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Laryngotracheal

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https://www.readbyqxmd.com/read/28194527/impairment-of-infectious-laryngotracheitis-virus-replication-by-deletion-of-the-ul-1-gene
#1
M Nadimpalli, S W Lee, J M Devlin, J R Gilkerson, C A Hartley
Infectious laryngotracheitis virus (ILTV) encodes several unique genes, including a pair of unique nuclear proteins UL0 and UL[-1] that are expressed during replication in cell culture. Although the UL0 gene has been shown to be dispensable for replication, the role of UL[-1] has not been elucidated. In this study a deletion mutant of ILTV lacking the UL[-1] gene was constructed using homologous recombination. The coding sequences of the gene were replaced with the gene for enhanced green fluorescent protein and the cytomegalovirus major immediate early promoter element...
February 13, 2017: Archives of Virology
https://www.readbyqxmd.com/read/28167015/external-airway-splint-to-treat-tracheomalacia-following-laryngotracheal-reconstruction
#2
Wayne D Hsueh, Lee P Smith
This observation reports the use of an external airway splint to treat tracheomalacia in a pediatric patient. The patient underwent a double stage laryngotracheal reconstruction however was unable to be decannulated due to severe tracheomalacia. Our purpose is to further support the use of external splinting in the treatment of tracheomalacia in a unique case involving isolated nighttime airway obstruction following laryngotracheal reconstruction.
March 2017: International Journal of Pediatric Otorhinolaryngology
https://www.readbyqxmd.com/read/28163937/a-narrowing-diagnosis-a-rare-cause-of-adult-croup-and-literature-review
#3
Jayshil J Patel, Emily Kitchin, Kurt Pfeifer
Croup or laryngotracheitis is rare in adults. We present a case of an otherwise healthy young woman that presented in the winter with 3 days of increasing dyspnea, cough, and fever. She was hemodynamically stable but was found to have a barking cough, paradoxical abdominal breathing, and stridor. Chest radiograph revealed subglottic narrowing. Respiratory viral nucleic acid amplification testing was positive for respiratory syncytial virus. The patient was treated with nebulized epinephrine, dexamethasone, and a helium-oxygen mixture...
2017: Case Reports in Critical Care
https://www.readbyqxmd.com/read/28151004/evaluation-of-factors-influencing-the-development-of-late-marek-s-disease-virus-induced-immunosuppression-virus-pathotype-and-host-sex
#4
Nik M Faiz, Aneg L Cortes, James S Guy, Oscar J Fletcher, Thomas Cimino, Isabel M Gimeno
Marek's disease virus (MDV) is a herpesvirus that induces lymphoma and immunosuppression in chickens. MDV induced immunosuppression (MDV-IS) is complex and can be divided into two phases: early-MDV-IS associated with cytolytic infection in the lymphoid organs in chickens lacking maternal antibodies against MDV (MAbs) and late-MDV-IS that appears later in the pathogenesis and occurs even in chickens bearing MAbs. We have recently developed a model to reproduce late-MDV-IS under laboratory conditions. This model evaluates late-MDV-IS indirectly by assessing the effect of MDV infection on the efficacy of infectious laryngotracheitis vaccines against challenge with infectious laryngotracheitis virus...
February 2, 2017: Avian Pathology: Journal of the W.V.P.A
https://www.readbyqxmd.com/read/28132084/pediatric-airway-surgery
#5
REVIEW
Kosaku Maeda
Pediatric airway surgery is a challenging field in pediatric surgery. Laryngotracheal stenosis has a variety of congenital and acquired conditions that require precise assessment and tailored treatment for each individual patient. About 90% of acquired conditions are represented by subglottic stenosis (SGS) resulting as a complication of tracheal intubation. Congenital tracheal stenosis (CTS) is a rare and life-threatening malformation, usually associated with complete tracheal rings along a variable length of the trachea...
