keyword
MENU ▼
Read by QxMD icon Read
search

Nasal valve

keyword
https://www.readbyqxmd.com/read/29337433/numerical-simulation-of-two-consecutive-nasal-respiratory-cycles-toward-a-better-understanding-of-nasal-physiology
#1
Ludovic de Gabory, Nicolas Reville, Yannick Baux, Nicolas Boisson, Laurence Bordenave
BACKGROUND: Computational fluid dynamic (CFD) simulations have greatly improved the understanding of nasal physiology. We postulate that simulating the entire and repeated respiratory nasal cycles, within the whole sinonasal cavities, is mandatory to gather more accurate observations and better understand airflow patterns. METHODS: A 3-dimensional (3D) sinonasal model was constructed from a healthy adult computed tomography (CT) scan which discretized in 6.6 million cells (mean volume, 0...
January 16, 2018: International Forum of Allergy & Rhinology
https://www.readbyqxmd.com/read/29322251/rhinoplasty-lessons-from-errors-from-anatomy-and-experience-to-the-concept-of-sequential-primary-rhinoplasty
#2
REVIEW
Y Saban
BACKGROUND: Reshaping the nose can be achieved following 3 main concepts: preservation and reshaping of normal anatomy, resection of nasal deformities, reconstruction of nasal framework. Time, experience and nasal anatomic knowledge are keys to understand nasal biomechanics. OBJECTIVES: To describe how experience and morphodynamic anatomy lead to a new concept of sequential primary rhinoplasty, resulting in reducing revision rhinoplasties. METHODS: Through 36 years' experience in different rhinoplasty procedures, 25 years in personal anatomic studies of the nose and reviewing the last 15 years including 600 patients who underwent new concepts in primary rhinoplasty out of 1200 patients operated during this period, the author analyzes how nasal anatomic layers, surgical approaches, and morphological effect of the time interact to modify the aesthetic results according to current rhinoplasty concepts...
January 10, 2018: HNO
https://www.readbyqxmd.com/read/29242911/comparison-of-airflow-between-spreader-grafts-and-butterfly-grafts-using-computational-flow-dynamics-in-a-cadaveric-model
#3
Bryan M Brandon, Grace K Austin, Gita Fleischman, Saikat Basu, Julia S Kimbell, William W Shockley, J Madison Clark
Importance: Nasal valve compromise is a major cause of nasal obstruction, and multiple methods have been developed to address it. Objective: To compare nasal airflow resistance, airflow partitioning, and mucosal cooling (heat flux) before and after 2 surgical interventions, butterfly and spreader graft placement, used to treat nasal valve compromise. Design, Setting, and Participants: In this cadaveric tissue study, 4 fresh cadaveric heads underwent both spreader graft and butterfly graft surgical procedures in alternating sequence in March 2016...
December 14, 2017: JAMA Facial Plastic Surgery
https://www.readbyqxmd.com/read/29204589/hyoid-myotomy-and-suspension-without-simultaneous-palate-or-tongue-base-surgery%C3%A2-for-obstructive-sleep-apnea
#4
Adrian A Ong, Jonathan Buttram, Shaun A Nguyen, Dustin Platter, Michael R Abidin, M Boyd Gillespie
Objective: Determine the effects of hyoid myotomy and suspension (HMS) without concurrent palatal or tongue base sleep surgery for obstructive sleep apnea (OSA). Method: Patients with OSA treated with HMS were identified using CPT code (21685) at an academic and private sleep surgery clinic. Those who underwent concurrent palatal or tongue base sleep surgery were excluded. Outcomes included simultaneous procedures, apnea-hypopnea index (AHI), lowest oxyhemoglobin saturation (LSAT), and Epworth Sleepiness Scale (ESS)...
June 2017: World Journal of Otorhinolaryngology—Head and Neck Surgery
https://www.readbyqxmd.com/read/29204576/comparison-of-3%C3%A2-mm-versus-4%C3%A2-mm-rigid-endoscope-in-diagnostic-nasal-endoscopy
#5
Gregory S Neel, Ryan L Kau, Stephen F Bansberg, Devyani Lal
Objective: Compare nasal endoscopy with 3 mm versus conventional 4 mm rigid 30° endoscopes for visualization, patient comfort, and examiner ease. Methods: Ten adults with no previous sinus surgery underwent bilateral nasal endoscopy with both 4 mm and 3 mm endoscopes (resulting in 20 paired nasal endoscopies). Visualization, patient discomfort and examiner's difficulty were assessed with every endoscopy. Sino-nasal structures were checked on a list if visualized satisfactorily...
