title: Technical variations in clinical ostial patency tests.
abstract: The usefulness of nasopharyngeal-antral pressure difference recording as a part of clinical ostial patency testing is demonstrated by statistical calculations from 507 patency tests. This method offers a quick confirmation of the comparison of pressure variation measured by anterior rhinomanometry and by antral pressure recordings which are the main elements of a consecutive patency test. In addition, the nasopharyngeal-antral recording has many of the advantages of a simultaneous patency test. When this difference recording is applied, the nasal reference pressure recording can also be omitted without any loss of information sought by the patency test.
mesh_terms: D006801:Humans; D008365:Manometry; D008443:Maxillary Sinus / Q000502:physiology*; D008722:Methods; D009305:Nasopharynx / Q000502:physiology*; D011312:Pressure