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airway reconstruction

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https://www.readbyqxmd.com/read/28629919/comparing-pulmonary-nodule-location-during-electromagnetic-bronchoscopy-with-predicted-location-based-on-two-virtual-airway-maps-at-different-phases-of-respiration
#1
Brian S Furukawa, Nicholas J Pastis, Nichole T Tanner, Alexander Chen, Gerard A Silvestri
BACKGROUND: Electromagnetic navigational bronchoscopy (ENB) is guided-bronchoscopy to pulmonary nodules (PN) which relies on a pre-procedural chest CT to create a 3-dimensional (3-D) virtual airway map. The CT is traditionally done at a full inspiratory breath hold (INSP) but the procedure is performed while the patient tidal breaths, where lung volumes are closer to functional residual capacity. Movement of a PN from INSP to expiration (EXP) has been shown to average 17.6 mm. Therefore, the hypothesis of this study is that pre-procedural virtual maps built off a CT closer to physiological lung volumes during bronchoscopy may better represent the actual 3-D location of a PN...
June 16, 2017: Chest
https://www.readbyqxmd.com/read/28623043/nasal-airway-evaluation-in-obstructive-sleep-apnoea-patients-volumetric-tomography-and-endoscopic-findings
#2
M M Rodrigues, M F R Gabrielli, O A Garcia Junior, V A Pereira Filho, L A Passeri
Obstructive sleep apnoea (OSA) results from the recurrent collapse of the upper airway during sleep. Nasal abnormalities influence the stability of the pharynx. The aim of this study was to evaluate the volumetric and anatomical changes of the nasal cavity in patients with OSA. The Nasal Obstruction Symptom Evaluation (NOSE) scale was used to grade nasal obstruction. Sleep-related breathing disorders were evaluated by polysomnography. The nasal airway volume was obtained from computed tomography scans through volumetric reconstruction of the nasal airway...
June 13, 2017: International Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/28610885/three-dimensional-printed-bioengineered-tracheal-grafts-preclinical-results-and-potential-for-human-use
#3
Sadiq S Rehmani, Adnan M Al-Ayoubi, Adil Ayub, Michael Barsky, Erik Lewis, Raja Flores, Robert Lebovics, Faiz Y Bhora
BACKGROUND: We aimed to develop a process using three-dimensional (3D) printing to create bioengineered tracheal grafts (BETGs) for reconstruction of anterior tracheal defects in a large-animal model (porcine) that would have translational relevance for potential human use. METHODS: Preoperative computed tomographic scans were used to create virtual 3D models of the animal airways. Anatomically scaled tracheal grafts were subsequently developed using 3D-printed polycaprolactone and extracellular matrix...
June 11, 2017: Annals of Thoracic Surgery
https://www.readbyqxmd.com/read/28595251/use-of-turn-in-skin-flaps-for-nasal-lining-reconstruction
#4
Memet Yazar, Sevgi Kurt Yazar, Erol Kozanoğlu, Murat Diyarbakırlıoğlu, Hikmet İhsan Eren
BACKGROUND: Reconstruction of the nasal lining is the most difficult part of complex nasal reconstruction because the mucosa has a unique texture and fineness. Many techniques, ranging from skin grafts to local flaps, have been applied for the reconstruction of the mucosa. In some cases, even free flaps have been used. OBJECTIVE: The aim of this study was to discuss the feasibility of using turn-in flaps in nasal reconstruction. MATERIALS AND METHODS: Seventeen patients with full-thickness nasal defects underwent reconstruction with turn-in flaps...
June 6, 2017: Dermatologic Surgery: Official Publication for American Society for Dermatologic Surgery [et Al.]
https://www.readbyqxmd.com/read/28590308/perioperative-factors-related-to-the-severity-of-vocal-cord-paralysis-after-thoracic-cardiovascular-surgery-a-retrospective-review
#5
Hiroki Taenaka, Sho Carl Shibata, Kenta Okitsu, Takeshi Iritakenishi, Tatsuyuki Imada, Akinori Uchiyama, Yuji Fujino
BACKGROUND: Vocal cord paralysis (VCP) is a rare complication of thoracic cardiovascular surgery. In severe cases, life-threatening airway obstruction may occur. OBJECTIVE: To evaluate the incidence and severity of VCP among patients who underwent thoracic cardiovascular surgery and to identify possible risk factors. DESIGN: Single-centre retrospective review of adult patients. SETTING: Osaka University Hospital, Suita, Japan, from January 2013 to August 2015...
