4704c, air, airway, airways, asphyxiation, blockage, blockages, blocked, blocking, blocks, capped, caput, collapsed, cuffed, distress, exh4704c, head, heads, healthy, impair, impaired, impairing, impede, impeded, impedes, impeding, intubate, intubated, intubation, intubations, miller, neck, occluded, occluding, occlusions, otolaryngology, otorhinolaryngocology, passages, placement, respiration, respiratory, respire, sinus, sinuses, suffocation, throat, trachea, tracheas, tracheostomy, tracheotomy, tube, tubes, upper, ways, 97