January 28, 2017: Pediatric Surgery International
https://www.readbyqxmd.com/read/28124628/comparison-of-swallowing-outcomes-of-laryngotracheal-separation-versus-total-laryngectomy-in-a-validated-ovine-model-of-profound-oropharyngeal-dysphagia
#6
N N Venkatesan, C M Johnson, M T Siddiqui, D J Cates, M A Kuhn, G N Postma, P C Belafsky
OBJECTIVES: To validate the ovine model of profound oropharyngeal dysphagia and compare swallowing outcomes of laryngotracheal separation with those of total laryngectomy. METHODS: Under real-time fluoroscopy, swallowing trials were conducted using the head and neck of two Dorper cross ewes and one human cadaver, secured in lateral fluoroscopic orientation. Barium trials were administered at baseline, pre- and post-laryngohyoid suspension, following laryngotracheal separation, and following laryngectomy in the ovine model...
January 26, 2017: Journal of Laryngology and Otology
https://www.readbyqxmd.com/read/28122110/invasive-fungal-laryngopharyngitis-resulting-in-laryngeal-destruction-with-complete-laryngotracheal-separation-report-of-a-case
#7
Tyler Swiss, Sergio Santino Cervantes, Michael Hinni, David G Lott
As the treatment of hematopoietic cancers evolves, otolaryngologists will see a higher incidence of opportunistic infections. We discuss a case of invasive fungal disease that invaded the larynx, pharynx, trachea, and pulmonary parenchyma after chemotherapy. The patient, a 46-year-old woman, presented 1 week after undergoing induction chemotherapy. Her initial symptoms were odynophagia and dysphagia. Despite encouraging findings on physical examination, her health rapidly declined and she required an urgent tracheotomy and multiple operations to address spreading necrosis...
January 2017: Ear, Nose, & Throat Journal
https://www.readbyqxmd.com/read/28112014/laryngotracheal-stenosis
#8
Shekhar K Gadkaree, Vinciya Pandian, Simon Best, Kevin M Motz, Clint Allen, Young Kim, Lee Akst, Alexander T Hillel
Objective Laryngotracheal stenosis (LTS) is a fibrotic process that narrows the upper airway and has a significant impact on breathing and phonation. Iatrogenic injury from endotracheal and/or tracheostomy tubes is the most common etiology. This study investigates differences in LTS etiologies as they relate to tracheostomy dependence and dilation interval. Study Design Case series with chart review. Setting Single-center tertiary care facility. Subjects and Methods Review of adult patients with LTS was performed between 2004 and 2015...
February 2017: Otolaryngology—Head and Neck Surgery
https://www.readbyqxmd.com/read/28109571/in%C3%A2-vivo-tissue-engineering-of-human%C3%A2-airways
#9
Emmanuel Martinod, Joseph Paquet, Hervé Dutau, Dana M Radu, Morad Bensidhoum, Sébastien Abad, Yurdagül Uzunhan, Eric Vicaut, Hervé Petite
BACKGROUND: Airway transplantation remains a major challenge in thoracic surgery. Based on our previous laboratory work, we developed the techniques required to bioengineer a tracheal substitute in vivo using cryopreserved aortic allografts as biological matrices (Replacement of the Airways and/or the Pulmonary Vessels Using a Cryopreserved Arterial Allograft [TRACHEOBRONCART] Study, NCT01331863). We present here 2 patients who had a definitive tracheostomy for complex laryngotracheal stenoses refractory to conventional therapy...
January 18, 2017: Annals of Thoracic Surgery
https://www.readbyqxmd.com/read/28109507/surgery-of-the-head-and-neck-in-patient-with-kniest-dysplasia-is-wound-healing-an-issue
#10
Qasim Husain, Jungsuk Cho, Jay Neugarten, Vikash K Modi
Kniest dysplasia is a type II collagen disorder that arises from a genetic mutation of the COL2A1 gene that results in short stature, midface anomalies, tracheomalacia, and hearing loss. Disruption of the normal collagen pathway can lead to many changes given its critical role in the body, and can cause complications with respect to wound healing. We present a case in which a patient with Kniest dysplasia successfully underwent multiple procedures in the head and neck region including cochlear implantation, mandibular distraction, palatoplasty, and laryngotracheal reconstruction...
