The Transverse Turbinate Line: A Reliable Landmark for the Maxillary Sinus Natural Ostium.

OBJECTIVES: Approximating the maxillary sinus natural ostium's (MSNO) natural position during anterograde surgery is challenging, as only a single visual "landmark," the maxillary line, is routinely offered to guide the identification of the MSNO in three-dimensional space. Despite almost 40 years of endoscopic sinus surgery (ESS) experience in North America, maxillary recirculation and discontinuity between the natural and surgical ostia are commonly encountered during revision ESS. Consequently, we feel an additional visual landmark would assist in localizing the MSNO with or without image guidance. In this study, we aim to provide a second reliable landmark in the sinonasal cavity. METHODS: We present a cadaveric anatomical landmark series that provides a second visual landmark for the MSNO, which we have labeled the transverse turbinate line (TTL): a 2-millimeter zone of confidence for the craniocaudal positioning of the MSNO that can be combined with the anteroposterior (AP) landmark of the maxillary line. RESULTS: In our study, 40 cadaveric sinuses were dissected, and the TTL was found to correspond consistently with the zone between the superior and inferior aspects of the MSNO. CONCLUSION: We anticipate that this second relational landmark may decrease the time required for anterograde access to the MSNO in trainees, increase the accuracy of identification, and translate to lower long-term recirculation and maxillary surgery failure rates. LEVEL OF EVIDENCE: NA Laryngoscope, 133:3285-3291, 2023.

Impact of intraoperative wound dressing on post-tracheostomy pressure injuries.

OBJECTIVE: Determine the efficacy of a team-based approach to reduce tracheostomy-related skin breakdown by creating a standardized intraoperative dressing and nursing wound care protocol. METHODS: Prospective data collection of pediatric tracheostomy outcomes before and after interventions consisting of intraoperative wound dressing and standardized nursing wound care bundles. RESULTS: Before intervention, the incidence of skin breakdown within the first-week post-tracheostomy was 52% (13/25). Among patients who received an intraoperative wound dressing and nursing wound care bundles, the incidence of skin breakdown was reduced to 6.1% (3/49). CONCLUSION: The adoption of intraoperative wound dressings and nursing wound care bundles has nearly eliminated the incidence of skin breakdown in the first week post-tracheostomy among patients 0-12 years of age.

BCL11B is positioned upstream of PLZF and RORγt to control thymic development of mucosal-associated invariant T cells and MAIT17 program.

Mucosal-associated invariant T (MAIT) cells recognize microbial riboflavin metabolites presented by MR1 and play role in immune responses to microbial infections and tumors. We report here that absence of the transcription factor (TF) Bcl11b in mice alters predominantly MAIT17 cells in the thymus and further in the lung, both at steady state and following Salmonella infection. Transcriptomics and ChIP-seq analyses show direct control of TCR signaling program and position BCL11B upstream of essential TFs of MAIT17 program, including RORγt, ZBTB16 (PLZF), and MAF. BCL11B binding at key MAIT17 and at TCR signaling program genes in human MAIT cells occurred mostly in regions enriched for H3K27Ac. Unexpectedly, in human MAIT cells, BCL11B also bound at MAIT1 program genes, at putative active enhancers, although this program was not affected in mouse MAIT cells in the absence of Bcl11b. These studies endorse BCL11B as an essential TF for MAIT cells both in mice and humans.

Airway management protocol for conjoined twins delivery.

OBJECTIVE: Conjoined twin deliveries require collaborative preparation by multiple specialties for successful airway management. Literature regarding neonatal airway management after conjoined twin delivery is limited to case reports. We present a case series of conjoined twins and introduce an airway management protocol for conjoined twin delivery. METHODS: The medical records of conjoined twins and their mothers at a tertiary care center were reviewed from April 2016 to December 2018. The NCBI database was queried for literature regarding preparation for neonatal airway management after conjoined twins delivery. RESULTS: Five sets of conjoined twins were delivered. Of 10 neonates, all required bag valve mask ventilation. Other airway interventions included continuous positive airway pressure (7), endotracheal intubation (6), and direct laryngoscopy with telescopic video evaluation (1). No patients required ex-utero intrapartum treatment or emergent tracheostomy. A protocol for airway management is described and special considerations are discussed, including anatomic variations, equipment list, operating room staffing and layout, multidisciplinary prenatal conference, and airway imaging review. CONCLUSION: Conjoined twin deliveries have significant implications for the otolaryngologist and require multidisciplinary collaboration. An airway management protocol allows for a standardized process to secure the neonatal airway and optimize patient outcomes.

Coronavirus disease 2019 pandemic: staged management of surgical services for gynecology and obstetrics.

