Electroacupuncture


Electroacupuncture

Electroacupuncture is a form of acupuncture in which pairs of acupuncture needles are attached to a device that generates continuous electric pulses between them. Another term is Percutaneous Electrical Nerve Stimulation (PENS).

According to some acupuncturists, this practice augments the use of regular acupuncture, can restore health and well-being, and is particularly good for treating pain. For the most part, there is insufficient scientific evidence regarding the safety or efficacy of electroacupuncture, although there is evidence for its efficacy in treating post-chemotherapy vomiting not for acute or delayed nausea severity [cite web
title = Acupuncture-point stimulation for chemotherapy-induced nausea or vomiting
date = 2006-07-19
url = http://www.cochrane.org/reviews/en/ab002285.html
accessdate = 2006-08-06
] .

Electroacupuncture
This article is part of the branches of CAM series.

Use by acupuncturists

According to "Acupuncture Today", a trade journal for acupuncturists:

:"Electroacupuncture is quite similar to traditional acupuncture in that the same points are stimulated during treatment. As with traditional acupuncture, needles are inserted on specific points along the body. The needles are then attached to a device that generates continuous electric pulses using small clips. These devices are used to adjust the frequency and intensity of the impulse being delivered, depending on the condition being treated. Electroacupuncture uses two needles at time so that the impulses can pass from one needle to the other. Several pairs of needles can be stimulated simultaneously, usually for no more than 30 minutes at a time." [cite web
title = Acupuncture Today: Electroacupuncture
date = 2004-02-01
url = http://www.acupuncturetoday.com/abc/electroacupuncture.html
accessdate = 2006-08-09
]

That article adds::"According to the principles of traditional Chinese medicine, illness is caused when qi does not flow properly throughout the body. Acupuncturists determine whether qi is weak, stagnant or otherwise out of balance, which indicates the points to be stimulated. Electroacupuncture is considered to be especially useful for conditions in which there is an accumulation of qi, such as in chronic pain syndromes, or in cases where the qi is difficult to stimulate." [cite web
title = Acupuncture Today: Electroacupuncture
date = 2004-02-01
url = http://www.acupuncturetoday.com/abc/electroacupuncture.html
accessdate = 2006-08-09
]

Electroacupuncture is also variously termed EA, electro-acupuncture or incorporated under the generic term electrotherapy.

The above description does not reflect the full scope of practice nor application of electroacupuncture. While application of electrical currents to specific acupuncture points is used as an alternative to stimulating these areas of the body (instead of using manual manipulation techniques), practitioners also apply electroacupuncture using a neurophysiological model. In this approach, the same practitioners that use traditional acupuncture points, will also incorporate mapping of neuronal pathways, cutaneous and spinal distributions, to bring about a therapuetic response. In addition to pain, electroacupuncture may be used to treat musculoskeletal trauma and muscle dysfunction, over-use injuries (tendonitis or RSI), spasms and sprains.

cientific research

The Cochrane Collaboration, a group of evidence-based medicine (EBM) reviewers, reviewed eleven randomized controlled trials on the use of electroacupuncture at the P6 acupuncture point to control chemotherapy-induced nausea or vomiting. The reviewers found that electroacupuncture applied along with anti-vomiting drugs reduced first-day vomiting after chemotherapy more effective than anti-vomiting drugs alone. However, the drugs given were not the most modern drugs available, so the reviewers stated that further research with state-of-the-art drugs was needed to determine clinical relevance. The reviewers concluded::"This review complements data on post-operative nausea and vomiting suggesting a biologic effect of acupuncture-point stimulation. Electroacupuncture has demonstrated benefit for chemotherapy-induced acute vomiting, but studies combining electroacupuncture with state-of-the-art antiemetics and in patients with refractory symptoms are needed to determine clinical relevance. ... Noninvasive electrostimulation appears unlikely to have a clinically relevant impact when patients are given state-of-the-art pharmacologic antiemetic therapy." [cite web
title = Acupuncture-point stimulation for chemotherapy-induced nausea or vomiting
date = 2006-07-19
url = http://www.cochrane.org/reviews/en/ab002285.html
accessdate = 2006-08-06
]

The Cochrane Collaboration also reviewed acupuncture and electroacupuncture for the treatment of rheumatoid arthritis. Due to the small number and poor quality of studies, they found no evidence to recommend its use for this condition. The reviewers concluded::"Although the results of the study on electroacupuncture show that electroacupuncture may be beneficial to reduce symptomatic knee pain in patients with RA 24 hours and 4 months post treatment, the reviewers concluded that the poor quality of the trial, including the small sample size preclude its recommendation. The reviewers further conclude that acupuncture has no effect on ESR, CRP, pain, patient's global assessment, number of swollen joints, number of tender joints, general health, disease activity and reduction of analgesics. These conclusions are limited by methodological considerations such as the type of acupuncture (acupuncture vs electroacupuncture), the site of intervention, the low number of clinical trials and the small sample size of the included studies." [cite web
title = Acupuncture and electroacupuncture for the treatment of rheumatoid arthritis
date = 2006-07-19
url = http://www.cochrane.org/reviews/en/ab003788.html
accessdate = 2006-08-06
]

afety

Researchers at the FDA Center for Devices and Radiological Health (Rockville, Maryland, USA) evaluated three representative devices intended for electrostimulation of acupuncture needles. The abstract at PubMed summarizes their findings::"Three representative electrostimulators were evaluated to determine whether they meet the manufacturers' labeled nominal output parameters and how the measured parameters compare with a safety standard written for implanted peripheral nerve stimulators. The pulsed outputs (pulse width, frequency, and voltage) of three devices were measured with an oscilloscope across a 500-ohm resistance, meant to simulate subdermal tissue stimulated during electroacupuncture. For each device, at least two measured parameters were not within 25% of the manufacturer's claimed values. The measured values were compared with the American National Standard ANSI/AAMI NS15 safety standard for implantable peripheral nerve stimulators. Although for two stimulators the pulse voltage at maximum intensity was above that specified by the standard, short-term clinical use may still be safe because the standard was written for long-term stimulation. Similarly, the net unbalanced DC current, which could lead to tissue damage, electrolysis, and electrolytic degradation of the acupuncture needle, was within the limits of the standard at 30 pulses per second, but not at higher frequencies. The primary conclusions are (1) that the outputs of electrostimulators must be calibrated and (2) that practitioners must be adequately trained to use these electrostimulators safely." [cite web
title = Electrostimulators for acupuncture: safety issues.
author= Lytle CD, Thomas BM, Gordon EA, Krauthamer V.
format= PudMed abstract
date = 2002-02-01
url = http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=pubmed&cmd=Retrieve&dopt=AbstractPlus&list_uids=10706234&query_hl=3&itool=pubmed_docsum
accessdate = 2006-08-06
]

Criticism

Clinical use of electroacupuncture frequently relies on the conceptual framework of Traditional Chinese Medicine (TCM), which some scholars have characterized as pseudoscientific. Proponents reply that TCM is a prescientific system that continues to have practical relevance. Yet, practitioners also incorporate biomedical and neurophysiological principles in using EA, for which it possibly has better suitability. See .

References

ee also

* acupressure
* acupuncture
* Transcutaneous Electrical Nerve Stimulator (TENS)
* Electroacupuncture according to Voll


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