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Alternative Therapies for Ankyloglossia-Associated Breastfeeding Challenges: A Systematic Review. Breastfeed Med 2024. [PMID: 38592282 DOI: 10.1089/bfm.2024.0072] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 04/10/2024]
Abstract
Background: Ankyloglossia (AG) diagnoses are increasingly common, and management is not standardized. Nonsurgical alternative therapies are frequently recommended in conjunction with or instead of frenotomy, with uncertain evidence. Objective: To evaluate the efficacy of nonsurgical alternative therapies (chiropractic care, myofunctional therapy, and osteopathy) in improving breastfeeding for infants diagnosed with AG. Methods: PubMed, Embase, CINAHL, Scopus, Web of Science, Clinicaltrials.gov, and Google Scholar were searched (September-October 2023). Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines were followed. A librarian-designed search included the terms "Ankyloglossia," "Non-surgical," "myofunctional therapy," "chiropractic," "osteopathy," and related therapies, with no date restrictions. English language studies of infants <24 months with AG and alternative therapy were included. Risk-of-bias evaluation used Newcastle-Ottawa Scale (NOS). Results: Of 1,304 identified articles, four studies (2016-2022) met inclusion criteria (two cross-sectional, one case report, and one case series). All studies reported frenotomy in combination with alternative therapy yielded favorable outcomes for maternal pain, weight gain, feeding duration, and maintenance of latch. The risk of bias was moderate for two studies, low for the case series, and not calculated for the case report, which has an inherent high risk of bias. All studies lacked control or comparator groups preventing definitive conclusions about the role of alternative therapies in AG. Conclusion: Although some studies suggest the potential benefits of combining alternative therapies with surgery for AG-related breastfeeding issues, the lack of control groups renders the evidence inconclusive. Nonsurgical approaches alone currently lack sufficient evidence. As these alternative therapies gain popularity, rigorous research is crucial to determine their cost-effectiveness and role in managing AG.
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The Intersection of Family Planning and Perception of Career Advancement in General Surgery. J Surg Res 2024; 296:481-488. [PMID: 38325010 DOI: 10.1016/j.jss.2024.01.017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2023] [Revised: 01/02/2024] [Accepted: 01/06/2024] [Indexed: 02/09/2024]
Abstract
INTRODUCTION Women in surgery face unique challenges, particularly as it relates to family planning, parental leave, infant feeding, and career advancement. This study highlights disparities in present day general surgery training to tackle longstanding gender inequities. METHODS An open, anonymous online survey was distributed to Canadian residents, fellows, and practicing general surgeons through the Canadian Association of General Surgeons e-mail list from November 2021-March 2022. Data were analyzed descriptively and chi-square tests were performed to examine categorical outcomes across gender. RESULTS A total of 89 general surgery respondents (13.8% response rate) completed the survey (22 cisgender men; 65 cisgender women). Twenty six percent of participants had accessed fertility services or used assistive reproductive technologies. Of the participants with children, 36.4% of men and 100.0% of women took at least one parental leave during residency or clinical practice. A greater proportion of women compared to men agreed that their training/practice influenced their decision to have children (P = 0.002) and when to have children (P < 0.001). Similarly, a greater proportion of women indicated they had concerns about future family planning (P = 0.008), future fertility (P = 0.002), and future parental leave (P = 0.026). Fifty nine percent of women and zero men agreed that taking parental leave impacted their career advancement (P = 0.04). CONCLUSIONS Women surgeons and surgical trainees continue to face challenges with respect to family planning, parental leave, infant feeding, and career advancement. Further research is needed to explore the experiences of women surgeons. By providing surgeons with the support required to achieve their family planning goals, surgeons can accomplish their family and career goals with less conflict.
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Evaluating implicit gender bias at Canadian otolaryngology meetings through use of professional title. World J Otorhinolaryngol Head Neck Surg 2024; 10:12-17. [PMID: 38560037 PMCID: PMC10979043 DOI: 10.1002/wjo2.96] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2022] [Revised: 02/01/2023] [Accepted: 02/23/2023] [Indexed: 03/30/2023] Open
Abstract
Objectives Increasing numbers of women enter medical school annually. The number of female physicians in leadership positions has been much slower to equalize. There are also well-documented differences in the treatment of women as compared to men in professional settings. Female presenters are less likely to be introduced by their professional title ("Doctor") for grand rounds and conferences, especially with a man performing the introduction. This study reviewed the Canadian Society of Otolaryngology-Head and Neck Surgery (CSOHNS) meetings from 2017 to 2020 to determine the proportion of presenters introduced by their professional title and whether this varied by gender. Methods Recordings from CSOHNS meetings were reviewed and coded for introducer and presenter demographics, including leadership positions and gender. Chi-squared tests of proportion and multivariate logistic regression was used to compare genders and identify factors associated with professional versus unprofessional forms of address. Results No significant association was found between professional title use and introducer or presenter gender. Female presenters were introduced with professional title 69.6% of the time, while male presenters were introduced with professional title 67.6% of the time (P = 0.69). Residents were introduced with a professional title with the most frequency (75.8%), while attending staff were introduced with a professional title with the least frequency (63.0%) (P = 0.02). Conclusions The lack of gender bias in speaker introductions at recent CSOHNS meetings demonstrates progress in achieving gender equity in medicine. Research efforts should continue to define additional forms of unconscious bias that may be contributing to gender inequity in leadership positions.
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Use of At-Breast Supplementers to Facilitate Feeding Solely at the Breast for Infants with Retrognathia: Two Case Studies. Breastfeed Med 2024; 19:228-231. [PMID: 38377616 DOI: 10.1089/bfm.2023.0268] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/22/2024]
Abstract
Objective: Infants with significant retrognathia often have difficulty forming a latch adequate to establish exclusive breastfeeding. This article describes the use of at-breast supplementers (ABSs) to facilitate extended breastfeeding relationships, even when supplementation is necessary for growth. Methods: Two cases are described where infants with severe retrognathia initially struggled with weight gain necessitating supplementation but were able to ultimately exclusively feed at-breast with the use of ABSs. Results: While the two cases differed in the form of supplemental milk used and duration of ABS use, both dyads breastfed for beyond 2 years. Conclusions: Feeding solely at the breast and subsequent extended breastfeeding may be possible even for infants who require supplementation, including those with anatomical or functional challenges such as retrognathia. The ABS is a relatively simple system that may be beneficial for difficulties such as poor latch and low milk supply. More awareness and education is needed so that clinicians consider supporting dyads with this approach.
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Pediatric obstructive sleep apnea. CMAJ 2024; 196:E241. [PMID: 38408779 PMCID: PMC10896596 DOI: 10.1503/cmaj.230897] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/28/2024] Open
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Ankyloglossie (frein lingual anormalement court) chez le nourrisson. CMAJ 2024; 196:E170-E171. [PMID: 38346778 PMCID: PMC10861261 DOI: 10.1503/cmaj.230151-f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/15/2024] Open
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Feeding outcomes in tracheostomy-dependent infants - can we predict future gastrostomy tube use? Int J Pediatr Otorhinolaryngol 2024; 177:111877. [PMID: 38295685 DOI: 10.1016/j.ijporl.2024.111877] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/27/2023] [Revised: 01/15/2024] [Accepted: 01/28/2024] [Indexed: 02/12/2024]
Abstract
OBJECTIVES To identify characteristics of infants with tracheostomy that require gastrostomy tube insertion versus those likely to orally feed to predict which patients may benefit from insertion of gastrostomy at the time of tracheostomy placement. METHODS Retrospective review of infants undergoing tracheostomy from birth to 18 months of age. The primary outcome was to identify pre-operative factors predictive of future gastrostomy tube use. Univariate and multivariate analyses evaluated association between pre-operative patient characteristics and feeding outcomes. RESULTS Of 103 patients identified, 73 met inclusion criteria. Upper airway anomaly was the indication for tracheostomy in 70.4 %. Gastrostomy tube was required in 52 patients (75.4 %), with 7 (13.5 %) placed concurrently with tracheostomy. Infants with birth complications, a neurologic diagnosis, multiple co-morbidities, or identified with aspiration risk were more likely to require a gastrostomy tube (p < 0.05). CONCLUSIONS Most infants who require tracheostomy placement from birth until 18 months of age will require nutritional support. Tracheostomy and gastrostomy are uncommonly placed concurrently. Coordination of placement would theoretically minimize the risk of general anesthetic exposure while potentially reducing hospital length of stay and healthcare related costs.
