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Continuous nebulizer

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https://www.readbyqxmd.com/read/28875453/laboratory-study-comparing-pharmacopeial-testing-of-nebulizers-with-evaluation-based-on-nephele-mixing-inlet-methodology
#1
Mårten Svensson, Elna Berg, Jolyon Mitchell, Dennis Sandell
Determination of fine droplet dose with preparations for nebulization, currently deemed to be the metric most indicative of lung deposition and thus in vivo responses, involves combining two procedures following practice as described in the United States Pharmacopeia and the European Pharmacopeia. Delivered dose (DD) is established by simulating tidal breathing at the nebulizer, collecting the medication on a filter downstream of the nebulizer mouthpiece/facemask. Fine droplet fraction (FDF<x μm) is determined separately using a cooled cascade impactor operated at 15 L/min...
September 5, 2017: AAPS PharmSciTech
https://www.readbyqxmd.com/read/28874611/how-should-aerosols-be-delivered-during-invasive-mechanical-ventilation
#2
Rajiv Dhand
The delivery of aerosols to mechanically ventilated patients presents unique challenges and differs from inhaled drug delivery in spontaneously breathing patients in several respects. Successful aerosol delivery during invasive mechanical ventilation requires careful consideration of a host of factors that influence the amount of drug inhaled by the patient. Pressurized metered-dose inhalers and nebulizers (jet, ultrasonic, and vibrating mesh) are the most commonly used aerosol delivery devices in these patients, although other delivery devices, such as dry powder inhalers, soft mist inhalers, and intratracheal nebulizing catheters, could also be adapted for in-line use...
September 5, 2017: Respiratory Care
https://www.readbyqxmd.com/read/28838685/efficacy-and-safety-of-glycopyrrolate-eflow-%C3%A2-cs-nebulized-glycopyrrolate-in-moderate-to-very-severe-copd-results-from-the-glycopyrrolate-for-obstructive-lung-disease-via-electronic-nebulizer-golden-3-and-4-randomized-controlled-trials
#3
Edward Kerwin, James F Donohue, Thomas Goodin, Robert Tosiello, Alistair Wheeler, Gary T Ferguson
BACKGROUND: SUN-101 is a combination of glycopyrrolate delivered through an innovative, electronic nebulizer, intended for the treatment of patients with COPD. The objective of this study was to assess the efficacy and safety of this new drug device combination. METHODS: Replicate Phase III randomized, double-blind, placebo-controlled studies were conducted to evaluate the efficacy and safety of glycopyrrolate solution administered by an investigational eFlow(®) Closed System (eFlow(®) CS) nebulizer in subjects with moderate-to-very-severe COPD, including those with continued background use of a long-acting beta2-agonist ± inhaled corticosteroid and/or history of cardiovascular (CV) disease...
July 19, 2017: Respiratory Medicine
https://www.readbyqxmd.com/read/28832721/development-and-evaluation-of-an-inhalation-chamber-for-in-vivo-tests
#4
Eduardo R DA Silva, Humberto R Bizzo, Patrícia D Fernandes, Valdir F DA Veiga, Suzana G Leitão, Danilo R DE Oliveira
The bioavailability, toxicity, and therapeutic efficacy of a drug is directly related to its administration route. The pulmonary route can be accessed by inhalation after fumigation, vaporization or nebulization. Thus, pharmacological and toxicological evaluation accessed by an apparatus specifically designed and validated for this type of administration is extremely important. Based on pre-existing models, an inhalation chamber was developed. This presents a central structure with five animal holders. The nebulized air passes directly and continuously through these holders and subsequently to an outlet...
August 17, 2017: Anais da Academia Brasileira de Ciências
https://www.readbyqxmd.com/read/28814254/bronchiolitis-care-in-the-hospital
#5
Jennifer Orr Vincent, Huay-Ying Lo, Susan Wu
BACKGROUND: Viral bronchiolitis is a common cause of hospitalization in young children, but despite a variety of therapeutic options, the mainstay of treatment remains supportive care. OBJECTIVE: To examine the most recent evidence for supportive care measures and pharmacologic options in the treatment of bronchiolitis in the hospital setting Methods: MEDLINE search with expert medical librarian for publications on management and therapies for bronchiolitis Results: Evidence does not support the use of bronchodilators, racemic epinephrine, deep suctioning, systemic corticosteroids, or antibiotics in the absence of a concomitant bacterial infection, as these treatments do not change the course of illness or shorten length of stay (LOS)...
