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Artificial larynx

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https://www.readbyqxmd.com/read/27692725/impact-of-cricothyroid-muscle-contraction-on-vocal-fold-vibration-experimental-study-with-high-speed-videoendoscopy
#1
Camila Cristina Ishikawa, Thais Gonçalves Pinheiro, Adriana Hachiya, Arlindo Neto Montagnoli, Domingos Hiroshi Tsuji
OBJECTIVES: The aim of this study was to evaluate the effects of cricothyroid muscle contraction on vocal fold vibration, as evaluated with high-speed videoendoscopy, and to identify one or more aspects of vocal fold vibration that could be used as an irrefutable indicator of unilateral cricothyroid muscle paralysis. STUDY DESIGN: This was an experimental study employing excised human larynges. METHODS: Twenty freshly excised human larynges were evaluated during artificially produced vibration...
September 28, 2016: Journal of Voice: Official Journal of the Voice Foundation
https://www.readbyqxmd.com/read/27538050/an-acoustic-study-of-vowels-produced-by-alaryngeal-speakers-in-taiwan
#2
Jia-Shiou Liao
Purpose: This study investigated the acoustic properties of 6 Taiwan Southern Min vowels produced by 10 laryngeal speakers (LA), 10 speakers with a pneumatic artificial larynx (PA), and 8 esophageal speakers (ES). Method: Each of the 6 monophthongs of Taiwan Southern Min (/i, e, a, ɔ, u, ə/) was represented by a Taiwan Southern Min character and appeared randomly on a list 3 times (6 Taiwan Southern Min characters × 3 repetitions = 18 tokens). Each Taiwan Southern Min character in this study has the same syllable structure, /V/, and all were read with tone 1 (high and level)...
November 1, 2016: American Journal of Speech-language Pathology
https://www.readbyqxmd.com/read/27312123/prenatal-features-of-pena-shokeir-sequence-with-atypical-response-to-acoustic-stimulation
#3
Sirida Pittyanont, Phudit Jatavan, Songkiat Suwansirikul, Theera Tongsong
A fetal sonographic screening examination performed at 23 weeks showed polyhydramnios, micrognathia, fixed postures of all long bones, but no movement and no breathing. The fetus showed fetal heart rate acceleration but no movement when acoustic stimulation was applied with artificial larynx. All these findings persisted on serial examinations. The neonate was stillborn at 37 weeks and a final diagnosis of Pena-Shokeir sequence was made. In addition to typical sonographic features of Pena-Shokeir sequence, fetal heart rate accelerations with no movement in response to acoustic stimulation suggests that peripheral myopathy may possibly play an important role in the pathogenesis of the disease...
September 2016: Journal of Clinical Ultrasound: JCU
https://www.readbyqxmd.com/read/26852823/computerized-tomography-measures-during-and-after-artificial-lengthening-of-the-vocal-tract-in-subjects-with-voice-disorders
#4
Marco Guzman, Gonzalo Miranda, Christian Olavarria, Sofia Madrid, Daniel Muñoz, Miguel Leiva, Lorena Lopez, Cori Bortnem
PURPOSE: The present study aimed to observe the effect of two types of tubes on vocal tract bidimensional and tridimensional images. METHODS: Ten participants with hyperfunctional dysphonia were included. Computerized tomography was performed during production of sustained [a:], followed by sustained phonation into a drinking straw, and then repetition of sustained [a:]. A similar procedure was performed with a stirring straw after 15 minutes of vocal rest. Anatomic distances and area measures were obtained from computerized tomography midsagittal and transversal images...
February 4, 2016: Journal of Voice: Official Journal of the Voice Foundation
https://www.readbyqxmd.com/read/26502653/-a-clinical-study-of-laryngotracheal-separation-in-spinal-muscular-atrophy-type-i-patients
#5
Tomohito Fujioka, Kousuke Nakano, Satoshi Maniwa
Artificial respiration by tracheostomy is necessary for long-term survival in spinal muscular atrophy (SMA) Type I patients. There are two types of tracheostomy: i )simple tracheostomy and ii) tracheostomy plus aspiration prevention surgery, including laryngotracheal separation. We experienced three cases of SMA type I patients that had good outcomes after undergoing laryngotracheal separation. The patients' ages at onset were 14 days, two months and one and a half months. Laryngotracheal separation was performed at five months, seven months, and 15 years and five months respectively, and the times from diagnosis to surgery were a month, three months and 15 years...
