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Subject responses to frequency of need for conventional means of secretion clearance, severity of such episodes, difficulty in raising secretions and change in ease in raising secretions using the Cough System compared with previous methods. Compared to pre-implant, there were significant improvements in all parameters of secretion management at the 28-week timepoint and maintained at each of the subsequent timepoints. (p < 0.01 compared with pre-implant values for each).