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Knowledge and attitudes surrounding breastfeeding in pediatric otolaryngology: A survey study. Int J Pediatr Otorhinolaryngol 2024; 176:111774. [PMID: 37979254 DOI: 10.1016/j.ijporl.2023.111774] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/30/2023] [Revised: 10/26/2023] [Accepted: 11/01/2023] [Indexed: 11/20/2023]
Abstract
OBJECTIVE This survey study seeks to understand the knowledge and attitudes of pediatric otolaryngologists around breastfeeding to potentially inform future educational efforts. METHODS This cross-sectional survey recruited 59 pediatric otolaryngologists from an international WhatsApp group comprising 213 members over a four-week period. Demographics, knowledge, attitudes, and experiences with breastfeeding were investigated using Likert scales. Descriptive statistics and correlational analyses were conducted. Statistical significance was set at p < 0.05. RESULTS The majority of participants were women (59%) and had children (86%). Most participants and/or their partners breastfed for 4-12 months (67%). Previous breastfeeding education was limited in both medical school (20%) and residency (15%). Most agreed that otolaryngologists should be knowledgeable about breastfeeding (83%), however men respondents felt significantly less comfortable counselling (p < 0.003), addressing difficulties (p < 0.044), and suggesting means to change milk supply (p < 0.007). Knowledge gaps were identified with assessing aspiration risk and airway anomalies. Breastfeeding experience did not significantly influence attitudes and comfort around breastfeeding, or the knowledge of participants. CONCLUSION While attitudes towards breastfeeding amongst pediatric otolaryngologists are very positive, degrees of comfort and knowledge are more limited, especially amongst men otolaryngologists. Future research should consider exploring the efficacy of educational efforts in Otolaryngology for improving the support offered to breastfeeding dyads.
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Gender Differences in North American and International Otolaryngology Clinical Practice Guideline Authorship: A 17-Year Analysis. Ann Otol Rhinol Laryngol 2023; 132:1669-1678. [PMID: 37334913 PMCID: PMC10571373 DOI: 10.1177/00034894231181752] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/21/2023]
Abstract
OBJECTIVE To analyze gender differences in authorship of North American (Canadian and American) and international published otolaryngology-head and neck surgery (OHNS) clinical practice guidelines (CPG) over a 17-year period. METHODS Clinical practice guidelines published between 2005 and 2022 were identified through the Canadian Agency for Drugs and Technology in Health (CADTH) search strategy in MEDLINE and EMBASE. Studies were included if they were original studies, published in the English language, and encompassed Canadian, American, or international OHNS clinical practice guidelines. RESULTS A total of 145 guidelines were identified, encompassing 661 female authors (27.4%) and 1756 male authors (72.7%). Among OHNS authors, women and men accounted for 21.2% and 78.8% of authors, respectively. Women who were involved in guideline authorship were 31.0% less likely to be an otolaryngologist compared to men. There were no gender differences across first or senior author and by subspeciality. Female otolaryngologist representation was the greatest in rhinology (28.3%) and pediatrics (26.7%). American guidelines had the greatest proportion of female authors per guideline (34.1%) and the greatest number of unique female authors (33.2%). CONCLUSION Despite the increasing representation of women in OHNS, gender gaps exist with regards to authorship within clinical practice guidelines. Greater gender diversity and transparency is required within guideline authorship to help achieve equitable gender representation and the development of balanced guidelines with a variety of viewpoints.
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Ankyloglossia (tongue tie) in infants. CMAJ 2023; 195:E1349. [PMID: 37816524 PMCID: PMC10610957 DOI: 10.1503/cmaj.230151] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/12/2023] Open
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Supporting Breastfeeding in Complex Pediatric Otolaryngology Dyads: Clinical Pathway With Illustrative Case Series. Ann Otol Rhinol Laryngol 2023; 132:1194-1199. [PMID: 36503275 PMCID: PMC10466998 DOI: 10.1177/00034894221140771] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/23/2023]
Abstract
OBJECTIVES The benefits of breastfeeding are well established, yet complex infants are less frequently supported to feed direct or pumped breastmilk. This article aims to provide an algorithm to support complex infants in meeting breastfeeding goals. METHODS Two cases are presented to illustrate the breastfeeding support pathway. Each involves early identification of motivated caregivers, consultation of allied health, and assessment of swallowing safety with modification of position or route as appropriate. RESULTS Two infants presented herein successfully continued to receive breastmilk despite airway complexity-1 with oral aversion secondary to prolonged nil per os period in the setting of tracheoesophageal fistula, and 1 with a tracheostomy secondary to subglottic stenosis. CONCLUSIONS It is both possible and imperative to support complex infants in continuing to breastfeed, either directly or via the safest possible route, for the benefits to both members of the dyad.
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Otolaryngology and the Pregnant Patient. JAMA Otolaryngol Head Neck Surg 2023; 149:930-937. [PMID: 37615978 DOI: 10.1001/jamaoto.2023.2558] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/25/2023]
Abstract
Importance Pregnancy may result in physiologic and pathologic changes in the head and neck. Otolaryngologists may need to intervene medically or surgically with pregnant patients. Careful consideration of risks to both the gravid patient and the developing fetus is vital. Observations Patients may present with otolaryngologic complaints exacerbated by or simply occurring during their pregnancy. Symptoms of hearing loss, vertigo, rhinitis or rhinosinusitis, epistaxis, obstructive sleep apnea, sialorrhea, voice changes, reflux, subglottic stenosis, and benign and malignant tumors of the head and neck may prompt evaluation. While conservative measures are often best, there are medications that are safe for use during pregnancy. When required, surgery for the gravid patient requires a multidisciplinary approach. Conclusions and Relevance Otolaryngologic manifestations in pregnant patients may be managed safely with conservative treatment, medication, and surgery when necessary. Treatment should include consideration of both the pregnant patient and the developing fetus.
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Authorship diversity in otolaryngology: a 9-year analysis of articles published in Journal of Otolaryngology-Head and Neck Surgery. J Otolaryngol Head Neck Surg 2023; 52:57. [PMID: 37674238 PMCID: PMC10481594 DOI: 10.1186/s40463-023-00667-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2023] [Accepted: 08/31/2023] [Indexed: 09/08/2023] Open
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Offrir du soutien à l’allaitement et à la lactation pour la patientèle en chirurgie. CMAJ 2023; 195:E1136-E1137. [PMID: 37640403 PMCID: PMC10462410 DOI: 10.1503/cmaj.230366-f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/31/2023] Open
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Understanding Gender Differences in Research Productivity of Canadian Otolaryngologists-A Comprehensive National Audit. EAR, NOSE & THROAT JOURNAL 2023:1455613231190272. [PMID: 37534754 DOI: 10.1177/01455613231190272] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/04/2023] Open
Abstract
Objective: To understand the factors contributing to gender disparities in the research productivity of Canadian academic otolaryngologist-head and neck surgeons. Methods: Publicly available sources including departmental websites, SCOPUS, and the Royal College of Physicians and Surgeons of Canada were accessed between February and April 2022 to analyze gender differences in the academic productivity of otolaryngologist-head and neck surgeons across Canada. Gender differences in research productivity metrics, including h-index, i10-index, publication number, and number of first and senior authorships were assessed. Demographic data, including gender, institution, years in practice, and leadership roles were assessed for correlation with increased research productivity. Subgroup analyses were used to evaluate gender differences in productivity metrics, and univariable and multivariable regression analyses were used to evaluate predictors of research productivity. Results: Data were collected for 316 academic otolaryngologists (252 men, 64 women, P < .001). Men had significantly more years of publishing [mean (standard deviation, SD), 15.64 (9.45) vs 12.44 (8.28), P = .014], higher h-indices [12.22 (11.47) vs 7.33 (5.36), P < .001], i10-indices [22.61 (37.88) vs 8.17 (9.14), P > .001], publication numbers [46.63 (65.18) vs 19.59 (23.40), P < .001], and first [8.18 (9.95) vs 4.89 (6.18), P = .001] and senior authorships [12.98 (22.72) vs 3.83 (6.89), P < .001]. Gender differences were most pronounced in head and neck oncology, pediatrics, and the late career stage. Gender disparities in productivity were absent in the early career stage. Multivariate analysis identified only the number publications and number of senior author publications as being significantly influenced by gender. Conclusion: Canadian female otolaryngologist-head and neck surgeons appear to have equivalent research productivity to their male counterparts in the early career stage. This mirrors the recent findings in the United States, and demonstrates progress compared to earlier studies that found women to have lower research productivity in the early career stage.
