In the late 1990’s Dr. Shaheen Hamdy and his group were able to demonstrate for the first time that delivering Pharyngeal Electrical Stimulation (PES) to the nerves in the throat could result in therapeutic changes in the brain. Most importantly they showed that the positive changes they were able to cause in the brain still remained even when the stimulation was stopped. This groundbreaking research was published in one of the most prestigious scientific journals in the world read more – Nature Neuroscience 1998 May;1(1):64-8.
Clinical studies in patients soon followed and it was shown that the positive changes in the brain also led directly to improvements in swallowing function in patients with dysphagia. A very significant reduction in the amount of food or liquid accidentally entering the patients airways could be seen after treatment read more – Neuron. 2002 May 30;34(5):831-40.
The clinical trial found that after pharyngeal stimulation over 75% of patients recovered the ability to swallow safely. They showed improvements in oral nutritional intake and were able to eat more independently.
The study also found that patients who received pharyngeal stimulation left hospital an average of 5 days sooner than patients who didn’t read more.
There were no adverse events reported during any of the clinical trials. Phagenesis® is committed to ongoing research and development that will transform the lives of people with dysphagia.
Hamdy S, Aziz Q, Rothwell JC, et al. The cortical topography of human swallowing musculature in health and disease. Nat Med 1996; 2: 1217-1224 read more.
Hamdy S, Aziz Q, Rothwell JC, et al. Explaining oropharyngeal dysphagia after unilateral hemispheric stroke. Lancet 1997; 350: 686-692 read more.
Hamdy S, Aziz Q, Rothwell JC, et al. Recovery of Swallowing after Dysphagic Stroke Relates to Functional Reorganisation in Intact Motor Cortex. Gastroenterology 1998; 115: 1104-1112 read more.
Hamdy S, Rothwell JC, Aziz Q, Sigh Kd, Thompson DG. Long-term reorganization of human motor cortex driven by short-term sensory stimulation. Nat Neurosci 1998; 1: 64-68 read more.
Fraser C, Hamdy S, Power M, et al. Driving Plasticity in Adult Human Motor Cortex Improves Functional Performance after Cerebral Injury. Neuron 2002; 34: 831-840 read more.
Singh S, Hamdy S, et al. Dysphagia in stroke patients. Postgrade Med J 2006 Jun;82(968):383-91 read more.
Jayasekeran V, Singh S, Tyrrell P, et al. Adjunctive functional pharyngeal electrical stimulation reverses swallowing disability after brain lesions. Gastroenterology 2010; 138: 1737-1746 read more.
Geeganage C, Beavan J, et al. Interventions for dysphagia and nutritional support in acute and subacute stroke. Cochrane Database Syst Rev. 2012 Oct 17; 10:CD000323 read more.
Restivo DA, Casabona A, Centonze D, et al. Pharyngeal electrical stimulation for dysphagia associated with multiple sclerosis: a pilot study. Brain Stimulation Volume 6, Issue 3 2013 418 – 423 read more.
Michou E, Mistry S, Jefferson S, et al. Characterising the mechanisms of central and peripheral forms of neurostimulation in chronic dysphagic stroke patients. Brain Stimulation 7 (2014) 66-73 read more.
Suntrup S, Marian T, Schröder J B, et al. Electrical pharyngeal stimulation for dysphagia treatment in tracheotomized stroke patients: a randomised controlled trial. Intensive Care Medicine , Volume 41, Issue 9, pp 1629-1637 read more.
Aida S, Ryosuke T, Magaia J, et al. Peripheral and central control of swallowing initiation in healthy humans. Physiology & Behaviour 151 (2015) 404-411 read more.
McLaughlin C, Gilzeane N, Rehman H, et al. Treatment of Post-Stroke Dysphagia with Pharyngeal Electrical Stimulation: the MAPS Clinical Registry. Presented at UKSF 2015 read more.
Scutt P, Lee HS, Hamdy S, et al. Pharyngeal Electrical Stimulation for Treatment of Poststroke Dysphagia: Individual Patient Data Meta-analysis of Randomised Controlled Trials. Hindawi Publishing Corporation, Stroke Research and Treatment, Volume 2015, Article ID 429053, 8 pages read more.
Wann L, Rehman H, et al. The use of Pharyngeal Electrical Stimulation for Treatment of Post-Stroke Dysphagia. British International Doctor’s Association, Issue No.1, Volume 22, January 2016 read more.
Bath PM, Scutt P, et al. Pharyngeal Electrical Stimulation for Treatment of Dysphagia in Subacute Stoke: A Randomized Controlled Trial. Stroke 2016 read more.
Köstenberger M, Likar R, et al. Pharyngeal Electrical Stimulation (PES) – a novel treatment for dysphagia in mechanically ventilated neuro-ICU patients. ÖGARI 2016 read more.
Vasant DH, Michou E, et al. Pharyngeal Electrical Stimulation in Dysphagia Poststroke: A Prospective, Randomized Single-Blinded Interventional Study. Neurorehabilitation and Neural Repair 1-10 2016 read more.