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Showing posts with label nVNS. Show all posts
Showing posts with label nVNS. Show all posts

Wednesday, October 7, 2015

Noninvasive VNS Potentially Helpful for Acute Treatment of Cluster Headache

To the readers,

The reason I posted this article is the fact I use to suffer for years from debilitating cluster headaches.

 

Clinical Pain Medicine

ISSUE: OCTOBER 2015 | VOLUME: 13(10)

Noninvasive VNS Potentially Helpful for Acute Treatment of Cluster Headache

image

The results of the placebo-controlled ACT1 (Non-invasive Vagus Nerve Stimulation for the Acute Treatment) study, sponsored by electroCore, confirm that noninvasive vagus nerve stimulation (nVNS) may be a helpful acute intervention in selected patients with cluster headache (CH).

ElectroCore’s nVNS gammaCore device did not significantly increase the proportion of patients who had a pain-intensity scale score of 0 or 1 within 15 minutes of the start of therapy during their first CH attack. It also did not significantly lower average pain intensity at 15 minutes after treatment initiation, according to a presentation of the results at the American Headache Society’s 2015 Annual Scientific Meeting (abstract LBP07). Moreover, an accompanying poster indicated that true blinding was not achieved (abstract LBP08).

However, nVNS was associated with a higher proportion of sustained responders, defined as response at both 0.25 and one hour after treatment initiation. The respective percentages of sustained responders to nVNS or sham treatment were 26.7% and 12.3%.

“This is a doubling of the percentage of sustained responders, which we feel is clinically meaningful,” co-investigator Eric Liebler, BA, vice president, Scientific and Medical Affairs, electroCore, told Pain Medicine News in a telephone interview. “The patient wants to know whether their pain will go away or be much reduced, and they want it not only to go away, but to stay away.”

He said the company has conducted a similar study in Europe, and plans to submit an application that is based on data from both continents to the FDA for approval to market the device in the United States.

Nathaniel Schuster, MD, headache and facial pain fellow in the Department of Neurology at Montefiore Headache Center/Albert Einstein College of Medicine, in New York City, said he is looking forward to more studies of nVNS.

image

Photo: electroCore’s gammaCore device.

“I think that, if it proves to be effective, it will be welcomed eagerly by patients and physicians alike,” Dr. Schuster told Pain Medicine News. “Designing a sham control that effectively blinds trial subjects appears to be a challenge with this device, and a sham control with more effective blinding would improve the quality of the evidence.”

The ACT1 study initially included only people with episodic CH, but the investigators expanded it to also include those with chronic CH.

The sham device had an identical weight, visual and audio feedback, and user interface to the active nVNS device. However, the sham device generated a low-amplitude, low-frequency signal that did not stimulate the vagus nerve but produced a sensation by stimulating skin-touch receptors, according to Mr. Liebler. The active device produced a higher-amplitude, higher-frequency signal that stimulated the vagus nerve.

Seventy-three patients were randomly assigned to nVNS and another 77 to sham treatment for one month, followed by an open-label, three-month phase in which all patients received active nVNS. The two groups had similar demographic and CH characteristics.

There was a 26.7% response rate at 15 minutes with active nVNS and a 19.2% 15-minute response rate with sham (P=NS). Patients with episodic CH had a significantly higher 15-minute response rate with nVNS than those with chronic CH, at 34.2% and 13.6%, respectively (Figure).

image

Figure. Response rate (ITT population).

CH, cluster headache; ITT, intent-to-treat; nVNS, noninvasive vagus nerve stimulation

The rate of sustained-treatment response was significantly higher with nVNS compared with sham treatment. The bulk of the positive sustained response to nVNS was in the episodic cohort, which had a 34.2% sustained-treatment response rate versus 10.6% for sham treatment, whereas the respective rates for the chronic-CH cohort were 13.6% and 15.4%.

Patients with episodic CH responded in larger numbers than those with chronic CH both initially and over the first hour. Furthermore, there were no serious device-related adverse events. However, calculations of the rate of blinding at the end of the randomized phase “indicated that true blinding had not been achieved,” the authors noted in the accompanying poster.

