Clinical presentation and airway management of tracheal atresia: A systematic review

OBJECTIVES

Tracheal atresia (TA) is a rare congenital condition that typically requires an unexpected and emergent resuscitation in the delivery room. The mortality rate associated is very high, with only a few long-term survival cases reported. We describe the findings of a systematic review on the clinical presentation and airway management of TA.

METHODS

Using the keywords "tracheal atresia", "tracheal agenesis" and "tracheal hypoplasia" a search through Embase and Pubmed databases was performed following the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) protocol. Articles published from 1950 to 2015 in English, French, Italian, Portuguese and Spanish were included. Exclusion criteria were cases of stillborn, and unclear diagnosis or outcome.

RESULTS

149 cases of TA were identified after reviewing 1125 initial references. There was a male preponderance (65%), and associated malformations were described in 94.2% of patients. Prenatal ultrasound was abnormal in 56.3% of cases, with polyhydramnios being the most common finding. The most frequent type of TA was Faro Type C. 94 (41.3%) patients did not survive beyond the first 24 h of life. Only 13 (8.4%) patients survived more than three months of life, after undergoing a variety of surgical approaches.

CONCLUSION

This review, which to our knowledge is the largest one to date, confirms that TA is a rare malformation, occurs more frequently in males, and has a very high mortality rate. Depending on the presence and type of concomitant malformation, as well of the length of the remaining trachea, different surgical management options are described.

Evolution of gender representation among Canadian OTL-HNS residents: a 27-year analysis

Background

The proportion of females enrolling into medical schools has been growing steadily. However, the representation of female residents among individual specialties has shown considerable variation. The purpose of this study was to compare the trends of gender representation in Otolaryngology – Head and Neck Surgery (OTL-HNS) residency programs with other specialty training programs in Canada. In order to contextualize these findings, a second phase of analysis examined the success rate of applicants of different genders to OTL-HNS residency programs.

Method

Anonymized data were obtained from the Canadian Residency Matching Service (CaRMS) and from the Canadian Post-M.D. Education Registry (CAPER) from 1988 to 2014. The differences in gender growth rates were compared to other subspecialty programs of varying size. Descriptive analysis was used to examine gender representation among OTL-HNS residents across years, and to compare these trends with other specialties. Bayesian hierarchical models were fit to analyze the growth in program rates in OTL-HNS based on gender.

Results

CaRMS and CAPER data over a 27 year period demonstrated that OTL-HNS has doubled its female representation from 20% to 40% between 1990 and 1994 and 2010-2014. The difference in annual growth rate of female representation versus male representation in OTL-HNS over this time period was 2.7%, which was similar to other large specialty programs and surgical subspecialties. There was parity in success rates of female and male candidates ranking OTL-HNS as their first choice specialty for most years.

Conclusions

Female representation in Canadian OTL-HNS residency programs is steadily increasing over the last 27 years. Large variation in female applicant acceptance rates was observed across Canadian universities, possibly attributable to differences in student body or applicant demographics. Factors influencing female medical student career selection to OTL-HNS require further study to mitigate disparities in gender representation and identify barriers to prospective female OTL-HNS applicants.

Development and validation of a 3D-printed model of the ostiomeatal complex and frontal sinus for endoscopic sinus surgery training

BACKGROUND

Endoscopic sinus surgery poses unique training challenges due to complex and variable anatomy, and the risk of major complications. We sought to create and provide validity evidence for a novel 3D-printed simulator of the nose and paranasal sinuses.

METHODS

Sinonasal computed tomography (CT) images of a patient were imported into 3D visualization software. Segmentation of bony and soft tissue structures was then performed. The model was printed using simulated bone and soft tissue materials. Rhinologists and otolaryngology residents completed 6 prespecified tasks including maxillary antrostomy and frontal recess dissection on the simulator. Participants evaluated the model using survey ratings based on a 5-point Likert scale. The average time to complete each task was calculated. Descriptive analysis was used to evaluate ratings, and thematic analysis was done for qualitative questions.

RESULTS

A total of 20 participants (10 rhinologists and 10 otolaryngology residents) tested the model and answered the survey. Overall the participants felt that the simulator would be useful as a training/educational tool (4.6/5), and that it should be integrated as part of the rhinology training curriculum (4.5/5). The following responses were obtained: visual appearance 4.25/5; realism of materials 3.8/5; and surgical experience 3.9/5. The average time to complete each task was lower for the rhinologist group than for the residents.

