Factors Influencing Virtual Reality as a Distraction Tool for Venipuncture in Children: Observational Pilot Feasibility Study

Abstract

Background: Virtual reality (VR) is increasingly used as a distraction tool for painful procedures in children. Studies have shown variable benefit but have not identified factors to maximize utility.

Objective: This study aimed to undertake a feasibility study to investigate factors influencing virtual reality headset (VRH) utility for venipuncture and cannulation.

Methods: Children admitted as inpatients were recruited and given a VRH during anticipated venipuncture or cannulation. Feedback from participants, parents, and operators was obtained through questionnaires and the Wong-Baker Faces Scale (WBFS).

Results: Thirteen children of a target 32 (41%), aged a median of 7 (range 5-12) years, were recruited to the study; 9 (69%) parents and 7 (54%) participants reported a positive VR experience, found VRH comfortable, and wanted repeat application for future venisection or cannulation. However, patient recruitment was suboptimal at 41% (binomial 95% CI 24%-59%) of the target, as busy operators undertaking venisection or cannulation on eligible patients were unable to spare time for VRH use during the COVID-19 pandemic. The preprocedure time spent with VRH was associated with participants' positive experience of VR distraction (median 15, IQR 2.5-50 vs 180, IQR 120-450) seconds (P=.02). Five (38.4%) participants removed the VRH prior to procedure; these were relatively young compared to those who continued VRH (median 6, IQR 5.00-7.00 vs 10, IQR 6.75-12.00 years), suggesting better acceptance of VR in older children. There was no significant difference in WBFS pain ratings before (median 0, IQR 0-10) or after the procedure (median 0, IQR 0-6), with many children choosing 0 ("no hurt") at initial assessment. By contrast, parent and doctor or phlebotomist responses indicated that VR reduced pain and anxiety (n=9, 69%), in agreement with participant perception (n=7, 54%; Cohen κ=0.68).

Conclusions: VR as a distraction tool in children is influenced by age and preprocedure familiarity, suggesting that the optimal use is in older children with greater cognitive and emotional maturity. Multidimensional feedback from participants, parents, and investigators should be obtained to test the true efficacy of VR in future studies.

Keywords: VR; VR headset; cannulation; children; computer-generated simulations; digital environments; digital worlds; head-mounted display; inpatients; pain; pediatric care; phlebotomy; questionnaires; simulations; venipuncture; virtual environments; virtual reality; virtual tour.