July 2017: European Journal of Anaesthesiology
https://www.readbyqxmd.com/read/28577852/fascia-temporalis-free-flap-for-cricotracheal-reconstruction-a-novel-approach
#6
Bertrand Baujat, Samuel Struk, Maria Lesnik, Olivier de Crouy Chanel, Jonathan Barbut, Marine Lefevre, Sophie Périé, Jean Lacau St Guily
BACKGROUND: The aim of tracheal reconstruction is to provide an airtight and noncollapsible airway covered with a suitable epithelial lining. To date, no ideal treatment is available for large tracheal defects. METHODS: We report 4 patients who underwent one-stage reconstruction for a cricotracheal stenosis with a free temporoparietal fascia flap and costal cartilage grafts. RESULTS: Closure of tracheostoma was achieved for all patients. The main advantage of this flap compared with the free radial forearm flap is that it supplies a more suitable lining allowing the reepithelialization process with respiratory epithelium...
June 1, 2017: Annals of Thoracic Surgery
https://www.readbyqxmd.com/read/28570032/free-breathing-pediatric-chest-mri-performance-of-self-navigated-golden-angle-ordered-conical-ultrashort-echo-time-acquisition
#7
Evan J Zucker, Joseph Y Cheng, Anshul Haldipur, Michael Carl, Shreyas S Vasanawala
PURPOSE: To assess the feasibility and performance of conical k-space trajectory free-breathing ultrashort echo time (UTE) chest magnetic resonance imaging (MRI) versus four-dimensional (4D) flow and effects of 50% data subsampling and soft-gated motion correction. MATERIALS AND METHODS: Thirty-two consecutive children who underwent both 4D flow and UTE ferumoxytol-enhanced chest MR (mean age: 5.4 years, range: 6 days to 15.7 years) in one 3T exam were recruited...
June 1, 2017: Journal of Magnetic Resonance Imaging: JMRI
https://www.readbyqxmd.com/read/28544662/tracheal-replacement-therapy-with-a-stem-cell-seeded-graft-lessons-from-compassionate-use-application-of-a-gmp-compliant-tissue-engineered-medicine
#8
Martin J Elliott, Colin R Butler, Aikaterini Varanou-Jenkins, Leanne Partington, Carla Carvalho, Edward Samuel, Claire Crowley, Peggy Lange, Nicholas J Hamilton, Robert E Hynds, Tahera Ansari, Paul Sibbons, Anja Fierens, Claire McLaren, Derek Roebuck, Colin Wallis, Nagarajan Muthialu, Richard Hewitt, David Crabbe, Sam M Janes, Paolo De Coppi, Mark W Lowdell, Martin A Birchall
Tracheal replacement for the treatment of end-stage airway disease remains an elusive goal. The use of tissue-engineered tracheae in compassionate use cases suggests that such an approach is a viable option. Here, a stem cell-seeded, decellularized tissue-engineered tracheal graft was used on a compassionate basis for a girl with critical tracheal stenosis after conventional reconstructive techniques failed. The graft represents the first cell-seeded tracheal graft manufactured to full good manufacturing practice (GMP) standards...
June 2017: Stem Cells Translational Medicine
https://www.readbyqxmd.com/read/28523349/diagnosis-of-bronchiectasis-and-airway-wall-thickening-in-children-with-cystic-fibrosis-objective-airway-artery-quantification
#9
Wieying Kuo, Marleen de Bruijne, Jens Petersen, Kazem Nasserinejad, Hadiye Ozturk, Yong Chen, Adria Perez-Rovira, Harm A W M Tiddens
OBJECTIVES: To quantify airway and artery (AA)-dimensions in cystic fibrosis (CF) and control patients for objective CT diagnosis of bronchiectasis and airway wall thickness (AWT). METHODS: Spirometer-guided inspiratory and expiratory CTs of 11 CF and 12 control patients were collected retrospectively. Airway pathways were annotated semi-automatically to reconstruct three-dimensional bronchial trees. All visible AA-pairs were measured perpendicular to the airway axis...
