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Inhaler technique

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https://www.readbyqxmd.com/read/28821437/particle-sizing-of-pharmaceutical-aerosols-via-direct-imaging-of-particle-settling-velocities
#1
Rami Fishler, Frank Verhoeven, Wilbur de Kruijf, Josué Sznitman
We present a novel method for characterizing in near real-time the aerodynamic particle size distributions from pharmaceutical inhalers. The proposed method is based on direct imaging of airborne particles followed by a particle-by-particle measurement of settling velocities using image analysis and particle tracking algorithms. Due to the simplicity of the principle of operation, this method has the potential of circumventing potential biases of current real-time particle analyzers (e.g. Time of Flight analysis), while offering a cost effective solution...
August 16, 2017: European Journal of Pharmaceutical Sciences
https://www.readbyqxmd.com/read/28820622/latent-growth-curve-modeling-of-non-injection-drug-use-and-condomless-sexual-behavior-from-ages-18-to-21-in-gay-bisexual-and-other-ymsm-the-p18-cohort-study
#2
Perry N Halkitis, Kristen Bub, Christopher B Stults, Francesca C Bates, Farzana Kapadia
BACKGROUND: HIV/AIDS continues to be a health disparity faced by sexual minority men, and is exacerbated by non-injection drug use. OBJECTIVES: We sought to delineate growth in non-injection drug use and condomless sex in a sample of racially and economically diverse of gay, bisexual, and other young men who have sex with men (YMSM) as they emerged into adulthood between the ages of 18 and 21 and who came of age in the post-HAART era. METHODS: Behavioral data on drug use and condomless sex, collected via a calendar based technique over 7 waves of a cohort study of 600 YMSM, were analyzed using latent growth curve modeling to document patterns of growth in these behaviors, their associations, and the extent to which patterns and associations are moderated by race/ethnicity and socioeconomic status...
August 18, 2017: Substance Use & Misuse
https://www.readbyqxmd.com/read/28818001/pulmonary-drug-delivery-system-newer-patents
#3
Shahid Sukhbir Kaur
Inhalational route for drug delivery and desired effects has been known since centuries. This lung-targeted therapy has benefited asthmatics and those with chronic respiratory problems. The technique has evolved greatly from crude pots and pipes to modern sophisticated drug-dispensing devices. This mode is effective, rapid and safe. Its outcome, however, is majorly determined by drug formulation, device structure and patient's coordinating skill. In spite of great advances in this field, more efforts are required to meet the unmet needs...
August 18, 2017: Pharmaceutical Patent Analyst
https://www.readbyqxmd.com/read/28802098/response-time-of-indirectly-accessed-gas-exchange-depends-on-measurement-method
#4
Jakub Rafl, Filip Kulhanek, Petr Kudrna, Vaclav Ort, Karel Roubik
Noninvasive techniques are routinely used for assessment of tissue effects of lung ventilation. However, comprehensive studies of the response time of the methods are scarce. The aim of this study was to compare the response time of noninvasive methods for monitoring of gas exchange to sudden changes in the composition of the inspired gas. A prospective experimental study with 16 healthy volunteers was conducted. A ventilation circuit was designed that enabled a fast change in the composition of the inspiratory gas mixture while allowing spontaneous breathing...
August 12, 2017: Biomedizinische Technik. Biomedical Engineering
https://www.readbyqxmd.com/read/28800360/prerequisites-for-a-dry-powder-inhaler-for-children-with-cystic-fibrosis
#5
Anne J Lexmond, Paul Hagedoorn, Henderik W Frijlink, Bart L Rottier, Anne H de Boer
Correct inhalation technique is essential for effective use of dry powder inhalers (DPIs), as their effectiveness largely depends on the patient's inhalation manoeuvre. Children are an especially challenging target population for DPI development due to the large variability in understanding and inspiratory capacities. We previously performed a study in which we determined the prerequisites for a paediatric DPI in a mostly healthy paediatric population, for which we used an empty test inhaler with variable internal airflow resistance and mouthpiece...