February 2017: International Journal of Pediatric Otorhinolaryngology
https://www.readbyqxmd.com/read/28097852/laryngotracheal-edema-due-to-thermal-injury-a-complication-after-thyroidectomy-in-children
#11
Pinar Kendigelen, Ayse C Tutuncu, Gulruh Ashyralyyeva, Senol Emreb, Seval Urkmez, Tughan Utkua, Guner Kaya
Postoperative respiratory insufficiency is a serious complication of total thyroidectomies which can be multifactorial, especially in children. We report two siblings who had undergone thyroidectomy with subsequent respiratory distress. Electrothermal bipolar and harmonic scalpel were used during thyroid dissections. Both patients had early postoperative respiratory problems. The older one suffered from mild respiratory distress for 24 hours and then he spontaneously recovered. The younger one was extubated but then she had serious stridor accompanied with abdominal and intercostal retractions...
1, 2017: Archivos Argentinos de Pediatría
https://www.readbyqxmd.com/read/28069269/clinical-considerations-for-blunt-laryngotracheal-trauma-in-children
#12
REVIEW
Jeffrey Cheng, Matthew Cooper, Elisabeth Tracy
OBJECTIVE: Systematic review of blunt pediatric laryngeal and tracheal trauma and development of proposed evaluation and management strategy. STUDY DESIGN: Systematic review and proposed clinical consideration algorithm. DATA SOURCES: PubMed, EMBASE, Web of Science, and Cochrane Central Register of Controlled Trials. REVIEW METHODS: A medical librarian was utilized. RESULTS: 329 titles and abstracts were identified, and 50 reports were included...
December 30, 2016: Journal of Pediatric Surgery
https://www.readbyqxmd.com/read/28057380/current-and-future-vaccines-and-vaccination-strategies-against-infectious-laryngotracheitis-ilt-respiratory-disease-of-poultry
#13
Maricarmen García
Infectious laryngotracheitis (ILT) is an economically important respiratory disease of poultry that affects the industry worldwide. Vaccination is the principal tool in the control of the disease. Two types of vaccines, live attenuated and recombinant viral vector, are commercially available. The first generation of GaHV-1 vaccines available since the early 1960's are live viruses, attenuated by continuous passages in cell culture or embryos. These vaccines significantly reduce mortalities and, in particular, the chicken embryo origin (CEO) vaccines have shown to limit outbreaks of the disease...
December 24, 2016: Veterinary Microbiology
https://www.readbyqxmd.com/read/28052812/newcastle-disease-virus-vectored-infectious-laryngotracheitis-vaccines-protect-commercial-broiler-chickens-in-the-presence-of-maternally-derived-antibodies
#14
Qingzhong Yu, Stephen Spatz, Yufeng Li, Jilong Yang, Wei Zhao, Zhenyu Zhang, Guoyuan Wen, Maricarmen Garcia, Laszlo Zsak
Newcastle disease virus (NDV) recombinants expressing the infectious laryngotracheitis virus (ILTV) glycoproteins B and D have previously been demonstrated to confer complete clinical protection against virulent ILTV and NDV challenges in naive chickens. We extended this study to assess whether maternally derived antibody (MDA) against NDV and ILTV would interfere with protection in vaccinated broiler chickens. Chickens with a mean NDV MDA hemagglutination inhibition (HI) titer of 6.4 (log2) and detectable ILTV neutralization (VN) antibodies at hatch were vaccinated with rLS/ILTV-gB or rLS/ILTV-gD at 1 or 10day of age (DOA) or on both days...
February 1, 2017: Vaccine
https://www.readbyqxmd.com/read/28050205/tracheostomy-in-the-intensive-care-unit-a-university-hospital-in-a-developing-country-study
#15
Mohammad Waheed El-Anwar, Ahmad Abdel-Fattah Nofal, Mohammad A El Shawadfy, Ahmed Maaty, Alaa Omar Khazbak
Introduction Tracheostomy is the commonest surgical procedure in intensive care units (ICUs). It not only provides stable airway and facilitates pulmonary toilet and ventilator weaning, but also decreases the direct laryngeal injury of endotracheal intubation, and improves patient comfort and daily living activity. Objective The objective of this study is to assess the incidence, indications, timing, complications (early and late), and the outcome of tracheostomy on patients in the intensive care units (ICU) at a university hospital in a developing country...
