Auricular Acupressure Can Modulate Pain Threshold

Enhancing treatment of lumbar disc herniation with Erxian decoction and auricular acupoint pressure: A randomized controlled trial

OBJECTIVE

The incidence of lumbar disc herniation (LDH) is on the rise annually, with an emerging trend of affecting younger age groups. This study aims to investigate the clinical effectiveness of combining Erxian decoction with auricular acupoint pressure therapy in treating LDH. Our objective is to furnish evidence supporting the incorporation of traditional Chinese medicine (TCM) rehabilitation techniques in clinical settings.

METHODS

This randomized controlled trial enrolled 102 patients diagnosed with LDH and allocated them into Control and Intervention groups. The Control group underwent a 2-week rehabilitation regimen, whereas the Intervention group received an augmented treatment comprising Erxian decoction along with auricular acupoint pressure therapy based on the Control group. Main outcome measures included 3 scales - visual analog scale (VAS), Japanese Orthopedic Association (JOA), and Oswestry Disability Index - as well as 3 inflammatory markers: C-reactive protein (CRP), interleukin-6 (IL-6), and tumor necrosis factor-α (TNF-α). Additionally, pressure pain threshold and pain tolerance threshold values were evaluated. Participants were assessed at baseline, on 14-day, and on 28-day posttreatment.

RESULTS

After 2 weeks of treatment, both the Control and Intervention groups exhibited significant improvements in the VAS, JOA, ODI, CRP, IL-6, TNF-α, pressure pain threshold, and pain tolerance threshold (P < .05). These improvements persisted at the 28-day in the VAS, JOA, and ODI scores (P < .05). On 14-day, the Intervention group showed significantly better outcomes compared to the Control group in terms of the VAS, JOA, ODI, CRP, TNF-α, and pressure pain threshold (P < .05).

CONCLUSION

Compared to conventional rehabilitation therapy, the combination of Erxian decoction and auricular acupoint pressure therapy demonstrates clear benefits in alleviating symptoms in patients with LDH. This approach offers fresh perspectives and substantiates evidence for future treatment strategies in managing LDH.

Effects of Multi-Mechanism Complementary Therapy on Pain and Anxiety During Labor Latency in Primiparous Women

Objective: Evaluate the efficacy of single and mixed complementary therapies, with different analgesic mechanisms, in relieving pain and anxiety during the late labor period. Design and method: In this study, 145 primiparous women with 2-3 cm dilation of the cervix were randomly assigned to one of five groups: control group (psychological comfort), comprehensive group, aroma group, auricular acupuncture group, and music group. The groups were distributed equally (1:1:1:1 ratio), and pain and anxiety scores were assessed at 30, 60, and 120 minutes post-intervention in each group. Outcomes and measures: Compared to the control group, all intervention groups showed lower pain scores. The comprehensive group had the largest reduction in pain scores at 30, 60, and 120 minutes post-intervention. The auricular point, aroma, and music groups also demonstrated significant reductions in pain scores at different time points. Only the comprehensive group had a statistically significant reduction in anxiety at 30 minutes post-intervention compared to the control group. However, at 60 and 120 minutes post-intervention, all intervention groups showed lower anxiety scores compared to the control group. Conclusion: The optimal effects of each therapy varied in terms of timing and duration. Combination therapy showed a greater effect size than single complementary therapy.

Comparing the Effect of Premature Infant Care Training and Performing Auriculotherapy Techniques on Anxiety, General Self-Efficacy and Breastfeeding Self-Efficacy of Mothers with Premature Infants

Background

A preterm birth exposes the mother to many challenges in caring for and supporting the baby. This study aims to use training and auriculotherapy techniques as two simple methods to reduce anxiety and increase the mother's self-efficacy.

Materials and Methods

This single-blind three-group clinical trial study was conducted in the Bahar Hospital in Shahroud, Iran, in 2019. The target group of primiparous mothers was premature infants. For the first group, premature infant care training was provided, and for the second group, auriculotherapy techniques were performed, and the third group (the control group) received routine care. Anxiety, general self-efficacy, and maternal breastfeeding self-efficacy were measured at the beginning of the study and before neonatal discharge.