—Rosemary Frei, MSc

http://www.painmedicinenews.com/ViewArticle.aspx?d=Clinical%2BPain%2BMedicine&d_id=82&i=October+2015&i_id=1234&a_id=33855

Friday, January 30, 2015

electroCore’s non-invasive vagus nerve stimulation therapy safe, effective across a variety of conditions

electroCore’s non-invasive vagus nerve stimulation therapy safe, effective across a variety of conditions

Published on January 29, 2015 at 8:44 AM ·

Non-invasive vagus nerve stimulation (nVNS) ‘improves the safety and tolerability of
VNS making it more accessible and facilitating further investigations across a wide range of uses when compared with surgically implanted VNS’ according to a review in the European Journal of Neurology. The review then went on to look at the efficacy of both surgically implanted VNS and non-invasive VNS including electroCore’s gammaCore device.

Professor Stephen Silberstein of Thomas Jefferson University – one of the authors of the paper – commented:

This review confirms that nVNS is safe and effective and because there is no surgery involved and because the costs are very competitive we believe it could open up a whole variety of conditions which we have responded to vagus nerve stimulation.

Related Stories

The Cyberonics VNS implant which has a licence in North America and Europe for refractory epilepsy and depression has been implanted in more than 70,000 patients over the last twenty years and has been found to be helpful to patients with several other conditions including headache, anxiety, gastric obesity and other conditions. However because of the high cost of treatment and the involvement of a surgical procedure these conditions were never researched in depth or brought to market.

JP Errico, CEO and founder of electroCore, commented:

This paper again validates how safe and effective VNS therapy is. It also shows how our gammaCore device can eliminate the surgical side effects and still provide effective stimulation. Our extensive pre-clinical and clinical program is already demonstrating how effective this treatment is across a variety of conditions.

electroCore has developed non-invasive Vagus Nerve Stimulation (nVNS) self-administered therapies for the treatment of multiple conditions in neurology, psychiatry, gastroenterology and respiratory fields. The company’s initial focus is on the treatment of primary headaches (migraine and cluster headache), and the associated chronic co-morbidities of gastric motility, psychiatric, sleep, and pain disorders that drive disproportionately large direct and indirect costs within the healthcare system and society.

Source:

http://www.electrocoremedical.com/

http://www.news-medical.net/news/20150129/electroCoree28099s-non-invasive-vagus-nerve-stimulation-therapy-safe-effective-across-a-variety-of-conditions.aspx

Friday, May 23, 2014

Vagus Nerve Stimulation for the Masses: Interview with electroCore CEO J.P. Errico

Medgadget Exclusive / Neurology

Vagus Nerve Stimulation for the Masses: Interview with electroCore CEO J.P. Errico

by Tom Fowler on May 22, 2014 • 6:05 pm

 

vagus nerve stimulation 293x300 Vagus Nerve Stimulation for the Masses: Interview with electroCore CEO J.P. Errico

electroCore, a Basking Ridge, New Jersey company co-founded in 2005, is developing non-invasive Vagus Nerve Stimulation (nVNS) therapies which can be delivered using their proprietary gammaCore technology to treat various neurologic, psychiatric, gastric motility, and respiratory conditions. Founded on the pioneering concept of using vagal neuromodulation to acutely treat patients with severe bronchoconstriction during an asthma attack, electroCore has used this concept to expand beyond the acute emergency indications and produce a prophylactic vagus nerve stimulation therapy option. Their initial focus on asthma expanded quickly into migraine and cluster headaches, based on patient feedback from their early studies, and new trials are continuing to investigate new uses for nVNS for gastric motility, pain, and sleep disorders, as well as depression and anxiety. I asked co-founder and CEO J.P. Errico about their gammaCore product, the technology behind it, and his role at electroCore.

Tom Fowler, Medgadget: Tell us how you progressed from being an MIT aeronautical engineering student to a patent attorney to leading a medical device company.

JP Errico CEO Vagus Nerve Stimulation for the Masses: Interview with electroCore CEO J.P. Errico

J.P. Errico: I was strongly influenced by my parents, one who was a practicing physician, and the other who had a law degree, to go, professionally, beyond my initial training as an engineer,. So, after graduating from MIT, I went to Duke Law School, where I branched out and simultaneously received a graduate degree in engineering. Because of my focus on patent law, after graduation I was approached by a family member who was a prominent spine surgeon, and within a very short time, our inventive and entrepreneurial bent had us building the first of several healthcare companies. The ventures were largely centered on inventions that could be licensed to market leading companies. The next stage was to begin the clinical development of more innovative technologies, but again these were purchased away from us by the same sort of market leaders. These ventures were successful in generating more than $500 million for our close network of investors. With electroCore, and nVNS, we are committed to building a ground breaking, paradigm-shifting product line. And with recent developments in our clinical and product design programs, I am increasingly confident of our ability to do just that.

