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This study, part of a larger research project (The Retornus Study), is aimed to evaluate new strategies to optimize rehabilitation outcomes in dysphagic stroke patients. Main objective is to assess effectiveness of neuromuscular electroestimulation (NMES) in combination with respiratory muscle training (RMT) in the treatment of oropharyngeal dysphagia in subacute stroke patients.
Dysphagia is present in a significant proportion of subacute stroke patients (up to 85%, depending on the series) and is associated with an increase in medical complications such as bronchoaspirative pneumoniae which is responsible for approximately half of the deaths that occur in these patients. Besides, the risk of pneumonia in patients with dysphagia is three times higher compared to those patients without. Since there is no drug able to restore the swallowing and respiratory muscle function, neurological rehabilitation apperars to be as the mainstay of treatment of these disorders.
Respiratory muscle weakness is common after stroke, but how it contributes in the development of bronchoaspiration pneumonia is not well determined. In acute phases of stroke, the mechanism seems to be more related to an impaired central drive than the reduction of strength in respiratory muscle.
Otherwise, the NMES aims to improve muscle strength. The NMES accelerates swallowing recovery since it induces brain reorganitzation after stroke through sensory and motor stimulation of peripheral nerves, mainly in swallowing aerea.
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| RMT + usual care | Experimental | Device: Orygen-Dual® valve trainer Intensity: 30% of maximal respiratory pressures (increasing intervals: 10 cmH2O per week) Training schedule: 5 sets of 10 repetitions followed by 1-2 minutes of unloaded recovery breathing off the device, two sessions per day, 5 days per week, for 3 weeks. |
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| NMES + usual care | Experimental | Device: Vital Stim (Chattanooga Group, Hixson, TN, USA) Administration of 80 Hz transcutaneous electrical biphasic stimulus Schedule: 40 minutes per day, 5 sessions per week during hospitalization in the Neurorehabilitation ward (3 weeks approx). |
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| Usual care | Active Comparator | Usual care (standard multidisciplinary inpatient rehabilitation program) consisting of physical, occupational and speech therapy sessions to improve activities of daily life, mobility and communication skills (minimum 3 hours per day, 5 days a week, during 3 weeks), Standard swallow therapy (usual care of dysphagia in stroke patients) consists of physiotherapy, occupational therapy and speech therapy targeting specific swallow impairments. In the case of dysphagia, the standard pattern includes measures to protect the airway and compensatory techniques. |
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| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| RMT + usual care | Procedure | Respiratory muscle training is performed with the Orygen Dual valve (inspiratory and espiratory trainer) |
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| Measure | Description | Time Frame |
|---|---|---|
| Penetration Aspiration Scale | Videofluoroscopy swallow assessment with the 8-point Penetration Aspiration Scale (PAS): PAS score of 1 indicates a normal test, scores from 2 to 5 indicate passage of material into the larynx that does not pass below the vocal folds (penetration) and scores from 6 to 8 indicate passage of material below the level of vocal folds (aspiration) | up to 3 months follow-up |
| Measure | Description | Time Frame |
|---|---|---|
| Maximal inspiratory and expiratory muscle strength | Maximal respiratory muscle strength is assessed through maximal inspiratory and expiratory pressures (PImax and PEmax, respectively) measured at the mouth. To determine respiratory pressures, patients were urged to perform a maximum inspiration from residual volume against an occluded airway and a maximum expiratory effort from total lung capacity. |
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Inclusion Criteria:
Exclusion Criteria:
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| Name | Affiliation | Role |
|---|---|---|
| Anna Guillen, MD | Parc de Salut Mar | Principal Investigator |
| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| Hospital de l'Esperança | Barcelona | Barcelona | 08024 | Spain |
| PubMed Identifier | Type | Citation | Retractions |
|---|---|---|---|
| 17294298 | Background | Wheeler KM, Chiara T, Sapienza CM. Surface electromyographic activity of the submental muscles during swallow and expiratory pressure threshold training tasks. Dysphagia. 2007 Apr;22(2):108-16. doi: 10.1007/s00455-006-9061-4. Epub 2007 Feb 10. | |
| 17972964 | Background | Huckabee ML, Doeltgen S. Emerging modalities in dysphagia rehabilitation: neuromuscular electrical stimulation. N Z Med J. 2007 Oct 12;120(1263):U2744. |
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| ID | Term |
|---|---|
| D003680 | Deglutition Disorders |
| D020521 | Stroke |
| ID | Term |
|---|---|
| D004935 | Esophageal Diseases |
| D005767 | Gastrointestinal Diseases |
| D004066 | Digestive System Diseases |
| D010608 | Pharyngeal Diseases |
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| ID | Term |
|---|---|
| D001945 | Breathing Exercises |
| ID | Term |
|---|---|
| D026441 | Mind-Body Therapies |
| D000529 | Complementary Therapies |
| D013812 | Therapeutics |
| D026241 | Exercise Movement Techniques |
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| NMES | Procedure | Neuromuscular electrical stimulation is performed with the Vital Stim ® device (approved by the FDA for dysphagia treatment). It consists in the placement of two electrodes located in suprahyoid muscles as above described. |
|
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| Usual care | Procedure | Standard swallow therapy consists of physiotherapy, occupational therapy and speech therapy targeting specific swallow impairments. In the case of dysphagia, the standard pattern includes measures to protect the airway and compensatory techniques. |
|
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| up to 3 months follow-up |
| Security of swallowing oral phase | Security signs (tone of voice, coughing during or after eating, or desaturation of more than 3% compared to baseline pulse oximetry) are assessed with the Volume Viscosity Swallow Test:(V-VST). | up to 3 months follow-up |
| Number of participants with signs of impaired efficacy ( Piecemeal deglutition and oropharyngeal residue). | up to 3 months follow-up |
| 17216392 | Background | Logemann JA. The effects of VitalStim on clinical and research thinking in dysphagia. Dysphagia. 2007 Jan;22(1):11-2. doi: 10.1007/s00455-006-9039-2. Epub 2007 Jan 10. No abstract available. |
| 16269630 | Background | Martino R, Foley N, Bhogal S, Diamant N, Speechley M, Teasell R. Dysphagia after stroke: incidence, diagnosis, and pulmonary complications. Stroke. 2005 Dec;36(12):2756-63. doi: 10.1161/01.STR.0000190056.76543.eb. Epub 2005 Nov 3. |
| 16571384 | Background | Chiara T, Martin AD, Davenport PW, Bolser DC. Expiratory muscle strength training in persons with multiple sclerosis having mild to moderate disability: effect on maximal expiratory pressure, pulmonary function, and maximal voluntary cough. Arch Phys Med Rehabil. 2006 Apr;87(4):468-73. doi: 10.1016/j.apmr.2005.12.035. |
| 25503549 | Background | Kulnik ST, Birring SS, Moxham J, Rafferty GF, Kalra L. Does respiratory muscle training improve cough flow in acute stroke? Pilot randomized controlled trial. Stroke. 2015 Feb;46(2):447-53. doi: 10.1161/STROKEAHA.114.007110. Epub 2014 Dec 11. |
| D010038 | Otorhinolaryngologic Diseases |
| D002561 | Cerebrovascular Disorders |
| D001927 | Brain Diseases |
| D002493 | Central Nervous System Diseases |
| D009422 | Nervous System Diseases |
| D014652 | Vascular Diseases |
| D002318 | Cardiovascular Diseases |
| D026741 |
| Physical Therapy Modalities |