Effect of the Application of Virtual Reality on Pain Reduction and Cerebral Blood Flow in Robot-Assisted Gait Training in Burn Patients

Twelve-month results for a randomized sham-controlled effectiveness trial of an in-home skills-based virtual reality program for chronic low back pain

Introduction

Low-risk, accessible, and long-term effective nonpharmacologic behavioral interventions for chronic low back pain (cLBP) are needed. Pain education and cognitive behavioral therapy (CBT) are recommended first-line treatments, but access is poor, treatment effectiveness is variable, and long-term effectiveness is inconsistent. In-home virtual reality (VR)-delivered therapies might address these shortcomings because therapeutic content can be delivered in a consistent and quality-controlled manner.

Objective

To determine whether a 56-session, self-administered in-home, Skills-Based VR program for cLBP (RelieVRx) yields long-term reductions in pain intensity and pain interference 12 months posttreatment in a large demographically diverse and clinically severe real-world sample.

Methods

Participants were 1,093 demographically diverse individuals with self-reported nonmalignant cLBP >3 months duration and average pain intensity and interference scores >4/10. Participants were randomized to Skills-Based VR or active Sham, and data were collected from January 31, 2022 to October 31, 2023. Pretreatment to 12-month posttreatment analyses were conducted.

Results

From baseline to 12 months posttreatment, Skills-Based VR reductions for average pain intensity (1.7 ± 2.1) and pain interference (1.9 ± 2.3) were robust and significantly greater than those found for Sham. More than half of Skills-Based VR participants reported at least a 2-point reduction in pain intensity, pain interference, or both at 12 months posttreatment.

Conclusions

A standardized, in-home Skills-Based VR therapy is effective for reducing pain intensity and pain interference, and these effects are maintained to 12 months posttreatment.

Gait Performance and Brain Activity Are Improved by Gait Automatization during Robot-Assisted Gait Training in Patients with Burns: A Prospective, Randomized, Single-Blinded Study

Background: Patients with lower extremity burn injuries have decreased gait function. Gait dysfunctions are compensated by activation of executive areas such as the prefrontal cortex (PFC). Although robot-assisted gait training (RAGT) can improve gait function, the training mechanisms of RAGT are unknown. We aimed to determine the clinical effects of RAGT in patients with burns and investigate their underlying mechanisms. Methods: This single-blind, randomized controlled trial involved 54 patients with lower extremity burns. The RAGT group underwent RAGT using SUBAR® and conventional training. The control (CON) group underwent only conventional training. The primary outcome was cortical activity measured using a functional near-infrared spectroscopy device before and after 8 weeks of training to confirm the compensatory effect of gait dysfunction. The secondary outcomes were the functional ambulation category (FAC) to evaluate gait performance, 6-min walking test (6 MWT) distance to measure gait speed, isometric force and range of motion (ROM) of lower extremities to evaluate physical function, and the visual analog scale (VAS) score to evaluate subjective pain during gait. Results: PFC activation during the gait phase in the RAGT group decreased significantly compared with that of the CON. The VAS score decreased and FAC score improved after 8 weeks of training in both groups. The 6 MWT scores, isometric strengths (the left knee flexor and bilateral ankle plantar flexors), and the ROMs (the extensions of bilateral hip and bilateral knee) of the RAGT group were significantly improved compared with those of the CON. RAGT improved gait speed, lower extremity ROMs, and lower extremity muscles strengths in patients with burns. Conclusions: The improvement in gait speed and cerebral blood flow evaluation results suggests that the automatization of gait is related to the treatment mechanism during RAGT.

Virtual reality technology reduces the pain and anxiety of children undergoing vein puncture: a meta-analysis

BACKGROUND

Pain management is an important part of nursing care for children. The objective of this study was to systematically assess the impact of virtual reality (VR) technology on alleviating the pain and anxiety experienced by children during venipuncture procedures.

METHODS

This study searched Pubmed, Web of Sciences, Scopus, The Cochrane Library, Cumulative Index of Nursing and Allied Health Literature (CINAHL), Embase, Medline, China National Knowledge Infrastructure (CNKI), Wanfang, Weipu and China biomedical databases on the randomized controlled trials (RCTs) of virtual reality technology for relieving pain and anxiety associated with venous puncture for children up to July 6, 2024. Risk of bias tool recommended by Cochrane library was used to evaluate the RCT quality. RevMan 5.3 software was used for statistical analysis.

RESULTS

A total of 10 RCTs involving 874 children were included. 429 children received VR intervention during vein puncture. VR was beneficial to reduce the children's self-reported pain scores [SMD=-0.48, 95% CI (- 0.61, - 0.35)], children's caregivers reported needle-related pain level [SMD=-0.93, 95% CI (-1.45, - 0.42)], children's self-reported anxiety scores [SMD=-0.45, 95% CI (- 0.65, - 0.25)], children's caregivers reported needle-related anxiety level [SMD=-0.47, 95% CI (- 0.73, - 0.21)]. Egger regression tests indicated that there were no publication biases in the synthesized outcomes (all P > 0.05).

