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AIRFLOW CHARACTERISTICS IN A BABOON NASAL PASSAGE CAST
Citation:
Patra, A., A. Gooya, AND K. Morgan. AIRFLOW CHARACTERISTICS IN A BABOON NASAL PASSAGE CAST. U.S. Environmental Protection Agency, Washington, D.C., EPA/600/J-86/547 (NTIS PB91109132), 1986.
Description:
Airflow patterns in the nasal Passages influence the distribution of air-pollutant-induced lesions in the airway mucosa. ittle is known about airflow characteristics or the complex nasopharyngeal airway of man and experimental animals. irflow characteristics in the nasopharyngeal airways of an adult male baboon (13.9 kg) were investigated with thermistor probes and the findings compared with flow visualization, using a time-photographic technique. lear, acrylic, hollow cast of a baboon nose was made, and thermistor probes were inserted to record air velocity in the cast lumen using a wind tunnel propel air through the cast. n identical cast was studied by passing water through the cast and using pulses of blue dye to reveal flow patterns, and then velocities and flow patterns were determined from time film with analytic projector. low rates showed good correlations between the two methods, whereas time-photography revealed areas of turbulence and vortexlike flow. hese results suggest that water flow may provide useful information in complex airways where airflow cannot be determined.