Surgical, clinical, and functional outcomes of transoral robotic surgery used in sleep surgery for obstructive sleep apnea syndrome: A systematic review and meta-analysis

Trans-Oral Robotic Surgery (TORS) and Postoperative Hemorrhage: An Analysis of Risk Factors

Background/Objectives: Postoperative hemorrhage is the most common complication after Trans-Oral Robotic Surgery (TORS) described in the literature. The aim of this study is to assess the presence of any risk factors that may impact postoperative bleeding. Methods: This was a retrospective study based on the analysis of patient data. Patients undergoing TORS procedures at the ENT Unit of Forlì Hospital from 2008 to 2022 for OSA (obstructive sleep apnea) or oncological disease and with a minimum follow-up of 30 days were included. The comorbidities analyzed were perioperative anticoagulant/antiplatelet therapy and clinicopathological features concerning the pathology. Total bleeding and severe bleeding (which required management in the operating room) were included. Results: A total of 414 patients (106 oncological TORS and 308 OSA TORS patients) were included. Post-TORS bleeding occurred in 47 cases (11.3%) and severe bleeding in 18 cases (4.3%). The pathology (oncology vs. OSA) treated with TORS did not represent a risk factor (p = 0.466). Antiplatelet intake represented an important risk factor (p = 0.002). Postoperative hemorrhage for oncological TORS occurred in 11.3% patients; of these, 6.6% had severe bleeding. Artery ligation during neck dissection prevented the risk of severe bleeding (p < 0.001). In TORS for OSA, postoperative hemorrhage was found in 11.4% cases, of which 3.6% were major bleeding. Neither the degree of OSA nor the association with other concurrent procedures were risk factors for postoperative bleeding in this study. Conclusions: Patients taking perioperative antiplatelet therapy have an almost 5-fold increased risk of developing postoperative bleeding. The pathology (oncology vs. OSA) does not influence the risk of bleeding. Prophylactic arterial ligation during neck dissection significantly decreases the risk of severe bleeding.

The role of positional changes in optimizing OSA treatment: evidence from DISE

PURPOSE

This study aimed to assess the impact of positional changes on upper airway obstruction patterns during drug-induced sleep endoscopy (DISE) in patients with obstructive sleep apnea (OSA) and identify the airway regions most responsive to this change. Special focus was placed on the tongue base, a critical area in OSA pathophysiology.

METHODS

This prospective study was conducted from June 2021 to June 2024. DISE was performed in patients with obstructive sleep apnea (OSA) in supine and lateral positions to simulate the effect of positional therapy. Findings were evaluated using the VOTE classification.

RESULTS

The examination was performed on 186 patients, with a median Apnea-Hypopnea Index (AHI) of 19.3. In the supine position, complete obstructions were noted at the soft palate (88.2%), oropharynx (33.3%), tongue base (53.2%), and epiglottis (15.6%). Lateral positioning significantly reduced obstructions, particularly at the tongue base, where obstruction resolved in 94/99 of cases (94.9%). This improvement was significantly more pronounced at the tongue base than at other sites (p < 0.001).

CONCLUSION

These results suggest that DISE can identify airway regions responsive to positional changes, potentially guiding clinical decisions on positional therapy. The findings show a significant reduction in tongue base obstruction during lateral positioning in DISE. Since tongue base obstruction is a key contributor to airway collapse in OSA, this improvement suggests a practical, non-invasive treatment approach. While these findings highlight an acute association between lateral positioning and reduced obstruction, further studies are needed to evaluate its long-term clinical efficacy.

Transoral robotic surgery versus conventional transoral surgery for submandibular stones: Systematic review and meta-analysis

PURPOSE

The recent diffusion of transoral robotic surgery has prompted its application not only in the oropharyngeal and hypopharyngeal-laryngeal fields, which are the anatomical sites of major use of the method, but also in the oral floor for the removal of tumours and other diseases affecting the salivary glands, such as sialothiasis. This study aims to assess the safety and efficacy profiles of transoral robotic surgery compared to traditional transoral procedures for the treatment of submandibular stones.

