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Tracheal tissue engineering has become an active area of interest among clinical and scientific communities; however, methods to evaluate success of in vivotissue-engineered solutions remain primarily qualitative. These evaluation methods have generally relied on the use of photographs to qualitatively demonstrate tracheal patency, endoscopy to image healing over time, and histology to determine the quality of the regenerated extracellular matrix. Although those generally qualitative methods are valuable, they alone may be insufficient. Therefore, to quantitatively assess tracheal regeneration, we recommend the inclusion of microcomputed tomography (μCT) to quantify tracheal patency as a standard outcome analysis. To establish a standard of practice for quantitative μCT assessment for tracheal tissue engineering, we recommend selecting a constant length to quantify airway volume. Dividing airway volumes by a constant length provides an averagecross-sectional area for comparing groups. We caution against selecting a length that is unjustifiably large, which may result in artificially inflating the average cross-sectional area and thereby diminishing the ability to detect actual differences between a test group and a healthy control. Therefore, we recommend selecting a length for μCT assessment that corresponds to the length of the defect region. We further recommend quantifying the minimumcross-sectional area, which does not depend on the length, but has functional implications for breathing. We present empirical data to elucidate the rationale for these recommendations. These empirical data may at first glance appear as expected and unsurprising. However, these standard methods for performing μCT and presentation of results do not yet exist in the literature, and are necessary to improve reporting within the field. Quantitative analyses will better enable comparisons between future publications within the tracheal tissue engineering community and empower a more rigorous assessment of results.Impact statementThe current study argues for the standardization of microcomputed tomography (μCT) as a quantitative method for evaluating tracheal tissue-engineered solutions in vivo or ex vivo.The field of tracheal tissue engineering has generally relied on the use of qualitative methods for determining tracheal patency. A standardized quantitative evaluation method currently does not exist. The standardization of μCT for evaluation of in vivostudies would enable a more robust characterization and allow comparisons between groups within the field. The impact of standardized methods within the tracheal tissue engineering field as presented in the current study would greatly improve the quality of published work.

Tracheal stenosis caused by congenital anomalies, tumors, trauma, or intubation-related damage can cause severe breathing issues, diminishing the quality of life, and potentially becoming fatal. Current treatment methods include laryngotracheal reconstruction or slide tracheoplasty. Laryngotracheal reconstruction utilizes rib cartilage harvested from the patient, requiring a second surgical site. Slide tracheoplasty involves a complex surgical procedure to splay open the trachea and reconnect both segments to widen the lumen. A clear need exists for new and innovative approaches that can be easily adopted by surgeons, and to avoid harvesting autologous tissue from the patient. This study evaluated the use of an electrospun patch, consisting of randomly layered polycaprolactone (PCL) nanofibers enveloping 3D-printed PCL rings, to create a mechanically robust, suturable, air-tight, and bioresorbable graft for the treatment of tracheal defects. The study design incorporated two distinct uses of PCL: electrospun fibers to promote tissue integration, while remaining air-tight when wet, and 3D-printed rings to hold the airway open and provide external support and protection during the healing process. Electrospun, reinforced tracheal patches were evaluated in an ovine model, in which all sheep survived for 10 weeks, although an overgrowth of fibrous tissue surrounding the patch was observed to significantly narrow the airway. Minimal tissue integration of the surrounding tissue and the electrospun fibers suggested the need for further improvement. Potential areas for further improvement include a faster degradation rate, agents to increase cellular adhesion, and/or an antibacterial coating to reduce the initial bacterial load.

Tracheal stenosis is a life-threatening disease and current treatments include surgical reconstruction with autologous rib cartilage and the highly complex slide tracheoplasty surgical technique. We propose using a sustainable implant, composed of a tunable, fibrous scaffold with encapsulated chondrogenic growth factor (transforming growth factor-beta3 [TGF-β3]) or seeded allogeneic rabbit bone marrow mesenchymal stromal cells (BMSCs). In vivofunctionality of these constructs was determined by implanting them in induced tracheal defects in rabbits for 6 or 12 weeks. The scaffolds maintained functional airways in a majority of the cases, with the BMSC-seeded group having an improved survival rate and the Scaffold-only group having a higher occurrence of more patent airways as determined by microcomputed tomography. The BMSC group had a greater accumulation of inflammatory cells over the graft, while also exhibiting normal epithelium, subepithelium, and cartilage formation. Overall, it was concluded that a simple, acellular scaffold is a viable option for tracheal tissue engineering, with the intraoperative addition of cells being an optional variation to the scaffolds.

