Hypoglossal Nerve Stimulator Explantation: A Case Series.

Hypoglossal nerve stimulation (HGNS) has emerged as a successful surgical treatment strategy for moderate to severe obstructive sleep apnea in patients failing first-line positive airway pressure therapy. HGNS explantation due to adverse events such as pain and infection is rare and has yet to be well described. Here, our correspondence describes the first case series of patients who have undergone explantation of the Inspire HGNS system. Five patients were identified who underwent HGNS explantation. Three patients underwent explantation due to magnetic resonance imaging (MRI) incompatibility. One patient underwent explantation due to poor cosmesis. One patient underwent explantation due to surgical site infection. Average operative explant time was 163 minutes. MRI incompatibility, poor cosmesis, and device-related infection are reasons for HGNS explantation. Future need for MRI or chest wall surgery should be considered in patients being evaluated for HGNS implants.

Evaluation of In-Office Volitional Snore as a Screening Tool for Candidacy for Hypoglossal Nerve Stimulation.

Candidacy evaluation for hypoglossal nerve stimulation (HGNS) is resource intensive. This proof-of-concept study investigates use of in-office volitional snore during flexible laryngoscopy as an efficient, cost-effective screening tool for HGNS evaluation. Adults with moderate to severe obstructive sleep apnea that failed continuous positive airway pressure treatment (n = 41) underwent evaluation for HGNS from 2018 to 2019. Volitional snore and drug-induced sleep endoscopy (DISE) data were collected and scored by VOTE classification (velum/palate, oropharynx, tongue base, epiglottis). A chi-square test of independence was performed that demonstrated a significant relationship between volitional snore and DISE (χ2 = 4.39, P = .036) for velum collapse pattern. Sensitivity and specificity of volitional snore for detecting velum collapse pattern were 93.6% (95% CI, 75.6%-99.2%) and 40% (95% CI, 12.2%-73.8%), respectively, illustrating its utility in screening for HGNS. Patients who demonstrate anterior-posterior velum collapse on volitional snore may be excellent candidates for confirmatory DISE at the time of HGNS implantation.

Improving outcomes of hypoglossal nerve stimulation therapy: current practice, future directions, and research gaps. Proceedings of the 2019 International Sleep Surgery Society Research Forum.

Hypoglossal nerve stimulation (HGNS) has evolved as a novel and effective therapy for patients with moderate-to-severe obstructive sleep apnea. Despite positive published outcomes of HGNS, there exist uncertainties regarding proper patient selection, surgical technique, and the reporting of outcomes and individual factors that impact therapy effectiveness. According to current guidelines, this therapy is indicated for select patients, and recommendations are based on the Stimulation Therapy for Apnea Reduction or STAR trial. Ongoing research and physician experiences continuously improve methods to optimize the therapy. An understanding of the way in which airway anatomy, obstructive sleep apnea phenotypes, individual health status, psychological conditions, and comorbid sleep disorders influence the effectiveness of HGNS is essential to improve outcomes and expand therapy indications. This article presents discussions on current evidence, future directions, and research gaps for HGNS therapy from the 10th International Surgical Sleep Society expert research panel. CITATION: Suurna MV, Jacobowitz O, Chang J, et al. Improving outcomes of hypoglossal nerve stimulation therapy: current practice, future directions and research gaps. Proceedings of the 2019 International Sleep Surgery Society Research Forum. J Clin Sleep Med. 2021;17(12):2477-2487.

Sleep medicine in otolaryngology units: an international survey.