Results

Before the intervention, three groups were not significantly different in demographic characteristics, obvious and hidden anxiety scores, and general self-efficacy and lactation (p > 0.05). There was a significant difference between the control group and the two intervention groups with ANOVA test for self-efficacy (F2,87 = 6.60, p = 0.002), breastfeeding self-efficacy (F2,87 = 15.20, p < 0.001), obvious anxiety (F2,87 = 56.20, p < 0.001), hidden anxiety (F2.87 = 62.90, p < 0.001), after the intervention. In addition, there was no significant difference in the length of hospital stay in the neonatal intensive care unit (p = 0.732). Still, the neonate's infant's mean weight before discharge in the two intervention groups was significantly different from the control group (p = 0.034).

Conclusions

Teaching mothers how to care for premature infants and implement auriculotherapy techniques reduces anxiety and increases mothers' general self-efficacy and breastfeeding.

Effects of auricular acupressure on sleep and pain in elderly people who have osteoarthritis and live in nursing homes: A randomized, single-blind, placebo-controlled trial

OBJECTIVE

This study aimed to examine the effects of auricular acupressure (AA) on sleep and pain among elderly people with osteoarthritis who live in nursing homes.

METHOD

It was a randomized, single-blinded, and placebo-controlled comparative pretest-posttest study that applied AA for eight weeks. The study was conducted among 52 elderly people, comprising an experimental group (n=26), and a control group (n=26). Polysomnography, actigraphy, the levels of melatonin and pressure pain threshold (PPT) were measured. The standardized measurement on sleep quality and pain was also used.

RESULTS

Experimental group scores on sleep quality significantly improved as compared to those of the placebo control group. The polysomnography (sleep efficiency, sleep latency, awakening, stage 2 sleep) and the actigraphy (sleep efficiency, sleep latency, number of awakenings) were shown to be significant. The levels of melatonin significantly increased after terminating the intervention. The result of the pain (visual analogue scale) significantly reduced and the PPT significantly increased among the elderly in the experimental groups.

CONCLUSIONS

AA can be used as an effective intervention to improve their sleep of the elderly living in nursing homes, and it can also reduce the pain.

Effectiveness of auricular point acupressure with magnetic plate for pain management in acute postpartum cesarean section patients in Thammasat University Hospital: a randomized clinical controlled trial

OBJECTIVE

To compare the effectiveness of auricular acupressure with or without magnetic plates to routine post cesarean pain management.

METHODS

This randomized controlled trial was conducted at Obstetrics and Gynecology Department, Thammasat University Hospital, between January and June 2020. All participants were term primigravida pregnant women who underwent cesarean delivery during the study period. Participants were divided into three groups, namely control, placebo and study groups. Study (magnetic application) and placebo (non-magnetic application) groups received magnetic and non-magnetic auricular patches at both pinnas, respectively. Randomized assignments for each group were computer-generated, printed and kept in opaque sealed envelopes. The points in this study were Shenmen (TF4), Erzhong (HX1) and Penqiang (TF5). Visual analog scale (VAS) was immediately recorded up to 72 h after the operation.

RESULTS

A total of 195 cases were enrolled during the period of study. Each group had 65 participants. The mean participant's age was 31 years old. Demographic and clinical characters among the three groups were comparable. Pain scores within 12 h postoperative period of all three groups were comparable. Between 36 and 72 h post-operation, study groups had significantly lower VAS than the control group. One-quarter of participants had comparable nausea and vomiting side effects.

CONCLUSIONS

Auricular acupressure at Shenmen (TF4), Penqiang (TF5) and Erzhong (HX1) with magnetic plate attachment could significantly relieve post cesarean pain between 18 and 72 h.

Effect of Auricular Acupressure on Acute Pain in Nursing Home Residents with Mild Dementia: A Single-Blind, Randomized, Sham-Controlled Study

Introduction

Acute pain is a prevalent problem for dementia residents in nursing homes. A variety of intervention strategies have been applied to address this problem. However, there remains an issue of inadequate pain control. This study aims to explore the analgesic efficacy of auricular acupressure (AA) for dementia residents with acute pain in nursing homes.

