![]() It sends filaments also to the inferior pharyngeal constrictor and gives off a. It is active during swallowing, and partially during breathing and speech. It arises from the sides of the cricoid cartilage and the thyroid cartilage. Electromyography (EMG) of the inferior pharyngeal constrictor (IC) and the cricopharyngeal (CP) muscle was recorded in 18 patients with swallowing and/or. It is the thickest of the three outer pharyngeal muscles. Conclusions: IMRT dose to the inferior constrictor correlated with persistent dysphagia requiring prolonged PEG use. It supplies motor fibres to the muscles of the pharynx and of the soft. The inferior pharyngeal constrictor muscle is a skeletal muscle of the neck. ![]() V 40 to the inferior constrictor also correlated with PEG >12 months (p = 0.02) with a mean V 40 of 48% versus 41% for PEG ⩽12 months. Mean dose (of individual mean doses) was 47 Gy for prolonged PEG use versus 41 Gy for PEG ⩽12 months. Only IMRT dose to the inferior constrictor was significantly associated with length of PEG. Mean and median time for PEG was 7.7 and 4.4 months respectively (range 1.4–43.8). Inferior pharyngeal constrictor muscle causing pharyngeal dystonia was not targeted, because CPD was initially suspected and injection was performed only on cricopharyngeus muscle. Results: Approximately 62% of patients required PEG, the majority placed during treatment. CN X Inferior pharyngeal constrictor (laryngopharynx) Thyropharyngeus (superior component) The lamina of the thyroid cartilage Constricts the. Analysis of IMRT dose was retrospectively performed for critical swallowing structures. Middle pharyngeal constrictor (laryngopharynx) The stylohyoid ligament The lesser and greater horns of the hyoid bone Constricts the middle part of the pharynx Transfer of food to the esophagus. ![]() Late dysphagia was assessed by length of PEG requirement. Methods and materials: A retrospective study was performed on 141 consecutive patients with LAHNC (squamous cell) treated with definitive chemoIMRT with weekly concurrent carboplatin and paclitaxel. Background and purpose: To determine if dose and/or dose-volume parameters to anatomic swallowing structures are predictive of gastrostomy tube (PEG) dependence from chemotherapy-intensity modulated radiotherapy (IMRT) in locally advanced head and neck cancer (LAHNC). It is well known that three external circular muscles (superior constrictor SC, middle constrictor MC, inferior constrictor IC) act as the sphincter, and three internal longitudinal muscles (the stylopharyngeus STP, palatopharyngeus, and salpingopharyngeus) elevate the pharynx. ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |