Abstract
For the past ten years, a very active research on a considerable amount of fundamental functional investigation has been concenrated in progress. But much still remains to be accomplished to make objective testing of nasal functions. Obtaining only standard values of nasal patency but also standardized measure- ments for rhinomanometry is important, wheras, we reported aberrations. Aberrations: There are six major aberrations of pressure which have been clearly delineated. I. Irregular: Irregularities of breathing pattern rhythms, amplitudes, frequency and reversals of the ratios of pressures during inspiration and expiration are frequently noted and usually denote local derangements in the nose. II. Increase: Marked increase in breathing pressure practically always means a nasal obstruction and is especially predominant if the stenosis is in the area of the nasal valves. Elevations of pressure mean increase in the work of breathing. III. Flat top: The outstanding characteristic of the pressure curves is the fact that the pressure level at the height of expiration persists for 3 to 5 seconds more. IV. Suppression: The inspiration and expiration pressures are low ranging between 3 to 5 millimeters of water and sometimes even less. These are frequently found among old patients. V. M. C. R.: After each breathing cycle is completed there is a pause during which there is no inspiration or expiration, no positive or negative pressure. This pause often lasts for 3 to 5 seconds and in extreme instances has been noted to last from 5 to seconds. We have referred to this pause as a midcycle rest (M. C. R.). VI. Others
