universitario de A Coruña. A Coruña (Spain).
Objectives:
Preoperative anxiety in pediatric patients is frequent and can be associated with unfavorable outcomes. Virtual reality has been proposed as a non-pharmacological intervention to reduce presurgical anxiety.
Material And Methods:
A prospective, non-randomized comparative pilot study in patients aged 6 to 12 years undergoing outpatient surgery. Thirty-four children were included: exposed to an immersive virtual reality experience during transport to the surgical area (n= 17) and a control group, not exposed (n= 17). Anxiety was assessed using the modified Yale Preoperative Anxiety Scale (m-YPAS) in the holding area. Subsequently, after midazolam administration, cooperation during anesthetic induction was assessed using the Induction Compliance Checklist (ICC).
Results:
The m-YPAS score was lower in the virtual reality group compared to the control group, without reaching statistical significance (p= 0.150), with a moderate effect size (d= 0.59). No statistically significant differences were observed in cooperation during anesthetic induction assessed by the ICC scale (p= 0.413). A positive and significant correlation was observed between the m-YPAS and ICC scores (rho= 0.664; p< 0.001).
Conclusions:
The use of virtual reality showed a trend toward lower levels of preoperative anxiety in patients undergoing outpatient surgery, with a moderate effect size, although without statistically significant differences. These results support the potential utility of virtual reality as a complementary intervention and justify studies with larger sample sizes and comparative designs with other strategies.