September 2015: No to Hattatsu. Brain and Development
https://www.readbyqxmd.com/read/26237923/-laryngeal-cancer-in-finland
#6
Reidar Grénman, Petri Koivunen, Heikki Minn
The risk of developing laryngeal cancer increases after 50 years of age. Of the risk factors, smoking has decreased significantly, but alcohol consumption has increased. The significance of HPV infection is lower compared with oropharyngeal cancer. Early laryngeal cancer can be successfully treated with surgery or radiation therapy. For cancers that have spread further (T3 and T4), a combination of surgery and radiotherapy or a combination of radiotherapy and cytostatic chemotherapy are used. By using a voice prosthesis, most patients are able to achieve a fairly good speech quality after laryngectomy...
2015: Duodecim; Lääketieteellinen Aikakauskirja
https://www.readbyqxmd.com/read/25985387/effects-of-inspiratory-pressure-rise-time-and-hypoxic-or-hypercapnic-breathing-on-inspiratory-laryngeal-constrictor-muscle-activity-during-nasal-pressure-support-ventilation
#7
Vincent Carrière, Danny Cantin, Stéphanie Nault, Charlène Nadeau, Nathalie Samson, Jennifer Beck, Jean-Paul Praud
OBJECTIVE: We previously reported the development of an active inspiratory laryngeal narrowing against ventilator insufflations when inspiratory pressure is increased during nasal pressure support ventilation in lambs. The present study aimed to further understand the factors involved in this inspiratory laryngeal narrowing. More specifically, we tested the hypothesis that a short inspiratory pressure rise time or a low PaCO2 level promotes inspiratory laryngeal narrowing observed in nasal pressure support ventilation...
August 2015: Critical Care Medicine
https://www.readbyqxmd.com/read/25975338/objective-comparison-of-animal-training-versus-artificial-simulation-for-initial-cricothyroidotomy-training
#8
RANDOMIZED CONTROLLED TRIAL
Kyle Iverson, Ramon Riojas, Danny Sharon, Andrew B Hall
This manuscript aims to determine if there is a difference in performance outcomes after initial training with either animals or simulators. Volunteers without prior experience performing emergency procedures were randomly assigned to receive training in cricothyroidotomy on either a pig model or on an artificial simulator. Volunteers were given identical lectures and trained to proficiency. Two weeks after training, trainees were tested using human cadavers as to their performance with time, incision size, incision start location, initial placement attempt, and final accuracy...
May 2015: American Surgeon
https://www.readbyqxmd.com/read/25967094/controlled-implant-soft-tissue-interaction-by-nanoscale-surface-modifications-of-3d-porous-titanium-implants
#9
Elisabeth Rieger, Agnès Dupret-Bories, Laetitia Salou, Marie-Helene Metz-Boutigue, Pierre Layrolle, Christian Debry, Philippe Lavalle, Nihal Engin Vrana
Porous titanium implants are widely employed in the orthopaedics field to ensure good bone fixation. Recently, the use of porous titanium implants has also been investigated in artificial larynx development in a clinical setting. Such uses necessitate a better understanding of the interaction of soft tissues with porous titanium structures. Moreover, surface treatments of titanium have been generally evaluated in planar structures, while the porous titanium implants have complex 3 dimensional (3D) architectures...
June 7, 2015: Nanoscale
https://www.readbyqxmd.com/read/25957625/safety-and-feasibility-of-the-laryngeal-tube-when-used-by-emts-during-out-of-hospital-cardiac-arrest
#10
Dominik Roth, Christina Hafner, Werner Aufmesser, Kurt Hudabiunigg, Christian Wutti, Harald Herkner, Wolfgang Schreiber
BACKGROUND: Ventilation is still one key element of advanced life support. Emergency medical technicians (EMTs) without training in advanced airway management usually use bag valve mask ventilation (BVM). Bag valve mask ventilation requires proper training and yet may be difficult and ineffective. Supraglottic airway devices, such as the laryngeal tube (LT), have been proposed as alternatives. Safety and feasibility are unclear if used by EMTs with limited training only. We compared efficacy of the LT to BVM for out-of-hospital cardiac arrest in a primarily volunteer-based emergency medical services...