CONCLUSION

We describe the development and validation of a novel 3D-printed model for the training of endoscopic sinus surgery skills. Although participants found the simulator to be a useful training and educational tool, further model development could improve the outcome.

Securing an OTL-HNS residency: how competitive is it? Comparing medical student perceptions to actual Canadian statistics

BACKGROUND

The residency match is an important event in an aspiring physician's career. Otolaryngology - Head and Neck Surgery (OTL-HNS) is a surgical specialty that has enjoyed high numbers of applicants to its residency programs. However, recent trends in Canada show a decline in first-choice applicants to several surgical fields. Factors thought to influence a medical student's choice include role models, career opportunities and work-life balance. The notion of perceived competitiveness is a factor that has not yet been explored. This study sought to compare competitiveness of OTL-HNS, as perceived by Canadian medical students to residency match statistics published yearly by CaRMS (Canadian Residency Matching Service), with the hope of informing future decisions of surgical residency programs.

METHODS

An electronic survey was created and distributed to all medical students enrolled in the 17 Canadian medical schools. After gathering demographic information, students were asked to rank what they perceived to be the five most competitive disciplines offered by CaRMS. They were also asked to rank surgical specialties from most to least competitive. Publically available data from CaRMS was then collected and analyzed to determine actual competitiveness of admissions to Canadian OTL-HNS residency programs.

RESULTS

1194 students, from first to fourth year of medical school, completed the survey. CaRMS statistics over the period from 2008 to 2014 demonstrated that the five most competitive specialties were Plastic Surgery, Dermatology, Ophthalmology, Emergency Medicine and OTL-HNS. Among surgical disciplines, OTL-HNS was third most competitive, where on average 72% of students match to their first-choice discipline. When students were questioned, 35% ranked OTL-HNS amongst the top five most competitive. On the other hand 72%, 74% and 80% recognized Opthalmology, Dermatology and Plastic Surgery as being among the five most competitive, respectively. We found that fourth-year medical students were significantly more knowledgeable about the competitiveness of both OTL-HNS and Plastic Surgery compared to first-year students (p < 0.01).

CONCLUSION

Overall, Canadian medical students may underestimate the competitiveness of OTL-HNS. Furthermore, competitiveness would appear to be a concept that resonates with medical students during the match process.

Development and validation of a septoplasty training model using 3-dimensional printing technology

BACKGROUND

Providing alternative training modalities may improve trainees' ability to perform septoplasty. Three-dimensional printing has been shown to be a powerful tool in surgical training. The objectives of this study were to explain the development of our 3-dimensional (3D) printed septoplasty training model, to assess its face and content validity, and to present evidence supporting its ability to distinguish between levels of surgical proficiency.

METHODS

Imaging data of a patient with a nasal septal deviation was selected for printing. Printing materials reproducing the mechanical properties of human tissues were selected based on literature review and prototype testing. Eight expert rhinologists, 6 senior residents, and 6 junior residents performed endoscopic septoplasties on the model and completed a postsimulation survey. Performance metrics in quality (final product analysis), efficiency (time), and safety (eg, perforation length, nares damage) were recorded and analyzed in a study-blind manner.

RESULTS

The model was judged to be anatomically correct and the steps performed realistic, with scores of 4.05 ± 0.82 and 4.2 ± 1, respectively, on a 5-point Likert scale. Ninety-two percent of residents desired the simulator to be integrated into their teaching curriculum. There was a significant difference (p < 0.05) between the expert, intermediate, and novice groups in time taken and nares cuts, whereas other performance metrics showed no significant difference.

CONCLUSION

To our knowledge, there are no other simulator training models for septoplasty. Our model incorporates 2 different materials mixed into the 3 relevant consistencies necessary to simulate septoplasty. Our findings provide evidence supporting the validity of the model.

Pediatric temporal bone fractures: A case series

OBJECTIVES

Temporal bone fractures are relatively common findings in patients with head trauma. The aim of this study was to evaluate the characteristics of temporal bone fractures in the pediatric population.

STUDY DESIGN

Retrospective case series. Tertiary care pediatric academic medical center.

METHODS

The medical records of patients aged 18 years or less diagnosed with a temporal bone fracture at the Montreal Children's Hospital from January 2000 to August 2014 were reviewed. Patient demographics, clinical presentation, mechanism of injury and complications were analyzed. Imaging studies and audiograms were also evaluated.

