[Experimental research of resistance to air currents in laryngeal-tracheal specimens (author's transl)].

Flow resistance to air currents was experimentally determined in 69 human laryngeal-tracheal specimens. Vocal cords were held bilaterally in the paramedium position, simulating bilateral recurrent nerve paralysis, and in five other positions following certain surgical interventions. It was found that under simulated physiological conditions (inspiratory position) as well as in the presence of a simulated recurrent nerve paralysis, the laryngeal flow resistance depended on individual factors, i.e., form and size of each specimen. Different degrees of improvement occurred with various surgical methods. Based on the discussion of the experimental results, clinical conclusions are offered.