METHODS

PubMed, Embase, and Web of Science were searched for studies reporting on traditional or robotic transoral surgery for submandibular stones. As recommended by the PRISMA guidelines, proportion meta-analysis was performed on a random-effects model. The present review was registered on PROSPERO (CRD42024522199).

RESULTS

A total of 2520 participants from 23 studies were included. The selected patients had a mean age of 44 years (range 5-87), with 48 % of them being female. Transoral robotic surgery had a success rate of 95.7 % (95 % CI 90.9-99.0), higher than traditional transoral approaches (success rate 92.6 %; 95 % CI 89.3-95.4). Transient stupor of the lingual nerve was observed more frequently in robotic surgeries (15.8 % vs 8.1 %). However, no reports of permanent injury to the lingual nerve were found.

CONCLUSION

Transoral robotic surgery is a valid treatment option for submandibular stones. Due to the high costs of the procedure, strict patient selection is mandatory.

Automatic semantic segmentation of the osseous structures of the paranasal sinuses

Endoscopic sinus and skull base surgeries require the use of precise neuronavigation techniques, which may take advantage of accurate delimitation of surrounding structures. This delimitation is critical for robotic-assisted surgery procedures to limit volumes of no resection. In this respect, an accurate segmentation of the osseous structures of the paranasal sinuses is a relevant issue to protect critical anatomic structures during these surgeries. Currently, manual segmentation of these structures is a labour-intensive task and requires wide expertise, often leading to inconsistencies. This is due to the lack of publicly available automatic models specifically tailored for the automatic delineation of the complex osseous structures of the paranasal sinuses. To address this gap, we introduce an open source dataset and a UNet SwinTR model for the segmentation of these complex structures. The initial model was trained on nine complete ex vivo CT scans of the paranasal region and then improved with semi-supervised learning techniques. When tested on an external dataset recorded under different conditions, it achieved a DICE score of 98.25 ± 0.9. These results underscore the effectiveness of the model and its potential for broader research applications. By providing both the dataset and the model publicly available, this work aims to catalyse further research that could improve the precision of clinical interventions of endoscopic sinus and skull-based surgeries.

Transoral robotic surgery in otolaryngology practice: a single institutional experience

BACKGROUND

Transoral robotic surgery (TORS) has emerged as a minimally invasive technique for managing head and neck pathologies, offering reduced morbidity and improved surgical precision. Despite its growing popularity, institutional experiences with TORS remain limited.

OBJECTIVES

This study aimed to evaluate the outcomes of TORS for oncological and obstructive sleep apnoea syndrome (OSAS) cases, focusing on efficacy, safety and complications.

MATERIALS AND METHODS

A retrospective analysis was conducted on 61 patients who underwent TORS at a single institution between 2018 and 2024. Demographic, surgical and postoperative data were collected, including histopathological findings, complications and hospitalization duration. Statistical analyses were performed using SPSS software (SPSS, Chicago, IL, USA), with significance set at p < .05.

RESULTS

Of the 61 patients, 67.2% were male, with a mean age of 57.25 years. TORS was performed for oncological purposes in 72.1% of cases and OSAS in 27.9%. The most common surgical procedure was base-of-tongue resection (42.6%). Postoperative bleeding occurred in 11.4% of cases, all oncological, with two mortalities due to haemorrhage. Hospital readmission within 30 days occurred in 13.1% of patients. OSAS cases demonstrated shorter hospital stays and lower complication rates than oncological cases.

CONCLUSIONS

TORS is a safe and effective technique for both oncological and OSAS cases, offering significant benefits in reducing morbidity. However, complications, particularly bleeding in oncological cases, remain a challenge, highlighting the need for careful patient selection and perioperative management.