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Changes in operative otolaryngology infections related to the COVID19 pandemic: A retrospective cohort study. Int J Pediatr Otorhinolaryngol 2023; 171:111650. [PMID: 37437498 DOI: 10.1016/j.ijporl.2023.111650] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/06/2023] [Revised: 06/22/2023] [Accepted: 07/07/2023] [Indexed: 07/14/2023]
Abstract
BACKGROUND Pediatric emergency admissions fell significantly during the COVID-19 pandemic. This study investigated the changes in severe infectious complications managed by otolaryngology between the pre-pandemic period and the first year of the pandemic to determine if COVID-19 or related public health measures influenced the rate or severity of presentations managed in otolaryngology. METHODS A retrospective chart review was conducted on pediatric patients who presented with severe infectious otolaryngology presentations (acute mastoiditis, deep neck space abscesses, and orbital complications of sinusitis) over the pre-pandemic (March 2018-February 2020) and early pandemic (March 2020-February 2021) periods. Patient characteristics, details of presentation, treatment, and outcomes were extracted from patients' charts. Independent samples t-tests/Mann-Whitney U-tests for continuous variables and Pearson chi-squared tests/Fisher's exact test for categorical variables were conducted to compare the pre vs early pandemic groups. RESULTS There were 93 pre-pandemic and 28 early pandemic presentations. The monthly case average was significantly lower during the early pandemic period than the 2 years prior [3.58 (2.80) vs 2.00 (2.00), P = .045]. The average monthly frequency of presentations for deep neck space abscess and mastoiditis were significantly higher in the pre-pandemic group when compared to the early pandemic group [1.96 (±0.33) vs 1.33 (±0.48), P = .049; .71 (±0.26) vs 0.17 (±0.41), P = .01, respectively]. The early pandemic group was significantly younger (3.81 vs 6.04 years, P = .005), however there were no differences in gender, length of admission, and days from symptom onset to presentation between the two groups (P > .05). The early pandemic group had significantly elevated inflammatory markers on presentation [CRP, WBC, neutrophils (P = .02, P = .02, P = .04, respectively)] compared to the pre-pandemic group. CONCLUSION The COVID-19 pandemic has had an effect on severe infectious complications of ENT pathologies, including decreased average monthly cases during the early pandemic, younger age at presentation, and elevated inflammatory markers.
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Supporting breastfeeding and lactation in surgical patients. CMAJ 2023; 195:E879. [PMID: 37364913 DOI: 10.1503/cmaj.230366] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/28/2023] Open
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Exploring Diversity in Otolaryngology-Head and Neck Surgery Journal Editorial Boards. EAR, NOSE & THROAT JOURNAL 2023:1455613231178115. [PMID: 37264931 DOI: 10.1177/01455613231178115] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/03/2023] Open
Abstract
OBJECTIVE Despite increasing diversity in medical school entrants, disparities exist in academic leadership. This study sought to examine the proportion of women and visible minorities (VMs) among editorial board members (EBMs) of otolaryngology journals. METHODS Two reviewers collected journal, editorial board, and editor-in-chief characteristics using journal mastheads or official websites. Gender and VM representation on editorial boards and factors associated with increased representation were investigated. RESULTS Forty-one journals were explored, from January to April 2022. Of 2128 EBMs, 663 (31.3%) were VMs and 551 (25.9%) were women. Editor-in-chief roles were held by 12 (25%) VM individuals and 3 (6.2%) women. Gender differences in the distribution of editorial board positions were found (P < .001); women had higher representation as associate editors (24.5%, n = 551 vs 15.4, n = 1577%) and deputy/managing editors (2.2%, n = 551 vs 0.4%, n = 1577), while men were more represented as editor-in-chief (2.9%, n = 1577 vs 0.5%, n = 551). Similar VM representation existed between genders (31.0% male; 31.6% women) (P = .80). Journal impact factor quartile and gender were significantly correlated (P < .001); a higher proportion of women were represented in the first (27.0% vs 24.5%) and fourth (12.0% vs 4.9%) quartile. No significant factors were identified for higher women's editorial board representation. Larger editorial board size (P = .002) and Asian/South American journals (P = .003 to P < .001) had significantly higher representation of VMs. CONCLUSION Women and VMs are underrepresented in high-ranking editorial positions. Diversity in editorial boards is needed to ensure fair and balanced journal reviews and equity within otolaryngology.
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Canadian women in otolaryngology: head and neck surgery part 2-challenges in family planning, fertility, and lactation. J Otolaryngol Head Neck Surg 2023; 52:39. [PMID: 37221615 DOI: 10.1186/s40463-023-00630-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2022] [Accepted: 02/23/2023] [Indexed: 05/25/2023] Open
Abstract
BACKGROUND Previous literature demonstrates that female surgeons face difficulties in family planning, meeting breastfeeding goals, leadership and advancement opportunities. These issues have received limited attention in Canadian surgeons despite different maternity leave patterns compared to the general Canadian population. We sought to describe the experience of otolaryngologist-head and neck surgeons in family planning, fertility, and lactation and to identify the role of gender and career stage in these experiences. METHODS A RedCAP® survey was disseminated to Canadian otolaryngology-head and neck surgeons and residents from March to May of 2021 through social media and the national listserv. This survey examined fertility, pregnancy losses, and infant feeding. Major independent variables include gender and career stage (faculty and resident). Dependent variables include respondent experiences with fertility, number of children, and length of parental leave. Responses were tabulated and presented descriptively to communicate the experience of Canadian otolaryngologists. Further, statistical comparisons such as chi-square and t-tests were employed to identify relationships between these variables. Thematic analysis was conducted for narrative comments. RESULTS We received 183 completed surveys (22% response rate). 54% of females versus 13% of males agreed that career influenced their ability to have children (p = 0.002). 74% of female respondents without children have concerns about future fertility compared to 4% of men (p < 0.001). Furthermore, 80% of women versus 20% of men have concerns about future family planning (p < 0.001). The average maternity leave was 11.5 weeks for residents, and 22.2 weeks for staff. Additionally, significantly more women than men stated that maternity leave impacted advancement opportunities (32% vs. 7%) and salary/remuneration (71% vs. 24%) (p < 0.001). Over 60% of those choosing to pump breastmilk at work reported having inadequate time, space, and breastmilk storage. In total, 62% of breastfed infants were receiving breastmilk at 1 year. CONCLUSION Canadian female otolaryngologists-head and neck surgeons face challenges in family planning, ability to conceive, and breastfeeding. Focused effort is required to provide an inclusive environment that helps all otolaryngologists-head and neck surgeons achieve both their career and family goals, regardless of gender or career stage.
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Gender representation in leadership & research: a 13-year review of the Annual Canadian Society of Otolaryngology Meetings. J Otolaryngol Head Neck Surg 2023; 52:38. [PMID: 37170245 PMCID: PMC10173511 DOI: 10.1186/s40463-023-00635-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2022] [Accepted: 03/01/2023] [Indexed: 05/13/2023] Open
Abstract
BACKGROUND The gender disparity in surgical disciplines, specifically in speakers across North American medical and surgical specialty conferences, has been highlighted in recent literature. Improving gender diversity at society meetings and panels may provide many benefits. Our aim was to determine the state of gender diversity amongst presenters and speakers at the annual Canadian Society of Otolaryngology-Head and Neck Surgery (CSO) meetings. METHODS Scientific programs for the CSO annual meetings from 2008 to 2020 were obtained from the national society website. Participant name, role, gender, location, and subspecialty topic were recorded for all roles other than poster presenter. Gender (male or female) was determined using an online search. The total number of opportunity spots and proportion of women was then calculated. Gender differences were analyzed using chi-square test and logistic regression with odds ratios. Four categories were analyzed: Society Leadership, Invited Speaker Opportunities, Workshop Composition (male-only panels or "manels", female-only panels, or with at least one female speaker), and Oral Paper Presenters (first authors). RESULTS There were 1874 leadership opportunity spots from 2008 to 2020, of which 18.6% were filled by women. Among elected leadership positions in the society, only 92 unique women filled 738 leadership opportunity spots. 13.2% of workshop chairs, 20.8% of panelists and 22.7% of paper session chairs were female. There was an overall increase in the proportion of leadership positions held by women, from 13.9% of leadership spots in 2008 to 30.1% in 2020. Of the 368 workshops, 61.1% were led by men only, 36.4% by at least 1 female surgeon, and 2.5% by women only. "Manels" have comprised at least 37.5% of workshops each year. CONCLUSIONS The proportion of women in speaking roles at the annual CSO meetings has generally increased over time, particularly among panelists, leading to fewer male-only speaking panels. However, there has been a slower rate of growth in the proportion of unique women in speaker roles. There remains an opportunity to increase gender/sex diversity at the major Canadian otolaryngology meeting.
