[Compensatory mechanisms of food transmission and lower respiratory tract protection after classical and extended supraglottic laryngectomies. Computerized topokinetic analysis of roentgen-cinematographic images].

Studies were performed on 22 patients, aged from 17 to 78 years, in whom, owing to laryngeal cancers, partly classical or extended supraglottic laryngectomy was carried out. The evaluation involving the pharyngeal deglutition course was accomplished by resorting to computerized topokinetic analysis of the roentgen-cinematographic images. The completed observation revealed good mobility of the anatomical structures participating in deglutition, small volume and number of glossolaryngeal recesses. There were few patients in whom the contrast medium passed to the trachea. Better passage of food as well as protection of lower respiratory tract were associated with the improvement of parameters facilitating the deglutition.