Methods

A multicenter, single-blind, randomized, and sham-controlled clinical trial was performed in three nursing homes in Yinchuan, China. All of the 206 eligible patients with acute pain were randomly divided into two groups for real AA therapy or sham AA (at sham point stimulation) therapy. The primary outcome was measured with a face pain scale revised (FPS-R) score before the procedure, 5 min after the start of the intervention, and 5 min after finishing the procedure. Secondary outcomes covered three physiological parameters, adverse reactions observed, satisfaction level of caregivers, acceptance of patients, and additional use of analgesics.

Results

There was a significant difference in pain scores based on FPS-R between the two groups (p < 0.01). Pain score in the true AA group was 1.84 ± 0.23, compared with 2.22 ± 0.81 in the sham AA group. No adverse events were found during the whole procedure for all patients. The satisfaction level of caregivers and acceptance of patients in the real AA group were significantly higher than those in the sham AA group.

Conclusion

This study shows that real AA was an alternative analgesic modality in reducing acute pain in patients with mild dementia.

The Effect of Auricular Acupressure for Chronic Low Back Pain in Elders: A Randomized Controlled Study

Chronic low back pain (CLBP) is a major problem throughout the world and getting worse because of population increase and aging. The cost of treatment increases as the population of people with CLBP increases. This study aimed to examine the effect of auricular acupressure (AA) on pain and disability in elders with chronic low back pain. The randomized, single-blinded, and placebo-controlled study was conducted on 51 elders with CLBP in South Korea from June 2019 to August 2019. The experimental group (n = 26) received AA on low back pain-related points, whereas the placebo control group (n = 25) received AA on points unrelated to low back pain. Participants received 6 weeks of AA in weekly cycles. Collected data were analyzed using IBM SPSS Statistics, version 25. Statistically significant differences between the 2 groups emerged in the visual analog scale (P < .001), pain threshold (P < .001), and Oswestry Disability Index (P < .001). This study showed that 6 weeks of AA improved CLBP and pain-related disability. Therefore, AA can be used as a noninvasive and self-managed alternative intervention for CLBP in older adults.

Efeitos da auriculoterapia com sementes de mostarda na dor lombar crônica de profissionais de enfermagem

RESUMO Mais de 60% dos trabalhadores de enfermagem apresentam episódio de lombalgia durante um ano, provocando um impacto socioeconômico negativo, uma vez que é uma das maiores causas de faltas e afastamentos do trabalho. A auriculoterapia é uma técnica da acupuntura de baixo custo e não invasiva, que utiliza o pavilhão auricular como um microssistema do organismo humano mapeado por pontos que, estimulados, podem tratar diversas enfermidades. Sendo assim, o objetivo deste estudo foi verificar a eficácia da auriculoterapia com sementes de mostarda (Brassica juncea) na melhora da dor, na funcionalidade e na mobilidade lombar de profissionais técnicos e auxiliares de enfermagem do sexo feminino com dor lombar crônica. Foi realizado um ensaio clínico randomizado cego, dividido em dois grupos: um utilizou sementes de mostarda para acupressão nos pontos auriculares “Shen-Men”, “Rim”, “Simpático” e “Coluna Lombar” e o grupo placebo utilizou espuma de poliuretano de baixa densidade no lugar das sementes. Cada grupo realizou quatro sessões de auriculoterapia, uma vez por semana. Os grupos foram analisados por meio de termogramas infravermelhos e algometria por pressão para a dor, a medida dedo-chão para mobilidade e Questionário Roland-Morris para funcionalidade da coluna, com intervalo de confiança de 95%. A auriculoterapia com sementes de mostarda reduziu a temperatura média nos termogramas analisados em 0,8°C, bem como, aumentou o limiar de dor à pressão na coluna lombar das voluntárias em 0,4 Kgf, o que demonstra uma melhora significativa da dor lombar. Portanto, a auriculoterapia com sementes de mostarda mostrou-se eficaz na melhora da dor lombar.