Medgadget: How do you foresee gammaCore transforming the standard of care for headache treatment?

J.P. Errico: I foresee physicians, who have as their first obligation to do no harm, offering gammaCore as a first line treatment for their patients. As one of the world leading headache specialist said; “Why would you not use gammaCore first?” I think he is spot on. Through everything we have done, nVNS with gammaCore has been consistently safe, and it is easy for patients to use. Patients can continue with their existing treatments and if it does not work for some of them (nothing works for everyone), they can stop using it. Medications flood the entire body with exogenous chemicals, and thus, invariably have side effects. GammaCore uses the body’s own neural pathways to carry our nVNS therapy, which some refer to as an “electroceutical”, directly to the areas in the brain that release the endogenous chemicals many drug therapies try to modulate. SSRIs, SNRIs, and GABA analogues are some of the largest classes of drugs on the market, and they are designed to alter brain chemistry, and specifically serotonin, GABA, and norepinephrine (also known as noradrenalin). nVNS modulates these same neurotransmitters, but does so without requiring the patient’s liver, kidneys, and other organs to be exposed to foreign chemicals. The other huge benefit, from a patient’s perspective, is that he or she can likely continue with existing medication(s) if they choose, as there have been no observed interactions of nVNS with other treatments, For these reasons and others, electroceuticals is, and will continue to be a rapidly expanding area of healthcare, with GSK starting a new division and investing in multiple bioelectronics companies, and Merck investing in electroCore. I expect many other pharma and medical device companies will follow suit and become involved in this exciting space, and their traditional drugs will, we believe, will slide to the second or third choice… I also believe that patients will demand a non-invasive option that has fewer and more benign side effects than medications as a first option. We expect payors, as well, will appreciate the fact that nVNS can be used both prophylactically and acutely to manage headaches, and with innovative payment options, we hope to make patients and those who hold the purse strings champions of gammaCore.

Medgadget: What is the technology behind gammaCore therapy and are there any risks involved in having patients self administer the nVNS therapy?

J.P. Errico:Vagus Nerve Stimulation was pioneered, twenty-five years ago, by our friends at Cyberonics (Houston, Tx). They were the first to introduce gentle electrical stimulation of the vagus nerve and show that it can selectively stimulate the subset of the nerves in the vagus that have the ability to quiet the surge of activity associated with epileptic seizures. They have recently announced that more than 100,000 patients, world-wide have received their implants, and the profile of safety of their device has been very positive In fact, I believe that the only reason that this therapy option hasn’t climbed the continuum of care from a last resort to front line therapy is the cost and requirement for surgery. GammaCore offers the best of both worlds, the same underlying mechanism of action, without the requirement for surgery and the astronomical cost. In terms of putting it in the hands of patients, I can only say that it takes less time to train a patient to use gammaCore than it takes to train a person to use inhaled medications, and with over 500,000 doses administered to date, we haven’t found any device related adverse events. If the patient doesn’t like it, the therapy can be discontinued in a fraction of a second. In the modern world, we put oxycontin in the hands of patients for headaches, and we feed amphetamines to children with ADHD. Once those pills are ingested, it takes near-heroic efforts to clear those chemicals from the body.

Medgadget: Surgically implanted VNS has been used for some time in the treatment of refractory epilepsy and depression. What is the cost and effect comparison of implants vs. electroCore’s nVNS?

J.P. Errico: Last I heard, Cyberonics was selling their implantable device for over $24,000 in the US. I am not aware of the price point in the EU, or other markets around the world, but of course, that doesn’t include cost of the neurosurgeons’ time, the operating room staff, the anesthesiologist, the long-term maintenance, adjustments, battery replacement, and explanation of the device, if necessary. All of these costs add up to well over $30,000 in the US. Most importantly, VNS doesn’t work for everyone, so the cost for gaining benefits in those for whom it works have to include all the patients in whom it doesn’t (Cyberonics doesn’t give a rebate if the therapy doesn’t work). Reports indicate that 5 years out from the implantation of the device, close to 60% of patients have experienced significant benefit. That means, the real cost for gaining a patient with significant benefit is over $50,000. With gammaCore, while the final pricing of the therapy hasn’t been established, I am very confident to say that we don’t expect payors to commit anywhere near the same amount just to determine in whom the therapy will work. Our goal is to limit the cost of therapy for the payors as closely as can be to just the patients who are gaining the benefit. We are much more like a pharmaceutical in this way, i.e., think of the gammaCore as a bottle of pills containing 300 treatments. When it is used up, it is disposed of and you get another one. Of course, that isn’t quite as socially responsible to the environment – to be tossing things into the garbage all the time – so we intend to introduce reload-able devices that can be refilled with a new prescription, and the fee structure for this would be just like a chronic medication.