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Canadian Women in Otolaryngology-Head and Neck Surgery part 1: the relationship of gender identity to career trajectory and experiences of harassment. J Otolaryngol Head Neck Surg 2023; 52:31. [PMID: 37095567 PMCID: PMC10127062 DOI: 10.1186/s40463-023-00629-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2022] [Accepted: 02/23/2023] [Indexed: 04/26/2023] Open
Abstract
INTRODUCTION Women in surgical specialties face different challenges than their male peers. However, there is a paucity of literature exploring these challenges and their effects on a Canadian surgeon's career. METHODS A REDCap® survey was distributed to Canadian Otolaryngology-Head and Neck Surgery (OHNS) staff and residents in March 2021 using the national society listserv and social media. Questions examined practice patterns, leadership positions, advancement, and experiences of harassment. Gender differences in survey responses were explored. RESULTS 183 completed surveys were obtained, representing 21.8% of the Canadian society membership [838 members with 205 (24.4%) women]. 83 respondents self-identified as female (40% response rate) and 100 as male (16% response rate). Female respondents reported significantly fewer residency peers and colleagues identifying as their gender (p < .001). Female respondents were significantly less likely to agree with the statement "My department had the same expectations of residents regardless of gender" (p < .001). Similar results were observed in questions about fair evaluation, equal treatment, and leadership opportunities (all p < .001). Male respondents held the majority of department chair (p = .028), site chief (p = .011), and division chief positions (p = .005). Women reported experiencing significantly more verbal sexual harassment during residency (p < .001), and more verbal non-sexual harassment as staff (p = .03) than their male colleagues. In both female residents and staff, this was more likely to originate from patients or family members (p < .03). DISCUSSION There is a gender difference in the experience and treatment of OHNS residents and staff. By shedding light on this topic, as a specialty we can and must move towards greater diversity and equality.
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In Response to Documentation in Pediatric Microlaryngoscopy/Bronchoscopy. Laryngoscope 2023; 133:E27-E28. [PMID: 36458665 DOI: 10.1002/lary.30502] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2022] [Accepted: 11/16/2022] [Indexed: 12/05/2022]
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Trends in otolaryngology publications: a 9-year bibliometric analysis of articles published in Journal of Otolaryngology-Head and Neck Surgery. J Otolaryngol Head Neck Surg 2023; 52:17. [PMID: 36797784 PMCID: PMC9933021 DOI: 10.1186/s40463-022-00619-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2022] [Accepted: 12/23/2022] [Indexed: 02/18/2023] Open
Abstract
BACKGROUND The advancement of Otolaryngology-Head and Neck Surgery (OHNS) as a specialty relies on excellence in research. The Journal of Otolaryngology-Head and Neck Surgery is an open access, peer-reviewed journal publishing on all aspects and subspecialities of OHNS. It is the official journal of the Canadian Society of Otolaryngology-Head and Neck Surgery. This study aims to analyze bibliometric trends in authorships and institutional contributions within the Journal of Otolaryngology-Head and Neck Surgery over a 9-year period. METHODS All research articles published online in the journal were analyzed from 2013 to the end of 2021. The professional designation of all authors was recorded along with the article type, article category, institutional affiliations and international collaborations. Cochran-Armitage trend tests were used to assess the change in proportion over time between years and groups. RESULTS Of the 603 articles, 20 were excluded as they represented correspondence or corrections, or author identity could not be determined. 583 articles with 3409 total authors were included. Number of first authors with a Doctor of Medicine (MD) degree decreased from 90.2 to 85.3% (P = 0.165). Sub-group analysis of non-MD first authors demonstrated a significant increase in medical students as first authors from 1.6 to 11.8% (P = 0.008). Senior author degree demonstrated a significant increase in MD degree from 96.7 to 98.5% (P = 0.002). Analysis of article categories demonstrated a significant decrease in education and head and neck surgery related articles from 8.2 to 2.9% (P = 0.032) and 44.3 to 29.4% (P = 0.028) respectively. Pediatric otolaryngology articles increased significantly from 0 to 5.9% (P < 0.0001). Systematic and scoping reviews significantly increased, from 3.3 to 10.3% (P = 0.015) and original research significantly decreased from 83.6 to 82.4% (P < 0.0001). There was a significant decrease in Canadian/international collaborations from 14.3 to 4.7% (P = 0.037). There was a significant increase in international first and senior authors, from 23.0 to 36.8% (P = 0.008) and 19.7 to 38.2% (P = 0.002) respectively. CONCLUSION The landscape of the journal is evolving with increased representation of non-MDs and international authors along with content that reflects higher level of scientific evidence. Future studies should characterize trends in other Otolaryngology journals to understand the research trajectory within the field.
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Gender differences in publication rates at Canadian Society of Otolaryngology-Head and Neck Surgery annual meetings: an 11-year analysis. J Otolaryngol Head Neck Surg 2023; 52:10. [PMID: 36759903 PMCID: PMC9909880 DOI: 10.1186/s40463-022-00612-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2022] [Accepted: 12/06/2022] [Indexed: 02/11/2023] Open
Abstract
BACKGROUND Evaluating gender differences in publication rates after conference presentations is an avenue to assess women's contributions to academic medicine. The objective of this study was to assess gender differences in publication rates, time to publication, and subspeciality of publication of abstracts presented at Canadian otolaryngology conferences over an 11-year period. METHODS Cross-sectional data was obtained from online conference schedules of annual Canadian Society of Otolaryngology-Head and Neck Surgery national meetings between 2009 and 2020. A total of 2111 abstract titles were searched in MedLine via PubMed. Gender of the first and senior author, publication status of presented work, and subspeciality of publication were extracted. RESULTS Of 2111 scientific abstracts presented between 2009 and 2020, female first and senior authors accounted for 29.0% and 12.8% of published abstracts, respectively. There was a significant difference in the publication rate of senior authors by gender (p < 0.01). Male senior authors had a 9.70% higher rate of publication compared to female senior authors. Posters with a female first author were 33.0% (OR: 0.67; 95% CI 0.49-0.91) less likely to be published compared to posters with a male first author. Similarly, posters with a female senior author were 34.0% (OR: 0.66; 95% CI 0.45-0.96) less likely to be published. There was a significant difference in discipline of publication by gender of the senior author (p < 0.001). Male senior authors were more likely to supervise projects in otology while female senior authors were more likely to supervise projects in education and pediatrics. The time to publication and impact factor of the journal of publication did not differ by gender. CONCLUSION Gender disparities exist in the publication rates of first and senior authors at Canadian otolaryngology meetings. Female senior authors have significantly lower publication rates compared to their male colleagues and differences exist in publication rates after poster presentations. Investigation of gender gaps in academic medicine, research productivity, and publications is essential for development of a diverse, equitable, and inclusive workforce in otolaryngology.
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Establishing the Ideal Conditions to Create an Airway Fire Using a Porcine Airway Model. OTO Open 2023; 7:e36. [PMID: 36998561 PMCID: PMC10046716 DOI: 10.1002/oto2.36] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2023] [Accepted: 01/28/2023] [Indexed: 02/25/2023] Open
Abstract
Objective Airway fires are a rare but devastating complication of airway surgery. Although protocols for managing airway fires have been discussed, the ideal conditions for igniting airway fires remain unclear. This study examined the oxygen level required to ignite a fire during a tracheostomy. Study Design Porcine Model. Setting Laboratory. Methods Porcine tracheas were intubated with a 7.5 air-filled polyvinyl endotracheal tube. A tracheostomy was performed. Monopolar and bipolar cautery were used in independent experiments to assess the ignition capacity. Seven trials were performed for each fraction of inspired oxygen (FiO2): 1.0, 0.9, 0.7, 0.6, 0.5, 0.4, and 0.3. The primary outcome was ignition of a fire. The time was started once the cautery function was turned on. The time was stopped when a flame was produced. Thirty seconds was used as the cut-off for "no fire." Results The average time to ignition for monopolar cautery at FiO2 of 1.0, 0.9, 0.8, 0.7, and 0.6 was found to be 9.9, 6.6, 6.9, 9.6, and 8.4 s, respectively. FiO2 ≤ 0.5 did not produce a flame. No flame was created using the bipolar device. Dry tissue eschar shortened the time to ignition, whereas moisture in the tissue prolonged the time to ignition. However, these differences were not quantified. Conclusion Dry tissue eschar, monopolar cautery, and FiO2 ≥ 0.6 are more likely to result in airway fires.