The coronavirus disease 2019 pandemic warrants an unprecedented global healthcare response requiring maintenance of existing hospital-based services while simultaneously preparing for high-acuity care for infected and sick individuals. Hospitals must protect patients and the diverse healthcare workforce by conserving personal protective equipment and redeployment of facility resources. While each hospital or health system must evaluate their own capabilities and surge capacity, we present principles of management of surgical services during a health emergency and provide specific guidance to help with decision making. We review the limited evidence from past hospital and community responses to various health emergencies and focus on systematic methods for adjusting surgical services to create capacity, addressing the specific risks of coronavirus disease 2019. Successful strategies for tiered reduction of surgical cases involve multidisciplinary engagement of the entire healthcare system and use of a structured risk-assessment categorization scheme that can be applied across the institution. Our institution developed and operationalized this approach over 3 working days, indicating that immediate implementation is feasible in response to an unforeseen healthcare emergency.

Complete Tracheal Transection in a 3-Year-Old After Blunt Neck Trauma: a Case Report.

Pediatric laryngotracheal injuries from blunt force trauma are rare but can lead to significant morbidity and mortality. In pediatric patients with severe laryngotracheal disruption, extracorporeal membrane oxygenation has been used to improve oxygenation and ventilation until definitive repair can be performed. We describe the case of a 3-year-old girl with blunt neck trauma secondary to an all-terrain vehicle accident in which her neck was clotheslined against a fence, leading to a complete tracheal transection at the C7-T1 level. Emergent extracorporeal membrane oxygenation cannulation was initiated. We discuss the evaluation and management of tracheal injuries and the requisite multidisciplinary team approach. Pediatric patients with laryngotracheal trauma require definitive airway management, which should be performed by skilled personnel.

The Adenoid Microbiome in Recurrent Acute Otitis Media and Obstructive Sleep Apnea.

OBJECTIVE: To compare the microbial flora of adenoids from patients with recurrent acute otitis media (AOM) and patients with obstructive sleep apnea (OSA). MATERIALS AND METHODS: This study was prospective and controlled. Adenoids were obtained from children undergoing adenoidectomy for recurrent AOM (n=7) or OSA (n=13). Specimens were processed for total deoxyribonucleic acid (DNA) isolation. 16s DNA 454-pyrosequencing was performed on AOM (n=5) and OSA (n=5) specimens. All specimens were analyzed by real-time polymerase chain reaction for the quantification of the oral commensal bacteria, Streptococcus salivarius. RESULTS: All adenoid specimens had evidence of microbes. Haemophilus influenzae, Moraxella catarrhalis, Streptococcus pneumoniae, Pseudomonas aeruginosa, and Staphylococcus aureus were among the dominant species in all samples. S. salivarius, Prevotella sp. and Terrahaemophilus aromaticivorans were more common on adenoids from OSA patients (p<0.05). Bradyrhizobium sp. was more common on adenoids from patients with recurrent AOM (p<0.05). The microbial profiles associated with recurrent AOM were different from, but overlapped with OSA. S. salivarius quantified by real-time PCR was not different between the two groups. CONCLUSION: Microbes are present on all adenoid specimens, though the microbial profile differs between recurrent AOM and OSA. The clinical significance of these differences remains to be determined.

A comparison of two methods of endoscopic dilation of acute subglottic stenosis using a ferret model.

OBJECTIVES/HYPOTHESIS: Balloon dilation is accepted as a first line treatment of acute subglottic stenosis, but its effects on the subglottic tissue remain largely unknown. We aimed to develop an animal model of acute subglottic stenosis using endoscopic techniques. Once developed, this model was used to compare the immediate effects of balloon dilation and endotracheal tube dilation on subglottic tissue. STUDY DESIGN: Prospective randomized animal study. METHODS: Acute subglottic injury was induced in 10 ferrets by endoscopic cauterization with silver nitrate. After 48-72 hours of observation, eight animals were randomized to undergo subglottic dilation with either a 5-mm balloon or endotracheal tubes of increasing diameter. These eight ferrets were euthanized within 10 minutes after dilation. The other two ferrets served as controls and were euthanized following observation only. The larynx from each ferret was harvested, and the subglottis was examined histologically by a pathologist blinded to the treatment arms. RESULTS: Acute subglottic stenosis was induced in all 10 ferrets using the endoscopic technique. Both balloon and endotracheal tube dilation resulted in comparable improvement in the subglottic airway diameter. A decreased thickness of submucosa/lamina propria was seen in the balloon dilation group. CONCLUSIONS: Acute subglottic stenosis can be reliably induced in ferrets using endoscopic techniques. Multiple dilation methods can be used to relieve acute obstruction. Balloon dilators seem to improve airway patency, in part, by decreasing the thickness of the submucosa and lamina propria. Further research is needed to determine how this impacts later stages of wound healing and final outcomes.