Medgadget: You are a named inventor on more than 125 issued US patents, and more than 100 pending patents. What are three tips for those of us that are applying for patents, particularly in the medical device field?

J.P. Errico: This is going to sound corny, but I would say the first thing you want to do is to make sure that whatever it is that you are trying to patent is actually innovative and has potential value to the world. It is an honor to receive a patent, and it is certainly something to be proud of, but they are expensive to obtain, and cost many thousands of dollars to maintain once you’ve gotten them. Make sure it is going to be worth the effort. Second, I would advise people to get an attorney to help. They really do an important service for inventors, and I would NOT suggest to anyone to do it alone. The scope of the patent, and its enforceability are critical to the value they have, so having a professional working with you is critical. Third, and this is specific to the medical field, which is invariably very crowded and intimidating, I would advise anyone with a good idea to commit yourself to your belief. So long as you are not violating the laws of physics, the only thing that stands between you and success is the energy you are willing to expend to make it happen.

divider Vagus Nerve Stimulation for the Masses: Interview with electroCore CEO J.P. Errico

Link: electroCore…

 

Tom Fowler Vagus Nerve Stimulation for the Masses: Interview with electroCore CEO J.P. Errico

Tom Fowler

Tom Fowler worked as a programmer in the healthcare IT industry before settling back in school to learn how to become a doctor. He likes to dabble with biotech startups, write postcards to his relatives, and play his ukulele. He was a TEDMED '13 scholar, has published research in biomedical informatics, and continues to advocate for international maternal and child health. Currently in the SELECT MD leadership program at USF Health Morsani College of Medicine.

http://www.medgadget.com/2014/05/vagus-nerve-stimulation-for-the-masses-interview-with-electrocore-ceo-j-p-errico.html

Friday, March 14, 2014

Effect of noninvasive vagus nerve stimulation on acute migraine: An open-label pilot study.

Cephalalgia. 2014 Mar 7. [Epub ahead of print]

Effect of noninvasive vagus nerve stimulation on acute migraine: An open-label pilot study.

Goadsby P1, Grosberg B, Mauskop A, Cady R, Simmons K.

Author information
Abstract
BACKGROUND:

We sought to assess a novel, noninvasive, portable vagal nerve stimulator (nVNS) for acute treatment of migraine.

METHODS:

Participants with migraine with or without aura were eligible for an open-label, single-arm, multiple-attack study. Up to four migraine attacks were treated with two 90-second doses, at 15-minute intervals delivered to the right cervical branch of the vagus nerve within a six-week time period. Subjects were asked to self-treat at moderate or severe pain, or after 20 minutes of mild pain.

RESULTS:

Of 30 enrolled patients (25 females, five males, median age 39), two treated no attacks, and one treated aura only, leaving a Full Analysis Set of 27 treating 80 attacks with pain. An adverse event was reported in 13 patients, notably: neck twitching ( N  = 1), raspy voice ( N  = 1) and redness at the device site ( N  = 1). No unanticipated, serious or severe adverse events were reported. The pain-free rate at two hours was four of 19 (21%) for the first treated attack with a moderate or severe headache at baseline. For all moderate or severe attacks at baseline, the pain-free rate was 12/54 (22%).

CONCLUSIONS:

nVNS may be an effective and well-tolerated acute treatment for migraine in certain patients.

KEYWORDS:

Migraine, acute treatment, neuromodulation, vagus nerve

PMID:
24607501
[PubMed - as supplied by publisher] http://www.ncbi.nlm.nih.gov/pubmed/24607501

Thursday, March 13, 2014

Clinical study in international headache journal finds electroCore’s non invasive vagus nerve stimulation effective in treating migraine

Clinical study in international headache journal finds electroCore’s non invasive vagus nerve stimulation effective in treating migraine

 

BusinessWire · Mar. 13, 2014 | Last Updated: Mar. 13, 2014 10:54 AM ET

A study reported (13TH March 2014) in the International Headache Society’s official journal Cephalalgia found that the use of electroCore’s non invasive vagus nerve stimulation therapy (nVNS) may be an effective and well tolerated treatment for migraine in certain patients.