PURPOSE: No study to date has described the overall landscape of sleep disorders management and training in otolaryngology departments of different countries. The aim of our study was to investigate and compare settings, diagnostic and therapeutic approaches and training programmes. METHODS: An international online survey was developed with the collaboration of the YO-IFOS (Young Otolaryngologists-International Federation of Otorhinolaryngological Societies) to assess the current practice of otolaryngologists in the management of sleep disorders. The survey also included a session dedicated to training. RESULTS: A total of 126 otolaryngologists completed the survey. The larger part of responses was collected from Central/South America and Europe. The majority of responders from South/Central America (97%) declared to be certified as sleep specialist while 49% of Europeans stated the opposite. Of responders 83% perform a drug-induced sleep endoscopy (DISE) before planning a possible surgical intervention. Soft palate and base of tongue interventions were the most common procedure, respectively performed in 94% and 79% of the cases. Residents were allowed to perform soft palate surgery in 77% of the cases. Upper airway stimulation (26% vs 10%), trans-oral robotic surgery (36% vs 11%) and radiofrequency of the base of the tongue (58% vs 25%) were preferred more frequently by European responders. The highest caseloads of soft palate surgery and bi-maxillary advancement were registered in the academic institutions. CONCLUSION: Significant concordance and few interesting divergences in diagnosis and treatment of sleep disorders were observed between nationalities and types of institution. Economic resources might have played a significant role in the therapeutic choice. Trainees' lack of exposure to certain interventions and to a sufficient caseload appeared to be the main burden to overcome.

The Rise of Upper Airway Stimulation in the Era of Transoral Robotic Surgery for Obstructive Sleep Apnea.

Introduced in 2010, transoral robotic surgery (TORS) is recognized as an effective treatment of moderate to severe obstructive sleep apnea (OSA) in the setting of lymphoid and muscular tongue base hypertrophy. Upper airway stimulation (UAS) or hypoglossal nerve stimulation has emerged as a promising treatment of patients with moderate to severe OSA who have failed continuous positive airway pressure. UAS has shown favorable success rates and low morbidity compared with traditional soft tissue and skeletal framework surgery. UAS is in its infancy as a surgical procedure and concerns exist regarding narrow candidacy criteria, postimplant device titration, and durability of treatment response.

Machine Learning Diagnosis of Peritonsillar Abscess.

Peritonsillar abscess (PTA) is a difficult diagnosis to make clinically, with clinical examination of even otolaryngologists showing poor sensitivity and specificity. Machine learning is a form of artificial intelligence that "learns" from data to make predictions. We developed a machine learning classifier to predict the diagnosis of PTA based on patient symptoms. We retrospectively collected clinical data and symptomatology from 916 patients who underwent attempted needle aspiration for PTA. Machine learning classifiers were trained on a subset of the data to predict the presence or absence of purulence on attempted aspiration. The performance of the model was evaluated on a holdout set. The accuracy of the top-performing algorithm, the artificial neural network, was 72.3%. Artificial neural networks can use patient symptoms to exceed human ability to predict PTA in patients with clinical suspicion for PTA. Similar models can assist medical decision making for clinicians who have suspicion of PTA.

Acceptability of palliative care approaches for patients with severe and persistent mental illness: a survey of psychiatrists in Switzerland.

BACKGROUND: Some patients develop severe and persistent mental illness (SPMI) which is therapy-refractory. The needs of these patients sometimes remain unmet by therapeutic interventions and they are at high risk of receiving care that is inconsistent with their life goals. Scholarly discourse has recently begun to address the suitability of palliative care approaches targeting at enhancing quality of life for these patients, but remains to be developed. METHOD: A cross-sectional survey asked 1311 German-speaking psychiatrists in Switzerland (the total number of German-speaking members of the Swiss Society for Psychiatry and Psychotherapy) about the care of SPMI patients in general, and about palliative care approaches in particular. 457 (34.9%) returned the completed survey. In addition, participants were asked to evaluate three case vignettes of patients with SPMI. RESULTS: The reduction of suffering and maintaining daily life functioning of the patient were rated as considerably more important in the treatment of SPMI than impeding suicide and curing the underlying illness. There was broad agreement that SPMI can be terminal (93.7%), and that curative approaches may sometimes be futile (e.g. 72.4% for the anorexia nervosa case vignette). Furthermore, more than 75% of the participating psychiatrists were in favour of palliative care approaches for SPMI. CONCLUSIONS: The results of the present study suggest that the participating psychiatrists in Switzerland regard certain forms of SPMI as posing high risk of death. Additionally, a majority of respondents consider palliative care approaches appropriate for this vulnerable group of patients. However, the generalizability of the results to all psychiatrists in Switzerland or other mental health professionals involved in the care of SPMI is limited. This limitation is important considering the reservations towards palliative care in the context of psychiatric illness, mainly because of the association with death and futility. Palliative care approaches, however, are applicable in conjunction with other therapies intended to prolong life. A next step could be to involve service users and develop a consensus of what palliative care might encompass in SPMI. A framework for identifying which patients might benefit from palliative care, should be explored for the future development of care for SPMI patients.