The effects of balloon dilation laryngoplasty in children with congenital heart disease.

OBJECTIVE: To determine the utility of performing balloon dilation laryngoplasty of subglottic stenosis (SGS) in children with underlying congenital heart disease (CHD). DESIGN: Retrospective study. SETTING: Tertiary care academic health center. PATIENTS: Children with an underlying diagnosis of CHD who subsequently underwent balloon dilation laryngoplasty for SGS from January 1, 2006, through December 31, 2011. MAIN OUTCOME MEASURES: Clinical improvement and avoidance of tracheotomy. RESULTS: We identified 16 children who had a diagnosis of CHD and underwent direct laryngoscopy and bronchoscopy. Five patients (3 girls and 2 boys) underwent a total of 11 balloon dilations for SGS. Their ages at initial dilation ranged from 1 to 4 months. All 5 patients had grade III SGS. Only 1 patient required a salvage tracheotomy for a thick glottic web and associated SGS after her first balloon dilation failed to improve airway patency. The remaining 4 patients have had long-term success in avoiding tracheotomy with symptomatic improvement. CONCLUSIONS: Balloon dilation represents a valuable treatment option in patients with CHD and SGS in whom a tracheostomy should be avoided.

An objective comparison of leakage between commonly used earplugs.

OBJECTIVE: We sought to determine the efficacy of commonly used earplugs using an anatomically correct ear model. METHODS: The total volume and rate of water that leaked past the earplug and subsequent defect in the tympanic membrane over separately measured 30, 60, 120, and 180-second intervals were recorded. Scenarios tested included a control with no earplug, custom molded earplug (Precision Laboratories, Orlando, FL), Mack's plug (Warren, MI), Doc's plug (Santa Cruz, CA), and cotton balls coated with petroleum jelly. RESULTS: All plugs tested resulted in less leakage at all time points when compared with no plug (P < .05). At 30 seconds, the custom molded, Mack's and Doc's plugs all showed significantly less leakage when compared with the cotton ball coated with petroleum jelly (P < .05). At 60, 120, and 180 seconds, Mack's, Doc's, and the cotton plugs all showed significantly less leakage compared with the customized plug (P < .05). At 120 and 180 seconds, Mack's plugs had significant less leakage than the cotton plug (P < .05). Among the types of plugs, the molded variety (Mack's) showed the least volume and lowest leakage rate (f(4,45) = 94 [P < .001]). In addition, Doc's and cotton balls coated with petroleum jelly were more effective than the customized earplugs. CONCLUSIONS: If the clinician feels that middle ear and external canal water exposure should be minimized, then use of earplugs, particularly the moldable variety, merits further consideration.

Failure of fluorescence to reveal middle ear penetration of quinolone drops.

OBJECTIVE: To evaluate the utility of fluorescence to assess penetration of quinolone ear drops (EDs) through tympanostomy tubes (TTs), the middle ear, eustachian tube, and into the oropharynx. DESIGN: Before-and-after trial. SETTING: Academic, tertiary care hospital. PATIENTS: Young children undergoing TT placement for otitis media and adolescents or adults undergoing repair of tympanic membrane (TM) perforations were included. INTERVENTIONS: Fluorescence of ofloxacin otic solution and serial dilutions was assessed with a Wood's lamp in vitro. Passage of ototopically administered ofloxacin into the pharynx was assessed in patients at the time of TT placement or TM repair. The oropharynx was visualized for fluorescence with a UV light for up to 2 hours after otic instillation. MAIN OUTCOME MEASURE: Oropharyngeal fluorescence. RESULTS: Ofloxacin otic fluorescence was visible at up to a 1:4 dilution. Fluorescence was confirmed in vivo by placing 1 drop of ofloxacin into the posterior pharynx and visualizing it transorally. Fluorescence was not identified in any of 20 patients after TT placement and in any of 6 patients prior to tympanoplasty. Two patients undergoing tympanoplasty reported tasting the EDs. CONCLUSION: Fluorescence is not a satisfactory method of assessing quinolone ED penetration through TTs and TM perforations, the middle ear, and into the nasopharynx.

Correlation of mucociliary clearance and symptomatology before and after adenoidectomy in children.