March 2017: World Journal of Otorhinolaryngology—Head and Neck Surgery
https://www.readbyqxmd.com/read/29198536/infants-with-atypical-presentations-of-alveolar-capillary-dysplasia-with-misalignment-of-the-pulmonary-veins-who-underwent-bilateral-lung-transplantation
#6
Christopher T Towe, Frances V White, R Mark Grady, Stuart C Sweet, Pirooz Eghtesady, Daniel J Wegner, Partha Sen, Przemyslaw Szafranski, Pawel Stankiewicz, Aaron Hamvas, F Sessions Cole, Jennifer A Wambach
OBJECTIVE: To describe disease course, histopathology, and outcomes for infants with atypical presentations of alveolar capillary dysplasia with misalignment of the pulmonary veins (ACDMPV) who underwent bilateral lung transplantation. STUDY DESIGN: We reviewed clinical history, diagnostic studies, explant histology, genetic sequence results, and post-transplant course for 6 infants with atypical ACDMPV who underwent bilateral lung transplantation at St. Louis Children's Hospital...
November 30, 2017: Journal of Pediatrics
https://www.readbyqxmd.com/read/29124376/an-alternative-rhinoplasty-technique-rotational-spreader-flap-rabbit-flap
#7
Ali Ahmet Sirin, Ibrahim Erdim, Omer Erdur, Alperen Sirin
BACKGROUND: In modern rhinoplasty, septal cartilage is the most commonly used graft material. It is a big challenge if septal cartilage is insufficient. We present an alternative technique named the "rabbit flap," created from the cephalic portion of the lower lateral cartilage to show its effectiveness on nasolabial angle, nasal axis deviation, and nasal dorsal line. METHODS: An alternative flap, called a "rabbit flap," is constituted from the cephalic portion of the lower lateral cartilage (LLC)...
November 9, 2017: Aesthetic Plastic Surgery
https://www.readbyqxmd.com/read/29105874/nocturnal-nasal-obstruction-is-frequent-and-reduces-sleep-quality-in-patients-with-obstructive-sleep-apnea
#8
Maria Värendh, Morgan Andersson, Erla Bjørnsdottir, Harald Hrubos-Strøm, Arne Johannisson, Erna S Arnardottir, Thorarinn Gislason, Sigurdur Juliusson
The prevalence and consequences of nasal obstruction in untreated obstructive sleep apnea patients are not known. The study objectives were to investigate the frequency of subjective and objective nasal obstruction in untreated sleep apnea patients and the associations with sleep and quality of life. Patients in the Icelandic Sleep Apnea Cohort were subjected to a type 3 sleep study, answered questionnaires and had their nasal dimensions measured by acoustic rhinometry. In total, 810 patients participated (including 153 females), aged 54...
November 6, 2017: Journal of Sleep Research
https://www.readbyqxmd.com/read/29074148/geometry-and-airflow-dynamics-analysis-in-the-nasal-cavity-during-inhalation
#9
REVIEW
Kiao Inthavong, Jiawei Ma, Yidan Shang, Jingliang Dong, Annicka S R Chetty, Jiyuan Tu, Dennis Frank-Ito
BACKGROUND: A major issue among computational respiratory studies is the wide variety of nasal morphologies being studied, caused by both inter-population and inter-subject variations. METHOD: Six nasal cavity geometries exhibiting diverse geometry variations were subjected to steady inhalation flow rate of 15L/min. to determine if any consistent flow behaviour could be found. FINDINGS: Despite vastly different geometries we were able to identify consistent flow patterns including relatively high velocity in the nasal valve region, followed by flow continuing predominantly in the inferior half of the airway...
October 7, 2017: Clinical Biomechanics
https://www.readbyqxmd.com/read/29068965/single-stage-repair-of-palatal-fistula-and-velopharyngeal-incompetence-by-the-new-l-flap
#10
Mohammad Waheed El-Anwar, Ezzeddin Elsheikh, Sherif Askar
OBJECTIVE: To describe and assess the results of use of the new L-shaped posterior pharyngeal flap for repair of both palatal fistula and velopharyngeal incompetence. METHODS: This study included 10 patients who were diagnosed to have soft palate fistula and persistent velopharyngeal insufficiency (VPI). L-shaped superiorly based pharyngeal flap was harvested from oropharynx and inserted into the soft palate closing the fistula after fistula trimming. The palatal part of the flap (transverse limb) was spread 1 cm horizontally and 1 cm in the anteroposterior direction in soft palate at fistula site closing it without tension...