August 2015: American Journal of Emergency Medicine
https://www.readbyqxmd.com/read/25916526/-surgical-management-of-refractory-dysphagia-and-aspiration
#11
Jian Wang, Wuyi Li, Jianhan Liu, Chunxiao Xu, Dahai Yang, Hong Huo, Xu Tian, Zhuhua Zhang, Yu Chen
OBJECTIVE: To explore the methods and results of surgical management for refractory dysphagia and aspiration. METHODS: The clinical data of 24 refractory dysphagia and aspiration patients who accepted surgical management were retrospectively analysed. RESULTS: Twenty-four refractory dysphagia and aspiration patients accepted 26 operations between 2001 and 2014. Of the 26 operations, 17 were cricopharyngeal myectomy (CPM), 6 were scarectomy, 3 were laryngeal-tracheal separation...
February 2015: Zhonghua Er Bi Yan Hou Tou Jing Wai Ke za Zhi, Chinese Journal of Otorhinolaryngology Head and Neck Surgery
https://www.readbyqxmd.com/read/25895309/-surgical-treatment-of-differentiated-thyroid-carcinoma-with-laryngeal-or-tracheal-invasion
#12
Xinbo Xu, Wenming Li, Tong Jin, Ye Qian, Dongmin Wei, Ruijie Sun, Dayu Liu, Dapeng Lei, Xinliang Pan
OBJECTIVE: To analyze the clinical characters, surgical treatments and prognosis of differentiated thyroid carcinoma (DTC) with laryngeal or tracheal invasion. METHOD: Forty-six cases including 33 papillary and 13 follicular were retrospectively reviewed. Thirty-four cases with tracheal invasion received conservative resection (17), window resection (11) and sleeve resection (6). One case with subglottic invasion was performed subglottic partial laryngectomy. Eleven cases with trachea-laryngeal invasion received total laryngectomy(4), 3 shave technique and 4 preservative laryngectomy...
December 2014: Journal of Clinical Otorhinolaryngology, Head, and Neck Surgery
https://www.readbyqxmd.com/read/25764768/-application-of-simple-tracheostomy-in-the-preservation-of-laryngeal-function-in-laryngeal-cancer-operation
#13
Riqun Jin, Shaoping Peng, Zhiying Liao
No abstract text is available yet for this article.
October 2014: Journal of Clinical Otorhinolaryngology, Head, and Neck Surgery
https://www.readbyqxmd.com/read/25734308/-the-use-of-the-lactate-fortified-milk-whey-for-the-prolongation-of-the-functional-life-of-the-voice-prostheses
#14
E N Novozhilova, O V Ol'shanskaia
The objective of the present study was to develop the method for the prolongation of the functional life of the voice prostheses in the patients who underwent laryngectomy with special reference to the decrease of the risk of mycotic infection in the laryngo-oesophageal region. The original method is proposed with the application of the lactate-fortified milk whey that makes it possible to maintain the high concentration of living lactic acid bacteria in the laryngo-oesophageal segment where the voice prosthesis is located...
2014: Vestnik Otorinolaringologii
https://www.readbyqxmd.com/read/25733791/life-threatening-angiomyxoma-of-the-larynx
#15
Huseyin Yaman, Havva Erdem, Abdullah Belada, Fahri Halit Besir, Murat Oktay, Ali Kemal Uzunlar
BACKGROUND: Angiomyxoma is a benign proliferative mesenchymal tumor and a very rare mass in the larynx. There is not enough information about the etiology, clinical finding, treatment and prognosis of laryngeal angiomyxoma. CASE DETAILS: A 52 years old man presented with respiratory distress. Also, he had suffered from dysphagia, dysphonia, cough, and obstructive sleep apnea in the supine position for 6 months. He was operated on via transoral approach under general anesthesia with orotracheal intubation...
