Search results for "HOLDING CHAMBER"

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A simple method of bronchoprovocation using a valved holding chamber.

2004

This study was undertaken to ascertain whether the use of a valved holding chamber (VHC) during bronchial provocation testing might increase lung deposition and repeatability of the test relative to the tidal breathing method. The 2-min tidal breathing results were compared to five inhalations from a VHC device in patients using the Pari-provoII nebulizer (MMD = 2.1mkm). Lung and mouth deposition, losses though the exhaled air and losses before aerosol delivery to the patient's mouth were measured in patients using a radiolabeled 99Tc-DTPA solution and gamma camera. The study revealed that lung deposition was 67% with the VHC method, and losses with exhaled air were 29% of the inhaled amoun…

Pulmonary and Respiratory Medicinemedicine.medical_specialtyBronchial Provocation TestsTidal VolumeMedicineHumansPharmacology (medical)In patientRadionuclide ImagingLungAerosolsLungbusiness.industryNebulizers and VaporizersRepeatabilityrespiratory systemHOLDING CHAMBERrespiratory tract diseasesSurgeryAerosolNebulizermedicine.anatomical_structureBronchial provocationTechnetium Tc 99m PentetateRadiopharmaceuticalsbusinessNuclear medicineDeposition (chemistry)Journal of aerosol medicine : the official journal of the International Society for Aerosols in Medicine
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Spacers and Valved Holding Chambers—The Risk of Switching to Different Chambers

2020

© 2020 The Authors. Published by Elsevier Inc. on behalf of the American Academy of Allergy, Asthma & Immunology. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/)

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