Single-use versus reusable metallic laryngoscopes for non-emergent intubation: A retrospective review of 72,672 intubations.

STUDY OBJECTIVE: Increased regulatory requirements for sterilization in recent years have prompted a widespread transition from reusable to single-use laryngoscopes. The purpose of this study was to determine if the transition from metallic reusable to metallic single-use laryngoscopes impacted the performance of direct laryngoscopy at an academic medical center. DESIGN: Single-site retrospective cohort study. SETTING: General anesthetic cases requiring tracheal intubation. PATIENTS: Adult patients undergoing non-emergent procedures. INTERVENTIONS: Data were collected two years before and two years after a transition from metallic reusable to metallic single-use laryngoscopes. MEASUREMENTS: The primary outcome was need for intubation rescue with an alternate device. Secondary outcomes were difficult laryngeal view (modified Cormack-Lehane grade ≥ 2b) and hypoxemia (SpO2 < 90% for >30 s) during direct laryngoscopy intubations. Subgroup analyses for rapid sequence induction, Macintosh blades, Miller blades, and patients with difficult airway risk factors (Obstructive Sleep Apnea, Mallampati ≥3, Body Mass Index >30 kg/m2) were performed. MAIN RESULTS: In total, 72,672 patients were included: 35,549 (48.9%) in the reusable laryngoscope cohort and 37,123 (51.1%) in the single-use laryngoscope cohort. Compared with reusable laryngoscopes, single-use laryngoscopes were associated with fewer rescue intubations with an alternate device (covariates-adjusted odds ratio [OR] 0.81 95% CI 0.66-0.99). Single-use laryngoscopes were also associated with lower odds of difficult laryngeal view (OR 0.86; 95% CI 0.80-0.93). Single use laryngoscopes were not associated with hypoxemia during the intubation attempt (OR 1.03; 95% CI 0.88-1.20). Similar results were observed for subgroup analyses including rapid sequence induction, Macintosh blades, Miller blades, and patients with difficult airway risk factors. CONCLUSIONS: Metallic single-use laryngoscopes were associated with less need for rescue intubation with alternate devices and lower incidence of poor laryngeal view compared to reusable metallic laryngoscopes.

Craniofacial Fellowship Applicant Perceptions of Virtual Interviews.

INTRODUCTION: The 2021 interview cycle for craniofacial fellowship applicants was the first to be held virtually due to the coronavirus disease 2019 pandemic. Here, we detail the craniofacial fellowship applicant perceptions and experience on the virtual interview process. MATERIALS AND METHODS: An institutional review board-approved 35-question survey study on the perception of the virtual interview process among craniofacial fellowship applicants was conducted. Surveys were distributed to individuals who had applied through the match, overseen by the American Society of Craniofacial Surgeons (ASCFS). RESULTS: Ten surveys were fully completed with a corresponding response rate of 48%. The average number of interviews completed was 12.7±7.7 and 50% of applicants interviewed at >1 program in a single day. Overall, 90% of respondents preferred in-person interviews before the interview season, however, only 10% preferred the in-person format afterwards. Preference for a virtual-only format increased from 10% to 70%. Applicants cited cost (100%), ease of scheduling (90%), and ability to participate in more interviews (70%) as the primary strengths of the virtual platform; none reported difficulties with self-advocacy. After the interview cycle, 90% stated they would recommend virtual interviews. CONCLUSIONS: The greatest strengths of virtual interviews were the ability to participate in more interviews, the ease of scheduling, and the cost benefits. Most applicants reported the same or increased ability for self-advocacy with virtual interviews. Following the index interview cycle for 2021, the majority of fellowship applicants now appear to prefer a virtual-only or hybrid format and would recommend virtual interviews in the future.

Low-Risk Papillary Thyroid Cancer: Treatment De-Escalation and Cost Implications.

