Record Display for the EPA National Library Catalog

RECORD NUMBER: 13 OF 33

OLS Field Name OLS Field Data
Main Title Frequency Dependence of Effective Nasal Resistance.
Author Fullton, J. M. ; Fischer, N. D. ; Drake, A. F. ; Bromberg, P. A. ;
CORP Author North Carolina Univ. at Chapel Hill. School of Medicine.;Health Effects Research Lab., Research Triangle Park, NC.
Year Published 1984
Report Number EPA-R-805184; EPA/600/J-84/169;
Stock Number PB85-144095
Additional Subjects Surgery ; Obstructions ; Models ; Pharmacology ; Reprints ; Nasal passages
Holdings
Library Call Number Additional Info Location Last
Modified
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Status
NTIS  PB85-144095 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. 06/23/1988
Collation 7p
Abstract
Forced random noise techniques were used to characterize the effective resistance of the nasal passages in normal subjects and subjects who were candidates for surgical correction of nasal obstruction. The slope of the effective resistance curve was characterized by the average resistances over 3 to 5 Hz and 13 to 15 Hz. Subjects with nasal obstruction had effective nasal resistance curves which were more frequency dependent than those of normal subjects (p<0.05). A mathematical model consisting of two series resistance-inertance elements in parallel was used to simulate the nasal passages. With this model the authors were able to generate effective resistance curves similar to those measured in both normal and obstructed subjects. The forced random noise technique may be a convenient, noninvasive technique for studying the fluid mechanical properties of airflow in the nasal passages and the effects of pharmacological and surgical interventions on nasal resistance.