August 16, 2017: Reviews on Recent Clinical Trials
https://www.readbyqxmd.com/read/28766281/nebulized-antibiotics-in-mechanically-ventilated-patients-a-challenge-for-translational-research-from-technology-to-clinical-care
#6
REVIEW
Stephan Ehrmann, Jean Chastre, Patrice Diot, Qin Lu
Nebulized antibiotic therapy directly targets airways and lung parenchyma resulting in high local concentrations and potentially lower systemic toxicities. Experimental and clinical studies have provided evidence for elevated lung concentrations and rapid bacterial killing following the administration of nebulized antibiotics during mechanical ventilation. Delivery of high concentrations of antibiotics to infected lung regions is the key to achieving efficient nebulized antibiotic therapy. However, current non-standardized clinical practice, the difficulties with implementing optimal nebulization techniques and the lack of robust clinical data have limited its widespread adoption...
December 2017: Annals of Intensive Care
https://www.readbyqxmd.com/read/28720675/the-effect-of-nebulizer-position-on-aerosolized-epoprostenol-delivery-in-an-adult-lung-model
#7
Allison C Anderson, Meagan N Dubosky, Kelly A Fiorino, Vanessa Quintana, Carl A Kaplan, David L Vines
BACKGROUND: Aerosolized epoprostenol is an alternative for inhaled nitric oxide in the management of pulmonary arterial hypertension and possibly acute hypoxemia. Our objective was to determine differences in drug deposition based on different nebulizer positions in the ventilator circuit, using a vibrating mesh nebulizer. METHODS: An 8.0-mm inner diameter endotracheal tube (ETT) was connected to a training test lung, compliance of 30 mL/cm H2O, with a collecting filter placed at the ETT-test lung junction...
July 18, 2017: Respiratory Care
https://www.readbyqxmd.com/read/28718683/the-measurement-of-cough-response-to-bronchoconstriction-induced-by-methacholine-inhalation-in-healthy-subjects-an-examination-using-the-astograph-method
#8
Johsuke Hara, Masaki Fujimura, Noriyuki Ohkura, Tamami Sakai, Kenta Yamamura, Miki Abo, Hayato Koba, Satoshi Watanabe, Taro Yoneda, Shingo Nishikawa, Takashi Sone, Hideharu Kimura, Yoshihisa Ishiura, Kazuo Kasahara
BACKGROUND: We demonstrated that heightened cough response to bronchoconstriction is a fundamental feature of cough variant asthma (CVA). To evaluate this physiological feature of CVA in daily clinical practice, it is necessary to clarify the cough response to bronchoconstriction in healthy subjects. We evaluated cough response to methacholine (MCh)-induced bronchoconstriction in healthy subjects. A forced oscillometry technique was used to measure airway resistance changes with Mch. METHODS: Healthy never-smokers (21 men, 20 women; mean 22...
July 18, 2017: Experimental Lung Research
https://www.readbyqxmd.com/read/28692913/particle-and-bioaerosol-characteristics-in-a-paediatric-intensive-care-unit
#9
Congrong He, Ian M Mackay, Kay Ramsay, Zhen Liang, Timothy Kidd, Luke D Knibbs, Graham Johnson, Donna McNeale, Rebecca Stockwell, Mark G Coulthard, Debbie A Long, Tara J Williams, Caroline Duchaine, Natalie Smith, Claire Wainwright, Lidia Morawska
The paediatric intensive care unit (PICU) provides care to critically ill neonates, infants and children. These patients are vulnerable and susceptible to the environment surrounding them, yet there is little information available on indoor air quality and factors affecting it within a PICU. To address this gap in knowledge we conducted continuous indoor and outdoor airborne particle concentration measurements over a two-week period at the Royal Children's Hospital PICU in Brisbane, Australia, and we also collected 82 bioaerosol samples to test for the presence of bacterial and viral pathogens...
July 7, 2017: Environment International
https://www.readbyqxmd.com/read/28683216/pulmonary-drug-delivery-following-continuous-vibrating-mesh-nebulization-and-inspiratory-synchronized-vibrating-mesh-nebulization-during-noninvasive-ventilation-in-healthy-volunteers
#10
Jean-Bernard Michotte, Enrico Staderini, Anne-Sophie Aubriot, Emilie Jossen, Jonathan Dugernier, Giuseppe Liistro, Gregory Reychler
BACKGROUND: A breath-synchronized nebulization option that could potentially improve drug delivery during noninvasive positive pressure ventilation (NIPPV) is currently not available on single-limb circuit bilevel ventilators. The aim of this study was to compare urinary excretion of amikacin following aerosol delivery with a vibrating mesh nebulizer coupled to a single-limb circuit bilevel ventilator, using conventional continuous (Conti-Neb) and experimental inspiratory synchronized (Inspi-Neb) nebulization modes...
