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Partitioning of large and small airway resistance in human measured by an anterograde catheter with a tip micromanometer. 1988

T Takishima, and M Yanai, and K Sekizawa, and T Ohrui, and H Sasaki, and M Takahashi, and H Ozawa
First Department of Internal Medicine, Tohoku University School of Medicine, Sendai.

We measured lateral pressure in airways 3 mm in internal diameter in three normal subjects using an anterograde catheter with a tip micromanometer. The pressure was used to partition total pulmonary resistance into a large airway resistance component between the mouth and the pressure sensor and a small airway resistance component between the pressure sensor and alveoli. Large airway resistance and small airway resistance during inspiration were 2.3 +/- 0.4 and 0.9 +/- 0.2 cmH2O/liter/sec (mean +/- S.E.), respectively, and small airway resistance was 29% of the total pulmonary resistance. We suggest that the present technique may be useful for determining the localization of airway resistance in human subjects.

UI MeSH Term Description Entries
D008168 Lung Either of the pair of organs occupying the cavity of the thorax that effect the aeration of the blood. Lungs
D008875 Middle Aged An adult aged 45 - 64 years. Middle Age
D002406 Catheterization, Peripheral Insertion of a catheter into a peripheral artery, vein, or airway for diagnostic or therapeutic purposes. Arterial Catheterization, Peripheral,Catheterization, Bronchial,Catheterization, Peripheral Arterial,Catheterization, Peripheral Venous,Peripheral Catheterization,Venous Catheterization, Peripheral,Bronchial Catheterization,PICC Line Catheterization,PICC Line Placement,PICC Placement,Peripheral Arterial Catheterization,Peripheral Venous Catheterization,Peripherally Inserted Central Catheter Line Insertion,Arterial Catheterizations, Peripheral,Bronchial Catheterizations,Catheterization, PICC Line,Catheterizations, Bronchial,Catheterizations, PICC Line,Catheterizations, Peripheral,Catheterizations, Peripheral Arterial,Catheterizations, Peripheral Venous,PICC Line Catheterizations,PICC Line Placements,PICC Placements,Peripheral Arterial Catheterizations,Peripheral Catheterizations,Peripheral Venous Catheterizations,Placement, PICC,Placement, PICC Line,Placements, PICC,Placements, PICC Line,Venous Catheterizations, Peripheral
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000328 Adult A person having attained full growth or maturity. Adults are of 19 through 44 years of age. For a person between 19 and 24 years of age, YOUNG ADULT is available. Adults
D000403 Airway Resistance Physiologically, the opposition to flow of air caused by the forces of friction. As a part of pulmonary function testing, it is the ratio of driving pressure to the rate of air flow. Airway Resistances,Resistance, Airway,Resistances, Airway

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