October 24, 2017: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/29044537/in-vivo-imaging-of-the-internal-nasal-valve-during-different-conditions-using-optical-coherence-tomography
#11
Anna S Englhard, Maximilian Wiedmann, Georg J Ledderose, Bryan Lemieux, Alan Badran, Joseph C Jing, Zhongping Chen, Veronika Volgger, Brian J F Wong
OBJECTIVE: Previously, we proposed long-range optical coherence tomography (LR-OCT) to be an effective method for the quantitative evaluation of the nasal valve geometry. Here, the objective was to quantify the reduction in the internal nasal valve angle and cross-sectional area that results in subjective nasal airway obstruction and to evaluate the dynamic behavior of the valve during respiration using LR-OCT. METHODS: For 16 healthy individuals, LR-OCT was performed in each naris during: 1) normal respiration, 2) peak forced inspiration, 3) lateral nasal wall depression (to the onset of obstructive symptoms), and 4) after application of a topical decongestant...
October 17, 2017: Laryngoscope
https://www.readbyqxmd.com/read/29040026/a-comparison-of-the-success-rates-of-endoscopic-assisted-probing-in-the-treatment-of-membranous-congenital-nasolacrimal-duct-obstruction-between-younger-and-older-children-and-its-correlation-with-the-thickness-of-the-membrane-at-the-valve-of-hasner
#12
Nishi Gupta, Chawla Neeraj, Bansal Smriti, Das Sima
Congenital nasolacrimal duct obstruction (CNLDO) remains the most common cause of epiphora in infants. This retrospective study compares the success rate of nasal endoscopic-assisted probing between younger (3 years and below) and older (above 3 years) children with membranous CNLDO and its correlation with the thickness of the membrane at the valve of Hasner. Case records of a total of 38 eyes in 34 children with membranous CNLDO who underwent endoscopic nasolacrimal duct probing and irrigation under general anesthesia were analyzed...
October 17, 2017: Orbit
https://www.readbyqxmd.com/read/28968314/reconstruction-of-an-alar-defect-with-a-fusiform-nasolabial-turnover-flap-with-a-proximal-superiorly-tapered-apex
#13
Constantin El Habr, Gian Vinelli, Adam Tinklepaugh, David Ciocon
The nasolabial turnover flap was first described by Spear et al in 1987 for the coverage of full thickness defects of the lateral ala. It offered a single-stage repair that recreated the internal nasal lining, the external nasal valve, and the rounded contour of the ala without requiring a cartilage graft. A frequently encountered problem with the execution of Spear's original design is elevation of the ipsilateral commissure of the adjacent lip due to its broad proximal pedicle. Here, the authors describe a fusiform-type design with a proximal, superiorly tapered apex that relies on anteriorly coursing perforators from the underlying angular artery...
September 29, 2017: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/28947026/manometry-optimized-positive-expiratory-pressure-mopep-in-excessive-dynamic-airway-collapse-edac
#14
Muhammad A Zafar, Aaron M Mulhall, William Eschenbacher, Ajay Kaul, Sadia Benzaquen, Ralph J Panos
BACKGROUND: Positive expiratory pressure(PEP) breathing modalities are commonly prescribed in obstructive lung diseases, however practical methods of airway pressures(AP) quantification for therapeutic efficacy are lacking. Excessive dynamic airway collapse(EDAC) is characterized by expiratory central airway collapse leading to dyspnea and poor quality of life(QoL), with limited therapeutic options. PURPOSE: To measure AP and exertional dyspnea in EDAC patients during normal breathing and with use of pursed-lip breathing(PLB), nasal PEP device(nPEP), and oral-PEP valve(oPEP) during rest and exercise using an Esophageal Manometer...
October 2017: Respiratory Medicine
https://www.readbyqxmd.com/read/28945621/managing-nasal-valve-compromise-with-suspension-sutures
#15
Meredith L Orseth, Rajiv I Nijhawan
No abstract text is available yet for this article.