May 18, 2017: European Radiology
https://www.readbyqxmd.com/read/28518105/murine-lymphocyte-labeling-by-64cu-antibody-receptor-targeting-for-in-vivo-cell-trafficking-by-pet-ct
#10
Sabrina H L Hoffmann, Andreas Maurer, Dorothea I Reck, Gerald Reischl, Bernd J Pichler, Manfred Kneilling, Christoph M Griessinger
This protocol illustrates the production of (64)Cu and the chelator conjugation/radiolabeling of a monoclonal antibody (mAb) followed by murine lymphocyte cell culture and (64)Cu-antibody receptor targeting of the cells. In vitro evaluation of the radiolabel and non-invasive in vivo cell tracking in an animal model of an airway delayed-type hypersensitivity reaction (DTHR) by PET/CT are described. In detail, the conjugation of a mAb with the chelator 1,4,7,10-tetraazacyclododecane-1,4,7,10-tetraacetic acid (DOTA) is shown...
April 29, 2017: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/28504356/bronchoscopy-in-children-with-tetralogy-of-fallot-pulmonary-atresia-and-major-aortopulmonary-collaterals
#11
Douglas R Sidell, Andrew M Koth, Holly Bauser-Heaton, Doff B McElhinney, Lisa Wise-Faberowski, Michael C Tracy, Frank L Hanley, Ritu Asija
OBJECTIVE: Children with Tetralogy of Fallot, Pulmonary Atresia, and Major Aortopulmonary Collaterals (TOF/PA/MAPCAs) undergoing unifocalization surgery are at risk for developing more postoperative respiratory complications than children undergoing other types of congenital heart surgery. Bronchoscopy is used in the perioperative period for diagnostic and therapeutic purposes. In this study, we describe bronchoscopic findings and identify factors associated with selection for bronchoscopy...
May 15, 2017: Pediatric Pulmonology
https://www.readbyqxmd.com/read/28445200/the-nasal-tip-rotation-flap-for-reconstruction-of-the-lateral-nasal-tip-anterior-ala-and-soft-triangle-the-authors-experience-with-55-patients
#12
Anastasia Benoit, S Tyler Hollmig, Brian C Leach
BACKGROUND: Defects of the lateral nasal tip, anterior ala, and soft triangle subunits lack reconstructive options that are consistently satisfactory. For such defects, the novel anterior-based nasal tip rotation flap provides functional and aesthetic results in a single operative session. OBJECTIVE: To describe the authors' experience with the nasal tip rotation flap, including patient selection and design modifications to enhance aesthetic success. METHODS: An IRB-approved retrospective database review of nasal tip rotation flap repairs was performed at the Medical University of South Carolina and Stanford University Medical Center...
April 24, 2017: Dermatologic Surgery: Official Publication for American Society for Dermatologic Surgery [et Al.]
https://www.readbyqxmd.com/read/28440536/selected-bone-morphogenetic-proteins-the-possibility-of-their-use-in-the-diagnostics-and-therapy-of-severe-asthma
#13
Marcelina Koćwin, Mateusz Jonakowski, Marcelina Przemęcka, Michał Panek, Piotr Kuna
Asthma is a chronic heterogeneous illness of the lower airway with an inflammatory basis, developing from hyperresponsiveness and bronchial obstruction. One of the more unfavourable processes occurring in the airway are the long-term changes of the respiratory tract known as remodelling, resulting in complete irreversible obstruction. Bone morphogenetic protein (BMP) is a member of the Transforming Growth Factor beta (TGF-b) superfamily, which regulates processes in embryonic and post-embryonic development...
2017: Advances in Respiratory Medicine
https://www.readbyqxmd.com/read/28439444/airway-management-of-patients-undergoing-oral-cancer-surgery-a-retrospective-analysis-of-156-patients
#14
Sapna Annaji Nikhar, Ashima Sharma, Mahesh Ramdaspally, Ramachandran Gopinath
OBJECTIVE: Oral cancer patients have a potentially difficult airway, but if managed properly during the perioperative period, morbidity and mortality can be reduced or avoided. METHODS: The medical records of 156 patients who were operated for oral cancers were reviewed for airway management during the perioperative period. RESULTS: The surgical procedures ranged from excisions, wide local excisions with split skin graftings, hemiglossectomies and radical neck nodes dissections to pectoralis major myocutaneous or free fibular flaps...
April 2017: Turkish Journal of Anaesthesiology and Reanimation
https://www.readbyqxmd.com/read/28421875/three-dimensional-printing-and-its-applications-in-otorhinolaryngology-head-and-neck-surgery
#15
Trevor D Crafts, Susan E Ellsperman, Todd J Wannemuehler, Travis D Bellicchi, Taha Z Shipchandler, Avinash V Mantravadi
Objective Three-dimensional (3D)-printing technology is being employed in a variety of medical and surgical specialties to improve patient care and advance resident physician training. As the costs of implementing 3D printing have declined, the use of this technology has expanded, especially within surgical specialties. This article explores the types of 3D printing available, highlights the benefits and drawbacks of each methodology, provides examples of how 3D printing has been applied within the field of otolaryngology-head and neck surgery, discusses future innovations, and explores the financial impact of these advances...