INTRODUCTION: The American Thyroid Association (ATA) updated consensus guidelines in 2015 for radioactive iodine (RAI) and resection for low-risk papillary thyroid cancer. The objective of this study was to describe the evolution of institutional practice patterns and estimate the cost implications of these trends. MATERIALS AND METHODS: Patients with cT1-T2N0 papillary thyroid cancer were identified via an institutional tumor registry. Incidences of total thyroidectomy or RAI were tracked longitudinally using cumulative sum. Real-world costs for RAI and each surgical encounter were adjusted for inflation and standardized to national average costs from National Inpatient Sample cost data. RESULTS: Sixty-one patients met inclusion criteria between 2007 and 2018. Among these, 28 patients underwent total thyroidectomies and received RAI treatments based on criteria pre-dating the 2015 ATA guidelines. Cumulative sum revealed significant decreases in the rate of total thyroidectomy following May 2015 (15.8% versus 59.5%, P = 0.002) and RAI following March 2013 (3.0% versus 32.1%, P = 0.002). There were no locoregional recurrences in either period. The average cost savings attributable to these institutional practice changes was $1580 per patient. CONCLUSIONS: De-escalation in surgical and RAI utilization for low-risk papillary thyroid cancer according to 2015 ATA guidelines is associated with a substantial decrease in real-world costs.

Construct validity of a low-cost medium-fidelity endoscopic sinus surgery simulation model.

OBJECTIVE: Assess construct validity of a low-cost medium-fidelity silicone injection molded model task trainer for endoscopic sinus surgery (ESS) training. METHODS: Fellowship-trained rhinologists, otolaryngology attendings, and otolaryngology residents at various levels of training performed sinus endoscopy and seven procedures on the model. Construct validity was evaluated by comparing novice to various levels of experienced performance using a validated checklist. RESULTS: Thirty-two subjects participated in this study. Otolaryngology attendings and postgraduate year (PGY) 3 to 5 otolaryngology residents significantly outperformed PGY 1 to 2 otolaryngology residents on most tasks in the task-specific checklist. CONCLUSIONS: This study demonstrated the construct validity of the low-cost medium-fidelity ESS model. LEVEL OF EVIDENCE: NA Laryngoscope, 129:1505-1509, 2019.

Fabrication and validation of a low-cost, medium-fidelity silicone injection molded endoscopic sinus surgery simulation model.

OBJECTIVES/HYPOTHESIS: Develop a low-cost, medium-fidelity model for education in endoscopic sinus surgery techniques. Establish face and content validity of the model based on the feedback of otolaryngology faculty including fellowship-trained rhinologists. STUDY DESIGN: Survey. METHODS: A novel silicone injection molded sinus model was constructed. Three fellowship-trained rhinologists and four general otolaryngologists were recruited to perform seven tasks and provide feedback of the model's performance via a 22-question Likert survey. RESULTS: Those surveyed strongly agreed the sinus model is useful for basic endoscopic skill acquisition such as camera skills (86%), hand-eye coordination (100%), nasal endoscopy skills (100%). Ratings of the model for training the specific tasks were consistently high. Neutral or lower were received for inferior turbinoplasty (14%), frontal balloon task (14%), understanding the ethmoid bulla (29%), and advanced sinus techniques (57%). All faculty strongly agreed they would be interested in using the model to train residents. CONCLUSIONS: Simulation models have proven efficacy in endoscopic skill and procedural training. The group developed a novel low-cost, medium-fidelity sinus training model utilizing three-dimensional modeling and printing. Testing of this model revealed high ratings for both face and construct validity for a range of endoscopic procedures. Strong interest in using this model for resident training was unanimous among all survey participants. LEVEL OF EVIDENCE: NA Laryngoscope, 127:781-786, 2017.

Failure pressures after repairs of 2-cm × 2.5-cm rhinologic dural defects in a porcine ex vivo model.

