Observations on tracheal mucociliary clearance in horses.
The rate of movement up the mucociliary escalator of Technetium99m tagged to macroaggregated albumin was measured in 7 normal horses and 8 with respiratory disease. The activity at 2 sites in the neck, separated by 12-15 cm, was measured using a hand held scintillation counter and rate meter. In normal horses the Technetium complex moved as a bolus up the neck with a mean rate of 1.58 cm/min. In the horses with respiratory disease the Technetium complex was less likely to move as a discrete bolus and in three horses it was not possible to measure the transport rate. The remainder had a mean transport rate of 1.19 cm/min.
D000818:Animals; D002923:Cilia / Q000502:physiology; D006734:Horse Diseases / Q000503:physiopathology*; D006736:Horses / Q000502:physiology*; D009093:Mucus / Q000502:physiology*; D012140:Respiratory Tract Diseases / Q000503:physiopathology / Q000662:veterinary*; D012588:Scintillation Counting; D014132:Trachea / Q000502:physiology* / Q000503:physiopathology