2017: PloS One
https://www.readbyqxmd.com/read/28799741/early-assessment-and-correlations-of-nanoclay-s-toxicity-to-their-physical-and-chemical-properties
#6
Alixandra Wagner, Andrew White, Todd A Stueckle, Derrick Banerjee, Konstantinos A Sierros, Yon Rojanasakul, Sushant Agarwal, Rakesh K Gupta, Cerasela Zoica Dinu
Nanoclays' functionalization with organic modifiers increases their individual barrier properties, thermal stability, and mechanical properties and allows for ease of implementation in food packaging materials or medical devices. Previous reports have showed that while organic modifiers integration between the layered mineral silicates leads to nanoclays with different degrees of hydrophobicity that become easily miscible in polymers, they could also pose possible effects at inhalation or ingestion routes of exposure...
August 11, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28797611/video-instruction-is-more-effective-than-written-instruction-in-improving-inhaler-technique
#7
Romil F Shah, Rakesh M Gupta
INTRODUCTION: Many patients with asthma use inhalers incorrectly. Better inhaler technique is associated with better asthma control. We tested the effectiveness of a computer-based video training solution versus traditional written instructions, both which may be used in a resource-limited setting, for teaching inhaler technique. We hypothesized that computer based training will provide a higher quality of instruction which will improve technique more effectively than written training...
August 7, 2017: Pulmonary Pharmacology & Therapeutics
https://www.readbyqxmd.com/read/28796753/comparative-study-of-radon-concentration-with-two-techniques-and-elemental-analysis-in-drinking-water-samples-of-the-jammu-district-jammu-and-kashmir-india
#8
Ajay Kumar, Manpreet Kaur, Rohit Mehra, Dinesh Kumar Sharma, Rosaline Mishra
The level of radon concentration has been assessed using the Advanced SMART RnDuo technique in 30 drinking water samples from Jammu district, Jammu and Kashmir, India. The water samples were collected from wells, hand pumps, submersible pumps, and stored waters. The randomly obtained 14 values of radon concentration in water sources using the SMART RnDuo technique have been compared and cross checked by a RAD7 device. A good positive correlation (R = 0.88) has been observed between the two techniques. The overall value of radon concentration in various water sources has ranged from 2...
August 7, 2017: Health Physics
https://www.readbyqxmd.com/read/28776686/contralateral-r1-and-r2-components-of-the-laryngeal-adductor-reflex-in-humans-under-general-anesthesia
#9
Catherine F Sinclair, Maria J Téllez, Oscar R Tapia, Sedat Ulkatan
OBJECTIVES: To demonstrate that under total intravenous general anesthesia (TIVA), the contralateral R1 (cRI) and contralateral R2 (cR2) components of the laryngeal adductor reflex (LAR) can be reliably elicited; to determine effects of topical anesthesia and inhalational anesthesia on the LAR; and to discuss how this technique may be utilized to continuously monitor the vagus nerve reflex arc. STUDY DESIGN: Case series. METHODS: Vocal fold mucosa was electrically stimulated via endotracheal tube surface-based electrodes to elicit a LAR...
August 4, 2017: Laryngoscope
https://www.readbyqxmd.com/read/28767453/ultrasonographic-assessment-of-bladder-volumes-in-children-undergoing-penile-surgery-does-the-type-of-anesthesia-matter
#10
Margaret Ekstein, Yuval Bar-Yosef, Jacob Ben-Chaim, Ron Flaishon, Avi A Weinbroum
BACKGROUND: There are scant data reporting postoperative ultrasonographically measured bladder volumes in children undergoing penile surgery. STUDY QUESTION: We studied the effect of various anesthesia techniques on return of micturition after penile surgery in children, using ultrasonographically measured bladder volumes. DATA SOURCES: Ultrasonographically measured postvoiding residual bladder volumes indexed to age-appropriate capacity, and time elapsed between the end of surgery and spontaneous voiding after pediatric circumcision, distal hypospadias repair, or repair of urethrocutaneous fistula, were studied...
July 17, 2017: American Journal of Therapeutics
https://www.readbyqxmd.com/read/28764257/a-randomized-comparison-between-video-demonstration-and-verbal-instruction-in-improving-rota-haler-technique-in-children-with-persistent-asthma-a-pilot-study
#11
Archana Arumugom, Venkatesh Chandrasekaran
INTRODUCTION: Inhalation therapy is the cornerstone in management of asthma. Failure to use the device properly is one of the factors incriminated in poor control of asthma. AIM: To compare the technique of rota haler use in children with persistent asthma immediately after receiving either verbal instruction or a video based demonstration and again at one month following intervention. MATERIALS AND METHODS: A total of 28 children, older than six years attending the childhood asthma clinic of our hospital, who were prescribed rota halers for the first time and who were technique naïve were enrolled into the study, after obtaining informed consent from the parents after meeting inclusion and exclusion criteria...