BACKGROUND: The objective of this study was to determine failure pressures of 6 rhinologic repair techniques of large skull base/dural defects in a controlled, ex vivo model. METHODS: Failure pressures of 6 dural repairs in a porcine model were studied using a closed testing apparatus; 24-mm × 19-mm dural defects were created; 40-mm × 34-mm grafts composed of porcine Duragen (Integra), fascia lata, and Biodesign (Cook) were used either with or without Tisseel (Baxter International Inc.) to create 6 repairs: Duragen/no glue (D/NG), Duragen/Tisseel (D/T), fascia lata/no glue (FL/NG), fascia lata/Tisseel (FL/T), Biodesign/no glue (B/NG), and Biodesign/Tisseel (B/T). Saline was infused at 30 mL/hour, applying even force to the underside of the graft until repair failure. Five trials were performed per repair type for a total of 30 repairs. RESULTS: Mean failure pressures were as follows: D/NG 1.361 ± 0.169 cmH2 O; D/T 9.127 ± 1.805 cmH2 O; FL/NG 0.200 ± 0.109 cmH2 O; FL/T 7.833 ± 2.657 cmH2 O; B/NG 0.299 ± 0.109 cmH2 O; and B/T 2.67 ± 0.619 cmH2 O. There were statistically significant differences between glued (Tisseel) and non-glued repairs for each repair category (p < 0.05). CONCLUSION: All glued repairs performed better than non-glued repairs. Both D/T and FL/T repairs performed better than B/T repairs. No repair tolerated pressures throughout the full range of adult supine intracranial pressure.

The role of simulation in teaching sinus surgery in otolaryngology residency: A survey of rhinologists.

BACKGROUND: Simulation is currently recognized as an effective surgical training tool. However, no standardized curriculum exists for endoscopic sinus surgery (ESS) simulation training. The goal of this study was to obtain an understanding of current ESS simulation use to aid the future development of an ESS training curriculum. METHODS: A 14-question survey regarding sinus simulation in residency training was developed through the education committee of the American Rhinologic Society. The survey was administered to academic American Rhinologic Society members in the United States, Canada, and Puerto Rico. The participants provided information regarding the type, amount, and effectiveness of simulation use in their residency program. RESULTS: Responses were received from 67 training programs; 45% of the programs endorsed using simulation training, although only 23.9% used ESS simulation, and all the programs used cadavers. Only 12.5% of respondent programs required ESS simulation training before operating on live patients, and trainees had an average of <6 hours of simulation training before live operations. A majority of respondents observed subjective improvement in residents' endoscope handling, dexterity, and understanding of anatomy after ESS simulation. The greatest obstacles identified were associated cost and lack of realistic simulators. CONCLUSION: A majority of responders observed improved surgical technique and knowledge in residents after simulation training. However, <25% of the survey responders used ESS simulation and cited cost and limited availability as the most common barriers. A curriculum of validated simulators has potential to improve the quality of ESS training during residency.

Two nested developmental waves demarcate a compartment boundary in the mouse lung.

The lung is a branched tubular network with two distinct compartments--the proximal conducting airways and the peripheral gas exchange region--separated by a discrete boundary termed the bronchoalveolar duct junction (BADJ). Here we image the developing mouse lung in three-dimensions (3D) and show that two nested developmental waves demarcate the BADJ under the control of a global hormonal signal. A first wave of branching morphogenesis progresses throughout embryonic development, generating branches for both compartments. A second wave of conducting airway differentiation follows the first wave but terminates earlier, specifying the proximal compartment and setting the BADJ. The second wave is terminated by a glucocorticoid signalling: premature activation or loss of glucocorticoid signalling causes a proximal or distal shift, respectively, in BADJ location. The results demonstrate a new mechanism of boundary formation in complex, 3D organs and provide new insights into glucocorticoid therapies for lung defects in premature birth.

Lung epithelial branching program antagonizes alveolar differentiation.