January 2015: Ethiopian Journal of Health Sciences
https://www.readbyqxmd.com/read/25717026/closure-of-tracheoesophageal-puncture-with-pedicled-fascia-flap-of-the-sternocleidomastoid-muscle
#16
Koichiro Wasano, Noriomi Suzuki, Taiji Kawasaki, Sayuri Yamamoto, Shujiro Minami, Taku Yamashita, Kaoru Ogawa
OBJECTIVE: Closure of a tracheoesophageal puncture (TEP) formed during voice prosthesis implantation may sometimes be required. We report a new method of closure that we have termed the RESET method. METHODS: We used the RESET method for four patients. An initial incision was made at the mucocutaneous junction of the tracheostoma, and the trachea and esophagus were separated. The TEP was sectioned, and the tracheal and esophageal sides were sutured into separate layers...
August 2015: Auris, Nasus, Larynx
https://www.readbyqxmd.com/read/25703274/detection-of-ideal-reservoir-level-after-laryngectomy-using-endoilluminator-in-voice-rehabilitation
#17
Ali Ahmet Sirin, Ibrahim Erdim, Bahadir Baykal, Fatih Oghan, Rasim Yilmazer, Ali Guvey, Fatma Tulin Kayhan
OBJECTIVE: To assess the diagnostic value of a novel device, the endoilluminator, in patients who can or cannot attain effective speech after application of voice prosthesis. STUDY DESIGN: Prospective clinical study. METHODS: Thirty-four patients who underwent total laryngectomy and whose insufflation test was positive were included. As a result of efforts to develop an insufflation test that includes a light apparatus, we attained a device that we call an endoilluminator...
July 2015: Laryngoscope
https://www.readbyqxmd.com/read/25686515/amplified-recruitment-pressure-of-biofouling-organisms-in-commercial-salmon-farms-potential-causes-and-implications-for-farm-management
#18
Nina Bloecher, Oliver Floerl, Leif Magne Sunde
The development of biofouling on finfish aquaculture farms presents challenges for the industry, but the factors underlying nuisance growths are still not well understood. Artificial settlement surfaces were used to examine two possible explanations for high rates of biofouling in Norwegian salmon farms: (1) increased propagule release during net cleaning operations, resulting in elevated recruitment rates; and (2) potential reservoir effects of farm surfaces. The presence of salmon farms was associated with consistently and substantially (up to 49-fold) elevated recruitment rates...
2015: Biofouling
https://www.readbyqxmd.com/read/25638960/understanding-the-challenges-during-transitions-of-care-for-children-with-critical-airway-conditions
#19
Annette McDonough, Kevin M Callans, Diane L Carroll
PURPOSE: The specific aim of this qualitative descriptive study was to gain an understanding of the challenges occurring during transitions of care between two institutions for children with critical airway conditions. METHODS: Qualitative descriptive methodology was utilized to analyze data from two focus groups conducted with nurses from two adjacent institutions. RESULTS: The focus groups were composed of 19 staff nurses, three case managers, one clinical nurse specialist and two nurse directors...
2014: ORL-head and Neck Nursing: Official Journal of the Society of Otorhinolaryngology and Head-Neck Nurses
https://www.readbyqxmd.com/read/25616222/classification-models-based-on-the-level-of-metals-in-hair-and-nails-of-laryngeal-cancer-patients-diagnosis-support-or-rather-speculation
#20
Magdalena Golasik, Wojciech Jawień, Agnieszka Przybyłowicz, Witold Szyfter, Małgorzata Herman, Wojciech Golusiński, Ewa Florek, Wojciech Piekoszewski
The etiology of cancer is complex, and the disturbances in toxic and essential metals homeostasis are among many of the factors that lead to the development of malignancy. The aim of this study is to investigate the relationship between cancer risk and element status as well as cancer risk and external factors, such as diet, smoking and drinking habits, in order to support diagnosis of cancer. The samples of hair and nails obtained from patients with larynx cancer and healthy subjects were analyzed. Essential elements (Ca, Cr, Mg, Zn, Cu, Mn, and Fe), besides toxic metals (Cd, Co, and Pb), were determined using inductively coupled plasma atomic emission spectrometry (ICP-OES) and mass spectrometry (ICP-MS) techniques...
March 2015: Metallomics: Integrated Biometal Science
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