Treatment for pediatric cancer and blood disorders can range from several months to several years. During the course of treatment, children often undergo several painful and/or frightening procedures. Common unsedated procedures include needle access of an implanted central venous port (i.e., "port access") prior to receiving chemotherapy; intravenous needle sticks to provide chronic transfusion therapy or treatment for iron overload in patients with sickle cell disease; and weekly changing of the bandage (dressing) around a peripherally inserted central catheter (PICC). These procedures are often distressing to a pediatric patient. As a result, there is an emphasis on the use of non-pharmacologic interventions to manage symptoms of patient pain and anxiety for procedures that do not warrant pharmacologic intervention. There is also ample evidence to suggest that parental coping is associated with child distress, which highlights the need for interventions that have the potential to decrease parental, as well as patient, distress. Interventions that are cost-effective and sustainable are most appealing in the current healthcare environment.
Non-immersive distraction, such as guided imagery, is widely regarded as useful in decreasing pain and anxiety during procedures. Guided imagery is a cognitive strategy that typically involves a staff member describing in detail a situation that is incompatible with the experience of pain and is meant to invoke feelings of calm. It is a commonly used intervention to address procedural distress and, aside from staff time, is free of cost. However, that the more distracting the stimuli, the greater the expenditure of cognitive energy, and the greater reduction in one's capacity to process pain and feel distressed. This leads one to question whether VR, an immersive, interactive technology that can realistically project three-dimensional images, may be more effective than a non-immersive distraction in managing procedure-related pain and distress. VR has been used to assist with procedural distress in several contexts over the past 15 years, including pediatric pain, burn care, dental procedures, and port access. Reviews of VR usage have been generally positive, with most studies suggesting that VR is a feasible and efficacious method of distraction that can reduce patient-reported and objective physiological measures of pain and distress. Effect sizes in the medium to the large range have been found when comparing VR to standard of care and non-immersive distraction (e.g., videogames), have found that subjects using VR distraction for pain showed more improvement than approximately 83% of control subjects. Other sources have highlighted positive patient satisfaction and a low incidence of negative side effects (e.g., motion sickness) when using VR. The cost of VR equipment has decreased over the years, although VR headsets still average $300-500 with additional cost for game controllers and smartphones/game systems. For use within a hospital, the further cost would need to be incurred to reduce the risk of infection for equipment that is shared.
Using a comparative effectiveness model, this project will compare a low-cost, but widely accepted non-immersive distraction intervention (guided imagery) to a higher cost, but very promising immersive intervention (VR) in managing patient pain and anxiety, as well as parent distress. To our knowledge, this is the first time these two interventions will be directly compared. It is also the first time that parental distress will be measured as an outcome of a VR intervention. Hospital resource utilization (staff time, facility usage) will be evaluated as an additional cost/benefit aspect of the intervention.