Drug-Induced Sleep Endoscopy and Surgical Outcomes: A Multicenter Cohort Study.

OBJECTIVE: To evaluate the association between findings of blinded reviews of preoperative drug-induced sleep endoscopy (DISE) examinations using the VOTE Classification and obstructive sleep apnea (OSA) surgical outcomes in a large multicenter, international cohort. METHODS: Retrospective, multi-center cohort study of adults without tonsillar hypertrophy who underwent pharyngeal surgery for OSA. The study included only participants without enlarged tonsils. Four independent reviewers performed blinded review of preoperative DISE videos using the VOTE Classification system and scoring of a primary structure contributing to airway obstruction. DISE findings were examined for an association with surgical outcomes with univariate analyses and multiple regression. RESULTS: Two hundred seventy-five study participants were included from 14 centers. Mean age was 51.4 ± 11.8 years, and body mass index was 30.1 ± 5.2 kg/m2 . There was moderate interrater reliability (kappa = 0.40-0.60) for DISE findings. Oropharyngeal lateral wall-related obstruction was associated with poorer surgical outcomes (adjusted odds ratio (AOR) 0.51; 95% CI 0.27, 0.93). Complete tongue-related obstruction was associated with a lower odds of surgical response in moderate to severe OSA (AOR 0.52; 95% CI 0.28, 0.98), with findings that were similar but not statistically significant in other analyses. Surgical outcomes were not clearly associated with the degree and configuration of velum-related obstruction or the degree of epiglottis-related obstruction. Surgical response was associated with tonsil size and body mass index (inversely). CONCLUSION: DISE findings concerning the oropharyngeal lateral walls and tongue may be the most important findings of this evaluation technique. LEVEL OF EVIDENCE: 2B Laryngoscope, 129:761-770, 2019.

Trans-Oral Robotic Tongue Reduction for OSA: Does Lingual Anatomy Influence the Surgical Outcome?

STUDY OBJECTIVES: To evaluate both the influence of the volume of the excised base of tongue (BOT) on the surgical outcome after robotic tongue reduction in patients affected by obstructive sleep apnea (OSA) and the role of the lymphatic or muscular predominance within the removed tissue. METHODS: Fifty-one patients with OSA were included in this study. All patients were treated with a robotic tongue base reduction. Data registered for the analysis were: age, sex, preoperative body mass index, preoperative and postoperative apnea-hypopnea index (AHI), delta AHI (preoperative AHI - postoperative AHI), total volume of the excised BOT, total thickness of excised BOT, isolated lymphatic thickness and soft tissue thickness (including muscular component) of the excised BOT, and lymphatic/soft tissue ratio (lymphatic thickness / soft tissue thickness). RESULTS: A statistically significant reduction of AHI values was seen postoperatively, and a success rate of 74.5% was recorded. However, no significant correlations between delta AHI and tongue volume in cubic centimeters, lymphatic/soft tissue ratio, and total thickness were found. CONCLUSIONS: These findings reinforce the general opinion that OSA is not only influenced by anatomic factors but other phenomena may play a fundamental role in its genesis. A deeper understanding of OSA pathogenesis is needed in order to tailor an individual treatment strategy that could lead to a more effective therapy.

Friedman tongue position and cone beam computed tomography in patients with obstructive sleep apnea.