Risks and Safety of Extended Auricular Therapy: A Review of Reviews and Case Reports of Adverse Events

OBJECTIVE

Auricular acupuncture (AA) and extended auricular therapy (AT) are a part of acupuncture practice shown to benefit patients with pain, anxiety, and other conditions, with cost-effective access enhanced when given in a group setting. Yet there are safety concerns and risks, perhaps unnecessary risks, that attend embedded, indwelling needles applied to the ear as a means of extended AT.

METHODS

Electronic searches were conducted in PubMed, MEDLINE, CINAHL and Cochrane Central Register of Controlled Trials (CENTRAL) for "auriculotherapy," "auricular acupuncture" or "auricular acupressure," "safety," "adverse events," "chondritis," and "perichondritis," with additional manual review of titles, links, and reference lists. Individual auricular therapy adverse event (AE) case reports were included, as well as systematic reviews and or meta-analyses if they evaluated AEs associated with AT.

RESULTS

Nineteen auricular AE case reports and nine safety reviews of or including auriculotherapy were included. Ten systematic reviews of AT with eight specific reviews of auricular acupressure (AP) were also included.

CONCLUSIONS

The primary AE risks is infection, perichondritis, and chondritis stemming from embedded or indwelling needles or potential inadvertent needlesticks from contaminated roaming sharps. Extended AP i.e., application of spheres, preferably seeds (natural, nontoxic botanical Vaccaria seeds) provides clinical benefit without the risks associated with embedded needles. More research is needed to establish if embedded needles at the ear are even necessary or have any advantage over in-session auricular acupuncture for immediate pain relief followed by ear acupressure.

Mozart's or Ambient Music do not Affect Autoalgometric Pain Threshold

Nowadays, researchers and clinicians are increasingly interested in alternative non-pharmacological treatments, and music therapy seems to have additional and powerful effects on different pathologies and pain. However, since pain is a subjective perception, it is difficult to evaluate if and which effect music has on it. In this study, a new device and method have been introduced to objectively estimate pain threshold and its changes related to external stimuli. The above-mentioned device, called autoalgometer, allows to evaluate pain threshold changes while listening to music or other sounds. In this experiment, the pain threshold was evaluated in twenty-seven volunteers after listening to one out of three different soundtracks: white noise, Mozart's sonata K448 or Brian Eno's ambient music. Compared to staying in silence, listening to the recordings had no significant effect on pain threshold, and the results did not show any significant difference between the experimental groups. Probably, the positive effect of music described in other studies can be ascribed to a psychological effect, meaning that music can improve subjective mood and, thus, modify pain perception.

Preliminary Effectiveness of Auricular Point Acupressure on Chemotherapy-Induced Neuropathy: Part 2 Laboratory-Assessed and Objective Outcomes

PURPOSE

To manage chemotherapy-induced neuropathy (CIN), this paper explores reliable and valid objectives measures to evaluate the treatment effects of auricular point acupressure (APA).

DESIGN/METHOD

This study was a repeated-measures one-group design. Participants received four weeks of APA to manage their CIN. The laboratory-assessed and objective outcomes included quantitative sensory testing, grip and pinch strength, and inflammatory biomarkers. Wilcoxon matched pairs signed-rank tests were conducted to determine change scores of outcomes at pre- vs. post- and pre- vs. 1-month follow-up. Spearman's rho correlation coefficient was used to examine the linear association of score changes of all objective study outcomes.

RESULTS

Comparing pre-and-post APA, (1) the mean score of the monofilament for all lower extremity sites tested decreased after APA, indicating sensory improvement; (2) the suprathreshold pinprick stimuli mean scores on the upper extremities increased, except the scores from the index finger and thumb; (3) the pain tolerance of thumb and trapezius areas increased; (4) decreasing IL1β (p = .05), IFNγ (p = .02), IL-2 (p = .03), IL-6 (p = .05), IL-10 (p = .05), and IP10/CXCL10 (p = .04) were observed pre-post APA. Conditional pain modulation was significantly (p< .05) associated with pain intensity (r = 0.55), tingling (r = 0.59); and IL1β concentration (r = 0.53) pre-post APA. The sustained effects of 4-week APA were observed at the 1-month follow-up.

