Introduction
Pain during labour is an individual experience.1 The way
pain is experienced by the parturient includes physiological
and psychosocial processes2 that depend on prepartum and
intrapartum factors.3 These include physical, psychological
(fear, anxiety, confidence), prenatal education, parity, the
position adopted by the woman, genetic and clinical factors,
the mother's level of education, socioeconomic and cultural
level, and the model of care during childbirth (e.g. presence
of a caregiver).4 Although pain during labour is a natural and
physiological condition, it can affect the well-being and
health of the woman and the foetus, the woman's emotional
relationship with the new-born, as well as her prospects for
future births.5
National and international guidelines on the positive birth
experience or respected motherhood advocate that pain
relief is crucial to the provision of quality care. The World
Health Organization6 states that pain relief should be based
on scientific evidence and made available in a timely manner,
according to the woman's choices, its culture and its needs.
In this context, non-pharmacological pain relief strategies
that do not entail the risk of adverse effects of
pharmacological strategies such as increased duration of
labour and the need for instrumental deliveries, are
highlighted.1,7 These strategies have the potential to reduce
the side effects of epidural analgesia, increase the rate of
adherence to breastfeeding, increase shared decision-
making and control over labour, facilitate interaction with
professionals, and ultimately increase the satisfaction of the
parturient woman and its family. 8-9
Among the non-pharmacological strategies for pain relief
during childbirth, virtual reality (VR) stands out as a non-
invasive method, presenting several benefits (increased
satisfaction and decreased pain, duration of labour and
anxiety), being effective and easy to use.4,10-11 Musters et al.12
consider that there has been an increase in scientific
evidence that VR is effective in reducing pain during
childbirth, and that its use may contribute to reducing the
use of pharmacological pain control methods and,
concomitantly, the side effects associated with them.
VR is a new technology that uses computers and other
devices, which allows the parturient to experience a sense of
presence in an immersive three-dimensional and interactive
environment, which contributes to reducing the perception
of pain, diverting attention away from the real world.13 This
abstraction and sensory experience can also be used
simultaneously with other techniques, which is an advantage
that should be taken into consideration. 14
Pain perception is (in part) related to the attention paid to
painful stimuli15 and distraction techniques take the
attention away from a noxious stimulus, requiring limited
attention from the user. Although distraction through
watching movies, listening to music, and having non-clinical
conversations has become more common during medical
procedures, VR systems may provide a more effective
alternative. Distraction may be a very promising analgesia
technique that can be used safely and effectively for the
reduction of pain and discomfort during medical
procedures.16 In recent years, several researches have
explored the effectiveness of immersive VR distraction in
reducing pain related to different medical procedures and
also labour. 15
Some of the most recent distraction techniques use
advanced audio-visual technology, which combines visual
and auditory stimuli in two- or three-dimensional videos.
These techniques are called audiovisual VR systems, goggle
systems or simply audio visual distraction and do not use
kinetic stimuli. VR uses sophisticated equipment such as 3-
D monitors (Head Mounted Displays) placed on the head,
which have a large field of view, and motion detection
systems which allow users to interact with the virtual
environment. There is a multiplicity of features and
components that can be added to or removed from the
equipment, which translates into the costs involved for its
use.17
The use of VR as an analgesia technique offers more
immersive images due to occluding headsets that project the
images right in front of the user's eyes and, depending on
the model used, block real-world stimuli (visual, auditory or
both).16 McCaffery and Pasero17 have designated this
phenomenon as sensory shielding. In the latter, the user is
protected from pain by the distraction resulting from
immersion, which is particularly increased in VR through
the use of Head Mounted Displays that direct the focus of
attention to what is happening in the virtual world.16
In the first phase of labour, VR is of particular interest due
to its non-invasive nature, its contribution to pain relief and
the absence of significant side effects.11
In the studies conducted by Baradwan et al.4, Akin et al.1, and
Carus et al.18, the benefits of VR were highlighted as being:
the reduction in the perception of pain in parturients, the
decrease in anxiety levels, the increase in the satisfaction of
women and significant others, the absence of adverse
effects, as well as the decreased risk of complications for the
foetus and postpartum disorders for women. In this context,
it is also important to mention the qualitative study
conducted by Wong et al.19, in which the perceptions of
parturients during the use of virtual reality were analysed and
in which they concluded that women felt calmer and more
relaxed, with decreased levels of anxiety and more focused
on breathing. This study also showed significant
improvements in self-efficacy through the use of VR.
Health professionals, with their knowledge and skills,
remain the most important factor in promoting a labour that
meets women's expectations20, ensuring a safe environment,
designing, implementing and assessing interventions for
pain prevention and control.21-22 During pregnancy and
childbirth, pain relief stands out in the professional practice
of obstetric nurses and is based not only on medical reasons,
but also on human reasons.23
The sharing of knowledge for the innovation of nursing
care, strategies and interventions is essential, as well as the
acquisition of resources and the training of professionals to
provide safe, accessible and effective alternatives24 for the
relief of pain in parturients.25 The implementation of VR in
the first stage of labour requires obtaining information on
the preferences of parturients and how they perceive pain.12
In prenatal care, these aspects can be clarified and the