Simulation model for transcervical laryngeal injection providing real-time feedback.

OBJECTIVE: This study aimed to develop and evaluate a model for teaching transcervical laryngeal injections. METHODS: A 3-dimensional printer was used to create a laryngotracheal framework based on de-identified computed tomography images of a human larynx. The arytenoid cartilages and intrinsic laryngeal musculature were created in silicone from clay casts and thermoplastic molds. The thyroarytenoid (TA) muscle was created with electrically conductive silicone using metallic filaments embedded in silicone. Wires connected TA muscles to an electrical circuit incorporating a cell phone and speaker. A needle electrode completed the circuit when inserted in the TA during simulated injection, providing real-time feedback of successful needle placement by producing an audible sound. Face validation by the senior author confirmed appropriate tactile feedback and anatomical realism. Otolaryngologists pilot tested the model and completed presimulation and postsimulation questionnaires. RESULTS: The high-fidelity simulation model provided tactile and audio feedback during needle placement, simulating transcervical vocal fold injections. Otolaryngology residents demonstrated higher comfort levels with transcervical thyroarytenoid injection on postsimulation questionnaires. CONCLUSION: This is the first study to describe a simulator for developing transcervical vocal fold injection skills. The model provides real-time tactile and auditory feedback that aids in skill acquisition. Otolaryngologists reported increased confidence with transcervical injection after using the simulator.

Quality of life of individuals with and without facial feminization surgery or gender reassignment surgery.

OBJECTIVES: To determine the self-reported quality of life of male-to-female (MTF) transgendered individuals and how this quality of life is influenced by facial feminization and gender reassignment surgery. METHODS: Facial Feminization Surgery outcomes evaluation survey and the SF-36v2 quality of life survey were administered to male-to-female transgender individuals via the Internet and on paper. A total of 247 MTF participants were enrolled in the study. RESULTS: Mental health-related quality of life was statistically diminished (P < 0.05) in transgendered women without surgical intervention compared to the general female population and transwomen who had gender reassignment surgery (GRS), facial feminization surgery (FFS), or both. There was no statistically significant difference in the mental health-related quality of life among transgendered women who had GRS, FFS, or both. Participants who had FFS scored statistically higher (P < 0.01) than those who did not in the FFS outcomes evaluation. CONCLUSIONS: Transwomen have diminished mental health-related quality of life compared with the general female population. However, surgical treatments (e.g. FFS, GRS, or both) are associated with improved mental health-related quality of life.