[Plethysmography on patients with tracheal and laryngeal stenosis (author's transl)].

Body plethysmography developed from pulmonary physiology in recent years has application to measurement of nasal airway resistance. It is a practical method of measurement of resistance due to upper respiratory tract obstruction. A report on cases with stenosis of the trachea and larynx is here made and it shows that this is a suitable method to assess the indication for or results of surgery to the larynx or trachea.