The open label study, which was led by Professor Goadsby, was carried out by the University of California, San Francisco and at four other sites in the US involving 30 patients.

Of the 30 enrolled patients 27 used the nVNS therapy to treat a total of 80 migraine attacks. Patients with moderate or severe headache attacks reported pain freedom or relief in, twenty-three out of fifty-four attacks (43 %). This included twelve out of fifty-four attacks where the patients reported being pain free at two hours after treatment (22 %). Additionally, in ten of twenty-six attacks when the patient treated while the pain was mild the patients reported being pain free at two hours (38 %). No unanticipated, serious or severe adverse events were reported and the paper stated that nVNS seems much better tolerated than the more potent triptans and does not have comparable cardiovascular or cerebrovascular concerns.

The study also found that certain patients responded positively on a consistent basis. Of eighteen patients who treated at least three attacks six were pain free on 2/3 occasions (33 %).

JP Errico CEO and founder of electroCore commented. “We are delighted to see that this easy to use treatment was found to be effective in a substantial number of patients for this debilitating and painful condition. The authors of this report noted the need for further placebo controlled trials and we are presently carrying out four double blind randomized controlled studies in the US and Europe which will read out in the second half of this year”

ElectroCore's proprietary, non invasive electrical stimulation therapy works by activating specific fibers in the vagus nerve bundle. This activation causes the release of inhibitory neurotransmitters within the central nervous system, and reduces the over expression of the excitatory neurotransmitter glutamate, which has been implicated in a number of different disorders.

Patients self treat by holding the device on their neck over the vagus nerve for two minutes. All patients are trained in the use of the device to ensure they place it correctly and they use the appropriate setting.

The great benefit of this therapy is that it is very safe. Surgically implanted VNS has been in use for more than 20 years in over a 100,000 patients without any side effects. It can also be used in conjunction with other medications as the chemicals it produces are endogenous and contained within the central nervous system.

Authors; J. Goadsby, B. M. Grosberg, A. Mauskop, R. Cadyand K.A. Simmons

Contacts

Vane Percy & Roberts for ElectroCore
Simon Vane Percy
+44-(0)-1737-821890
simon@vanepercy.com

http://www.nationalpost.com/markets/news/Clinical+study+international+headache+journal+finds+electroCore+invasive/9613205/story.html

Tuesday, March 26, 2013

Noninvasive, Hand-held Device Promising for Migraine

Noninvasive, Hand-held Device Promising for Migraine

Caroline Cassels

Mar 26, 2013
                                                                                               
San Diego, California — Noninvasive vagus nerve stimulation (nVNS) using a portable, hand-held device may offer an effective, well tolerated, and safe treatment for acute migraine, preliminary research suggests.

A small, open-label pilot study conducted by investigators at the University of Southern California San Francisco (UCSF) showed nVNS reduced pain and increased pain-free status in a group of migraine patients with, and without, aura.

According to principal investigator Peter Goadsby, MB, BS, although the findings are preliminary, they offer the hope of an effective treatment without many of the adverse effects associated with current migraine treatments, which include triptans, ergotamine, antiepileptics, and antidepressants.
In addition, he noted, over the past 5 to 7 years there has been a trend toward developing neuromodulation treatments with implantable devices. He added that if it proves effective, this hand-held, portable, and noninvasive modality would be a step up.

"The nice thing about external devices is if they don't work [the patient] can give them back and you don't have to do anything complex. One of the problems we have with internal devices at the moment is that they are expensive to do, they're relatively invasive and things can go wrong — not big things, but still.

"If you give me a device that can help 20% of my patients then will be a happy man, particularly if I don't do any harm to any of them," Dr. Goadsby told delegates here at the American Academy of Neurology (AAN) 65th Annual Meeting.

Results
Dr. Goadsby, who is director of UCSF's Headache Center, said the move to develop noninvasive neuromodulation approaches came from a number of clinical observations, the seminal one being the case of a young man who was treated with a VNS implant for intractable epilepsy.
The treatment failed to control his seizures, but clinicians noted that he became migraine free. The report was published in 2002 in Cephalagia.