Transoral Robotic Surgery for Patients with Obstructive Sleep Apnoea: A Systematic Literature Review of Current Practices

Transoral robotic surgery (TORS) for tongue base reduction (TBR) and/or epiglottic surgery is an effective treatment option for selected patients with moderate to severe obstructive sleep apnoea (OSA). This systematic review aims to provide an up-to-date overview of current practices and challenges associated with TORS for OSA. PubMed and Embase databases were searched up to December 2022 following PRISMA guidelines. Primary outcome measures were surgical technique, intraoperative measures, postoperative management and complications. A total of 32 articles, including 2546 patients, met the inclusion criteria. TORS was most commonly performed as part of a multilevel surgical approach. Nasotracheal intubation was the preferred method for general anaesthesia. The surgical technique for TORS tongue base and epiglottis did not differ significantly among institutions, although some variations exist. Postoperative management varied, with most authors aiming for immediate postoperative extubation, routine postoperative ward admission and early oral intake initiation. Common postoperative complications were dysphagia and bleeding, with no reported mortality. TORS is established as a safe and feasible surgical option for selected OSA patients, addressing tongue base and/or epiglottic obstruction. However, further studies are required to determine patients' selection criteria, preferred volume of excised tongue tissue and to assess the necessity for postoperative intensive care unit monitoring.

Transoral Laser Microsurgery and Transoral Robotic Surgery in Aging Patients: A State-of-The-Art Review

Purpose

In the present study, the findings related to the epidemiology, clinical presentation, and therapeutic outcomes of elderly patients treated with transoral laser microsurgery (TOLM) and transoral robotic surgery (TORS) for supraglottic laryngeal squamous cell carcinoma (LSCC) have been reviewed.

Methods

A PubMed, Cochrane Library, and Scopus literature search was conducted according to the PRISMA statements. Critical literature analysis was carried out considering the last advancement in TOLS and TORS, and their related surgical, functional, and survival outcomes.

Findings

The mean age of patients with supraglottic LSCCs has progressively increased in the past decades. The data on postoperative complications in elderly patients with LSCC are heterogeneous and contradictory. The thought of the age-related high risk of complications was based on open supraglottic laryngectomy (SGL), but not on TOLM and TORS findings, which do not support an age-related increase of most postoperative complications. The only complication that could be associated with age is aspiration. The adequate selection of patients undergoing TOLM or TORS, and the pre- to postoperative evaluation of swallowing function can prevent this risk. The OS of elderly patients treated with TOLM or TORS SGL could be lower compared to younger patients. However, the disease-free survival was not influenced by age, highlighting the role of comorbidities and intercurrent diseases in the presumed lower survival. The survival analysis could definitively consider the physiological age rather than the chronological age to investigate the impact of age on survival outcomes.

Conclusion

The current literature supports an important place of TOLM and TORS in managing cT1-T3 supraglottic LSCC. The preoperative geriatric, nutritional, and swallowing evaluations are important for ensuring an adequate selection of patients treated with TORS or TOLM SGL.

International expert consensus statement: surgical failure in obstructive sleep apnea

PURPOSE

Upper airway (UA) surgery is commonly employed in the treatment of patients with obstructive sleep apnea (OSA). The intricate pathophysiology of OSA, variability in sites and patterns of UA collapse, and the interaction between anatomical and non-anatomical factors in individual patients may contribute to possible surgical failures. This clinical consensus statement aims to identify areas of agreement among a development group comprising international experts in OSA surgery, regarding the appropriate definition, predictive factors in patients, and management of surgical failure in OSA treatment.

METHODS

A clinical consensus statement (CCS) was developed using the Delphi method by a panel of 35 contributors from various countries. A systematic literature review adhering to PRISMA guidelines was conducted. A survey consisting of 60 statements was then formulated and presented to the experts.

RESULTS

Following two rounds of the Delphi process, consensus or strong consensus was achieved on 36 items, while 24 items remained without consensus. Specifically, 5 out of 10 statements reached consensus regarding on the 'Definition of Surgical Success/Failure after OSA Surgery'. Regarding the 'Predictive Factors of Surgical Failure in OSA Surgery', consensus was reached on 10 out of 13 statements. In the context of the 'Diagnostic Workup in OSA Surgery', consensus was achieved on 9 out of 13 statements. Lastly, in 'Treatment in Surgical Failure Cases', consensus was reached on 12 out of 24 statements.