IMPORTANCE: Emotions underlie and influence physician communications and relationships with patients and colleagues. Training programs to enhance emotional attunement, or emotional intelligence (EI), for physicians and assess training effects are scarce. OBJECTIVE: To assess whether an EI training program for otolaryngology residents and faculty affects patient satisfaction. DESIGN, SETTING, AND PARTICIPANTS: Prospective longitudinal, cohort study of physician residents and faculty in an EI training program at the Department of Otolaryngology, University of Kansas Medical Center, with annual training from 2005 to 2011. INTERVENTIONS: Three levels of interventions included 4 years of repeated EI assessment, 7 years of highly interactive EI training with high-risk/high-stress simulations, and ongoing modeling and mentoring of EI skills by faculty. MAIN OUTCOMES AND MEASURES: Four levels of outcome of the EI training were assessed with the following questions: Did participants enjoy the program? Could they apply the training to their practice? Did it change their behavior? Did it affect patient satisfaction? The Emotional Quotient Inventory (EQ-i) was administered to faculty and residents, and the Press Ganey Patient Satisfaction Survey was completed by patients. RESULTS: Ninety-seven percent of participants (103 of 106) reported that they enjoyed the programs, and 98% (104 of 106) reported that they have or could have applied what they learned. Participants demonstrated improvement in mean EQ-i scores from 102.19 (baseline/pretraining) to 107.29 (posttraining and assessment 1 year later; change, 6.71; 95% CI, 3.44-9.98). This increase was sustained in successive years, and these results were supported with linear growth curve analysis. The total department mean EQ-i score in pretraining year 2005 was 104.29 (“average” range), with posttraining scores in the “high average” range (112.46 in 2006, 111.67 in 2007, and 113.15 in 2008). An increase in EQ-i scores and EI training corresponded with an increase in patient satisfaction scores. Percentile rank patient satisfaction scores before EI training ranged from 85% to 90%; after training, scores ranged from 92% to 99%. CONCLUSIONS AND RELEVANCE: Emotional intelligence training positively influences patient satisfaction and may enhance medical education and health care outcome.

OBJECTIVE To determine whether previously published changes are maintained over time in children after adenotonsillectomy for sleep-disordered breathing using the validated Pediatric Sleep Questionnaire (PSQ) and the Conners Parent Rating Scale-Revised: Short Form (CPRS-R:S). DESIGN Prospective, nonrandomized interventional study. SETTING Ambulatory surgery center affiliated with an academic medical center. PATIENTS Long-term follow-up data were available (ranging from 2.4 to 3.6 years after adenotonsillectomy) for 44 of the 71 patients who completed our initial study comparing PSQ and CPRS-R:S data before and 6 months after surgery. INTERVENTIONS Parents completed the PSQ and CPRS-R:S at least 2 years after surgery. MAIN OUTCOME MEASURES Follow-up PSQ data and long-term changes in age- and sex-adjusted T scores for all 4 CPRS-R:S behavior categories (oppositional behavior, cognitive problems or inattention, hyperactivity, and the attention-deficit/hyperactivity disorder [ADHD] index) were determined for each patient. Linear mixed models were used to analyze the data. RESULTS Globally, across time, most variables remained below baseline levels (P < .05). There was a significant increase in PSQ scores during follow-up, but over this period they did not reach baseline levels. Comparing short-term with long-term follow-up, the Conners scores in all behavioral categories did not increase significantly (ADHD index, P = .61; cognitive problems or inattention, P = .02; hyperactivity, P < .001; and oppositional behavior, P < .001). The ADHD index at long-term follow-up was not different from that at baseline, a finding that might be attributable to the high degree of variability in this measure. CONCLUSIONS Improvements in sleep experienced by children after adenotonsillectomy for sleep-disordered breathing were not as great 2.5 years after surgery as they were 6 months after surgery but were still significant compared with baseline levels. Improvements in behavior were maintained in all categories of the Conners scores except for the ADHD index.Arch Otolaryngol Head Neck Surg. 2009;135(7):642-646--