CONCLUSIONS

Our study findings demonstrated the promising effectiveness of APA in the management of CIN, and these treatment effects can be assessed using reliable and valid objective measures.

CLINICAL IMPLICATIONS

If the efficacy of APA to manage CIN is confirmed in a larger sample, APA has the potential to be a scalable treatment for CIN because it is a reproducible, standardized, and easy-to-perform intervention.

Effects of auricular acupressure on pain and disability in adults with chronic neck pain

AIM

The aim of this study was to examine the effect of auricular acupressure (AA) on pain, pain threshold (PT), disability, and cervical range of motion in adults with chronic neck pain.

BACKGROUND

About 30-50% of the world's population suffers from chronic neck pain, and the cost of treatment is increasing.

MATERIALS AND METHODS

This single-blind, randomized sham-controlled study was conducted on 48 adults with chronic neck pain in South Korea. The experimental group (n = 25) received AA on specific acupoints for neck pain, whereas the control group (n = 23) received AA on unspecific acupoints. Participants received 4 weeks of auricular-acupressure intervention. Outcomes were assessed by the visual analog scale (VAS), PT, neck-disability index (NDI), and cervical range of motion. Measurements were taken 3 times: before intervention, 2 weeks into the intervention, and after the intervention.

RESULTS

Statistical differences between the two groups emerged in PT (p = .003), the NDI (p = .033), cervical flexion (p = .004), and left rotation (p = .004), but not on the VAS.

CONCLUSIONS

This study showed that AA leads to improvements on PT, neck disability, and cervical range of motion. Therefore, AA can be used as an alternative nursing intervention for chronic neck pain.

Autoalgometry: An Important Tool for Pressure Pain Threshold Evaluation

The term "pain threshold" refers to the measurement of the intensity of a physical stimulus that evokes pain. To estimate the pain threshold, a mechanical or electrical stimulus with increasing intensity is usually applied until the subject under evaluation refers to a pain sensation. This study aims to evaluate the autoalgometric pain threshold as a perfect technique to determine the effects of stimulation rate in relation to both gender and the site of stimulation. In this experimental model, pressure algometry was applied: the subject under evaluation pushed a finger against a small round metal tip, producing and at the same time controlling the intensity of the noxious stimulus. Through autoalgometry, the stimulus intensity was recorded over time, measuring the force change rate applied and studying the subject's behavior on approaching pain. This test was performed with 50 healthy volunteers on two days, applying a fast or slow rate of stimulation. The results described demonstrate that there is a positive correlation between the pressure increase rate and the pressure threshold evaluation. In light of these findings, autoalgometry can be proposed as an objective measure of pressure pain threshold for clinical and research use.

Effect of Auriculotherapy on the Plasma Concentration of Biomarkers in Individuals with Knee Osteoarthritis

Knee osteoarthritis (KOA) is one of the most frequent noncommunicable diseases with pain associated symptoms and affects the musculoskeletal system. Various forms of treatment can be indicated, and nonpharmacological treatment is also an available option for the management of KOA individuals. For instance, auriculotherapy (AT) is one possible procedure associated with the Traditional Chinese Medicine for dealing with KOA. It is believed that the concentration of certain biomarkers could be altered in individuals with KOA after AT. The aim of this study was to evaluate the effect of AT on plasma concentration of biomarkers in KOA individuals. This intervention is a controlled trial. Twenty-one subjects were grouped in two groups and submitted to AT with the stimulation of the Shen Men, kidney, and knee points in the treatment group or different points in the control group, once a week for 5 weeks. Blood was collected before the beginning of protocols and a week after the last session. Kolmogorov-Smirnov and Wilcoxon tests were performed, and a p ≤ 0.05 was considered statistically significant. Hematological parameters did not show any significant variation between the control group and treated group. Concerning the biochemical parameters, a significant reduction of direct bilirubin (from 43.31 ± 22.10 to 21.21 ± 5.30 μmol/L, p = 0.003), aspartate aminotransferase (from 0.48 ± 0.16 to 0.38 ± 0.09 μKat/L, p = 0.010), and triglycerides (from 7.04 ± 2.90 to 5.45 ± 2.57 mmol/L, p = 0.008) in the treated group was obtained. In conclusion, the analysis of results suggests that AT might be a useful intervention for the management of KOA individuals.