CONCLUSION

The management of OSA after surgical failure presents a significant clinical challenge for sleep specialists. This CCS provides valuable guidance for defining, preventing, and addressing surgical failures in the treatment of OSA syndrome.

Assessing the Efficacy and Safety of Extubation Protocols in the Intensive Care Unit Following Transoral Robotic Surgery for Obstructive Sleep Apnea Syndrome: A Retrospective Cohort Study

Background: There is a notable lack of protocols addressing extubation techniques in transoral robotic surgery (TORS) for obstructive sleep apnea (OSA). Methods: This retrospective cohort study enrolled patients who underwent TORS for OSA between March 2015 and December 2021 and were managed with different extubation approaches. The patients were divided into two groups: high-flow nasal cannula (HFNC) therapy and conventional oxygen therapy. The use of an airway exchange catheter (AEC) was investigated. Results: The application of HFNC use versus conventional oxygen therapy led only to a statistical reduction in extubation time (p = 0.024); length of stay in the intensive care unit (ICU) and the episodes of desaturation below 95% were reduced, but data are non-statistically significant. Similarly, the application of an AEC led to a reduction in extubation time in hours (p = 0.008) and length of stay in the ICU (p = 0.024). Conclusions: In patients with OSA who underwent TORS, the use of an HFNC, with or without an AEC, resulted in a significant reduction in extubation time without major adverse events. Additionally, HFNC utilization may decrease desaturation episodes during extubation. Despite limitations, based on the findings of this preliminary investigation, the combination of an HFNC and an AEC emerges as a promising strategy for enhancing the safety and efficacy of extubation protocols in this patient population.

Perception of Young European Otolaryngologists toward Transoral Robotic Surgery in Head and Neck Oncology and Surgery

Background: To investigate the perception of young European otolaryngologists (OTOs), i.e., head and neck surgeons, toward transoral robotic surgery (TORS). Methods: Members of the Young Confederation of European Otorhinolaryngology-Head and Neck Surgery and Young Otolaryngologists of International Federation of Otorhinolaryngological Societies were surveyed about TORS perception and practice. Results: The survey was completed by 120 young OTOS (26%). The most important barriers to TORS were robot availability (73%), cost (69%), and lack of training (37%). The participants believed that the main benefits include better surgical filed view (64%), shorter hospital stay (62%), and better postoperative outcomes (61%) than the conventional approach. Head and neck surgeons considered cT1-T2 oropharyngeal cancers (94%), resection of base of tongue for sleep apnea (86%), or primary unknown cancer (76%) as the most appropriate indications. A total of 67% of TORS surgeons assessed themselves as adequately trained in TORS. Conclusions: Young European OTOs report positive perception, adoption, and knowledge of TORS. The cost-related unavailability and the lack of training or access are reported to be the most important barriers for the spread of TORS.

An Evaluation of Obstructive Sleep Apnea Patient's Quality of life Following Continuous Positive Airway Pressure and Uvulopalatopharyngoplasty

Aims

Obstructive sleep apnea (OSA) is characterized by episodic sleep state-dependent upper airway collapse. OSA can markedly decrease quality of life (QoL) and productivity. Continuous Positive Airway Pressure (CPAP) has been used as an effective treatment for OSA. Recently, uvulopalatopharyngoplasty (UPPP) treatment has emerged as effective management among patients with OSA, especially non-adherent ones to conventional therapies such as CPAP. Our aim was to determine whether CPAP and UPPP treatment could improve the quality of life in patients with moderate OSA.

Design

Prospective.

Setting

Patients with moderate OSA, confirmed by polysomnography from March 2019 to March 2020, participated. CPAP and UPPP treatments were considered for patients according to their preferences. The Sleep Apnea Quality of Life Index (SAQLI) questionnaire before and after treatment was completed.