OBJECTIVE To determine whether previously published changes are maintained over time in children after adenotonsillectomy for sleep-disordered breathing using the validated Pediatric Sleep Questionnaire (PSQ) and the Conners Parent Rating Scale-Revised: Short Form (CPRS-R:S). DESIGN Prospective, nonrandomized interventional study. SETTING Ambulatory surgery center affiliated with an academic medical center. PATIENTS Long-term follow-up data were available (ranging from 2.4 to 3.6 years after adenotonsillectomy) for 44 of the 71 patients who completed our initial study comparing PSQ and CPRS-R:S data before and 6 months after surgery. INTERVENTIONS Parents completed the PSQ and CPRS-R:S at least 2 years after surgery. MAIN OUTCOME MEASURES Follow-up PSQ data and long-term changes in age- and sex-adjusted T scores for all 4 CPRS-R:S behavior categories (oppositional behavior, cognitive problems or inattention, hyperactivity, and the attention-deficit/hyperactivity disorder [ADHD] index) were determined for each patient. Linear mixed models were used to analyze the data. RESULTS Globally, across time, most variables remained below baseline levels (P < .05). There was a significant increase in PSQ scores during follow-up, but over this period they did not reach baseline levels. Comparing short-term with long-term follow-up, the Conners scores in all behavioral categories did not increase significantly (ADHD index, P = .61; cognitive problems or inattention, P = .02; hyperactivity, P < .001; and oppositional behavior, P < .001). The ADHD index at long-term follow-up was not different from that at baseline, a finding that might be attributable to the high degree of variability in this measure. CONCLUSIONS Improvements in sleep experienced by children after adenotonsillectomy for sleep-disordered breathing were not as great 2.5 years after surgery as they were 6 months after surgery but were still significant compared with baseline levels. Improvements in behavior were maintained in all categories of the Conners scores except for the ADHD index.Arch Otolaryngol Head Neck Surg. 2009;135(7):642-646--

OBJECTIVE To determine changes in behavior and sleep in children before and after adenotonsillectomy for sleep-disordered breathing (SDB) using the validated Pediatric Sleep Questionnaire (PSQ) and Conners' Parent Rating Scale–Revised Short Form (CPRS-RS). DESIGN Prospective, nonrandomized study. SETTING Ambulatory surgery center affiliated with an academic medical center. PATIENTS A total of 117 consecutive children (61 boys and 56 girls) (mean [SD] age, 6.5 [3.1] years) who were clinically diagnosed as having SDB and who had undergone adenotonsillectomy. Complete follow-up data were available in 71 of 117 patients (61%). INTERVENTIONS Parents completed the PSQ and CPRS-RS before surgery and 6 months after surgery. MAIN OUTCOME MEASURES Changes in age- and sex-adjusted T scores for all 4 CPRS-RS behavior categories (oppositional behavior, cognitive problems or inattention, hyperactivity, and Conners' attention-deficit/hyperactivity disorder [ADHD] index) were determined for each subject before and after surgery. Changes in PSQ scores from a select 22-item sleep-related breathing disorder subscale were also determined. RESULTS Preoperatively, the mean (SD) T scores on the CPRS-RS for oppositional behavior, cognitive problems or inattention, hyperactivity, and ADHD index were 59.4 (13.7), 59.5 (13.6), 62.0 (14.4), and 59.9 (13.4), respectively. A T score of 60.0 in any category placed a child in the at-risk group. Postoperatively, T scores for each category were 51.0 (9.6), 51.2 (8.8), 52.4 (10.52), and 50.6 (7.8), respectively. All changes were statistically significant (P < .001) and clinically significant by approximating a change of 1 SD from the baseline score. For the PSQ, the preoperative and postoperative mean (SD) scores were 0.6 (0.1) and 0.1 (0.1), respectively, on a scale of 0 to 1, with scores higher than 0.33 suggesting obstructive sleep apnea. Correlations between sleep and behavior scores were statistically significant before surgery (P = .004 for ADHD index and cognitive problems, P = .008 for oppositional behavior) and after surgery (P = .049 for cognitive problems, P = .03 for oppositional behavior). Higher baseline T scores for the CPRS-RS were associated with larger changes in T scores for the CPRS-RS in all 4 domains (oppositional behavior, cognitive problems or inattention, hyperactivity, and ADHD index). CONCLUSIONS Children diagnosed as having SDB experience improvement in both sleep and behavior after adenotonsillectomy. The PSQ and CPRS-RS may be useful adjuncts for screening and following children who undergo adenotonsillectomy for SDB.Arch Otolaryngol Head Neck Surg. 2007;133(10):974-979--