June 2017: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28763657/organochlorine-pesticides-in-the-indoor-air-of-a-theatre-and-museum-in-the-czech-republic-inhalation-exposure-and-cancer-risk
#12
Eva Holt, Ondřej Audy, Petra Booij, Lisa Melymuk, Roman Prokes, Jana Klánová
Organochlorine pesticides (OCPs) have been used to preserve the integrity of historical buildings or to protect collections of artefacts at potentially large volumes and often without detailed application records. Previous research has focused on the efficiency of remediation at contaminated sites (where identified), as well as improvement of preservation techniques and workplace health and safety. Few studies have assessed the human health risks from occupational exposure to OCPs in buildings of cultural and historical importance...
July 27, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28760669/an-immunoproteomic-approach-revealed-antigenic-proteins-enhancing-serodiagnosis-performance-of-bird-fancier-s-lung
#13
Adeline Rouzet, Gabriel Reboux, Jean-Charles Dalphin, Anne Gondouin, Paul De Vuyst, Thierry Balliau, Laurence Millon, Benoit Valot, Sandrine Roussel
BACKGROUND: Bird fancier's lung (BFL) caused by repeated inhalation of avian proteins is the most common form of hypersensitivity pneumonitis. However, the exact identification of proteins involved is unknown, and serological test use for diagnosis need to be standardized. The objectives of this study were (i) to identify antigenic proteins from pigeon droppings (ii) to provide information about their location in avian matrices and (iii) to produce them in recombinant proteins to evaluate their diagnostic performances...
July 28, 2017: Journal of Immunological Methods
https://www.readbyqxmd.com/read/28757256/proposed-algorithm-for-healthcare-professionals-based-on-product-characteristics-and-in-vitro-performances-in-different-use-conditions-using-formoterol-based-marketed-products-for-inhalation
#14
Nathalie Wauthoz, Ismaël Hennia, Bieke Dejaeger, Susana Ecenarro, Karim Amighi
Healthcare professionals require an easy algorithm for selecting the most appropriate inhalation product for each patient at the beginning of a treatment. As a case study, we selected five marketed formoterol products: Foradil(®) and Formagal(®), capsule-based dry powder inhalers (DPIs), Novolizer(®) Formoterol and Oxis(®), reservoir-based DPIs and Formoair(®), a pressurized metered dose inhaler. We generated an algorithm based on device properties (i.e. device handling, feedback and remaining dose/end of product indication) and in vitro aerodynamic performances (i) along the product use life in optimal conditions, (ii) at different airflows and (iii) after exposing pre-loaded doses to 40°C and 75% relative humidity for 4h...
July 27, 2017: International Journal of Pharmaceutics
https://www.readbyqxmd.com/read/28750556/the-quebec-respiratory-health-education-network-integrating-a-model-of-self-management-education-in-copd-primary-care
#15
Jean Bourbeau, Raquel Farias, Pei Zhi Li, Guylaine Gauthier, Livia Battisti, Valérie Chabot, Marie-France Beauchesne, Denis Villeneuve, Patricia Côté, Louis-Philippe Boulet
The objective of this study is to evaluate whether a chronic obstructive pulmonary disease (COPD) self-management education program with coaching of a case manager improves patient-related outcomes and leads to practice changes in primary care. COPD patients from six family medicine clinics (FMCs) participated in a 1-year educational program offered by trained case managers who focused on treatment adherence, inhaler techniques, smoking cessation, and the use of an action plan for exacerbations. Health-care utilization, health-related quality of life (HRQL), treatment adherence, inhaler technique, and COPD knowledge were assessed at each visit with validated questionnaires...