January 2017: International Archives of Otorhinolaryngology
https://www.readbyqxmd.com/read/28036249/a-novel-alphaherpesvirus-associated-with-fatal-diseases-in-banded-penguins
#16
Florian Pfaff, Christoph Schulze, Patricia König, Kati Franzke, Sabine Bock, Andreas Hlinak, Jens Kämmerling, Andreas Ochs, André Schüle, Thomas C Mettenleiter, Dirk Höper, Martin Beer
A novel avian alphaherpesvirus, preliminarily designated sphenicid alphaherpesvirus 1 (SpAHV-1), has been independently isolated from juvenile Humboldt and African penguins (Spheniscus humboldti and Spheniscus demersus) kept in German zoos suffering from diphtheroid oropharyngitis/laryngotracheitis and necrotizing enteritis (collectively designated as penguin-diphtheria-like disease). High-throughput sequencing was used to determine the complete genome sequences of the first two SpAHV-1 isolates. SpAHV-1 comprises a class D genome with a length of about 164 kbp, a G+C content of 45...
January 2017: Journal of General Virology
https://www.readbyqxmd.com/read/28018809/airway-management-via-laryngeal-mask-in-laryngotracheal-resection
#17
Patrick Zardo, Tom Kreft, Thomas Hachenberg
We present a case of impassable subglottic stenosis scheduled for tracheal resection and reconstruction managed by establishing a supraglottic airway. Despite careful preoperative evaluation, the stenosis was localized higher than anticipated, rendering conventional intubation impossible. Laryngeal mask bridging to cross-field ventilation was feasible and jet ventilation and cardiopulmonary bypass were available as emergency strategies. Surgery and emergence went uneventful. Perioperative considerations are discussed in this report...
December 2016: Thoracic and Cardiovascular Surgeon Reports
https://www.readbyqxmd.com/read/28012513/minimally-invasive-endoscopic-treatment-for-pediatric-combined-high-grade-stenosis-as-a-laryngeal-manifestation-of-epidermolysis-bullosa
#18
Dora Palinko, Vera Matievics, Ilona Szegesdi, Balazs Sztano, Laszlo Rovo
Epidermolysis bullosa refers to a clinically and genetically heterogeneous group of inherited mucocutaneous diseases. Laryngotracheal lesions are momentous regarding the risk of sudden airway obstruction. The traditional treatment is tracheostomy. This case report highlights the advantages of minimally invasive interventions. A successful combined endoscopic management of a life-threatening respiratory crisis is presented in a 4-year-old child. Combined commissure stenosis with supraglottic spread was treated by CO2 laser dissection and bilateral endoscopic arytenoid abduction lateropexy, supplemented with mitomycin C application...
January 2017: International Journal of Pediatric Otorhinolaryngology
https://www.readbyqxmd.com/read/28004261/the-therapy-with-ethosomes-containing-5-fluorouracil-for-laryngotracheal-stenosis-in-rabbit-models
#19
Xiaohui Mao, Xuefeng Cheng, Zheng Zhang, Zhaoyan Wang, Zhentao Wang
The aim of this study is to evaluate the efficacy of ethosomes encapsulated with 5-fluorouracil (5-FU) in treatment of laryngotracheal stenosis in rabbit models. The 5-FU ethosome was prepared by the thin film hydration method, and the amorphous, size distribution and the encapsulation efficiency was investigated. The tracheal mucosa were scraped about 0.5 cm with a nylon brush to induce the scar in airway grow, then models were divided into three groups: 5-FU ethosome group, 5-FU group and saline group, drug were injected into scar of every group by paracentesis guided under endoscope, respectively...
December 21, 2016: European Archives of Oto-rhino-laryngology
https://www.readbyqxmd.com/read/27996119/bevacizumab-chemotherapy-for-management-of-pulmonary-and-laryngotracheal-papillomatosis-in-a-child
#20
Karen B Zur, Elizabeth Fox
Recurrent laryngeal papillomatosis (RRP) can be a devastating condition for a child to endure, and pulmonary involvement may have terminal consequences. Adjuvant therapies have been trialed and reported over the years; however, these chemotherapy options have not been successful. Bevacizumab (Avastin, Genetech Inc., South San Francisco, CA) is a vascular endothelial factor (VEGF) inhibitor that has shown promise in the management of papillomatosis. Most research has focused on intralesional injections of this antiangiogenic drug...
December 20, 2016: Laryngoscope
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