View Tag: ‘Air-Conduction Re-routing Systems’ Volume 10 A Narrative Review of Air-Conduction Re-routing Systems for Adults with Limited Useable Hearing Unilaterally by Erin Picou, AuD., PhD, CCC-A Clinical management of adults who have unilateral hearing loss can be difficult. The challenge might be even more significant for adults with limited useable hearing unilaterally.