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The rare yet benign paediatric neck mass. J Paediatr Child Health 2023; 59:169-171. [PMID: 36098622 DOI: 10.1111/jpc.16209] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/10/2022] [Accepted: 08/27/2022] [Indexed: 01/14/2023]
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Supporting Lactation in Otolaryngology Patients Through Medication Optimization, Radiology Considerations, and More: A Literature Review. JAMA Otolaryngol Head Neck Surg 2022; 148:973-980. [PMID: 35951313 DOI: 10.1001/jamaoto.2022.2286] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
Abstract
Importance The benefits of breastfeeding are well established, with the American Academy of Pediatrics and Canadian guidelines recommending exclusive breastfeeding for the first 6 months of life. However, maternal hospitalization, illness, medication use, and poor support can result in early termination of breastfeeding. Caring for breastfeeding patients in otolaryngology is a challenge because of the lack of literature regarding otolaryngology-specific medication safety, patient concerns, and inadequate education among otolaryngologists. This review highlights recent literature regarding lactation in otolaryngology patients, including medication, radiologic imaging, perioperative considerations, and subspecialty-specific considerations for lactating patients. Observations The majority of common medications used in general otolaryngology are safe for breastfeeding patients, including antihistamines, mucolytics, antitussives, antifungals, and decongestants. Certain analgesics and anti-inflammatories, such as tramadol, are not preferred in breastfeeding individuals. Some subspeciality-specific medications such as biologics (dupilumab) and methotrexate should be avoided. Lactating patients require special perioperative attention to ensure that optimal patient care is provided, such as managing supply, considering length of surgery, managing postoperative pain, and determining the safe amount of time until an infant can be fed. Conclusions and Relevance Most medications can be safely used with lactating patients. If physicians are unsure about a medication's safety, they should consult appropriate resources prior to recommending breastfeeding cessation or to discard pumped milk.
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Documentation in Pediatric Microlaryngoscopy/Bronchoscopy: International Modified Delphi Consensus. Laryngoscope 2022; 133:1234-1238. [PMID: 35841387 DOI: 10.1002/lary.30286] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2022] [Revised: 05/19/2022] [Accepted: 06/17/2022] [Indexed: 11/06/2022]
Abstract
BACKGROUND Complete and accurate documentation of surgical procedures is essential for optimizing patient care, yet significant variation in operative notes persists within and across institutions. We sought to reach consensus on the most important components of an operative note for pediatric microlaryngoscopy and bronchoscopy. METHODS A modified Delphi consensus process was used. A checklist for operative documentation, created by fellowship-trained pediatric otolaryngologists-head and neck surgeons, was sent to surgeons identified as experts in pediatric laryngoscopy and bronchoscopy. In the first round, items were rated as "keep" or "remove". In the second round, each item was rated on a 7-point Likert scale for importance. The mean score of each item was calculated to determine if consensus was reached. RESULTS Overall, 43/74 (58.1%) surgeons responded to our survey. After two rounds of editing, 28 components reached consensus, 24 were near consensus, and 26 did not reach consensus. Items that reached final consensus had mean (SD) ratings of 6.12 (0.94) (range, 5.31-6.72). CONCLUSION Pediatric otolaryngologists identified as bronchoscopy experts were able to create a checklist of essential components of an operative note for pediatric laryngoscopy and bronchoscopy using a Delphi method. Items reaching consensus included procedure name, description of breathing, grade of airway view, description of normal anatomic structures, grade of subglottic stenosis if present, presence and description of tracheobronchomalacia, presence of fistulae, cleft and rings, and several special cases including foreign body and tracheostomy management, as well as end of procedure disposition and complications. LEVEL OF EVIDENCE 5 Laryngoscope, 2022.
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What Is a Tongue Tie? JAMA Otolaryngol Head Neck Surg 2022; 148:496. [PMID: 35357423 DOI: 10.1001/jamaoto.2022.0181] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
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Choosing Wisely Canada - pediatric otolaryngology recommendations. J Otolaryngol Head Neck Surg 2021; 50:61. [PMID: 34715936 PMCID: PMC8557011 DOI: 10.1186/s40463-021-00533-x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2021] [Accepted: 07/19/2021] [Indexed: 11/10/2022] Open
Abstract
The Choosing Wisely Canada campaign raises awareness amongst physicians and patients regarding unnecessary or inappropriate tests and treatments. Using an online survey, members of the Pediatric Otolaryngology Subspecialty Group within the Canadian Society of Otolaryngology – Head & Neck Surgery developed a list of nine evidence based recommendations to help physicians and patients make treatment decisions regarding common pediatric otolaryngology presentations: (1) Don’t routinely order a plain film x-ray in the evaluation of nasal fractures; (2) Don’t order imaging to distinguish acute bacterial sinusitis from an upper respiratory infection; (3) Don’t place tympanostomy tubes in most children for a single episode of otitis media with effusion of less than 3 months duration; (4) Don’t routinely prescribe intranasal/systemic steroids, antihistamines or decongestants for children with uncomplicated otitis media with effusion; (5) Don’t prescribe oral antibiotics for children with uncomplicated tympanostomy tube otorrhea or uncomplicated acute otitis externa; (6) Don’t prescribe codeine for post-tonsillectomy/adenoidectomy pain relief in children; (7) Don’t administer perioperative antibiotics for elective tonsillectomy in children; (8) Don’t perform tonsillectomy for children with uncomplicated recurrent throat infections if there have been fewer than 7 episodes in the past year, 5 episodes in each of the past 2 years, or 3 episodes in each of the last 3 years; and (9) Don’t perform endoscopic sinus surgery for uncomplicated pediatric chronic rhinosinusitis prior to failure of maximal medical therapy and adenoidectomy.
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Supporting Direct Breastfeeding in a Tracheostomy-Dependent Neonate: A Case Report. Ann Otol Rhinol Laryngol 2021; 131:445-449. [PMID: 34109849 PMCID: PMC8899811 DOI: 10.1177/00034894211024060] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/02/2022]
Abstract
Objectives: There are numerous well-described benefits to breastfeeding to both infant and mother.
Even in healthy children with an uncomplicated perinatal course, there may be
significant struggles maintaining a breastfeeding relationship. Infants with a
complicated clinical course have been shown to benefit even more from the provision of
breastmilk, however they are seldom encouraged to feed directly at the breast. There are
no reports of successful direct breastfeeding in an infant with a tracheostomy. Methods and Results: We present the case of a breastfeeding dyad including a trach-dependent infant with
congenital idiopathic bilateral vocal fold immobility who successfully initiated and
maintained an inclusive breastfeeding relationship. Conclusion: This case illustrates that successful direct breastfeeding can be achieved in an infant
with a tracheostomy. If a patient is felt to be capable of oral feeding via bottle,
there is no reason that there should not be a trial of direct feeding at the breast, for
the benefit of both members of the breastfeeding dyad.
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Abstract
BACKGROUND Infection caused by Actinomyces species is a rare cause of head and neck infection in children. This chronic cervicofacial infection can present with localized swelling, abscess formation, sinus drainage and can be complicated by osteomyelitis. METHODS Presented are 2 pediatric cases of secondary actinomycosis in the context of congenital lesions: 1 patient with a previously excised preauricular sinus and another with a persistent sublingual mass. A comprehensive literature search was conducted for reported cases of pediatric actinomycosis in the cervicofacial region. RESULTS Both cases presented were successfully treated with a combination of complete surgical excision of the lesions and prolonged antibiotic therapy. Thirty-four pediatric cases of cervicofacial actinomycosis are reviewed, 2 presented herein, and 32 from the published literature. There was equal gender distribution and the median age was 7.5 years. The most common site for infection was the submandibular area. Four (12%) of cases arose in pre-existing congenital lesions. Most patients were treated with penicillin-based antibiotics for a median duration of 6 months following surgical excision or debridement. CONCLUSIONS Actinomycosis is a rare infection of the cervicofacial region; secondary infections arising from congenital lesions of the head and neck are even more rare. A previously excised pre-auricular sinus and a sublingual dermoid cyst are not previously reported sites of infection. Actinomycosis should be suspected in chronically draining sinuses of the head and neck region and confirmed through anaerobic culture. Osteomyelitis is a potential complication and magnetic resonance (MR) imaging is warranted. Long-term antibiotic therapy with a penicillin-based antibiotic and surgical excision should be considered.
