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VR Improves Tolerance of Anaesthesia Procedures

by Colleen Fleiss on June 2, 2019 at 11:30 PM
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VR Improves Tolerance of Anaesthesia Procedures

Virtual reality sessions before and during locoregional anaesthesia for orthopaedic procedures were found to substantially reduce pain and the need for intravenous sedation, stated new research being presented at this year's Euroanaesthesia congress (the annual meeting of the European Society of Anaesthesiology) in Vienna, Austria (1-3 June).

"Given the immersive and distracting nature of the virtual reality experience, this technology has the ability to act as a preventive intervention transforming local anaesthesia into a less distressing and potentially pain-free medical procedure", says Dr Dragos Chirnoaga from CUB Erasmus Hospital, Brussels, Belgium who co-led the research. Along with many other procedures, having a local anaesthetic injection can be a stressful and painful experience, and it is often combined with intravenous sedation to help patients relax. However, the use of intravenous sedation is not without adverse effects such as headache, nausea, and drowsiness.

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In this randomised trial, researchers tested the hypothesis that VRHD could reduce the requirement for intravenous sedation by at least 50% during local anaesthesia at CUB Erasmus Hospital.

They randomised 60 adults scheduled for orthopaedic surgery (shoulder, hand or knee surgeries) with locoregional anaesthesia into three groups. In the control group (20 patients), standard intravenous sedation during locoregional procedure was administered without VHRD; in the second group (20), VRHD was used during locoregional anaesthesia, and intravenous sedation was given if patients reported pain scores of greater than 3 out of 10; in the third group (20), VRHD before and during locoregional anaesthesia was used, and intravenous sedation given if patients reported pain scores greater than 3.
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VRHD therapy consisted of wearing virtual reality goggles and headphones to watch relaxing video content of a submarine ride and life under the sea, with a calming voice guiding the journey and focused on slowing the patient's breathing rhythm.

Analyses showed that just 25% (5/20) of patients receiving VRHD during local anaesthesia required intravenous sedation, whilst only 10% (2/20) patients given VRHD both before and during locoregional anaesthesia needed further sedation.

Additionally, patients receiving VRHD showed similar comfort and satisfaction before and during the procedure as those given intravenous sedation (see table in link to abstract below). "Virtual reality hypnosis distraction is feasible, well tolerated, and liked by patients", says Dr Delphine Van Hecke from CUB Erasmus Hospital, Brussels who co-led the study. "While it is not clear exactly how virtual reality works to reduce anxiety and pain, it's thought that it creates a distraction that stops the mind feeling pain. Further studies should focus on other procedures suited for the use of VRHD, particularly its potential benefit in children as premedication or during low pain procedures."

Source: Eurekalert
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