Methods

Change in their QoL was compared between the CPAP group and UPPP treatment. In addition, QoL was compared between these groups and patients who did not receive any of these treatment methods.

Results

Seventy-eight patients were included in treatment groups, 40 using CPAP and 38 undergoing UPPP treatment. Furthermore, 10 patients who did not receive treatment were considered the control. Both methods of treatment significantly (p < 0.001) improved QoL, but UPPP treatment was superior (p = 0.042) to CPAP. There was a poor correlation between post-treatment BMI (0.037), Respiratory Disturbance Index (RDI) (0.096), age (0.022), and post-treatment SAQLI score.

Conclusion

Based on these results, CPAP and UPPP treatment can improve QoL. UPPP treatment could be considered an effective arm of OSA management among the study population.

The effect of dexamethasone on functional pain following Transoral Robotic Surgery: a randomized double blinded clinical trial

BACKGROUND

Pain is prevalent after most TransOral Robotic Surgery (TORS) procedures and may limit function i.e. swallowing. Currently, there is limited knowledge regarding optimal pain treatment in TORS.

AIMS/OBJECTIVES

This clinical trial randomized patients to either a high-dose dexamethasone or low-dose dexamethasone treatment in addition to a multimodal basic analgesic protocol. The aim of the trial was to investigate the pain intensity during rest and swallowing using the Visual Analogue Scale (VAS) after TORS lingual tonsillectomy. Secondary outcomes were acceptable food consistency, nausea, vomiting, opioid rescue usage, length of hospitalization, feeding tube placements, readmissions, blood glucose levels and postoperative complications.

METHODS

The trial was conducted between August 2020 and October 2022. Eligible patients were patients scheduled for TORS-L treatment of obstructive sleep apnea syndrome or as part of the diagnostic work-up of head and neck carcinoma of unknown primary.

RESULTS

Eighteen patients were and randomized 1:1. There were overall no significant differences between groups in the reported VAS scores during rest or swallowing (p ≥ .05). Overall, there were no differences in the secondary outcomes.

CONCLUSION

There were no differences in the pain intensity in the two treatment groups allocated to a basic multimodal analgesic package and either high-dose dexamethasone or low-dose dexamethasone treatment. The trial is the first RCT to include pain measurement during a procedure-relevant activity, thus creating a platform for future recovery studies.

Are new and young generations of surgeons more aware of transoral robotic surgery than older ones? An international survey

The objective of this study is to investigate adoption, perception, and awareness of otolaryngologist-head neck surgeons (OTO-HNS) toward transoral robotic surgery (TORS) according to the surgeon experience. A total of 1,383 OTO-HNS of YO-IFOS and IFOS received an online survey dedicated to the adoption, perception, and awareness toward TORS. The following outcomes were compared between residents and fellows, young/middle-aged and older OTO-HNS: awareness/perception; indications; advantages; barriers and expected improvements of TORS practice. From the 357 responders (26%), 147 participants were residents and fellows; while 105 and 105 OTO-HNS reported 10 to 19, and more than 20 years of practice. The main barriers of using TORS included the cost and the availability of robot, and the lack of training opportunity. The better view of the operative field and the shorter patient hospital stay were considered as the main advantages. Older surgeons trust more likely in TORS benefits (p = 0.001) and surgical field view advantages (p = 0.037) compared to younger participants. TORS is an important surgical minimal invasive approach for the future for 46% of residents and fellows versus 61% of older OTO-HNS (p = 0.001). Compared to older OTO-HNS, residents and fellows reported more frequently that the lack of training opportunity is the main barrier of TORS (52% versus 12%; p = 0.001). Residents and fellows did not share the same expectations of robot improvement for the future than older OTO-HNS. Experienced OTO-HNS had better perception and trust toward TORS than residents and fellows. Residents and fellows identified the lack of training opportunity as the main barrier to the use of TORS. TORS access and training programs need to be improved in academic hospitals for residents and fellows.