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Abstract
Ankyloglossia is a failure of the tongue to release from the oral floor with reported consequences that include breastfeeding difficulties and speech impediments. Frenotomy is a commonly performed procedure for the treatment of ankyloglossia. Laser (light amplification by stimulated emission of radiation) is one of several mediums used to perform frenotomies. Although most frenotomies are uncomplicated, there remains a small possibility of complication, such as infection, pain, ductal injury, and hemorrhage, even in expert hands. Because frenotomies are most often performed in infants, postoperative hemorrhage is an important complication to look for as even small amount of bleed may prove fatal, due to low blood volume reserve. We report a case of delayed hemorrhage after laser frenotomy in a 6-week old infant displaying shock symptoms and required fluid resuscitation.
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The Case of the Missing Nose: Congenital Arhinia Case Presentation and Management Recommendations. Ann Otol Rhinol Laryngol 2020; 129:645-648. [PMID: 32100546 DOI: 10.1177/0003489420909415] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
OBJECTIVES To discuss the presentation and management of infants with arhinia or congenital absence of the nose. METHODS This case report describes an infant with arhinia that was diagnosed prenatally. In addition to a discussion of the case, a review of the literature was completed to define appropriate postnatal work-up and management. RESULTS The patient is a term male infant, diagnosed with arhinia on ultrasound and magnetic resonance imaging (MRI) performed at 21-weeks gestational age. Upon birth, the patient was subsequently intubated, followed by tracheostomy due to complete nasal obstruction. Through a genetics evaluation, the patient was found to be heterozygous for the SMCHD1 gene, with hypomethylation at the D4Z4 locus. Plans for reconstruction will be based on future imaging and the development of any nasal patency, however, the patient's family plans to utilize a prosthetic nose until the patient is older. CONCLUSION Arhinia is a rare condition causing respiratory distress in the neonatal period. While stabilization of the airway is the first priority, further management is not clearly defined given the rarity of the malformation. This case discusses stabilization of the airway with a review of treatment and reconstructive options.
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The Nerve to Thyrohyoid Muscle as a Novel Donor Nerve for Laryngeal Reinnervation. Ann Otol Rhinol Laryngol 2019; 129:355-360. [DOI: 10.1177/0003489419888956] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Objectives: Recurrent laryngeal nerve (RLN) injury may be a consequence of surgical procedures of the skull base, neck, and chest, with adverse consequences to function and quality of life. Laryngeal reinnervation offers a potentially stable improvement in vocal fold position and tone. The classic donor nerve is the ansa cervicalis, but is not always available due to damage or sacrifice during previous neck surgeries. Our objective was to introduce the nerve to the thyrohyoid (TH) muscle as an alternate donor nerve for reinnervation, which has not previously been described. Methods: Case series of two patients using the TH nerve for laryngeal reinnervation after RLN injury, with description of surgical harvest. Results: Follow-up results are available for 10 months (one patient) and 3 years (one patient) demonstrating both subjective and objective improvement in function. GRBAS scores were reduced. Maximal phonation time was improved. Patient rating of voice was stable or improved postoperatively. One patient described significant preoperative dyspnea which was significantly improved postoperatively, from a score of 24 to 10 out of 40 on the dyspnea handicap index. VHI was improved in one patient, but scores elevated in the other, despite a change from “moderately severe impairment” to “normal voice” subjectively. Neither patient experienced significant complications from the procedure. Conclusion: Laryngeal reinnervation procedures provide good outcomes in pediatric patients. When ansa cervicalis is not available as a donor nerve, the nerve to TH provides a reasonable alternative.
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Aspiration in the otherwise healthy Infant-Is there a natural course for improvement? Laryngoscope 2019; 130:514-520. [PMID: 30835858 DOI: 10.1002/lary.27888] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/04/2019] [Indexed: 12/25/2022]
Abstract
OBJECTIVES/HYPOTHESIS Timing and indication for surgical intervention is a major challenge in managing pediatric oropharyngeal dysphagia. No study has evaluated a natural course of swallowing dysfunction in otherwise healthy infants. Our objective was to review the outcomes and time to resolution of abnormal swallow in infants with aspiration. STUDY DESIGN Retrospective case series at a tertiary children's hospital. METHODS Fifty patients under 1 year old with aspiration on a modified barium swallow study were included. Patients born <34 weeks, with medical or genetic comorbidities, or who underwent surgical intervention for aspiration were excluded. Patients were followed until aspiration resolved on a swallow study. Kaplan-Meier survival analysis was performed. RESULTS Forty patients (25 patients [50%] by 6 months, 10 [20%] by 1 year, three [6%] by 2 years, and two [4%] at the end of the follow-up interval) were recommended a normal diet, and 10 patients (20%) were still aspirating by the end of the follow-up interval. Median time to resolution was 202 ± 7 days (range, 19-842 days), probability 48% (95% confidence interval [CI]: 0.34-0.62). The probability of resolution at 6 months was 46% (95% CI: 0.4-0.68), at 1 year was 64% (95% CI: 0.51-0.77), at 2 years was 76% (95% CI: 0.64-0.88), and at the end of the follow-up interval 81.3% (95% CI: 0.7-0.92). CONCLUSIONS The majority of infants with aspiration and without any other major comorbidities improved within 1 year. Future research should be directed toward better understanding swallowing dysfunction in neurologically normal infants. LEVEL OF EVIDENCE 4 Laryngoscope, 130:514-520, 2020.
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Infant Midnasal Stenosis: Reliability of Nasal Metrics. AJNR Am J Neuroradiol 2019; 40:562-567. [PMID: 30765383 DOI: 10.3174/ajnr.a5980] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2018] [Accepted: 01/14/2019] [Indexed: 11/07/2022]
Abstract
BACKGROUND AND PURPOSE Midnasal stenosis is a poorly defined entity that may be a component of other conditions of nasal obstruction contributing to respiratory distress in infants. We sought to establish whether midnasal vault narrowing is a component of well-defined syndromes of nasal narrowing, such as bilateral choanal atresia and pyriform aperture stenosis, and to characterize the nasal anatomy of patients with syndromic craniosynostosis. MATERIALS AND METHODS A convenience sample of patients with pyriform aperture stenosis, bilateral choanal atresia, and Apert and Crouzon syndromes with maxillofacial CT scans was identified. Patients with Pierre Robin Sequence were used as controls. Nasal measurements were performed at the pyriform aperture, choana, and defined midnasal points on axial and coronal CT scans. Intra- and interrater reliability was quantified with the intraclass correlation coefficient. T tests with Bonferroni adjustment were used to assess differences from controls. RESULTS The study included 50 patients: Eleven had pyriform aperture stenosis, 10 had Apert and Crouzon syndromes, 9 had choanal atresia, and 20 were controls. Measurements in patients with pyriform aperture stenosis and Apert and Crouzon syndromes were narrower than those of controls at all measured points (P < .001). Measurements in patients with choanal atresia were only narrow in the posterior half of the nose (P < .001). The intra- and interrater reliability of midnasal and pyriform measurements was very good to excellent (intraclass correlation coefficient > 0.87). The choanal measurement was good (intraclass correlation coefficient = 0.76-0.77). CONCLUSIONS Pyriform aperture stenosis, Apert and Crouzon patients were narrower at all measured points compared to controls. Bilateral choanal atresia patients were only narrower in the posterior half of the nose. More research is needed to evaluate the clinical implications of these radiographic findings.