OBJECTIVE: The goal of this study is to better understand the role of adenoid hypertrophy and its impact on mucociliary clearance as it relates to the symptoms of chronic sinusitis in children. More specifically, the goal is to better understand which symptoms of chronic rhinosinusitis might be most likely to improve in children undergoing an adenoidectomy. METHODS: We conducted this study on 35 healthy children (>3 and <18 years of age), either male or female, who underwent adenotonsillectomy or adenoidectomy (with or without tympanostomy tube insertion). Eighteen patients completed pre- and postoperative surveys, with 10 also completing the Andersen's saccharine test (AST). The nasal mucociliary clearance will be evaluated with the AST, in which a saccharin particle (1.5mm diameter) is carefully placed on the floor of the nasal cavity approximately 1cm behind the anterior end of the inferior turbinate. The time taken by the subjects from placement of particle to the perception of the sweet taste will be taken as mucociliary clearance time (MCT). The length of the nasal cavity is measured intraoperatively as the distance between the upper medial incisor and the inferior edge of the soft palate. From these two values nasal mucociliary clearance velocity (MCV) (cm/min) can be calculated and assessed. This study took place at an academic institution. RESULTS: Symptomatic improvement was seen in all categories, as measured by the mean score improvement postoperatively. The greatest improvements were seen in nasal obstruction (mean=2.67 points ± .59) on the symptom survey, and emotional distress (mean=2.56 ± .47) on the SN5 survey. Quality of life improved by a mean=2.61 ± .49. Both MCT and MCV improved postoperatively (mean 3.64 min ± .84 and mean 1.96 cm/min ±.90, respectively). CONCLUSIONS: We believe this study has the potential to provide otolaryngologists across the country with a benchmark to communicate the specific symptomatic benefits from adenoidectomy.

A review of reprocessing techniques of flexible nasopharyngoscopes.

To provide assistance to otolaryngologists to decide the best manner in which to reprocess flexible nasopharyngoscopes, a review of existing English language medical literature regarding the methods of flexible endoscope reprocessing was performed, including previously published guidelines from other medical disciplines. Multiple steps were confirmed to be critical to effectively reprocess flexible nasopharyngoscopes. High-level disinfection has been determined to be the minimum level of disinfection required for reprocessing of flexible nasopharyngoscopes. Several steps are important in all reprocessing techniques, including manual cleaning, leak testing, cleaning with an enzymatic agent, high-level disinfection, and drying with vertical storage. Three techniques are available to achieve high-level disinfection: manual disinfection with a liquid disinfectant/sterilant, use of an automated endoscope reprocessor, and use of a disposable sheath. Achieving high-level disinfection of flexible nasopharyngoscopes can be accomplished by a variety of methods. Strict adherence to recommended procedures is critical.

Microdebrider resection of bilateral subglottic cysts in a pre-term infant: a novel approach.

Acquired subglottic cysts are a rare cause of stridor in infants. The two major risk factors for development of these cysts are prematurity and history of intubation. Microlaryngeal decompression and carbon dioxide laser resection of these cysts have been the most common treatment methods with recurrence rates as high as 43% [J. Lim, W. Hellier, J. Harcourt, S. Leighton, D. Albert, Subglottic cysts: the Great Ormond Street experience, Int. J. Pediatr. Otorhinolaryngol. 67 (2003) 461-465]. Carbon dioxide laser therapy also carries the risk of airway fire, injury to adjacent structures, and possible delayed scarring. We present a case of bilateral subglottic cysts in a premature infant with progressive stridor, treated using a microdebrider, and review the literature regarding the treatment of these lesions.

Otolaryngologic manifestations of achondroplasia.

OBJECTIVE: To describe the common otolaryngologic manifestations in patients with achondroplasia. DESIGN: Retrospective review. SETTING: Tertiary care children's hospital. PATIENTS: Twenty-two patients with achondroplasia, who were treated from 1994 to 2005, with a focus on otolaryngologic diagnoses. MAIN OUTCOME MEASURES: Descriptive statistics of common otolaryngologic diagnoses in patients with achondroplasia. RESULTS: Of the 22 patients, 15 (68%) received an otologic diagnosis, including 6 with recurrent otitis media and 5 with otitis media with effusion, and 11 patients (50%) underwent an otologic procedure, with 10 undergoing tympanostomy tube insertion. Nine patients (41%) had adenotonsillar hypertrophy, 6 of whom had polysomnogram-documented obstructive sleep apnea. Seven patients underwent adenotonsillectomy (TA). Two patients had significant residual postoperative obstructive sleep apnea, and 1 patient died from acute respiratory distress syndrome following TA. All patients had preoperative neurosurgical evaluation for foramen magnum stenosis, with 11 (50%) requiring decompression. No other airway or laryngeal diagnoses were seen. CONCLUSION: Patients with achondroplasia often present with common diagnoses such as otitis media and adenotonsillar hypertrophy, and familiarity with the condition and its common otolaryngologic manifestations improves the likelihood of successful patient care.