Why in hospital following transoral robotic lingual tonsillectomy?

BACKGROUND

The reported hospital length of stay (LOS) following transoral robotic surgery lingual tonsillectomy (TORS-L) is variable, with limited understanding of the factors requiring hospitalization and no evidence-based criteria for discharge.

AIMS/OBJECTIVES

This observational cohort study investigated factors hindering discharge following TORS-L in a well-defined postoperative care program.

METHODS

Patients were included between August 2020 and October 2022. A discharge scheme was filled out twice daily, specifying the factor(s) for hospitalization among patients undergoing TORS-L. This trial was a sub-investigation of a national multicentre randomized clinical trial (RCT) testing the efficiency of high-dose dexamethasone on postoperative pain control. Participation in the RCT demanded admission to the fourth postoperative day as dexamethasone/placebo was given intravenously in repeated dosages till day 4 postoperatively.

RESULTS

Eighteen patients were included in the analysis. The main factor for hospitalization was nutritional difficulties, while pain was a limiting factor for discharge only on the first postoperative 1-3 days. More than half of the patients could have potentially been discharged on postoperative day 2 when omitting the RCT treatment plan in the analysis.

CONCLUSION

The study estimates that the majority of patients may be discharged on postoperative day 2 following TORS-L.

Oxidative Stress in Obstructive Sleep Apnea Syndrome: Putative Pathways to Hearing System Impairment

INTRODUCTION

OSAS is a disease that affects 2% of men and 4% of women of middle age. It is a major health public problem because untreated OSAS could lead to cardiovascular, metabolic, and cerebrovascular complications. The more accepted theory relates to oxidative stress due to intermittent hypoxia, which leads, after an intense inflammatory response through multiple pathways, to endothelial damage. The objective of this study is to demonstrate a correlation between OSAS and hearing loss, the effect of the CPAP on hearing function, and if oxidative stress is also involved in the damaging of the hearing system.

METHODS

A review of the literature has been executed. Eight articles have been found, where seven were about the correlation between OSAS and the hearing system, and only one was about the CPAP effects. It is noted that two of the eight articles explored the theory of oxidative stress due to intermittent hypoxia.

RESULTS

All studies showed a significant correlation between OSAS and hearing function (p < 0.05).

CONCLUSIONS

Untreated OSAS affects the hearing system at multiple levels. Oxidative stress due to intermittent hypoxia is the main pathogenetic mechanism of damage. CPAP has no effects (positive or negative) on hearing function. More studies are needed, with the evaluation of extended high frequencies, the execution of vocal audiometry in noisy environments, and the evaluation of potential biomarkers due to oxidative stress.

Adoption of otolaryngologist-head neck surgeons toward transoral robotic surgery: An international survey

OBJECTIVE

To investigate perception, adoption and awareness of otolaryngologist-head neck surgeons (OTO-HNS) toward transoral robotic surgery (TORS).

METHODS

An online survey was sent to 1383 OTO-HNS on the perception, adoption and awareness about TORS to members of many otolaryngological societies. The following aspects were assessed: TORS access; training; awareness/perception; indications and advantages/barriers to TORS practice. The responses were presented for the entire cohort and regarding the TORS experience of OTO-HNS.

RESULTS

A total of 359 completed the survey (26%); including 115 TORS surgeons. TORS-surgeons carry out a mean number of 34.4 annual TORS procedures. The primary barriers to TORS were the cost of the robot (74%) and disposable accessories (69%), and the lack of training opportunity (38%). The 3D view of the surgical field (66%), the postoperative quality of life outcomes (63%) and the shorter hospital stay (56%) were the most important benefits of TORS. TORS-surgeons believed more frequently that TORS is indicated for cT1-T2 oropharyngeal and supraglottic cancers than non-TORS surgeons (p < .005). Participants believed that the priorities for the future consisted of the reduction of the robot arm size and the incorporation of flexible instruments (28%); the integration of laser (25%) or GPS tracking based on imaging (18%), all of them to improve accesses to hypopharynx (24%), supraglottic larynx (23%) and vocal folds (22%).