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Conscious Sedation for Pediatric Peritonsillar Abscess: Comparison of Anesthetic Approaches. Otolaryngol Head Neck Surg 2019; 160:706-711. [DOI: 10.1177/0194599818821905] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Objective To compare the efficacy, safety, and cost of incision and drainage (I&D) for pediatric patients with peritonsillar abscesses (PTAs) under conscious sedation (CS) versus unsedated (awake) and general anesthesia (GA). Study Design Case series with chart review. Setting Tertiary pediatric hospital. Subjects and Methods Records for all pediatric patients (<18 years) treated for PTAs in the emergency department from 2005 to 2015 were reviewed and stratified into awake, CS, and GA groups for comparison. The primary outcome measure was procedure tolerance, with secondary measures including return to the emergency department within 15 days, complications, and facility costs associated with treatment. Results A total of 188 patients were identified. The median age was 14 years (interquartile range, 9-16). Awake drainage with injected local anesthetic was used in 115 children; 62 underwent CS; and 11 underwent GA. Over 92% of the children tolerated I&D regardless of anesthesia, with no difference among groups ( P = .60). None of those who underwent I&D via CS returned to the emergency department within 15 days of the procedure, as compared with 5.2% for the awake group and 9.1% for the GA group ( P = .06). None in the GA or awake group had a complication associated with the procedure, as opposed to 9.6% in the CS group ( P = .02). Complications included apnea and dental trauma (2 children each) and transient hypotension and desaturation (1 each). Cost was highest in the GA group and lowest for the awake group ( P < .0001). Conclusion CS for PTA I&D is a viable treatment option with tolerance and success similar to that of the awake and GA groups. Complications were observed for those who underwent CS, but they were manageable.
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Pediatric Bacterial Tracheitis-A Variable Entity: Case Series with Literature Review. Otolaryngol Head Neck Surg 2018; 160:546-549. [PMID: 30348058 DOI: 10.1177/0194599818808774] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
OBJECTIVE To review the presentation and treatment of children diagnosed with bacterial tracheitis at our institution and to review the available literature focusing on key presenting symptoms and clinical outcomes of children diagnosed with bacterial tracheitis. STUDY DESIGN Case series with literature review. SETTING Tertiary children's hospital and available literature. SUBJECTS AND METHODS Case series of children with bacterial tracheitis retrospectively reviewed at a tertiary children's hospital. Those with a tracheostomy or those who developed bacterial tracheitis as a complication of prolonged intubation were excluded. RESULTS Thirty-six children were identified (mean ± SD age, 6.7 ± 4.5 years). The most common presenting symptom was cough (85%), followed by stridor (77%) and voice changes/hoarseness (67%). A concurrent viral illness was found for 55%, and the most common bacteria cultured was methicillin-sensitive Staphylococcus aureus. Pediatric intensive care admission occurred for 69%, and 43% required intubation. No patient required tracheostomy. One patient (2.7%) died secondary to airway obstruction and subsequent respiratory arrest. Four patients had recurrence of bacterial tracheitis 4 to 12 months following their initial presentation. CONCLUSION Bacterial tracheitis is an uncommon condition with an atypical presentation and variable clinical course but serious consequences if left unrecognized. Staphylococcus is the most common bacteria identified, and many patients will have a prodromal viral illness. Changes in patient epidemiology and presentation may have occurred over time.
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Management of midnasal stenosis with infant surgically assisted rapid palatal expansion (iSARPE). Laryngoscope 2018; 129:1211-1214. [PMID: 30325028 DOI: 10.1002/lary.27199] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2017] [Revised: 02/12/2018] [Accepted: 03/02/2018] [Indexed: 11/07/2022]
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Shared decision making and decisional conflict in the Management of Vestibular Schwannoma: a prospective cohort study. J Otolaryngol Head Neck Surg 2018; 47:52. [PMID: 30176947 PMCID: PMC6122206 DOI: 10.1186/s40463-018-0297-4] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2018] [Accepted: 08/26/2018] [Indexed: 02/01/2023] Open
Abstract
Background Patients with vestibular schwannomas (VS) are faced with complex management decisions. Watchful waiting, surgical resection, and radiation are all viable options with associated risks and benefits. We sought to determine if patients with VS experience decisional conflict when deciding between surgery or non-surgical management, and factors influencing the degree of decisional conflict. Methods A prospective cohort study in two tertiary ambulatory skull-base clinics was performed. Patients with newly diagnosed or newly growing vestibular schwannomas were recruited. Patients were given a demographic form and the decisional conflict scale (DCS), a validated measure to assess the degree of uncertainty when making medical decisions. The degree of shared decision making (SDM) experienced by the patient and physician were assessed via the SDM-Q-10 and SDM-Q-Doc questionnaires, respectively. Non-parametric statistics were used. Questionnaires and demographic information were correlated with DCS using Spearman correlation coefficient and Mann-Whitney U. Logistic regression was performed to determine factors independently associated with DCS scores. Results Seventy-seven patients participated (55% female, aged 37–81 years); VS ranged in size from 2 mm–50 mm. Significant decisional conflict (DCS score 25 or greater) was experienced by 17 (22%) patients. Patients reported an average SDM-Q-10 score of 86, indicating highly perceived level of SDM. Physician and patient SDM scores were weakly correlated (p = 0.045, Spearman correlation coefficient 0.234). DCS scores were significantly negatively correlated with a decision to pursue surgery, presence of a trainee, and higher SDM-Q-10 score. DCS was higher with female gender. Using logistic regression, the SDM-Q-10 score was the only variable associated with significantly reduced DCS. Conclusions About one fifth of patients deciding how to manage their vestibular schwannoma experienced a significant degree of decisional conflict. Involving the patients in the process through shared decision-making significantly reduced the degree of uncertainty patients experienced.
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Efficient decellularization of rabbit trachea to generate a tissue engineering scaffold biomatrix. Int J Pediatr Otorhinolaryngol 2018; 112:67-74. [PMID: 30055743 DOI: 10.1016/j.ijporl.2018.06.032] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/20/2018] [Revised: 06/15/2018] [Accepted: 06/15/2018] [Indexed: 12/20/2022]
Abstract
OBJECTIVES Most tracheal decellularization protocols are lengthy and can lead to reduced biomechanical stability. The objectives of this study were: 1) to generate a tracheal extracellular matrix scaffold using an efficient decellularization process and 2) to characterize the decellularized scaffold to assess its suitability for tissue engineering applications. METHODS Twelve rabbit tracheae underwent a decellularization process that involved enzymatic-detergent treatments. For characterization, fresh (control) and decellularized tissues underwent histological, immunohistochemical, and biochemical analyses. Tensile testing, scanning electron microscopy, and biocompatibility assay were also conducted. RESULTS Post-decellularization, the tracheal tissue had significantly less genetic material while the structural integrity was maintained. Specifically, the deoxyribonucleic acid content was significantly reduced and the glycosaminoglycan content was unchanged. Cell and cellular components were largely removed; at the same time the tensile properties and surface ultrastructural characteristics were unaltered. Biocompatibility was confirmed by contact cytotoxicity assay. CONCLUSIONS Overall, an efficient decellularization process was used to treat rabbit tracheal tissue. The effectiveness of the decellularization process was demonstrated and at the same time there was preservation of the underlying extracellular matrix structure. This decellularized material may serve as a potential scaffold for tracheal tissue engineering.
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Repair of Primary Cleft Palate and Oronasal Fistula With Acellular Dermal Matrix: A Systematic Review and Surgeon Survey. Cleft Palate Craniofac J 2018; 56:187-195. [PMID: 29727220 DOI: 10.1177/1055665618774028] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
Abstract
OBJECTIVE The current review and survey aim to assess the effectiveness of acellular dermal matrix (ADM) in the repair of cleft palate and oronasal fistula and to evaluate the current trends of ADM use in palate surgery. DESIGN A systematic review of English articles was conducted using MEDLINE (1960 to July 1, 2016), the Cochrane Controlled Trials Register (1960 to July 1, 2016), and EMBASE (1991 to July 1, 2016). Additional studies were identified through a review of references cited in initially identified articles. Search terms included "cleft palate," "palatal," "oronasal fistula," "acellular dermal matrix," and "Alloderm®." An online survey was disseminated to members of the American Cleft Palate-Craniofacial Association to assess current trends in ADM use in palate surgery. STUDY SELECTION All studies evaluating the outcome of primary palate repair or repair of oronasal fistula with the use of aceullar dermal matrix products were included in the review. RESULTS Twelve studies met inclusion criteria for review. Studies were generally of low quality, as indicated by methodological index for non-randomized studies (MINORS) scores ranging from 7 to 14. The pooled estimate for fistula formation after primary palatoplasty following ADM use was 7.1%. The pooled estimate for recurrence of fistula after attempted repair using ADM was 11%. Thirty-six cleft surgeons responded to the online survey study. Of these, 45% used ADM in primary cleft palate repair, while 67% used ADM for repair of oronasal fistulae. CONCLUSION Use of ADM products is commonplace in palate surgery. Despite this, there is a paucity of high-quality data demonstrating benefit. Further randomized controlled trials examining ADM in palate surgery are required to help develop structured guidelines and improve care.