RESULTS

Out of 323 patients presenting to the emergency department with a skull fracture, 61 presented with a temporal bone fracture. Of these, 5 presented with bilateral fractures. 47 patients had associated fractures, and 3 patients deceased. We observed a male to female ratio of 2.8:1, and the average age was 9.5 years. Motor vehicle accidents were the primary mechanism of injury (53%), followed by falls (21%) and bicycle or skateboard accidents (10%). The most common presenting signs included hemotympanum, decreased or loss of consciousness, facial swelling and nausea and vomiting. 8 patients had otic involvement on computed tomography scans, and 30 patients had documented hearing loss near the time of accident with a majority being conductive hearing loss. 17 patients underwent surgical management of intracranial pressure.

CONCLUSION

In children, fractures of the temporal bone were most often caused by motor vehicle accidents and falls. It is common for these patients to have associated fractures.

Lund-Mackay and modified Lund-Mackay score for sinus surgery in children with cystic fibrosis

OBJECTIVE

Patients with cystic fibrosis (CF) frequently present with severe sinonasal disease often requiring radiologic imaging and surgical intervention. Few studies have focused on the relationship between radiologic scoring systems and the need for sinus surgery in this population. The objective of this study is to evaluate the Lund-Mackay (LM) and modified Lund-Mackay (m-LM) scoring systems in predicting the need for sinus surgery or revision surgery in patients with CF.

METHODS

We performed a retrospective chart review of CF patients undergoing computed tomography (CT) sinus imaging at a tertiary care pediatric hospital from 1995 to 2008. Patient scans were scored using both the LM and m-LM systems and compared to the rate of sinus surgery or revision surgery. Receiver-operator characteristics curves (ROC) were used to analyze the radiological scoring systems.

RESULTS

A total of 41 children with CF were included in the study. The mean LM score for patients undergoing surgery was 17.3 (±3.1) compared to 11.5 (±6.2) for those treated medically (p<0.01). For the m-LM, the mean score of patients undergoing surgery was 20.3 (±3.5) and 13.5 (±7.3) for those medically treated (p<0.01). Using a ROC curve with a threshold score of 13 for the LM, the sensitivity was 89.3% (95% CI of 72-98) and specificity of 69.2% (95% CI of 39-91). At an optimal score of 19, the m-LM system produced a sensitivity of 67.7% (95% CI of 48-84) and specificity of 84.6% (95% CI of 55-98).

CONCLUSION

The modified Lund-Mackay score provides a high specificity while the Lund-Mackay score a high sensitivity for CF patients who required sinus surgery. The combination of both radiologic scoring systems can potentially predict the need for surgery in this population.

Development of the McGill simulator for endoscopic sinus surgery: a new high-fidelity virtual reality simulator for endoscopic sinus surgery

BACKGROUND

The technical challenges of endoscopic sinus surgery (ESS) and the high risk of complications support the development of alternative modalities to train residents in these procedures. Virtual reality simulation is becoming a useful tool for training the skills necessary for minimally invasive surgery; however, there are currently no ESS virtual reality simulators available with valid evidence supporting their use in resident education. Our aim was to develop a new rhinology simulator, as well as to define potential performance metrics for trainee assessment.

METHODS

The McGill simulator for endoscopic sinus surgery (MSESS), a new sinus surgery virtual reality simulator with haptic feedback, was developed (a collaboration between the McGill University Department of Otolaryngology-Head and Neck Surgery, the Montreal Neurologic Institute Simulation Lab, and the National Research Council of Canada). A panel of experts in education, performance assessment, rhinology, and skull base surgery convened to identify core technical abilities that would need to be taught by the simulator, as well as performance metrics to be developed and captured.

RESULTS

The MSESS allows the user to perform basic sinus surgery skills, such as an ethmoidectomy and sphenoidotomy, through the use of endoscopic tools in a virtual nasal model. The performance metrics were developed by an expert panel and include measurements of safety, quality, and efficiency of the procedure.

CONCLUSION

The MSESS incorporates novel technological advancements to create a realistic platform for trainees. To our knowledge, this is the first simulator to combine novel tools such as the endonasal wash and elaborate anatomic deformity with advanced performance metrics for ESS.