CONCLUSIONS

The perception, adoption and knowledges toward TORS depend on the access to robot. The findings of this survey may help guide decisions on how improve the dissemination of TORS interest and awareness.

Oromaxillofacial Surgery: Both a Treatment and a Possible Cause of Obstructive Sleep Apnea-A Narrative Review

Obstructive sleep apnea (OSA) is a chronic, sleep-related breathing disorder. It is characterized by a nocturnal periodic decrease or complete stop in airflow due to partial or total collapse of the oropharyngeal tract. Surgical treatment of OSA is constantly evolving and improving, especially with the implementation of new technologies, and this is needed because of the very heterogeneous reasons for OSA due to the multiple sites of potential airway obstruction. Moreover, all of these surgical methods have advantages and disadvantages; hence, patients should be approached individually, and surgical therapies should be chosen carefully. Furthermore, while it is well-established that oromaxillofacial surgery (OMFS) provides various surgical modalities for treating OSA both in adults and children, a new aspect is emerging regarding the possibility that some of the surgeries from the OMFS domain are also causing OSA. The latest studies are suggesting that surgical treatment in the head and neck region for causes other than OSA could possibly have a major impact on the emergence of newly developed OSA, and this issue is still very scarcely mentioned in the literature. Both oncology, traumatology, and orthognathic surgeries could be potential risk factors for developing OSA. This is an important subject, and this review will focus on both the possibilities of OMFS treatments for OSA and on the OMFS treatments for other causes that could possibly be triggering OSA.

A Review of a Recent Meta-Analysis Study on Obstructive Sleep Apnea

This paper summarizes a recent meta-analysis of various topics in obstructive sleep apnea (OSA). In addition to cardiovascular disease and neurocognitive dysfunction, a wide variety of diseases have been associated with OSA, and associations with cancer have also been reported. Although continuous positive airway pressure is a very effective treatment, the results have shown that it does not reduce the incidence of various complications. It has been reported that uvulopalatopharyngoplasty was effective, and robotic surgery for the tongue root and hypoglossal nerve stimulation were also effective. The effectiveness of various medications to reduce daytime sleepiness has also been demonstrated. Although exercise lowered the apnea-hypopnea index, it was not related to changes in body composition, and it was also reported that exercise combined with weight control were effective. Additionally, interesting and clinically meaningful meta-analysis results were summarized and presented.

Patient Benefit and Quality of Life after Robot-Assisted Head and Neck Surgery

Robotic systems for head and neck surgery are at different stages of technical development and clinical application. Currently, robotic systems are predominantly used for transoral surgery of the pharynx and larynx. Robotic surgery of the neck, the thyroid, and the middle and inner ear is much less common; however, some oncological and functional outcomes have been reported. This article provides an overview of the current state of robot-assisted head and neck surgery with a special emphasis on patient benefit and postoperative quality of life (QoL). The focus is placed on the role of transoral robotic surgery (TORS) for the resection of oropharyngeal carcinomas. For this application, reported long-term outcomes show functional post-operative advantages for selected oropharyngeal cancer patients after TORS compared to open surgery and primary radiotherapy. Since TORS also plays a significant role in the context of potential therapy de-escalation for HPV-positive oropharyngeal cancer patients, ongoing trials are presented. Regarding the evaluation of the therapeutic benefit and the QoL of cancer patients, special attention has to be paid to the large degree of variability of individual patients' preferences. Influencing factors and tools for a detailed assessment of QoL parameters are therefore detailed at the beginning of this article. Notably, while some robotic systems for ear and skull base surgery are being developed in Europe, TORS systems are mainly used in North America and Asia. In Europe and Germany in particular, transoral laser microsurgery (TLM) is a well-established technology for transoral tumor resection. Future trials comparing TORS and TLM with detailed investigation of QoL parameters are therefore warranted and might contribute to identifying suitable fields for the application of the different techniques.

