The primary aim of this study is to determine if work of breathing estimated using swing Edi will be improved following initiation of bethanechol in infants with tracheobronchomalacia. The investigators hypothesize that work of breathing will be improved in infants with tracheobronchomalacia estimated by a 20% mean decrease in swing Edi following initiation of bethanechol.
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The primary aim of this study is to determine if work of breathing estimated using swing Edi will be improved following initiation of bethanechol in infants with tracheobronchomalacia.
Timeframe: 7 days