Laryngoscope最新文献

Objectives: To assess vestibular function, video head impulse test (vHIT) is taken as the gold standard by evaluating the vestibulo-ocular reflex (VOR). However, vHIT requires the patient to wear a specialized head-mounted goggle equipment that needs to be calibrated before each use. For this, we proposed an intelligent head impulse test (iHIT) setting with a monocular infrared camera instead of the head-mounted goggle and contributed correspondingly a video classification approach with deep learning to vestibular function determination.

Methods: Within the iHIT framework, a monocular infrared camera was set in front of the patient to capture test videos, based on which a dataset DiHIT of HIT video clips was set up. We then proposed a two-stage multi-modal video classification network, trained on the dataset DiHIT, that took as input the eye motion and head motion data extracted from the facial keypoints via HIT clips and outputted the identification of the semicircular canal (SCC) being tested (SCC identification) and determination of VOR abnormality (SCC qualitation).

Results: Experiments on this dataset DiHIT showed that it achieved the accuracy of 100% in prediction of SCC identification. Furthermore, it attained predictive accuracies of 84.1% in horizontal and 79.0% in vertical SCC qualitation.

Conclusions: Compared with existing video-based HIT, iHIT eliminates goggles, does not require equipment calibration, and achieves complete automation. Furthermore, iHIT will bring more benefits to users due to its low cost and ease of operation. Codes and use case pipeline are available at: https://github.com/dec1st2023/iHIT.

Level of evidence: 3 Laryngoscope, 2024.

Objectives: Providing insight for pediatric ear surgery via investigations on the development patterns of ossicles, mastoid, and external auditory canal (EAC).

Methods: This retrospective study analyzed high-resolution computed tomography (HRCT) scans of 191 healthy temporal bones ranging from infants to adults. Subjects were grouped by 1-year intervals for developmental regression models and 3-year intervals for stage comparisons using t-tests or Mann-Whitney U tests.

Results: The size of auditory ossicles and tympanic cavity (TC) remained stable during development, while the minimum diameter of the tympanic sinus (TS) entrance was reduced. Regarding mastoid pneumatization, the air cells can be observed at birth, became pronounced at 2 years old, and were fully developed around the age of 5, with subsequent growth primarily involving radial expansion. Furthermore, the EAC demonstrated significant growth with age: the width of EAC increased linearly ( $\hat{y}$  = 0.12x + 4.01, R² = 0.85), while the length of EAC followed a polynomial growth pattern ( $\hat{y}$  = -0.03x² + 1.15x + 6.25, R² = 0.96).

Conclusions: Ossicles and TC remain stable during development. Furthermore, mastoid air cells may have developed in the early stages of life, while their diameter increases synchronously with EAC. All in all, ossicular chain reconstruction surgery and endoscopic ear surgery can be performed in babies.

Level of evidence: NA Laryngoscope, 2024.

Objectives: We sought to study the incidence of patient-initiated communication after parotidectomy, identify patient and surgical factors associated with patient-initiated communication, and evaluate trends and possible areas for improvement.

Methods: A retrospective cohort study of patients who underwent parotidectomy without combined procedures from 2018 to 2022 in a single tertiary-care institution was performed. We reviewed all patient communications documented within the electronic medical record within 30 days of discharge. We categorized patient communications as requiring an action by the surgeon, instruction by support staff, or reassurance.

Results: A total of 363 patients were included. Most patients were women (55.4%), Caucasian (78.8%), and had an average age of 56 years ± 16. We found 123 (33.9%) patients initiated postoperative communications. Swelling (47.2%) was the most common concern followed by wound concerns (15.4%). Switching from planned inpatient to outpatient surgery increased (OR = 2.635; 95% CI = 1.200-6.146, p = 0.026) propensity for postoperative communication. We found 31 (25.2%) postoperative communications required an action by the surgeon, 40 (32.5%) required instruction by the support staff, and the other 52 (42.3%) required reassurance or clarification. Multivariate analysis showed swelling (OR = 6.5, CI = 2.2-19, p < 0.001), male sex (OR = 3.27, CI = 1.127-9.459, p = 0.029), previous smoking (OR = 3.468, CI = 1.181-10.185, p = 0.024), and cancer (OR = 6.862, CI = 1.757-26.804, p = 0.006) were predictive of requiring an action by the surgeon.

Conclusions: This is the first study to evaluate patient-initiated communication after parotidectomy and found it occurred 33.4% of the time. We found significant opportunities to improve perioperative care, enhance patient satisfaction, and reduce the overall burden on medical personnel.

