Dynamic endoscopy is indicated when there is suspicion of upper airway disease despite a normal exam at rest.

• A. During Active Epistaxis
• B. When There Is Suspected Upper Airway Disease With Normal Resting Exam
• C. Before Any Imaging
• D. Only In Horses Over Ten Years Old

Answer: (B)

Dynamic endoscopy lets you watch the upper airway while it’s functioning, not just when it’s quiet at rest. That’s crucial when you suspect upper airway disease but the resting exam looks normal, because many problems only appear during activity—things like abnormal laryngeal movement or palate displacement occur under stress or during breathing hard, and they can be missed if you only look while the animal is calm.

So this scenario fits best: you have a suspicion of an upper airway issue despite a normal resting exam, and dynamic endoscopy provides the functional view needed to confirm or rule out those activity‑induced problems. It isn’t typically used during active epistaxis due to bleeding risk, it isn’t a prerequisite for imaging, and age isn’t the deciding factor for this test.