How does the Flutter® work? When you breathe out through the Flutter® pressure builds up in your lungs . This helps to keep the airways open wide and also allows air to get behind sputum and help move it upwards.
How does a Flutter work?
How does the Flutter® work? When you breathe out through the Flutter® pressure builds up in your lungs . This helps to keep the airways open wide and also allows air to get behind sputum and help move it upwards.