Objective: Evaluate the correlation between Friedman Tongue Position (FTP) and airway cephalometrics in patients with obstructive sleep apnea (OSA). Study Design: Retrospective review of adult patients with OSA undergoing Cone Beam Computed Tomography (CBCT). Methods: Collected data included age, sex, body mass index, apnea hypopnea index, FTP, and airway cephalometric parameters. Data analyses were performed using ANOVA, dichotomous t-testing, and linear regression. Results: 203 patients were included in the analysis. (M:F 132:71). The mean posterior airway space (PAS) was inversely correlated (p = 0.001, r =.119) with higher FTP grades with means of 12.3 mm, 7.9 mm, 6.6 mm, and 4.3 mm, I-IV respectively. Minimal cross-sectional area for patients with FTP I-IV was 245.7, 179.8, 137.6, and 74.2 mm, 2 respectively (p = 0.002, r = .095). Mean hyoid-mandibular plane (H-MP) for FTP I-IV was 20.6 mm, 20.4 mm, 24.7 mm, and 28.9 mm respectively. No statistically significant difference between H-MP values when comparing patients with FTP I or II (p = 0.22). There were statistically significant differences when these two groups were individually compared to FTP III and IV (p = 0.002). Linear regression analysis confirmed an independent association between FTP and PAS (ß = -2.06, p < 0.001), minimal cross-sectional area (ß = -45.07, p = 0.02), and H-MP (ß = 3.03, p = 0.01) controlling for BMI, age, AHI, and sex. Conclusions: Use of FTP is supported by objective CBCT cephalometric results, in particular the PAS, minimal cross-sectional area, and H-MP. Understanding the correlation between objective measurements of retroglossal collapse should allow Otolaryngologists to more confidently select patients who may require surgery to address the retroglossal area, particularly when the ability to perform cephalometric analysis is not possible. Level of Evidence: 4.

Transoral robotic-assisted tongue base resection in pediatric obstructive sleep apnea syndrome: case presentation, clinical and technical consideration.

Pediatric obstructive sleep apnea syndrome (OSAS) is primarily caused by adenotonsillar hypertrophy. However, tongue base hypertrophy is increasingly being recognized as a cause, even after adenotonsillectomy. We report three cases of pediatric OSAS successfully treated by transoral robotic reduction of the tongue base. In all children, we were able to achieve improved retrolingual patency while avoiding significant procedure-related morbidity. In conclusion, tongue base reduction by transoral robotic surgery appears to be a feasible solution for the base of tongue obstruction due to lingual tonsil hypertrophy in pediatric patients.

Does drug-induced sleep endoscopy predict surgical success in transoral robotic multilevel surgery in obstructive sleep apnea?

OBJECTIVES/HYPOTHESIS: The aim of this study was to determine if drug-induced sleep endoscopy (DISE) was predictive of success for patients undergoing transoral robotic surgery (TORS) and multilevel procedures for sleep apnea. STUDY DESIGN: Retrospective case series of patients who underwent TORS surgery for sleep apnea METHODS: Before and after polysomnograms were analyzed to assess improvement, success, and cure. Improvement was defined as any decrease in apnea-hypopnea index (AHI), success as an AHI <20 with a decrease >50%, and cure as an AHI <5. DISE videos were scored using the NOHL (nose, oropharynx, hypopharynx, larynx) and VOTE (velum, oropharynx, tongue, epiglottis) classification systems. RESULTS: One hundred one patients were available for analysis. Eighty-seven percent of patients had an improvement in their AHI. Fifty-one percent met criteria for success, whereas 17% were cured. The degree of collapse at individual NOHL and VOTE subsites as well as total additive scores did not predict improvement, success, or cure. Patients with no oropharyngeal lateral collapse in the VOTE classification system were more likely to improve following surgery (P = .001); however, this effect did not hold for success or cure. Multivariate analysis of DISE variables was not predictive of success. CONCLUSIONS: In obstructive sleep apnea patients, there is a 51% success rate and a 17% cure rate. DISE, as scored by the NOHL and VOTE system, did not readily identify patients who would benefit most from surgery. Patients with lateral oropharyngeal collapse may be poorer candidates. Prospective, larger studies are required to further evaluate the use of DISE in predicting success following TORS. LEVEL OF EVIDENCE: 4 Laryngoscope, 127:971-976, 2017.