Nationwide study of publication misrepresentation in applicants to residency

OBJECTIVES

This study was conducted to assess the prevalence of research publication misrepresentation amongst Canadian Resident Matching Service (CaRMS) applicants to a single surgical subspecialty residency as a potential means of assessing professional behaviour.

METHODS

The authors reviewed CaRMS application forms to Canadian otolaryngology residency programmes over a 3-year period (2006-2008) for peer-reviewed publications reported as 'published', 'accepted' and 'in press'. Citations were verified by searching PubMed, Google Scholar and electronic journals. Misrepresentation was defined as any of: (i) falsely claimed authorship of an existing article; (ii) claimed authorship of a non-existing article, and (iii) improper ordering of authorship. Outcomes included descriptive statistics, as well as sub-analyses pertaining to age, gender, affiliated medical school and academic degree, and number of publications per applicant.

RESULTS

A total of 427 peer-reviewed publications were reported by 124 of 182 applicants (68% of applicants reported at least one publication). Of the 385 verifiable publications, 47 (12% of articles) were misrepresented by 29 applicants (23% of applicants claiming publication) self-reporting at least one publication. Age, gender, location of medical training, prior academic degree and number of citations per applicant did not relate to likelihood of misrepresentation (p > 0.05).

CONCLUSIONS

This study documents the nationwide prevalence of publication misrepresentation amongst applicants to Canadian otolaryngology residency programmes. The high rate of misrepresentation aligns with data reported in the literature and highlights the need to institute measures to dissuade graduates from this form of unprofessional behaviour.

Synchronous airway lesions in children: an analysis of characteristics and comorbidities

OBJECTIVES

To analyze the characteristics and the associated medical co-morbidities in children with synchronous airway lesions (SALs) found during rigid bronchoscopy.

METHODS

Retrospective case series and chart review of patients who were found to have more than one airway lesion after undergoing airway evaluation via rigid endoscopy at a tertiary care pediatric hospital between 2001 and 2011. Patient demographics, presence of associated non-airway pathologies, and the number and types of airway lesions were collected. For analysis, airway lesions were classified based on the anatomical subsites involved (supraglottic, glottic, subglottic, tracheal and bronchial).

RESULTS

Out of 592 rigid bronchoscopies performed, there were 73 cases with SALs (12.3%). Of these, only 20% of patients were term infants without associated congenital anomalies. Over 70% of patients with SALs have combinations of lesions involving the trachea, subglottis and supraglottis. Neurological anomalies and GERD were both independently associated with a three-time increase in the odds of having synchronous involvement of these three anatomical subsites (OR 3.15, 95% CI 1.06-9.41; OR 3.0, 95% CI 1.05-8.50, respectively). Glottic lesions were present in 28.7% of patients. Prematurity and cardiac anomalies were both associated with tendency of doubling the odds of glottic lesions (OR 2.34, 95% CI 0.84-6.52; OR 2.0, 95% CI 0.76-5.60, respectively). Overall, almost 10% of newly diagnosed lesions in context of SALs required an additional intervention.

CONCLUSIONS

The majority of patients with SALs are either born prematurely or have associated congenital anomalies. In SAL patients with associated neurological anomalies or GERD, the lesions are more likely to be localized to the supraglottis, subglottis and trachea whereas prematurity and cardiac anomalies could both be increasing the odds of a glottic lesion. High suspicious index should be kept in mind when rigid bronchoscopy is performed to not miss an associated lesion.

Acceptability and reliability of multiple mini interviews for admission to otolaryngology residency

OBJECTIVES/HYPOTHESIS

To evaluate the acceptability and reliability of the Multiple Mini Interview (MMI) for the selection of applicants to an Otolaryngology-Head and Neck (OTL-HNS) residency program.

STUDY DESIGN

Prospective observational study.

METHODS

Canadian medical graduates applying to the OTL-HNS residency program at McGill University in 2011 and 2012 underwent a 7-station MMI. Upon completion, the major stakeholders commented on and rated various aspects of the MMI using a 7-point Likert scale. Descriptive statistics were used to analyze the quantitative portion of the exit survey, while content analysis and thematic description was applied to qualitative data. Interrater reliability was examined with intraclass correlation coefficients.

RESULTS

Data was collected from 45 applicants and 18 evaluators. The majority of applicants (>80%) felt that the MMI helped them present their strengths and was free of any gender, cultural, or age bias. Assessors (>85%) agreed the MMI evaluated a valid range of competencies, and that it tested more aspects of an applicant than did traditional interviews. Both applicants and assessors (>70%) agreed that the MMI was a fair process, and both preferred it over the traditional interview. Overall, interrater reliability of the MMI was good.

