A new method for enhanced expectoration of sputum by vibratory stimulation of the cervical trachea
| Autor: | Yoichiro Hamamoto, Atsuto Mouri, Mitsuhiro Kamimura, Tatsuya Ibe, Shinjiro Takeoka, Chie Homma, Nobuhisa Kameyama |
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| Rok vydání: | 2017 |
| Předmět: |
Male
Pulmonary and Respiratory Medicine Chronic bronchitis medicine.medical_specialty Visual analogue scale Respiratory Tract Diseases Vibration Pulmonary Disease Chronic Obstructive 03 medical and health sciences 0302 clinical medicine Physical Stimulation medicine Respiratory muscle Humans 030212 general & internal medicine Respiratory system Physical Therapy Modalities Aged Aged 80 and over COPD Cross-Over Studies Bronchiectasis business.industry Sputum Middle Aged respiratory system medicine.disease Crossover study Chest Wall Oscillation Surgery Trachea 030228 respiratory system Female medicine.symptom business |
| Zdroj: | Respiratory Investigation. 55:276-282 |
| ISSN: | 2212-5345 |
| DOI: | 10.1016/j.resinv.2016.12.006 |
| Popis: | Background Expectoration of sputum can be difficult for patients with respiratory conditions such as chronic obstructive pulmonary disease, chronic bronchitis, or bronchiectasis because of the effects of decreased pulmonary function, respiratory muscle fatigue, altered sputum properties, and impaired ciliary function. We developed a new method for the vibratory stimulation of the cervical trachea and this study aimed to compare it with the Acapella (a current oscillation device) method. Methods Patients with chronic productive cough and difficulty with expectoration were recruited for the study. The tracheal vibration and Acapella methods were applied for 4 weeks each, according to a crossover design with an intervening 4-week washout period. To perform the tracheal vibration method, an electronic artificial larynx (Yourtone®) was applied to the cervical trachea for up to 5minutes. Patient preference for the two devices was determined from the performance scores recorded for each device and by using a visual analogue scale. Results Twelve patients were recruited in the study. According to the performance scores assigned by the subjects, the tracheal vibration method was effective in 9 patients, while the Acapella method was effective in 10 patients. Both methods were effective in 8 patients, among whom the tracheal vibration method was more effective in 5 patients. Both methods were found to be ineffective in 1 patient. Conclusions The tracheal vibration method may be effective at removing central airway sputum and does not require repeated forced expiratory effort, which can otherwise cause exhaustion in patients with decreased lung function. Further investigation is required to confirm its use as a new oscillation technique. |
| Databáze: | OpenAIRE |
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