Palliative psychiatry for severe persistent mental illness as a new approach to psychiatry? Definition, scope, benefits, and risks.

BACKGROUND: As a significant proportion of patients receiving palliative care suffer from states of anxiety, depression, delirium, or other mental symptoms, psychiatry and palliative care already collaborate closely in the palliative care of medical conditions. Despite this well-established involvement of psychiatrists in palliative care, psychiatry does not currently explicitly provide palliative care for patients with mental illness outside the context of terminal medical illness. DISCUSSION: Based on the WHO definition of palliative care, a, a working definition of palliative psychiatry is proposed. Palliative psychiatry focuses on mental health rather than medical/physical issues. We propose that the beneficiaries of palliative psychiatry are patients with severe persistent mental illness, who are at risk of therapeutic neglect and/or overly aggressive care within current paradigms. These include long-term residential care patients with severe chronic schizophrenia and insufficient quality of life, those with therapy-refractory depressions and repeated suicide attempts, and those with severe long-standing therapy-refractory anorexia nervosa. An explicitly palliative approach within psychiatry has the potential to improve quality of care, person-centredness, outcomes, and autonomy for patients with severe persistent mental illness. CONCLUSIONS: The first step towards a palliative psychiatry is to acknowledge those palliative approaches that already exist implicitly in psychiatry. Basic skills for a palliative psychiatry include communication of diagnosis and prognosis, symptom assessment and management, support for advance (mental health) care planning, assessment of caregiver needs, and referral to specialized services. Some of these may already be considered core skills of psychiatrists, but for a truly palliative approach they should be exercised guided by an awareness of the limited functional prognosis and lifespan of patients with severe persistent mental illness.

Addressing the Retrolingual Space in Obstructive Sleep Apnea: Outcomes Stratified by Friedman Stage in Patients Undergoing Transoral Robotic Surgery.

BACKGROUND/AIMS: To stratify outcomes in patients with moderate to severe obstructive sleep apnea-hypopnea syndrome (OSAHS) undergoing transoral robotic surgery (TORS) ± multilevel procedures according to Friedman stage. METHODS: A total of 118 patients with moderate to severe OSAHS between 2010 and 2013 were stratified preoperatively by Friedman stage. All patients had TORS-assisted lingual tonsillectomy, either stand-alone or in combination with palatal surgery. Apnea-hypopnea index (AHI) was measured preoperatively and 3 months postoperatively. Success was defined as a decrease in AHI by 50% and AHI <20. RESULTS: The average pre- and postoperative AHI was 43.0 and 22.6, respectively, and the overall success rate was 63%. When stratifying by Friedman stage, success was seen in 75% of stage I, 70% of stage II, 66% of stage III, and 10% of stage IV patients. When stratifying by preoperative BMI, success was seen in 75% of stage II and 72% of stage III patients with BMI <30, compared to 58% of stage II and 56% of stage III patients with BMI >30. CONCLUSIONS: TORS-assisted lingual tonsillectomy ± multilevel procedures can be successful in treating patients with moderate to severe OSAHS with Friedman stage I-III anatomy. Success rates are even greater if patients are stratified according to preoperative BMI, as those with BMI <30 are more likely to achieve success even with Friedman stage II-III anatomy.

Evaluation of Salivary Transcriptome Markers for the Early Detection of Oral Squamous Cell Cancer in a Prospective Blinded Trial.