July 6, 2017: Journal of Aerosol Medicine and Pulmonary Drug Delivery
https://www.readbyqxmd.com/read/28644389/chronic-respiratory-infection-in-patients-with-chronic-obstructive-pulmonary-disease-what-is-the-role-of-antibiotics
#11
REVIEW
Marc Miravitlles, Antonio Anzueto
Chronic infections are associated with exacerbation in patients with chronic obstructive pulmonary disease (COPD). The major objective of the management of these patients is the prevention and effective treatment of exacerbations. Patients that have increased sputum production, associated with purulence and worsening shortness of breath, are the ones that will benefit from antibiotic therapy. It is important to give the appropriate antibiotic therapy to prevent treatment failure, relapse, and the emergence of resistant pathogens...
June 23, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28548898/comparison-of-a-rapid-albuterol-pathway-with-a-standard-pathway-for-the-treatment-of-children-with-a-moderate-to-severe-asthma-exacerbation-in-the-emergency-department
#12
Matthew Wilkinson, Ben King, Sujit Iyer, Eric Higginbotham, Anna Wallace, Collin Hovinga, Coburn Allen
OBJECTIVE: The objective of this study was to determine if a rapid albuterol delivery pathway with a breath-enhanced nebulizer can reduce emergency department (ED) length of stay (LOS), while maintaining admission rates and side effects, when compared to a traditional asthma pathway with a standard jet nebulizer. METHODS: Children aged 3-18 presenting to a large urban pediatric ED for asthma were enrolled if they were determined by pediatric asthma score to have a moderate to severe exacerbation...
May 26, 2017: Journal of Asthma: Official Journal of the Association for the Care of Asthma
https://www.readbyqxmd.com/read/28478753/antibiotic-prescription-patterns-in-spanish-cystic-fibrosis-patients-results-from-a-national-multicenter-study
#13
Juan de Dios Caballero, Rosa Girón, Rosa Del Campo, Concepción Prados, María-Isabel Barrio, Antonio Salcedo, Rafael Cantón
OBJECTIVE: Information about antibiotic prescription patterns for cystic fibrosis (CF) patients and, specifically, about inhaled treatment strategies for their management is lacking in Spain due to the absence of a national patient registry. In this study we present data about antibiotic prescription in the Spanish CF context that were obtained in a multicenter study, being inhaled treatment strategies the special focus of this work. METHODS: Twenty-four specialized CF units (12 adult, 12 pediatric) from 17 tertiary-care hospitals covering all Spanish Autonomous Communities provided sputa and clinical data from 15 consecutive patients...
May 1, 2017: Farmacia Hospitalaria
https://www.readbyqxmd.com/read/28372430/trace-explosives-sensor-testbed-testbed
#14
Greg E Collins, Michael P Malito, Cy R Tamanaha, Mark H Hammond, Braden C Giordano, Adam L Lubrano, Christopher R Field, Duane A Rogers, Russell A Jeffries, Richard J Colton, Susan L Rose-Pehrsson
A novel vapor delivery testbed, referred to as the Trace Explosives Sensor Testbed, or TESTbed, is demonstrated that is amenable to both high- and low-volatility explosives vapors including nitromethane, nitroglycerine, ethylene glycol dinitrate, triacetone triperoxide, 2,4,6-trinitrotoluene, pentaerythritol tetranitrate, and hexahydro-1,3,5-trinitro-1,3,5-triazine. The TESTbed incorporates a six-port dual-line manifold system allowing for rapid actuation between a dedicated clean air source and a trace explosives vapor source...
March 2017: Review of Scientific Instruments
https://www.readbyqxmd.com/read/28364140/insights-into-jumonji-c-domain-containing-protein-6-jmjd6-a-multifactorial-role-in-foot-and-mouth-disease-virus-replication-in-cells
#15
REVIEW
Paul Lawrence, Elizabeth Rieder
The Jumonji C-domain containing protein 6 (JMJD6) has had a convoluted history, and recent reports indicating a multifactorial role in foot-and-mouth disease virus (FMDV) infection have further complicated the functionality of this protein. It was first identified as the phosphatidylserine receptor on the cell surface responsible for recognizing phosphatidylserine on the surface of apoptotic cells resulting in their engulfment by phagocytic cells. Subsequent study revealed a nuclear subcellular localization, where JMJD6 participated in lysine hydroxylation and arginine demethylation of histone proteins and other non-histone proteins...