For the pilot study the investigators recruited 30 patients — 25 females and 5 males — with a median age of 39 who had episodic migraine with and without aura.

Patients were asked to treat 3 attacks over the 6-week study period. The treatment consisted two 90-second doses at 15-minute intervals delivered to the right cervical branch of the vagus nerve. Patients were asked to self-treat once pain became moderate severe or after 20 minutes of mild pain.

Essentially, said Dr. Goadsby, the device was placed on the right side of the neck, and a thumbwheel allowed patients to turn the electrical stimulator up or down.

Three of the study participants experienced no attacks, so the final analysis was based on 27 patients and 84 treated attacks.

Data for the first attack among patients with moderate and severe pain showed that 4 of 19 patients (21%) were pain free at 2 hours and 8 of 19 (42%) had pain relief that decreased to nil or mild at 2 hours.

Results for those with mild pain at first attack showed 5 of 8 (63%) were pain free at 2 hours.
When researchers examined the effect of the device on all migraine attacks, they found that 12 of 55 (22%) patients with moderate to severe migraine and 10 of 26 (38%) with mild migraine were pain free at 2 hours.

Mild, Infrequent Adverse Effects
Adverse events were infrequent and mild and included neck twitching (n = 3), raspy voice (n = 1), and neck redness (n = 1).

Dr. Goadsby noted that the sensation patients experience from the device is not pleasant but also not unpleasant.

These findings, he said, warrant further investigation in randomized, placebo-controlled trials and added that a sham device is being developed.

Future studies of the device will examine whether there are treatment differences between the right and left sides of the neck, as well as the treatment durability.

Noninvasive neuromodulation, said Dr. Goadsby, has much to offer migraineurs.

"If we can develop noninvasive treatments for even a small group of patients that would be a helluva step forward," he said.

Warrants Further Study
Commenting on the study for Medscape Medical News, Tobias Kurth, MD, director of research, Institut national de la santé et de la recherche médicale (INSERM), University of Bordeaux, Talence, France, and associate epidemiologist, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts, agreed that the data are "convincing enough to warrant further study."

"If this turns out to be an effective treatment it would add to the treatment options for migraine with a device that is almost free of side effects," said Dr. Kurth.

He noted that about 30% of migraineurs do not respond to therapy and so novel treatment approaches are urgently needed.

Dr. Kurth added that although invasive neurostimulation for severe migraine has demonstrated some benefit, he remains unconvinced that it is a good treatment option for even in this severely affected population.

On the basis of the data at this point, he said, in his opinion it should be considered a "last resort" treatment in severely affected patients for whom nothing else has worked.

On the other hand, by eliminating the need for surgery and its related risks and adverse effects, nVNS may have potential as a viable treatment option for at least a proportion of patients with migraine, he added.

"It will not be for everybody for sure but even if it works for a small fraction of patients for whom no other medication seems to work this would be a huge success," said Dr. Kurth.

Dr. Goadsby reports he has received $2000 in direct compensation related to the presentation from the device manufacturer. Funding from the study came from multiple sources, most prominently from the Sandler Family Trust and the Department of Defense. Dr. Goadsby also reports the device manufacturer had no role in the study's data collection or analysis. Dr. Kurth has disclosed no relevant financial relationships.
                    
American Academy of Neurology (AAN) 65th Annual Meeting. Abstract S40.004. Presented March 20, 2013.
 

http://www.medscape.com/viewarticle/781443

Thursday, March 21, 2013

Non-invasive vagus nerve stimulation for the treatment of acute asthma exacerbations--results from an initial case series.

2013 Mar 19;6(1):7. [Epub ahead of print]

Non-invasive vagus nerve stimulation for the treatment of acute asthma exacerbations--results from an initial case series.

Abstract

A prospective multicentre clinical study was initiated to evaluate the safety and potential clinical benefit of non-invasive vagus nerve stimulation (nVNS) for the treatment of bronchoconstriction exacerbations in asthmatics. Due to slow enrolment and design changes of the device, the study was prematurely terminated after enrolment of four eligible patients. Three of the four patients were considered treatment successes based on improvement in FEV1, improvement in VAS dyspnoea scoring, and the absence of device-related adverse events. ClinicalTrials.gov Identifier NCT01385306.
PMID:
23510361
[PubMed - as supplied by publisher]
http://www.ncbi.nlm.nih.gov/pubmed/23510361