BACKGROUND: Oral squamous cell cancer (OSCC) is often diagnosed in late stages. Informative biomarkers could play a key role in early diagnosis. Prior case-control studies identified discriminatory salivary mRNA markers for OSCC. The National Cancer Institute (NCI) recommends prospective-specimencollection, retrospective-blinded-evaluation (PRoBE) design study for rigorous biomarker identification and validation. METHODS: A PRoBE design study enrolled 170 patients with lesions suspicious for OSCC. Saliva was collected before performing oral biopsy. Six pre-specified oral-cancer-associated mRNAs (IL1ß, IL8, OAZ1, SAT, S100P, and DUSP1) and five housekeeping mRNAs (MT-ATP6, RPL30, RPL37A, RPL0, and RPS17) were measured by quantitative polymerase chain reaction (PCR) without knowledge of tissue diagnosis. A pre-specified multi-marker panel from prior NCI - Early Detection Research Network (EDRN) studies was evaluated in this new PRoBE dataset. Individual marker cycle thresholds (Ct) from PCR were also compared in cancer versus control, and new discriminatory models were generated. RESULTS: The EDRN model was validated based on pre-specified statistical analysis plan. Ct values of individual mRNAs reflect an approximately twofold to nearly fourfold increase in concentration in invasive OSCC (P less than 0.01 for all). A new model from this intended-use population with incorporation of housekeeping genes demonstrates a maximal sum of sensitivity and specificity of 150.7% with an area under the receiver operating characteristic (ROC) curve of over 0.85. CONCLUSION: The validation of six pre-specified individual salivary transcriptome markers of OSCC and a pre-specified multi-marker model in a new prospective population supports the robustness of these markers and the multi-marker methodology. New models generated in this intended-use population have the potential to further enhance the decision process for early biopsy. Lesions at very low risk for cancer could be identified noninvasively as could those at significantly increased risk. Further study is necessary to assure effective implementation of this technology into routine clinical practice.

Transoral robotic surgery in benign diseases including obstructive sleep apnea: Safety and feasibility.

OBJECTIVES/HYPOTHESIS: To evaluate the safety and feasibility of the da Vinci Surgical System in transoral robotic-assisted surgery for benign indications. STUDY DESIGN: A multicenter, single-arm, retrospective case series. METHODS: Perioperative outcomes were recorded for patients presenting with obstructive sleep apnea, airway obstruction, lingual tonsillar/tonsillar/tongue base hypertrophy, or dysphagia who underwent one or more transoral procedures, including lingual tonsillectomy and tongue base resection (partial glossectomy) at one of three US institutions. RESULTS: Between January 2010 and October 2013, 285 patients (age 51.5 years, body mass index 30.5 kg/m(2) ) underwent 293 procedures. No conversions or blood transfusions were needed. The average operative time was 86.7 minutes, and the average volume of tissue resected (lingual tonsil and tongue base) was 8.3 mL. Hospital stays averaged 1.8 days, and the postoperative complication rate was 20.7%. There were no complications specifically related to the use the da Vinci Surgical System, and none of the complications were life threatening. CONCLUSIONS: These results demonstrate that it is safe and feasible to use the da Vinci Surgical System to perform lingual tonsillectomy and base of tongue resection (partial glossectomy) procedures for benign indications. LEVEL OF EVIDENCE: 4

Body mass index predicts success in patients undergoing transoral robotic surgery for obstructive sleep apnea.

OBJECTIVE: To determine the predictors of success in patients undergoing transoral robotic surgery (TORS) and multilevel procedures for the management of moderate-to-severe obstructive sleep apnea hypopnea syndrome (OSAHS). METHODS: A total of 121 patients (83 male, 38 female) underwent TORS between 2010 and 2013. All patients had robotic assisted lingual tonsillectomy, either as stand-alone surgery or in combination with palatal Z-plasty, lateral pharyngoplasty or uvulopalatopharyngoplasty. The apnea-hypopnea index (AHI) and body mass index (BMI) were measured preoperatively and 3 months postoperatively. Success was defined as AHI <20 and a decrease in AHI by 50%. RESULTS: There was a significant difference in the preoperative and postoperative AHI in the entire cohort (42.7 vs. 22.2; p < 0.001). Overall, 84.3% of patients had an improvement in their AHI, 51.2% of patients met the criteria for success, and 14% met the criteria for cure defined as AHI <5. When stratifying by BMI, there was a significant difference in success when comparing patients with a BMI <30 versus those with a BMI >30 (69.4 vs. 41.7%; p = 0.004). The cure rate was 15.3% in patients with a BMI <30 and 11.1% in those with a BMI >30 (p = 0.54). CONCLUSIONS: TORS lingual tonsillectomy and multilevel procedures were successful in treating moderate-to-severe OSAHS in selected patients. Preoperative BMI helps the clinician to predict success in these patients, with two thirds of patients having a clinically useful benefit.