June 2017: Virus Genes
https://www.readbyqxmd.com/read/28349590/benzalkonium-chloride-a-bronchoconstricting-preservative-in-continuous-albuterol-nebulizer-solutions
#16
Sreekala Prabhakaran, Mutasim Abu-Hasan, Leslie Hendeles
For convenience, many pediatric hospitals are preparing solutions for continuous nebulized albuterol using the 0.5% 20-ml multidose albuterol dropper bottle. This product contains benzalkonium chloride (BAC) that, by itself, produces bronchospasm that is dose dependent and cumulative. The bronchoconstrictive effects of BAC are greater in patients with more severe airway obstruction and increased airway responsiveness. Use of BAC-containing albuterol during severe acute asthma exacerbations may antagonize the bronchodilator response to albuterol, prolong treatment, and increase the risk of albuterol-related systemic adverse effects...
March 28, 2017: Pharmacotherapy
https://www.readbyqxmd.com/read/28340754/an-environmentally-friendly-highly-efficient-gas-pressure-assisted-sample-introduction-system-for-icp-ms-and-its-application-to-detection-of-cadmium-and-lead-in-human-plasma
#17
Yupin Cao, Biyang Deng, Lizhen Yan, Hongli Huang
An environmentally friendly and highly efficient gas pressure-assisted sample introduction system (GPASIS) was developed for inductively-coupled plasma mass spectrometry. A GPASIS consisting of a gas-pressure control device, a customized nebulizer, and a custom-made spray chamber was fabricated. The advantages of this GPASIS derive from its high nebulization efficiencies, small sample volume requirements, low memory effects, good precision, and zero waste emission. A GPASIS can continuously, and stably, nebulize 10% NaCl solution for more than an hour without clogging...
May 15, 2017: Talanta
https://www.readbyqxmd.com/read/28340721/sensitive-determination-of-hg-together-with-mn-fe-cu-by-combined-photochemical-vapor-generation-and-pneumatic-nebulization-in-the-programmable-temperature-spray-chamber-and-inductively-coupled-plasma-optical-emission-spectrometry
#18
Jacek Giersz, Magdalena Bartosiak, Krzysztof Jankowski
Continuous photo-induced generation of mercury cold vapor has been successfully coupled with conventional pneumatic nebulization in programmable temperature spray chamber (PCVG-PN-PTSC) allowing fast, sensitive and easy multi-element analysis. The applied technique enabled simultaneous determination of non-volatile forming elements (Fe, Cu, Mn) and volatile Hg, while 15%v/v formic acid is present in the sample. PTSC elevated temperature (40°C) causes partial conversion of sample matrix into vapor form, thus improving plasma robustness...
May 15, 2017: Talanta
https://www.readbyqxmd.com/read/28325776/noninvasive-respiratory-support-during-pediatric-ground-transport-implementation-of-a-safe-and-feasible-procedure
#19
Nuria Millán, Carme Alejandre, Aina Martinez-Planas, Josep Caritg, Elisabeth Esteban, Martí Pons-Òdena
BACKGROUND: The purpose of this work was to determine the safety and feasibility of noninvasive support in children with acute respiratory failure (ARF) during interhospital ground transport. METHODS: This was a prospective, single-center observational clinical study in the pediatric transport unit of a tertiary-care pediatric hospital. We included all subjects with ARF transported from November 2010 to March 2013. A specific noninvasive support protocol was used for all cases...
March 21, 2017: Respiratory Care
https://www.readbyqxmd.com/read/28294577/the-enigma-of-inhaled-salbutamol-and-sport-unresolved-after-45%C3%A2-years
#20
Ken D Fitch
During the past 45 years, there have been more changes on the World Anti-Doping Agency's (WADA) Prohibited List (the List) to the status of inhaled salbutamol than any other substance. With 658 athletes, 6.1% of all participating athletes approved to inhale salbutamol at the 2008 Beijing Games, it is one of the medications used most frequently by Olympic athletes. Nevertheless, since the 2008 Games, WADA has made numerous changes to inhaled salbutamol on the List including prohibiting its use, then a year later permitting it without prior notification and recommending a pharmacokinetic study if an athlete exceeds the urinary threshold of 1000 ng/mL...
March 11, 2017: Drug Testing and Analysis
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