Level of evidence: Level IV Laryngoscope, 2024.

Objective: To investigate the correlation between anxiety, depression, and hemodynamic changes during office-based laryngeal surgery (OBLS).

Methods: All patients undergoing OBLS between February 2024 until July 2024 were invited to participate in the study. Participants had their vital signs recorded throughout the procedure at a 5-min interval. They also had to fill the Generalized Anxiety Disorder scale-7 (GAD-7) to assess anxiety severity and the Patient Health Questionnaire-9 (PHQ-9) to assess depression severity. Demographic data included age, gender, history of smoking, history of reflux disease, history of cardiovascular diseases, type and duration of procedure.

Results: A total of 45 patients were recruited in the study. During OBLS, 35.5% of patients developed hypertension and 28.9% developed tachycardia. There was a significant increase in mean systolic blood pressure (SBP) by 30.16 mmHg (p < 0.001), in mean diastolic blood pressure (DBP) by 31.44 mmHg (p < 0.001), and in mean heart rate (HR) by 14.2 beats per minute (p < 0.001). There was also a significant decrease in the mean O₂ saturation by 0.4% (p = 0.001). There was no correlation between anxiety and SBP, DBP, HR, and O₂ (r < 0.1). There was also no correlation between depression levels and SBP, DBP, HR, O₂ (r < 0.1).

Conclusion: There was a significant increase in the mean SBP, DP, and HR and a significant decrease in the O₂ saturation in patients undergoing OBLS. However, there was no correlation between anxiety, depression and the changes in these vital signs. Future investigations are needed to understand the causes of hemodynamic instability in OBLS.

Level of evidence: 2 Laryngoscope, 2024.

Objectives: To determine the relative 5-year overall survival (OS) and 5-year recurrence-free survival (RFS) outcomes for adjuvant interferon therapy in the treatment of head and neck cutaneous melanoma (HNCM) with parotid gland involvement.

Methods: A retrospective cohort study was conducted at a single tertiary care institution to analyze patients undergoing parotidectomy for cutaneous head and neck melanoma involving the parotid gland from 2000 to 2014. Time-to-event analyses were performed using Kaplan-Meier curves with log-rank p-values and Cox proportional hazards models.

Results: The sample consisted of 82 patients who underwent surgical resection of stage III HNCM with parotid involvement. The mean follow-up was 67.8 months (SD 65) after diagnosis. Twenty-one patients received adjuvant interferon therapy, 12 patients received adjuvant radiation therapy, and 49 patients received no adjuvant therapy. Crude 5-year OS rates were 95.0% for interferon therapy, 33.3% for adjuvant RT, and 40.4% for no adjuvant therapy. Crude 5-year RFS rates were 75.2%, 19.5%, and 40.8% respectively. In the fully adjusted model, adjuvant interferon therapy was associated with improved 5-year OS compared to adjuvant RT (HR 0.10, 95% CI 0.011-0.837; p = 0.034). There was no significant association between adjuvant interferon therapy and 5-year RFS in the fully adjusted model.

Conclusion: Adjuvant interferon therapy for surgically resected stage III cutaneous melanoma with parotid gland involvement may be associated with improved survival outcomes. These findings support the growing evidence for the use of immunotherapy in melanoma, and potentially a unique role for when melanoma involves the lymphatic-rich parotid gland.

Level of evidence: 3 Laryngoscope, 2024.

Objectives: This study explores the connection between chronic stress and tinnitus, a phantom auditory perception, using an animal model.

Methods: Rats were subjected to 2 h of daily restraint stress for 10 days. Tinnitus was assessed on the last day of stress exposure using the gap response of pre-pulse inhibition acoustic reflex, measured at 60 dB background sound level at 8, 16, and 20 kHz. Chronic stress-exposed rats were categorized into two groups: tinnitus (RTG) and non-tinnitus (RNTG). Various tests, including hearing assessments (distortion product otoacoustic emissions and auditory brainstem response), behavioral evaluations (elevated plus maze test and forced swimming test), and immunohistochemical studies in the auditory and limbic brain regions, were conducted to understand the relationship between chronic stress, tinnitus, and behavioral changes.

Results: Following chronic restraint stress, 64.3% of the rats exhibited tinnitus with no audiometric changes. EPM and FST indicated an increase of anxiety- and depression-related behavior in RTG. Immunohistochemical analyses identified specific alterations in the expression of neurotransmitter receptors within brain regions implicated in tinnitus. Specifically, we observed a decrease in γ-aminobutyric acid A receptor α1 expression and an increase in glutamate receptor (N-methyl-D-aspartate receptor subunit 1 and receptor subunit 2B) expression in specific brain region. These changes suggest a reorganization of neural circuits associated with the tinnitus generation and behavioral changes of the rats after chronic stress exposure.