OBJECTIVES To further validate a questionnaire about symptoms of childhood obstructive sleep apnea (OSA) and to compare the questionnaire with polysomnography in their ability to predict outcomes of adenotonsillectomy. DESIGN Retrospective analysis of data from a longitudinal study. SETTING University-based sleep disorders laboratory. PARTICIPANTS The Washtenaw County Adenotonsillectomy Cohort, comprising 105 children aged 5.0 to 12.9 years at entry. INTERVENTION Parents completed the 22-item Sleep-Related Breathing Disorder (SRBD) scale of the Pediatric Sleep Questionnaire, and children underwent polysomnography before and 1 year after clinically indicated adenotonsillectomy (n = 78, usually for suspected OSA) or unrelated surgical care (n = 27). MAIN OUTCOME MEASURES Findings from commonly used hyperactivity ratings, attention tests, and sleepiness tests. RESULTS At baseline, a high SRBD scale score (1 SD above the mean) predicted an approximately 3-fold increased risk of OSA on polysomnography (odds ratio, 2.80; 95% confidence interval, 1.68-4.68). One year later, OSA and symptoms had largely resolved, but a high SRBD score still predicted an approximately 2-fold increased risk of residual OSA on polysomnography (odds ratio, 1.89; 95% confidence interval, 1.13-3.18). Compared with several standard polysomnographic measures of OSA, the baseline SRBD scale better predicted initial hyperactivity ratings and 1-year improvement, similarly predicted sleepiness and its improvement, and similarly failed to predict attention deficit or its improvement. CONCLUSIONS The SRBD scale predicts polysomnographic results to an extent useful for research but not reliable enough for most individual patients. However, the SRBD scale may predict OSA-related neurobehavioral morbidity and its response to adenotonsillectomy as well or better than does polysomnography.Arch Otolaryngol Head Neck Surg. 2007;133:216-222 --

To assess tolerance of esophageal pressure monitoring (EPM) among 5- to 13-year-old children during research polysomnography at study entry and again 1 year later.

Objectives/HypothesisTo design and develop an e‐ternal biodegradable tracheal stent for use in airway reconstructive surgery.

The occurrence of second malignant neoplasms (SMN) in children who survive their primary malignancy is a major cause for concern. Two children with diagnoses of intermediate-risk acute lymphoblastic leukemia (ALL) at 22 months and 2 years of age were treated with multiagent chemotherapy and prophylactic cranial irradiation. They experienced painless parotid swelling 6 and 7 years after successful treatment of the ALL. The patients underwent total parotidectomy, and a diagnosis of mucoepidermoid carcinoma was made. Both patients experienced transient facial nerve paresis. The incidence of SMN in children successfully treated for primary malignancies is 3 to 12. Salivary gland tumors are being increasingly described in this setting. Long-term follow-up for survivors of childhood ALL is recommended with prompt assessment and resection of parotid swellings, particularly in children who have received cranial irradiation.

• The anterior cricoid split has been used as an alternative to tracheotomy in neonates who have been difficult to extubate. The procedure is described in detail. We review our experience with eight patients who underwent an anterior cricoid split, and we have correlated success with preoperative data in an attempt to establish criteria for patient selection.(Arch Otolaryngol Head Neck Surg 1986;112:972-975)

We report on a family with early-onset sensorineural hearing loss, abnormal retinal pigment epithelium granularity, accumulation of creamy-white lesions at the level of the retinal pigment epithelium particularly superior to the arcade, and selective discoloration (brown) of molars or canine deciduous teeth that follows an apparent autosomal recessive inheritance pattern. This appears to be a new syndrome that can be distinguished from the known otodental, oculo-acoustic and flecked retina syndromes by the occurrence of distinct dental and ocular abnormalities. Am. J. Med. Genet. 75:13–17, 1998. © 1998 Wiley-Liss, Inc.

The field of drug-induced sleep endoscopy (DISE) has grown considerably over the last 10∼15 years, to now include its use in pediatric patients. In this review article, we outline our approach to the use of this technology in Children with Airway Obstruction, most specifically in the management of children with airway obstruction and known or suspected adenotonsillar enlargement.