September 20, 2017: Dermatologic Surgery: Official Publication for American Society for Dermatologic Surgery [et Al.]
https://www.readbyqxmd.com/read/28901030/treating-osa-current-and-emerging-therapies-beyond-cpap
#16
REVIEW
Geraldo Lorenzi-Filho, Fernanda R Almeida, Patrick J Strollo
Continuous positive airway pressure (CPAP) is the standard treatment for moderate-to-severe obstructive sleep apnoea (OSA). However, adherence to CPAP is limited and non-CPAP therapies are frequently explored. Oral appliance (OA) therapy is currently widely used for the treatment of snoring, mild, moderate and severe OSA. The most commonly used and studied OA consists of a maxillary and mandibular splint which hold the lower jaw forward during sleep. The efficacy of OA is inferior to CPAP; however, the effectiveness as measured by sleepiness, quality of life, endothelial function and blood pressure is similar likely due to higher acceptance and subjective adherence...
November 2017: Respirology: Official Journal of the Asian Pacific Society of Respirology
https://www.readbyqxmd.com/read/28887135/progress-in-brain-targeting-drug-delivery-system-by-nasal-route
#17
REVIEW
Abdur Rauf Khan, Mengrui Liu, Muhammad Wasim Khan, Guangxi Zhai
The blood-brain barrier (BBB) restricts the transport of potential therapeutic moieties to the brain. Direct targeting the brain via olfactory and trigeminal neural pathways by passing the BBB has gained an important consideration for delivery of wide range of therapeutics to brain. Intranasal route of transportation directly delivers the drugs to brain without systemic absorption, thus avoiding the side effects and enhancing the efficacy of neurotherapeutics. Over the last several decades, different drug delivery systems (DDSs) have been studied for targeting the brain by the nasal route...
September 6, 2017: Journal of Controlled Release: Official Journal of the Controlled Release Society
https://www.readbyqxmd.com/read/28880380/faster-improvement-in-migraine-pain-intensity-and-migraine-related-disability-at-early-time-points-with-avp-825-sumatriptan-nasal-powder-delivery-system-versus-oral-sumatriptan-a-comparative-randomized-clinical-trial-across-multiple-attacks-from-the-compass
#18
Richard B Lipton, James S McGinley, Kenneth J Shulman, R J Wirth, Dawn C Buse
BACKGROUND: Fast relief of migraine pain, associated symptoms, and migraine-related disability are priorities in the acute treatment of migraine. Efforts to improve the pharmacokinetic profiles of acute migraine treatments with the aim of providing faster relief include the development of non-oral routes of administration. AVP-825 (ONZETRA(®) Xsail(®) ) is a delivery system containing 22 mg sumatriptan powder that uses a patient's own breath to deliver medication intranasally, targeting the upper posterior nasal cavity beyond the narrow nasal valve, an area lined with vascular mucosa conducive to rapid drug absorption into the systemic circulation...
September 7, 2017: Headache
https://www.readbyqxmd.com/read/28859710/the-effect-of-closed-septorhinoplasty-on-nasal-functions-and-on-external-and-internal-nasal-valves-a-prospective-study
#19
Giancarlo Pecorari, Giuseppe Riva, Francesca Antonella Bianchi, Giovanni Cavallo, Francesca Revello, Marco Bironzo, Laura Verzè, Massimiliano Garzaro, Guglielmo Ramieri
BACKGROUND: Because nasal function and shape are so closely intertwined, quantitative assessments can better define their relationship and how they are affected by septorhinoplasty. OBJECTIVE: The aim of this prospective study was to perform an analysis of the nasal airflow resistances and a three-dimensional (3D) evaluation of the soft-tissue changes after closed septorhinoplasty. METHODS: Before surgery (T0) and 6 months after closed septorhinoplasty (T1), 30 patients underwent symptoms evaluation by means of the Italian version of the Nasal Obstruction Symptom Evaluation scale, endoscopic fiberoptic nasal examination, and visual analog scale for subjective assessment of nasal obstruction...
September 1, 2017: American Journal of Rhinology & Allergy
https://www.readbyqxmd.com/read/28815972/assessing-the-ideal-microwave-duration-for-disinfection-of-sinus-irrigation-bottles-a-quantitative-study
#20
E Nikolaou, E Mitsi, D M Ferreira, A Bartolo, S C Leong
OBJECTIVES: Saline irrigation of the nasal cavity and paranasal sinuses by one-way valved sinus containers has a recognised role in the management of chronic rhinosinusitis. However, bacterial recontamination of irrigation bottles through backflow from the sinonasal cavity is a concern in recurrent sinus cavity infections. While patients are encouraged to clean the irrigation bottles regularly, there remains significant concern that the use of contaminated bottles may perpetuate chronic rhinosinusitis...
August 16, 2017: Clinical Otolaryngology
keyword
keyword
4317
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"