CONCLUSION

This is the first study to examine how the MMI interview process can be adapted for admission to an OTL-HNS residency program, while showing both good acceptability for all major stakeholders and good reliability.

The evolution of racial, ethnic, and gender diversity in US otolaryngology residency programs

OBJECTIVE

To examine the evolution of racial, ethnic, and gender diversity in US otolaryngology-head and neck surgery residency programs and compare these figures with other residency programs.

DESIGN

Retrospective database review.

SETTING

US residency programs.

METHODS

Information concerning minority and female representation in US residency programs was obtained from annually published graduate medical education reports by the Journal of the American Medical Association from 1975 to 2010. Minority representation among US population and university students was obtained from the US Census Bureau. The racial, ethnic, and gender diversity of otolaryngology residents was then compared with other medical fields (general surgery, family medicine, and internal medicine).

RESULTS

Underrepresentation in otolaryngology-head and neck surgery is particularly disconcerting for African Americans (-2.3%/y, P = .09) and Native Americans (1.5%/y, P = .11) given their nonsignificant annual growth rates. Hispanic representation (17.3%/y, P < .0001) is growing in otolaryngology but is half the rate of growth of the Hispanic American population (32.8%/y, P < .0001). There is nonetheless promise for women (70.6%/y, P < .0001) and Asian Americans (63.0%/y, P < .0001), who demonstrated statistically significant growth trends.

CONCLUSION

To our knowledge, this is the first study to describe the evolution of female and minority representation among US otolaryngology residents. Despite increasing gender, ethnic, and racial diversity among medical residents in general, female and certain minority group representation in US otolaryngology residency programs is lagging. These findings are in contrast to rising trends of diversity within other residency programs including general surgery.

Racial and Ethnic Diversity of US Otolaryngology Residents

Objective: Racial and ethnic minorities constitute a growing portion of the US population including the medical profession. The purpose of this study was to examine the evolution of racial and ethnic diversity in US otolaryngology residency programs and to compare it to minority representation in other surgical and non-surgical residency programs.

Method: Information concerning minority representation in US residency programs was obtained from annually published Graduate Medical Education reports by the Journal of the American Medical Association from 1980 to 2010. The diversity of otolaryngology residents was then compared to other medical fields (general surgery, family medicine, and internal medicine).

Results: Overall, minority representation among US medical residents increased dramatically from 1980 to 2010 (20% to 43.9%). However, otolaryngology residents remain a less diverse group with only 29% minority representation in 2010. In contrast to other residency programs compared, African American (AA) and Hispanic (H) representation were consistently underrepresented among otolaryngology residents (AA = 3.1%, H = 4.3%) relative to all residents (AA = 5.7%, H = 6.4%) in recent years.

Conclusion: Despite rising racial and ethnic diversity among medical residents in general, minority representation in US otolaryngology residency programs is lagging. This finding is in contrast to rising trends of diversity within other residency programs including general surgery.

Multiple Mini Interview for Selection into OTL Residency

Objective: 1) To determine the reliability of the Multiple Mini Interview (MMI) for resident selection into an otolaryngology–head and neck surgery (OTL-HNS) program. 2) To assess the degree of acceptance by major stakeholders (interviewers and applicants) towards the MMI when compared to traditional interviews.

Method: Canadian medical graduates applying to OTL-HNS residency programs underwent MMI in 2011 and 2012. MMI had 7 stations evaluating unique candidate attributes. Stations include surgical skills assessment and 2 simulation scenarios with standardized actors for noncognitive traits. Reliability was determined, and upon completion, stakeholders rated aspects MMI using 7-point Likert scale.

Results: Data were collected from a total of 45 applicants and 19 evaluators. Overall interrater reliability of the MMI was good. The majority of applicants (>80%) felt that MMI helped them present their strengths and that it did not have any gender, cultural, or age bias. Assessors (>85%) felt that the MMI evaluated a valid range of competencies and that it tested more aspects of an applicant than traditional interviews. Both applicants and assessors (>70%) agreed that the MMI was a fair process, and both preferred the MMI over the traditional interview.

Conclusion: The MMI is a reliable tool for the selection of applicants to an OTL-HNS residency program. It is well accepted by both applicants and assessors, with the majority of stakeholders preferring the MMI over traditional interviews.

