对施行全喉切除术后的连续8例患者进行烟田测定。其中每隔一例患者全喉切除的同时有环咽肌切开。方法是，全喉切除后下咽暴露，将一食指插入食道人口，直视下辨认环咽肌并于前旁正中位锐性切开，切至食道粘膜，长度约4cm，然后用可吸收缝线连续缝合“T”型关闭咽腔。术后2周进 Tobacco fields were measured in 8 consecutive patients after total laryngectomy. Every other patient with total laryngectomy with cricopharyngeal muscle incision. Method is full laryngectomy after swallow exposure will be an index finger inserted into the esophagus population, under direct vision identify the cricopharyngeal muscle and in the anterior midline right sharp cut, cut to the esophageal mucosa, about 4cm in length, and then with the absorbable seam Continuous suture line “T” type closed pharynx. 2 weeks after surgery