The study on the position in airflow influx of esophageal phonation after total laryngectomy

Objective To discuss the best position of the phonation prosthesis after total laryngectomy and the possible way to improve method.Methods All objects were chosen from the patients with laryngeal carcinoma and received total laryngectomy.22 patients were randomly chosen from obtained Blom-Singer phonation rehabilitation.Among them 12 cases who can speak defined as speech group and 10 cases who can not speak defined as nonspeech group.In addition,we chose randomly 9 patients who did not obtained phonation rehabilitation after total laryngectomy defined as contrast group.We measured the pressure of upper intraesophagus,esophagus insufflation test and evaluated the characteristics of speech respectively.Results There was lower pressure and no significant difference 1 cm below entrance of esophagus among the three groups.The esophageal insufflation test suggest there was phonation area 0.5-2 cm below entrance of esophagus among the three group,in which we can find the best phonation position.Conclusion The pressure of upper intraesophagus is the main factor for failure to obtain phonation.