Transoral robotic surgery for obstructive sleep apnea: perioperative management and postoperative complications.

IMPORTANCE: Patients who undergo surgery for obstructive sleep apnea (OSA) have acceptable perioperative morbidity that is similar to that seen in other sleep-related surgical procedures. OBJECTIVE: To perform the first large-scale evaluation of perioperative management and postoperative complications in patients who undergo transoral robotic surgery (TORS) for OSA. DESIGN, SETTING, AND PARTICIPANTS: Retrospective cohort study from 2010 to 2013 of 166 adult patients with moderate to severe OSA (defined as apnea-hypopnea index, >20) who had experienced failure of conventional therapy with positive airway pressure and underwent TORS at an academic practice with follow-up greater than 3 months. INTERVENTIONS: Transoral robotic surgery with or without additional multilevel airway procedures. MAIN OUTCOMES AND MEASURES: Major and minor complication rates. RESULTS: There were 122 men and 44 women with a mean (SD) age of 54.6 (12.3) years. The mean (SD) American Society of Anesthesiologists (ASA) score was 2.3 (0.5). There were 11 major complications, including secondary bleeding requiring intervention (7 patients), pulmonary embolism requiring anticoagulation therapy (2 patients), aspiration requiring prolonged hospitalization (1 patient), and dysphagia resulting in gastrostomy tube dependence (1 patient). There were 32 minor complications, including dehydration and/or uncontrolled pain (16 patients), globus sensation (8 patients), bleeding (5 patients), lip burn (2 patients), and pharyngeal laceration during intubation (1 patient); the majority resolved without sequelae. Preoperative ASA score (P = .003) and number of procedures performed (P = .004) predicted a postoperative complication. Age (P = .29), body mass index (P = .55), apnea-hypopnea index (P = .67), lowest arterial oxygen saturation (P = .63), number of comorbidities (P = .46), and individual comorbidities did not predict a complication. CONCLUSIONS AND RELEVANCE: Transoral robotic surgery can be safely performed in patients with OSA with an acceptable complication rate. Complications are similar to those seen with other surgical treatments of OSA and were only predicted by ASA score and number of procedures performed.

Clinical outcomes and complications associated with TORS for OSAHS: a benchmark for evaluating an emerging surgical technology in a targeted application for benign disease.

BACKGROUND: The aim of this study was to create benchmarks for evaluating clinical outcomes and complications of transoral robotic surgeries (TORS) in a multicenter setting. METHODS: 243 TORS for obstructive sleep apnea/hypopnea syndrome (OSAHS) operations, carried out between 2008 and 2012, were analyzed at 7 different centers. The average hospitalization was 3.5 days. The mean patient age was 50 ± 12 years, the average BMI at the time of the procedure was 28.53 ± 3.87 and the majority of the patients were men (81%). RESULTS: The mean preoperative and postoperative apnea/hypopnea index was 43.0 ± 22.6 and 17.9 ± 18.4, respectively (p < 0.001). The mean preoperative and postoperative Epworth Sleepiness Scale score was 12.34 ± 5.19 and 5.7 ± 3.49, respectively (p < 0.001). The mean pre- and postoperative lowest O2 saturation was 79.5 ± 8.77 and 83.9 ± 6.38%, respectively (p < 0.001). CONCLUSIONS: Patients undergoing TORS as part of a multilevel approach for the treatment of OSAHS have a reasonable expectation of success with minimal long-term morbidity.