Conclusion: Chronic stress alone can be a causal factor for the generation of tinnitus and behavioral changes through altered neural activities in tinnitus-related brain networks.

Level of evidence: NA Laryngoscope, 2024.

Buckled thyroid cartilage is a rare, but documented structural anomaly that has been found in patients who suffer from dysphonia. Outside of a known trauma, the origin of the anomaly is unknown. We present a case study of a patient who suffered from significant cartilage buckling, and associated hoarseness. While there is a single case of surgical correction documented, we present a description of a surgical approach with detailed photo documentation. With promising outcomes, this case report highlights a novel and effective approach to addressing dysphonia in the setting of buckled thyroid cartilage. Laryngoscope, 2024.

Background: Eosinophilic chronic rhinosinusitis with nasal polyps (eos-CRSwNP), especially those with diffuse disease as indicated by CT scans, has high recurrence rate and low control rate after endoscopic sinus surgery (ESS). Most of them are difficult to treat.

Objective: This study sought to identify if eos-CRSwNP patients were to undergo surgery earlier, while the disease is still limited on CT, they might achieve better postoperative outcomes.

Methods: This study enrolled eos-CRSwNP patients with different degree of sinus involvement who underwent primary ESS and compared the surgical outcomes of the patients exhibiting mild sinus involvement with those displaying severe sinus involvement. The demographic data, preoperative disease severity, and surgery outcomes at 1 year postoperatively were collected. CRS control status was the primary endpoint to evaluate the outcomes.

Results: This study included 118 patients with at least one-year follow-up. The overall uncontrolled rate was 33.1% at 1 year postoperatively. The best cut-off value for CT Lund-Mackay (L-M) score was 13 to predict the uncontrolled status (AUC = 0.67). Then, patients were divided into the mild group (L-M < 13, n = 70) and the severe group (L-M ≥ 13, n = 48) according to L-M score. The follow-up data indicated that 24.3% of patients (17/70) in the mild group and 45.8% of patients (22/48) in the severe group were uncontrolled (p = 0.015). Postoperative endoscopic score in the mild group was significantly better than those in the severe group (p = 0.002).

Conclusion: ESS performed on eos-CRSwNP patients with mild sinus involvement have better postoperative outcomes at 1 year than patients with severe sinus involvement.

Levels of evidence: Level 3 Laryngoscope, 2024.

Objective: To conduct a systematic review and meta-analysis to compare the efficacy of conservative treatment versus surgical debridement versus debridement followed by vascularized tissue coverage to provide evidence-based guidance on the management of osteoradionecrosis of the anterior and central skull base.

Data sources: PubMed, Embase, and Cochrane Library.

Review methods: Systematic review and data sources including PubMed, Embase, and Cochrane Library were accessed using PRISMA guidelines. Meta-analysis was performed on treatment type and resolution of osteoradionecrosis.

Results: A total of 13 articles met the inclusion criteria. Patients were categorized into conservative medical treatment versus surgical treatment. Conservative treatment included patients undergoing hyperbaric oxygen therapy, antibiotics, pentoxifylline-tocopherol-clodronate, or a combination of the three. Eight out of 197 patients treated with conservative therapy had resolution of symptoms (4.1%) while 135 of 188 patients treated with surgical intervention had resolution of symptoms (71.8%). Of these, 104 patients (91.2%) in the vascularized tissue group experienced resolution of symptoms.

Conclusion: Surgery was superior to medical treatment alone in the resolution of skull base osteoradionecrosis. Vascularized surgical treatment fared significantly better when compared with both surgical debridement only and/or medical treatment. Our findings suggest that surgical treatment should be considered earlier in patients with skull base osteoradionecrosis to prevent severe or fatal sequelae.

Level of evidence: NA Laryngoscope, 2024.

Spontaneous herniation of the temporomandibular joint into the external auditory canal is rare and generally results from inflammation or trauma but is rarely documented as a result of osteoradionecrosis. We report the novel surgical management of TMJ herniation by reconstructing the anterior EAC using conchal cartilage and a vascularized pedicled muscle flap in two patients. At follow-up, both had healing of the ear canal and TM without any evidence of joint herniation, with improved QOL and hearing. TMJ herniation due to an anterior EAC defect from osteoradionecrosis or trauma can be reconstructed with a cartilage graft and vascularized fascia flap. Laryngoscope, 2024.