TORS as Part of Multilevel Surgery in OSA: The Importance of Careful Patient Selection and Outcomes

Transoral robotic surgery (TORS) for Obstructive Sleep Apnea (OSA) is a relatively young technique principally devised for managing apneas in the tongue base area. This study summarizes and presents our personal experience with TORS for OSA treatment, with the aim to provide information regarding its safety, efficacy, and postoperative complications. A retrospective study was conducted on patients undergoing TORS with lingual tonsillectomy through the Da Vinci robot. The effectiveness of the surgical procedure was assessed employing the Epworth Sleepiness Scale (ESS) and overnight polysomnography with the Apnea-Hypopnea Index (AHI). A total of 57 patients were included. Eighteen patients (31.6%) had undergone previous surgery. The mean time of TORS procedure was 30 min. Base of tongue (BOT) management was associated with other procedures in all patients: pharyngoplasty (94%), tonsillectomy (66%), and septoplasty (58%). At 6 months follow-up visit, there was a significant improvement in AHI values (from 38.62 ± 20.36 to 24.33 ± 19.68) and ESS values (from 14.25 ± 3.97 to 8.25 ± 3.3). The surgical success rate was achieved in 35.5% of patients. The most frequent major complication was bleeding, with the need for operative intervention in three cases (5.3%). The most common minor complications were mild dehydration and pain. TORS for OSA treatment appears to be an effective and safe procedure for adequately selected patients looking for an alternative therapy to CPAP.

Combined Transoral Robotic Tongue Base Surgery and Palate Surgery in Obstructive Sleep Apnea Syndrome: Modified Uvulopalatopharyngoplasty versus Barbed Reposition Pharyngoplasty

Background: Successful surgery outcomes are limited to moderate to severe obstructive sleep apnea (OSA) syndrome. Multilevel collapse at retropalatal and retroglossal areas is often found during the drug-induced sleep endoscopy (DISE). Therefore, multilevel surgery is considered for these patients. The aim of our study was to survey surgical outcomes by modified uvulopalatoplasty (UPPP) plus transoral robotic surgery tongue base reduction (TORSTBR) versus barbed repositioning pharyngoplasty (BRP) plus TORSTBR. Methods: The retrospective cohort study was performed at a tertiary referral center. We collected moderate to severe OSA patients who were not tolerant to positive pressure assistant PAP from September 2016 to September 2019; pre-operative–operative Muller tests all showed retropalatal and retroglossal collapse; pre-operative Friedman Tongue Position (FTP) > III, with the tonsils grade at grade II minimum, with simultaneous velum (V > 1) and tongue base (T > 1), collapsed by drug-induced sleep endoscopy (DISE) under the VOTE grading system. The UPPP plus TORSTBR (n = 31) and BRP plus TORSTBR (n = 31) techniques were offered. We compare the outcomes using an Epworth sleepiness scale (ESS) questionnaire, and measure the patients’ apnea–hypopnea index (AHI), lowest O₂ saturation, cumulative time spent below 90% (CT90), and arousal index (AI) by polysomnography six months after surgery; we also measure their length of hospital stay and complications between these two groups. Results: Comparing BRP plus TORSTBR with UPPP plus TORSTBR, the surgical success rate is 67.74% and 38.71%, respectively. The significantly higher surgical success rate in the BRP plus TORSTBR group was noted. The surgical time is shorter in the BRP plus TORSTBR group. The complication rate is not significant in pain, bleeding, dysgeusia, dysphagia, globus sensation, and prolonged suture stay, even though the BRP plus TORSTBR rendered a higher percentage of globus sensation during swallowing and a more prevalent requirement of suture removal one month after surgery. The length of hospital stay is not significantly different between the two groups. Conclusion: In conclusion, BRP plus TORSTBR is a considerable therapy for moderate to severe OSA patients with DISE showing a multi-level collapse in velum and tongue base area. The BRP technique might offer a better anterior–posterior suspension vector for palate level obstruction.