Asthma: the great imitator in foreign body aspiration?

OBJECTIVE

To determine the prevalence of underlying lower airway inflammatory conditions in children who underwent rigid bronchoscopy (RB) for a suspected foreign body aspiration (FBA) in the tracheobronchial tree and to identify the characteristics of patients who could benefit from a trial of antiasthma treatment prior to undergoing a diagnostic bronchoscopy.

DESIGN

Retrospective chart review.

SETTING

Children with suspected FBA in the tracheobronchial tree who underwent RB at the Montreal Children's Hospital (2001-2009).

METHODS

Patient characteristics such as clinical, radiologic, and bronchoscopic findings on presentation, as well as prior use of inhaled bronchodilators or corticosteroids, were analyzed. A p value < .05 was considered significant.

MAIN OUTCOME MEASURES

Use of inhaled bronchodilators or corticosteroids, signs, symptoms, and radiologic and bronchoscopic findings on presentation.

RESULTS

Fifty-five children underwent an RB for suspected FBA. Foreign bodies were found in 36 subjects. Asthmatics were significantly more likely to have a negative bronchoscopy than nonasthmatics (80.0% vs 30.0%, p < .05). Otherwise, clinical and radiologic findings were not significantly different in these two groups. The median time between the suspected choking event and the first otolaryngology evaluation was 14 days in asthmatics (range 5 hours-90 days), whereas it was 16 hours in nonasthmatics (range 0.5 hours-120 days).

CONCLUSION

A conservative approach cannot be justified in suspected asthmatic children with possible FBA, in whom the indications for diagnostic bronchoscopy must be tailored to each patient to ensure a timely diagnosis.

Are Canadian general surgery residents ready for the 80-hour work week? A nationwide survey

BACKGROUND

The purpose of this study was to describe Canadian general surgery residents' perceptions regarding potential implementation of work-hour restrictions.

METHODS

An ethics review board-approved, Web-based survey was submitted to all Canadian general surgery residency programs between April and July 2009. Questions evaluated the perceived effects of an 80-hour work week on length of training, operative exposure, learning and lifestyle. We used the Fisher exact test to compare senior and junior residents' responses.

RESULTS

Of 360 residents, 158 responded (70 seniors and 88 juniors). Among them, 79% reported working 75-100 hours per week. About 74% of seniors believed that limiting their work hours would decrease their operative exposure; 43% of juniors agreed (p < 0.001). Both seniors and juniors thought limiting their work hours would improve their lifestyle (86% v. 96%, p = 0.12). Overall, 60% of residents did not believe limiting work hours would extend the length of their training. Regarding 24-hour call, 60% of juniors thought it was hazardous to their health; 30% of seniors agreed (p = 0.001). Both senior and junior residents thought abolishing 24-hour call would decrease their operative exposure (84% v. 70%, p = 0.21). Overall, 31% of residents supported abolishing 24-hour call. About 47% of residents (41% seniors, 51%juniors, p = 0.26) agreed with the adoption of the 80-hour work week.

CONCLUSION

There is a training-level based dichotomy of opinion among general surgery residents in Canada regarding the perceived effects of work hour restrictions. Both groups have voted against abolishing 24-hour call, and neither group strongly supports the implementation of the 80-hour work week.

Sharp Foreign Body Aspiration Patients: Are They Different?

Objective: Compare and contrast patients with sharp foreign body aspiration (FBA) in the airways to other non-sharp FBA in terms of age, social background, presentation, and nature of foreign body.

Method: Case series of patients with FBA in airways and the upper digestive tract in multi-centers, between Jan 2004 to Dec 2009.

Results: Around 10 percent of patients had sharp FBA in the airway. We noticed that they are overall older. They mostly have the same social background. Most of them gave clear history of sharp FBA. Imaging was useful in the majority of patients. Most sharp FBA happened with the same object.

Conclusion: Patients with sharp FBA are different in terms of age, social background, presentation, and nature of FBA when compared to other non-sharp FBA.

Pneumatic video-otoscopy teaching improves the diagnostic accuracy of otitis media with effusion: results of a randomized controlled trial

BACKGROUND

the diagnostic accuracy of otitis media with effusion (OME) has been shown to be poor among medical students, residents, and practicing physicians.