January 1, 2017: Chronic Respiratory Disease
https://www.readbyqxmd.com/read/28744110/confidence-in-correct-inhaler-technique-and-its-association-with-treatment-adherence-and-health-status-among-us-patients-with-chronic-obstructive-pulmonary-disease
#16
Alpesh N Amin, Vaidyanathan Ganapathy, Adam Roughley, Mark Small
BACKGROUND: Improper use of bronchodilators is associated with poor disease control, nonadherence to long-term therapy, and poor clinical outcomes. Our current understanding of factors associated with correct inhaler use and adherence is limited. We measured physician-and patient-reported confidence in device usage and associations with treatment adherence and COPD-related health status. METHODS: This was an analysis of a US observational, point-in-time survey of physicians and patients...
2017: Patient Preference and Adherence
https://www.readbyqxmd.com/read/28737431/the-analysis-of-pneumatic-atomization-of-newtonian-and-non-newtonian-fluids-for-different-medical-nebulizers
#17
Marek Ochowiak, Magdalena Matuszak, Sylwia Włodarczak
OBJECTIVE: The paper contains results of the experimental studies on atomization process of inhaled drugs and aqueous solutions of glycerol with aqueous solutions of glycerol-polyacrylamide (Rokrysol WF1) in pneumatic nebulizers. In experiments the different concentration of aqueous solutions of glycerol-polyacrylamide have been tested. In addition, the effect of nebulizer design on atomization process has been determined. The one of the main elements of medical pneumatic nebulizer is nebulizer cup...
July 24, 2017: Drug Development and Industrial Pharmacy
https://www.readbyqxmd.com/read/28735415/cfd-simulation-of-aerosol-delivery-to-a-human-lung-via-surface-acoustic-wave-nebulization
#18
Morteza Yousefi, Oveis Pourmehran, Mofid Gorji-Bandpy, Kiao Inthavong, Leslie Yeo, Jiyuan Tu
Administration of drug in the form of particles through inhalation is generally preferable in the treatment of respiratory disorders. Conventional inhalation therapy devices such as inhalers and nebulizers, nevertheless, suffer from low delivery efficiencies, wherein only a small fraction of the inhaled drug reaches the lower respiratory tract. This is primarily because these devices are not able to produce a sufficiently fine drug mist that has aerodynamic diameters on the order of a few microns. This study employs computational fluid dynamics to investigate the transport and deposition of the drug particles produced by a new aerosolization technique driven by surface acoustic waves (SAWs) into an in silico lung model geometrically reconstructed using computed tomography scanning...
July 22, 2017: Biomechanics and Modeling in Mechanobiology
https://www.readbyqxmd.com/read/28734855/effects-of-constant-rate-infusions-of-dexmedetomidine-or-mk-467-on-the-minimum-alveolar-concentration-of-sevoflurane-in-dogs
#19
Rachel C Hector, Marlis L Rezende, Khursheed R Mama, Eugene P Steffey, Heather K Knych, Ann M Hess, Juhana M Honkavaara, Marja R Raekallio, Outi M Vainio
OBJECTIVE: To determine the effects of low and high dose infusions of dexmedetomidine and a peripheral α2-adrenoceptor antagonist, MK-467, on sevoflurane minimum alveolar concentration (MAC) in dogs. STUDY DESIGN: Crossover experimental study. ANIMALS: Six healthy, adult Beagle dogs weighing 12.6±0.9 kg (mean±standard deviation). METHODS: Dogs were anesthetized with sevoflurane in oxygen. After a 60-minute instrumentation and equilibration period, the MAC of sevoflurane was determined in triplicate using the tail clamp technique...
March 4, 2017: Veterinary Anaesthesia and Analgesia
https://www.readbyqxmd.com/read/28732842/misuse-and-or-treatment-delivery-failure-of-inhalers-among-patients-with-asthma-or-copd-a-review-and-recommendations-for-the-conduct-of-future-research
#20
REVIEW
James Mahon, Anita Fitzgerald, Julie Glanville, Richard Dekhuijzen, Josefine Glatte, Sascha Glanemann, Saku Torvinen
BACKGROUND: Asthma and chronic obstructive pulmonary disease (COPD) are widespread chronic conditions with medication frequently delivered by inhalers. These can be challenging to use correctly, but the scale of misuse and the specific aspects of failure are unclear. METHODS: We used systematic review methods to search 9 databases in May 2015 to identify and review studies that assessed adults (18 years or older) with asthma or COPD using inhalers of various types including pressurised metered dose inhalers (pMDIs), dry powder inhalers and the Respimat inhaler...
August 2017: Respiratory Medicine
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