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Papillary thyroid cancer recurrence 43 Years following Total Thyroidectomy and radioactive iodine ablation: a case report. Thyroid Res 2017; 10:8. [PMID: 29051792 PMCID: PMC5634945 DOI: 10.1186/s13044-017-0043-4] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/14/2017] [Accepted: 10/04/2017] [Indexed: 12/04/2022] Open
Abstract
Background Recurrent papillary thyroid carcinoma (PTC) beyond the first two decades of definitive treatment (i.e. total thyroidectomy and radioactive iodine ablation) is a rare occurrence. Case presentation We present a case of a 71-year old Caucasian female with a distant history of PTC treated with total thyroidectomy and radioactive iodine ablation who experienced recurrence of her disease 43 years following initial diagnosis and definitive treatment. She presented with palpable left-sided neck mass and subsequently underwent a level II, III, neck dissection and adjuvant iodine ablation. This case presents the latest recurrence in papillary thyroid cancer documented to date in the literature. Conclusion This case exemplifies the need for the head and neck surgeon, radiation oncologist, general practitioner and radiologist to consider new lateral neck mass as late-presenting recurrence of PTC until proven otherwise regardless of low recurrence rates beyond two decades from treatment and low prognostic risk scores.
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Development and characterization of decellularized human nasoseptal cartilage matrix for use in tissue engineering. Laryngoscope 2016; 126:2226-31. [PMID: 27232879 DOI: 10.1002/lary.25884] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2015] [Revised: 12/15/2016] [Accepted: 12/30/2015] [Indexed: 01/23/2023]
Abstract
OBJECTIVES/HYPOTHESIS Reconstruction of cartilage defects in the head and neck can require harvesting of autologous cartilage grafts, which can be associated with donor site morbidity. To overcome this limitation, tissue-engineering approaches may be used to generate cartilage grafts. The objective of this study was to decellularize and characterize human nasoseptal cartilage with the aim of generating a biological scaffold for cartilage tissue engineering. STUDY DESIGN Laboratory study using nasoseptal cartilage. METHODS Remnant human nasoseptal cartilage specimens were collected and subjected to a novel decellularization treatment. The decellularization process involved several cycles of enzymatic detergent treatments. For characterization, decellularized and fresh (control) specimens underwent histological, biochemical, and mechanical analyses. Scanning electron microscopy and biocompatibility assay were also performed. RESULTS The decellularization process had minimal effect on glycosaminoglycan content of the cartilage extracellular matrix. Deoxyribonucleic acid (DNA) analysis revealed the near-complete removal of genomic DNA from decellularized tissues. The effectiveness of the decellularization process was also confirmed on histological and scanning electron microscopic analyses. Mechanical testing results showed that the structural integrity of the decellularized tissue was maintained, and biocompatibility was confirmed. CONCLUSION Overall, the current decellularization treatment resulted in significant reduction of genetic/cellular material with preservation of the underlying extracellular matrix structure. This decellularized material may serve as a potential scaffold for cartilage tissue engineering. LEVEL OF EVIDENCE N/A. Laryngoscope, 126:2226-2231, 2016.
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Decisional Conflict in Parents Considering Bone-Anchored Hearing Devices in Children With Unilateral Aural Atresia. Ann Otol Rhinol Laryngol 2015; 124:925-30. [PMID: 26082472 DOI: 10.1177/0003489415592000] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
OBJECTIVE The benefits of bone-anchored hearing devices (BAHD) in children with unilateral aural atresia are controversial. We sought to determine whether there is parental decisional conflict surrounding elective placement of BAHD for this indication. METHODS Caregivers of pediatric patients with unilateral aural atresia and normal contralateral ear undergoing percutaneous BAHD consultation were enrolled. All consultations were carried out by one pediatric otolaryngologist in a consistent manner. After consultation, the participants completed a demographics form and the Decisional Conflict Scale (DCS) questionnaire. RESULTS Twenty-three caregivers of 15 male (65.2%) and 8 female (34.8%) children (mean age 5.65 years) participated. The overall median DCS score was 15.63 (standard error = 4.21). Significant decisional conflict (DCS score ≥ 25) was found in 10 participants (43.5%). The median DCS score in the group choosing surgery was 5.47, and it was 23.44 in those who did not choose surgery (Mann-Whitney U = 39, Z = -1.391, P = .164). The median DCS score for mothers and fathers was 25 and 3.91, respectively. CONCLUSION Many parents experienced significant decisional conflict when considering percutaneous BAHD surgery in children with unilateral aural atresia in our study population. Future research should explore the impact of decisional conflict on health outcomes.
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Understanding Shared Decision Making in Pediatric Otolaryngology. Otolaryngol Head Neck Surg 2015; 152:941-7. [DOI: 10.1177/0194599815574998] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2014] [Accepted: 02/06/2015] [Indexed: 01/06/2023]
Abstract
Objective The aim of this study was to describe the level of decisional conflict experienced by parents considering surgery for their children and to determine if decisional conflict and perceptions of shared decision making are related. Study design Prospective cohort study. Setting Academic pediatric otolaryngology clinic. Subjects and methods Sixty-five consecutive parents of children who underwent surgical consultation for elective otolaryngological procedures were prospectively enrolled. Participants completed the Shared Decision Making Questionnaire and the Decisional Conflict Scale. Surgeons completed the Shared Decision Making Questionnaire–Physician version. Results Eleven participants (16.9%) scored over 25 on the Decisional Conflict Scale, a previously defined clinical cutoff indicating significant decisional conflict. Parent years of education and parent ratings of shared decision making were significantly correlated with decisional conflict (positively and negatively correlated, respectively). A logistic regression indicated that shared decision making but not education predicted the presence of significant decisional conflict. Parent and physician ratings of shared decision making were not related, and there was no correlation between physician ratings of shared decision making and parental decisional conflict. Conclusions Many parents experienced considerable decisional conflict when making decisions about their child’s surgical treatment. Parents who perceived themselves as being more involved in the decision-making process reported less decisional conflict. Parents and physicians had different perceptions of shared decision making. Future research should develop and assess interventions to increase parents’ involvement in decision making and explore the impact of significant decisional conflict on health outcomes.
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Experimental study and analytical model of deformation of magnetostrictive films as applied to mirrors for x-ray space telescopes. APPLIED OPTICS 2014; 53:6256-6267. [PMID: 25322105 DOI: 10.1364/ao.53.006256] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/12/2014] [Accepted: 08/16/2014] [Indexed: 06/04/2023]
Abstract
The desire for continuously gaining new knowledge in astronomy has pushed the frontier of engineering methods to deliver lighter, thinner, higher quality mirrors at an affordable cost for use in an x-ray observatory. To address these needs, we have been investigating the application of magnetic smart materials (MSMs) deposited as a thin film on mirror substrates. MSMs have some interesting properties that make the application of MSMs to mirror substrates a promising solution for making the next generation of x-ray telescopes. Due to the ability to hold a shape with an impressed permanent magnetic field, MSMs have the potential to be the method used to make light weight, affordable x-ray telescope mirrors. This paper presents the experimental setup for measuring the deformation of the magnetostrictive bimorph specimens under an applied magnetic field, and the analytical and numerical analysis of the deformation. As a first step in the development of tools to predict deflections, we deposited Terfenol-D on the glass substrates. We then made measurements that were compared with the results from the analytical and numerical analysis. The surface profiles of thin-film specimens were measured under an external magnetic field with white light interferometry (WLI). The analytical model provides good predictions of film deformation behavior under various magnetic field strengths. This work establishes a solid foundation for further research to analyze the full three-dimensional deformation behavior of magnetostrictive thin films.
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A long-term morphometric analysis of auricular position post-otoplasty. J Plast Reconstr Aesthet Surg 2013; 66:1482-6. [DOI: 10.1016/j.bjps.2013.06.043] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2013] [Revised: 06/05/2013] [Accepted: 06/18/2013] [Indexed: 11/15/2022]
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