OBJECTIVE

to determine if the use of pneumatic video-otoendoscopic examination (VOE) improves the diagnostic accuracy of OME among residents.

METHODS

pediatric residents were randomized into a "pneumatic" examination group (intervention) and a "still" examination group (control). The control group viewed a set of 25 still VOE images of the tympanic membranes of both normal and OME ears. The intervention group viewed the same still images but with the addition of pneumatic VOE assessments. Each resident documented each of his or her diagnoses as normal or OME. The accuracy of assessment for both the static and the pneumatic methods was compared.

RESULTS

twenty-nine pediatric residents participated in this study: 15 in the intervention group and 14 in the control group. The overall diagnostic accuracy was 91% for the intervention group versus 78% for the control group (p  =  .0003).

CONCLUSION

pneumatic video-otoscopy teaching improves the diagnostic accuracy of OME among residents.

Cervical esophageal duplication cyst: case report and review of the literature

Cervical esophageal duplication cysts are rare congenital anomalies that can be successfully managed surgically. These anomalies are rare causes of upper airway obstruction. We present here a case of a cervical esophageal duplication cyst in an infant, along with a review of the literature concerning this anomaly.

Linking laryngopharyngeal reflux to otitis media with effusion: pepsinogen study of adenoid tissue and middle ear fluid

HYPOTHESIS/OBJECTIVES

Laryngopharyngeal reflux (LPR) was recently implicated in the etiology of otitis media with effusion (OME). To study the hypothesis that gastric juice reaches the middle ear through the nasopharynx and eustachian tube, we evaluated the presence of pepsinogen in the adenoid tissues of children with otitis media with effusion (OME) and compared them with the tissues of a control group of children without OME.

METHODS

In the study group, middle ear effusions (MEEs) and adenoidal tissue biopsies were obtained from patients undergoing simultaneous tympanostomy tube placement and adenoidectomy. In the control group, adenoid specimens were taken during adenoidectomy (+/- tonsillectomy) from children with no history of OME. The adenoid tissues were analyzed immunohistochemically to confirm the presence of pepsinogen. Normal gastric tissue was used as a positive control and lymphatic tissue as a negative control. Total pepsinogen levels of MEE were measured with enzyme-linked immunosorbent assay.

RESULTS

Adenoid tissue of the OME group (n = 25) demonstrated significantly higher pepsinogen immunoreactivity when compared with the adenoid tissue of the control group (n = 29), specifically in staining of both the epithelia (p < .0001) and the subepithelia, (p < .001). The presence of pepsinogen was detected in 84% of MEEs from the OME group, at concentrations 1.86 to 12.5 times higher than that of serum. Pepsinogen messenger ribonucleic acid was not demonstrated in any of the adenoid tissues of the OME group.

CONCLUSION

LPR plays an important role in the pathogenesis of OME as gastric reflux reaches the middle ear through the nasopharynx and eustachian tube to cause OME.

Effect of cochlear implantation on nasality in children

Hypernasality is a commonly perceived characteristic of speech in deaf adults and children, but the mechanism of this abnormal nasal resonance is poorly understood. The impact of cochlear implantation on nasalance measures in children with severe auditory deprivation has not been previously reported. We conducted a study of nasality in 6 deaf children who had undergone cochlear implantation. Voice recordings were obtained before surgery and 6 months after activation of the implants. The MacKay-Kummer SNAP Test--which consists of a syllable-repetition subtest and a picture-cued subtest--was used to obtain nasalance scores for oral (bilabial, alveolar, velar, and sibilant) and nasal phonemes. Before cochlear implantation, mean nasalance scores were significantly higher than normal during the production of oral phonemes for both subtests (p < or = 0.05). Six months after activation, the nasalance measures for all components of the syllable-repetition subtest had been restored to within 1 standard deviation of normal. For all oral phonemes of the picture-cued subtest, the elevated nasalance scores were consistently lower after cochlear implant activation, although the difference was statistically significant only for velar tasks. Nasalance scores for nasal phonemes were within 1 standard deviation of normal both before and after implant activation. Our study showed that cochlear implantation partially corrects elevated nasalance measures. Disturbances in nasal resonance may be caused in part by the inability of deaf speakers to monitor velopharyngeal valving with auditory feedback. The trend toward improved nasalance scores after implantation highlights the role of auditory feedback in monitoring velopharyngeal function. Visual biofeedback may be required to further normalize hypernasal speech in profoundly deaf children.