Mammalian organs, including the lung and kidney, often adopt a branched structure to achieve high efficiency and capacity of their physiological functions. Formation of a functional lung requires two developmental processes: branching morphogenesis, which builds a tree-like tubular network, and alveolar differentiation, which generates specialized epithelial cells for gas exchange. Much progress has been made to understand each of the two processes individually; however, it is not clear whether the two processes are coordinated and how they are deployed at the correct time and location. Here we show that an epithelial branching morphogenesis program antagonizes alveolar differentiation in the mouse lung. We find a negative correlation between branching morphogenesis and alveolar differentiation temporally, spatially, and evolutionarily. Gain-of-function experiments show that hyperactive small GTPase Kras expands the branching program and also suppresses molecular and cellular differentiation of alveolar cells. Loss-of-function experiments show that SRY-box containing gene 9 (Sox9) functions downstream of Fibroblast growth factor (Fgf)/Kras to promote branching and also suppresses premature initiation of alveolar differentiation. We thus propose that lung epithelial progenitors continuously balance between branching morphogenesis and alveolar differentiation, and such a balance is mediated by dual-function regulators, including Kras and Sox9. The resulting temporal delay of differentiation by the branching program may provide new insights to lung immaturity in preterm neonates and the increase in organ complexity during evolution.

Discrepancies between registered and published primary outcome specifications in analgesic trials: ACTTION systematic review and recommendations.

The National Institutes of Health released the trial registry ClinicalTrials.gov in 2000 to increase public reporting and clinical trial transparency. This systematic review examined whether registered primary outcome specifications (POS; ie, definitions, timing, and analytic plans) in analgesic treatment trials correspond with published POS. Trials with accompanying publications (n = 87) were selected from the Repository of Registered Analgesic Clinical Trials (RReACT) database of all postherpetic neuralgia, diabetic peripheral neuropathy, and fibromyalgia clinical trials registered at ClinicalTrials.gov as of December 1, 2011. POS never matched precisely; discrepancies occurred in 79% of the registry-publication pairs (21% failed to register or publish primary outcomes [PO]). These percentages did not differ significantly between industry and non-industry-sponsored trials. Thirty percent of the trials contained unambiguous POS discrepancies (eg, omitting a registered PO from the publication, "demoting" a registered PO to a published secondary outcome), with a statistically significantly higher percentage of non-industry-sponsored than industry-sponsored trials containing unambiguous POS discrepancies. POS discrepancies due to ambiguous reporting included vaguely worded PO registration; or failing to report the timing of PO assessment, statistical analysis used for the PO, or method to address missing PO data. At best, POS discrepancies may be attributable to insufficient registry requirements, carelessness (eg, failing to report PO assessment timing), or difficulty uploading registry information. At worst, discrepancies could indicate investigator impropriety (eg, registering imprecise PO ["pain"], then publishing whichever pain assessment produced statistically significant results). Improvements in PO registration, as well as journal policies requiring consistency between registered and published PO descriptions, are needed.

Adherence to CONSORT harms-reporting recommendations in publications of recent analgesic clinical trials: an ACTTION systematic review.

Recommendations for harms (ie, adverse events) reporting in randomized clinical trial publications were presented in a 2004 extension of the Consolidated Standards of Reporting Trials (CONSORT) statement. Our objectives were to assess harms reporting in 3 major pain journals (European Journal of Pain, Journal of Pain, and PAIN®) to determine whether harms reporting improved following publication of the 2004 CONSORT recommendations, and to examine study factors associated with adequacy of harms reporting. A total of 101 randomized, double-blind, noninvasive pharmacologic trials were identified in the 2000-2003 (epoch 1) and 2008-2011 (epoch 2) issues of these journals. Out of 10 reporting recommendations, the mean number fulfilled was 6.08 (SD2.65). Although more harms recommendations were fulfilled in epoch 2 (m(2)=6.49, SD2.66) than in epoch 1 (m(1)=5.39, SD2.52; P=0.04), only the recommendation to report harms per arm was satisfied by >90% of trials in epoch 2, whereas <60% reported withdrawals due to harms. Several trial characteristics (study design, participant type, pain type, frequency of treatment administration, treatment administration method, sponsor, and number of randomized participants) were significantly associated with harms reporting. However, when trial characteristics and epoch were entered into a multiple regression analysis, only trials studying pain patients, those using oral treatments, and industry-sponsored trials were associated with better harms reporting. Despite some improvement in harms reporting, greater improvement is needed to provide informative, consistent reporting of adverse events and safety in analgesic clinical trials.