Efficacy of Auricular Acupressure for Chronic Low Back Pain: A Systematic Review and Meta-Analysis of Randomized Controlled Trials

Objectives

To identify the efficacy of auricular acupressure on pain and disability for chronic LBP by systematic review.

Methods

A search of randomized controlled trials was conducted in four English medical electronic databases and three Chinese databases. Two reviewers independently retrieved related studies, assessed the methodological quality, and extracted data with a standardized data form. Meta-analyses were performed using all time-points meta-analysis.

Results

A total of 7 trials met the inclusion criteria, of which 4 had the low risk of bias. The findings of this study showed that, for the immediate effect, auricular acupressure had large, significant effects in improving pain within 12 weeks. As for the follow-up effect, the pooled estimates also showed promising effect at 4-week follow-up after 4-week intervention (standardized mean difference = −1.13, 95% CI (−1.70, −0.56), P < 0.001). But, for the disability level, the therapeutic effect was not significant (mean difference = −1.99, 95% CI (−4.93, 0.95), P = 0.18). No serious adverse effects were recorded.

Conclusions

The encouraging evidence of this study indicates that it is recommended to provide auricular acupressure to patients with chronic low back pain. However, a more accurate estimate of the effect will require further rigorously designed large-scale RCTs on chronic LBP for improving pain and disability.

Efficacy and safety of auricular point acupressure treatment for gastrointestinal dysfunction after laparoscopic cholecystectomy: study protocol for a randomized controlled trial

BACKGROUND

Practitioners of traditional Chinese medicine know that auricular point acupressure (APP) using vaccaria seeds on the large intestine point (CO7) has a significant effect on postoperative gastrointestinal dysfunction. A standardized, clinical, research design will transform this clinical experience into scientific evidence, thus providing a basis to promote the wider use of this therapy. We aim to carry out a double-blind, randomized, controlled trial (RCT) to evaluate the efficacy and safety of APP treatment for gastrointestinal dysfunction after laparoscopic cholecystectomy.

METHODS/DESIGN

This study is a randomized, double-blind, controlled, single-center, clinical, pilot trial. It has been designed according to the Consolidated Standards of Reporting Trials (CONSORT 2010) guidelines as well as the Standards for Reporting Interventions in Controlled Trials of Acupuncture (STRICTA). Study subjects are being selected from among hospitalized patients who have undergone laparoscopic cholecystectomy at the Department of Minimally Invasive Surgery of Tianjin Nankai Hospital. Qualified subjects will be assigned randomly either to the APP group or to the APP sham stimulation group on the basis of random numbers generated using SPSS 19.0. A specifically appointed investigator will be responsible for the randomization. The APP therapy (or sham stimulation) will be performed 6 h after surgery and every 12 h subsequently; six sessions will be conducted, each lasting 3 min. The first evaluation will be performed immediately before the first treatment (6 h after surgery) and, then, every 12 h for seven evaluations. The primary outcome is the time to first passage of flatus after surgery; the secondary outcome measures are abdominal distension, nausea, vomiting, time to first defecation, psychological status, and quality of life.

DISCUSSION

This pilot trial is a standardized, scientific, clinical trial designed to evaluate the efficacy and safety of APP treatment-using vaccaria seeds on CO7-for gastrointestinal dysfunction after laparoscopic cholecystectomy. We aim to provide objective evidence to promote this therapy in clinical practice.

TRIAL REGISTRATION

Chinese Clinical Trial Registry, ChiCTR-IPR-15007643 . Registered on 14 December 2015.