November 1, 2016: Otolaryngology—Head and Neck Surgery
https://www.readbyqxmd.com/read/28418700/three-dimensional-analysis-of-upper-airway-morphology-in-skeletal-class-iii-patients-with-and-without-mandibular-asymmetry
#16
Xi Wen, Xiyu Wang, Shuqi Qin, Lorenzo Franchi, Yan Gu
OBJECTIVE: To compare the three-dimensional (3D) morphology of the upper airway in skeletal Class III patients with and without mandibular asymmetry and to investigate the possible underlying correlations between the morphology of the upper airway and mandibular deviation. MATERIALS AND METHODS: Cone-beam computed tomography images of 54 subjects with skeletal Class III malocclusion (ANB angle ≤ 0.4°, Wits ≤ -5.5°) were taken and 3D upper airway models were reconstructed using Dolphin 3D software...
April 18, 2017: Angle Orthodontist
https://www.readbyqxmd.com/read/28418443/inaugural-symposium-on-advanced-surgical-techniques-in-adult-airway-reconstruction-proceedings-of-the-north-american-airway-collaborative-noaac
#17
James J Daniero, Dale C Ekbom, Alexander Gelbard, Lee M Akst, Alexander T Hillel
No abstract text is available yet for this article.
June 1, 2017: JAMA Otolaryngology—Head & Neck Surgery
https://www.readbyqxmd.com/read/28416345/laryngeal-function-preserving-operation-for-t4a-laryngeal-cancer-with-vocal-cord-paralysis-a-case-report
#18
Yukinori Asada, Koreyuki Kurosawa, Ko Matsumoto, Takahiro Goto, Kengo Katoh, Takayuki Imai, Shigeru Saijo, Kazuto Matsuura
For locally advanced laryngeal cancers, the standard treatment of choice is chemoradiotherapy if organ function needs to be conserved. Surgical treatment with larynx preservation is conducted only for limited cases. For locally advanced laryngeal cancers such as those with vocal cord fixation and/or cricoid cartilage destruction, there is no apparent standardized organ-preserving surgery keeping the essential laryngeal functions, viz. the airway, deglutition and articulation, uncompromized. Recently, our surgical team saw a patient with T4a advanced laryngeal cancer with vocal cord fixation who aspired to maintain his laryngeal function...
April 14, 2017: Auris, Nasus, Larynx
https://www.readbyqxmd.com/read/28414873/influence-of-pharyngeal-airway-respiration-pressure-on-class-ii-mandibular-retrusion-in-children-a-computational-fluid-dynamics-study-of-inspiration-and-expiration
#19
T Iwasaki, H Sato, H Suga, Y Takemoto, E Inada, I Saitoh, K Kakuno, R Kanomi, Y Yamasaki
OBJECTIVES: To examine the influence of negative pressure of the pharyngeal airway on mandibular retraction during inspiration in children with nasal obstruction using the computational fluid dynamics (CFD) method. SETTING AND SAMPLE POPULATION: Sixty-two children were divided into Classes I, II (mandibular retrusion) and III (mandibular protrusion) malocclusion groups. MATERIAL AND METHODS: Cone-beam computed tomography data were used to reconstruct three-dimensional shapes of the nasal and pharyngeal airways...
May 2017: Orthodontics & Craniofacial Research
https://www.readbyqxmd.com/read/28412180/computational-fluid-dynamics-study-of-the-pharyngeal-airway-space-before-and-after-mandibular-setback-surgery-in-patients-with-mandibular-prognathism
#20
Y Yajima, M Oshima, T Iwai, H Kitajima, S Omura, I Tohnai
The purpose of this study was to investigate the relationship between the pressure drop in the pharyngeal airway space (ΔPPAS) and the minimum cross-sectional area (minCSA) of the pharyngeal airway before and after mandibular setback surgery using computational fluid dynamics, in order to prevent iatrogenic obstructive sleep apnoea. Eleven patients with mandibular prognathism underwent bilateral sagittal split osteotomy for mandibular setback. Three-dimensional models of the upper airway were reconstructed from preoperative and postoperative computed tomography images, and simulations were performed using computational fluid dynamics...
July 2017: International Journal of Oral and Maxillofacial Surgery
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