The Vest after a Tonsillectomy

Does anyone know if it is safe to use your The Vest following a tonsillectomy? Our 7 year old CFer had his tonsils out yesterday and the ENT has no expericence as to whether this would be to much movement and create an issue. Our son woke of this morning coughing up a lot of crap, so I would like to use it.
Source: Cystic Fibrosis Airway Clearance Techniques Forum - Category: Respiratory Medicine Authors: Tags: Airway Clearance Techniques Source Type: forums