CONCLUSIONS

VR technology has been shown to effectively mitigate the pain and anxiety experienced by children during venipuncture. Despite the positive findings, more research is needed to better understand the role of VR in children undergoing venipuncture.

iVR-fNIRS: studying brain functions in a fully immersive virtual environment

Immersive virtual reality (iVR) employs head-mounted displays or cave-like environments to create a sensory-rich virtual experience that simulates the physical presence of a user in a digital space. The technology holds immense promise in neuroscience research and therapy. In particular, virtual reality (VR) technologies facilitate the development of diverse tasks and scenarios closely mirroring real-life situations to stimulate the brain within a controlled and secure setting. It also offers a cost-effective solution in providing a similar sense of interaction to users when conventional stimulation methods are limited or unfeasible. Although combining iVR with traditional brain imaging techniques may be difficult due to signal interference or instrumental issues, recent work has proposed the use of functional near infrared spectroscopy (fNIRS) in conjunction with iVR for versatile brain stimulation paradigms and flexible examination of brain responses. We present a comprehensive review of current research studies employing an iVR-fNIRS setup, covering device types, stimulation approaches, data analysis methods, and major scientific findings. The literature demonstrates a high potential for iVR-fNIRS to explore various types of cognitive, behavioral, and motor functions in a fully immersive VR (iVR) environment. Such studies should set a foundation for adaptive iVR programs for both training (e.g., in novel environments) and clinical therapeutics (e.g., pain, motor and sensory disorders and other psychiatric conditions).

Global Scientific Trends in Virtual Reality for Pain Treatment From 2000 to 2022: Bibliometric Analysis

Background

Virtual reality (VR) is a computer simulation technique that has been increasingly applied in pain management over the past 2 decades.

Objective

In this study, we used bibliometrics to explore the literature on VR and pain control, with the aim of identifying research progress and predicting future research hot spots.

Methods

We extracted literature on VR and pain control published between 2000 and 2022 from the Web of Science Core Collections and conducted bibliometric analyses. We analyzed the publication and citation trends in the past 2 decades, as well as publication and citation analyses of different countries, institutions, journals, and authors. For references, we conducted cocitation and burst analyses. For keywords, we conducted co-occurrence, clustering, timeline view, and citation burst analyses.

Results

Based on 1176 publications, we found that there was a continuous increase in publication and citation volumes, especially in the last 5 years. The United States was the most representative country, and the University of Washington was the most representative institution, with both having the most publications and citations. The most popular journal in this field was Burns, and Hoffman HG was the most productive author, leading many studies on patients with burn pain. The reference with the most citation burst was a study on the verification of new hardware in pain control. The keywords with the highest citation bursts related to various situations of pain such as "burn pain," "wound care," "low back pain," and "phantom limb."

Conclusions

VR has been applied in various clinical situations for pain management, among which burns and pediatric surgery have achieved satisfactory results. We infer that VR will be extended to more clinical pain situations in the future, such as pain control in wound care, low back pain, and phantom limb pain. New research hot spots will include the development of software and hardware to improve the immersive experience of VR for pain control. However, our work was based solely on English literature from the Web of Science database. For future studies, we recommend that researchers explore literature from multiple databases to enhance the scope of their research.

A Systematic Review of the Effectiveness of Virtual Reality-Based Interventions on Pain and Range of Joint Movement Associated with Burn Injuries

Background: Burns are mild or severe lesions produced in living tissue, due to the action of different agents. This pathology is considered the third cause of accidental death in the world by the World Health Organization. Among the most disabling sequelae in these patients, pain and range of motion have the greatest impact. A recommended tool to complement the treatment or management of the symptoms associated with burns is virtual reality. Objective: The objective of this study was to analyse the effectiveness of virtual-reality therapy for pain relief and the improvement of the range of joint movement in patients who have suffered burns. Methodology: This study is a systematic review conducted following the PRISMA statements. An electronic literature search was performed in the following databases: PubMed, Cochrane, Dialnet, Scopus and Science Direct. The inclusion criteria were: participants with burns in any part of the body, interventions with virtual reality with or without complementary treatment, studies in both Spanish and English, and outcome measures of pain and range of motion. Results: Finally, 10 studies were included in the review. The sample consisted of one pilot study, three randomized controlled clinical trials, one prospective randomized controlled clinical trial, one control group and treatment group trial, one interventional clinical trial and three comparative studies. The most commonly used assessment tools for pain were the graphic rating scale (GRS) and for range of motion the goniometer. The use of virtual-reality games significantly reduced pain scores during physiotherapy and occupational therapy treatments as well as in nursing care. The range of motion improved significantly during virtual-reality exercises performed during a physiotherapy treatment in 33% of studies included in this review. Conclusion: The results of the studies analysed in this systematic review suggest that the use of virtual reality for the management of pain and range of movement limitations associated with burn injuries could control these symptoms and decrease their negative consequences on the person.