Clinical Trial Details
— Status: Recruiting
Administrative data
NCT number |
NCT05149677 |
Other study ID # |
CREC MN178 20/21 |
Secondary ID |
|
Status |
Recruiting |
Phase |
N/A
|
First received |
|
Last updated |
|
Start date |
January 2022 |
Est. completion date |
October 2022 |
Study information
Verified date |
October 2021 |
Source |
The University of The West Indies |
Contact |
n/a |
Is FDA regulated |
No |
Health authority |
|
Study type |
Interventional
|
Clinical Trial Summary
Labour pain is the result of complex and subjective interactions of multiple physiologic and
psychosocial factors on a woman's interpretation of labour stimuli. It is an integral part of
the labour process, often associated with anxiety and being subjective, affects each woman's
experience of the birthing process in differing ways.
This will be a randomized clinical trial, involving primiparous women presenting to the
University Hospital of the West Indies (UHWI) for labour and delivery. Primiparous, term
women in labour will be eligible and randomized in a 1:1 ratio to receive music plus standard
of care during labour and standard care without music therapy.
The primary outcome of this study will be to determine whether music therapy is an effective
adjunct or alternative to pharmacological therapies for pain and anxiety management in
labour. The secondary outcome would be to assess the effect of music on labour duration,
operative delivery rates, abnormal foetal heart rate patterns and APGAR scores. Approximately
260 primigravida women would be recruited and invited to participate in this randomized
clinical trial over an eight-month period.
Description:
The Cambridge dictionary describes pain as a feeling of physical suffering caused by injury
and illnesses. This physical suffering is a subjective, natural, and inevitable process
associated with labour that is understandably, a most feared aspect of pregnancy for
expectant mothers. A woman's birthing experience is influenced by her social environment and
how she contextualizes the idea of pain as purposeful and productive versus threatening, the
latter of which could result in a more negative pain response. Historically prior to the 18th
century, natural methods were the only options for pain relief for women in labour. These
included various breathing techniques and positioning, massage techniques and herbal
mixtures. There is an increasing movement back to the historical practices of traditional and
non- pharmacological pain relief during labour, and research in these techniques is needed to
prove clinical effectiveness. According to the World Health Organisation (WHO)
recommendations: intrapartum care for a positive childbirth experience- " Most women desire
some form of pain relief during labour, and qualitative evidence indicates that relaxation
techniques can reduce labour discomfort, relieve pain and enhance the maternal birth
experience."
One of the most used pharmacological agents during labour is meperidine hydrochloride
(Pethidine®) as it is readily available with a higher level of administrator comfort than
other agents. Overuse of pharmacological interventions can lead to increased maternal and
neonatal morbidity, reduced local supply of pharmacological agents and even financial strain
on low resource institutions. Patients with a low pain threshold in early labour due to
anxiety and fear may also request analgesia in the latent phase which can result in the
inability to receive repeated doses early in the active phase due to dosing frequency
guidelines. This can then result in maternal distress and poor labour outcomes when the
additive effect of labour progression, results in more severe pain. Meperidine hydrochloride
has been shown to offer variable pain control with a more sedation than analgesic effect,
hence adjunctive therapy with music may prove beneficial for its potential additive analgesic
effect. Meperidine hydrochloride's use has also been found to be associated with increased
rate of augmentation in labour, increased operative deliveries, and adverse maternal effects
such as nausea, vomiting and dizziness and also a linkage to neonatal respiratory depression
& APGAR scores < 7 and acidosis [umbilical artery potential of Hydrogen (pH) <7.12] have been
noted.
The United Nation (UN) Global Strategy for Women's, Children's and Adolescents' Health seeks
to ensure that not only do women survive childbirth complications if they arise, but also
that they thrive and reach their full potential for health and life. To facilitate safe
labour and childbirth, attention must be given to the management of the psychological and
emotional needs of women. Anxiety of the labour process is frequently seen in mothers
presenting for delivery. This is shown to be more common in primiparous women especially if
they have not received antenatal counselling on what to expect in labour(9). Studies have
shown that anxiety can stimulate the sympathetic nervous system, releasing excessive stress
hormones such as cortisol and adrenaline contributing to dysfunctional uterine contractility
and labour dystocia. Music therapy has been shown to be an effective, inexpensive, safe and
non-invasive intervention for patients undergoing many non-obstetric procedures such as
decreased pain and anxiety during bone marrow biopsy and aspiration and nasal bone fracture
reduction as well as decreased anxiety and propofol (Diprivan®) consumption during
colonoscopy/endoscopy.
With more women exploring the option of physiological birthing techniques ("Natural Birthing
Techniques"), an approach to labour and birth that normalizes the strength and physiology of
the woman and foetus and refrains from external intervention unless there is potential
compromise to mother or foetus, music therapy may offer a natural alternative to
pharmacological approaches to pain relief that are the standard of care in may labour and
delivery suites.
Music can have a direct impact on the perception of pain by activating the gate-control
theory of pain which attacks both cognitive and physiological factors associated with pain.
The gate theory works on the idea that there is a gateway in the dorsal horn of the spinal
cord that manages the perception of pain via opening and closing of this gate. Pain sensation
is carried via small neural fibres that pass this gate in route to the brain for
interpretation. Music can close this gateway by stimulating a large number of neurological
fibres some of which would have been activated for a pain response if available, and hence no
transmission of pain sensation in response to stimulation. Music can also serve as a
distraction mechanism improving general mood and hence decreasing negative pain perception.
Music during labour is perceived by the right hemisphere of the brain and can result in the
release of endorphins which provide analgesia by binding to opioid receptors at pre and post
synaptic nerve terminals. This binding results in the inhibition of substance P an important
protein involved in the transmission of pain. Studies show that decreased levels of serum
cortisol and the release of neural system of reward hormones such as dopamine is linked to
the anxiety reducing effect of music therapy.
In a study performed by Buglione et al., pain level during active phase of labour was 8.8 ±
0.9 in music group and, 9.8 ± 0.3 in control group [Mean Difference (MD) - 1.00 point, 95%,
Chloride (Cl) - 1.48 to - 0.52; P <0.01]. Music during labour and delivery was also
associated with decreased pain 1h postpartum as well as decreased anxiety levels during the
active phase, second stage and 1hour postpartum. This study was however studied in a small
population of 30 Italian women; hence generalizability of findings is uncertain. A
meta-analysis and systematic review of studies published between 2003 and June 2018 showed
significant differences in Visual Analog pain scale (VAS) scores in favour of music therapy
in the intensity of latent phase of labour pain (MD: -0.73; 95% Cl -0.99, -0.48); in the
active phase (MD: -0.68; 95% Cl -0.92, -0.44) in its entirety or during the first phase (MD:
-1.71; 95% Cl -2.65, -0.77) and second hour postintervention (MD: -2.90; 95% Cl -3.79,
-2.01). In terms of anxiety, Santiváñez-Acosta et al evaluated three studies which revealed
significant differences in anxiety level in the latent phase (MD: -0.74; 95% Cl -1.00, -0.48)
and active phase of labour (MD: -0.76; 95% Cl -0.88, -0.64).