Aerosol Plumes of Inhalers Used in COPD

Abstract Introduction The selection of inhaler device is of critical importance in chronic obstructive pulmonary disease (COPD) as the interaction between a patient’s inhalation profile and the aerosol characteristics of an inhaler can affect drug delivery and lung deposition. This study assessed the in vitro aerosol characteristics of inhaler devices approved for the treatment of COPD, including a soft mist inhaler (SMI), pressurized metered-dose inhalers (pMDIs), and dry powder inhalers (DPIs). Methods High-speed video recording was used to visualize and measure aerosol velocity and spray duration for nine different inhalers (one SMI, three pMDIs, and five DPIs), each containing dual or triple fixed-dose combinations of long-acting muscarinic receptor antagonists and long-acting β2-agonists, with or without an inhaled corticosteroid. Measurements were taken in triplicate at experimental flow rates of 30, 60, and 90 l/min. Optimal flow rates were defined based on pharmacopoeial testing requirements: 30 l/min for pMDIs and SMIs, and the rate achieving a 4-kPa pressure drop against internal inhaler resistance for DPIs. Comparison of aerosol plumes was based on the experimental flow rates closest to the optimal flow rates. Results The Respimat SMI had the slowest plume velocity (0.99 m/s) and longest spray duration (1447 ms) compared with pMDIs (velocity: 3.65–5.09 m/s; duration: 227–270 ms) and DPIs (velocity: 1.43–4.60 m/s; duration: 60–757 ms). With increasing flow rates, SMI aerosol duration was unaffected, but velocity increased (maximum 2.63 m/s), pMDI aerosol velocity and duration were unaffected, and DPI aerosol velocity tended to increase, with a more variable impact on duration. Conclusions Aerosol characteristics (velocity and duration of aerosol plume) vary by inhaler type. Plume velocity was lower and spray duration longer for the SMI compared with pMDIs and DPIs. Increasing experimental flow rate was associated with faster plume velocity for DPIs and the SMI, with no or variable impact on plume duration, whereas pMDI aerosol velocity and duration were unaffected by increasing flow rate. Ausführliche Beschreibung

Gespeichert in:

Autor*in:	Herbert Wachtel [verfasserIn] Rachel Emerson-Stadler [verfasserIn] Peter Langguth [verfasserIn] Jens M. Hohlfeld [verfasserIn] Jill Ohar [verfasserIn]

Format:	E-Artikel
Sprache:	Englisch

Erschienen:	2024

Schlagwörter:	Chronic obstructive pulmonary disease Dry powder inhaler Pressurized metered-dose inhaler Soft mist inhaler Inhalation therapy Inhaler

Übergeordnetes Werk:	In: Pulmonary Therapy - Adis, Springer Healthcare, 2016, 10(2024), 1, Seite 109-122
Übergeordnetes Werk:	volume:10 ; year:2024 ; number:1 ; pages:109-122

Links:	Link aufrufen Link aufrufen Link aufrufen Journal toc Journal toc

DOI / URN:	10.1007/s41030-023-00249-5

Katalog-ID:	DOAJ091169607

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520			\|a Abstract Introduction The selection of inhaler device is of critical importance in chronic obstructive pulmonary disease (COPD) as the interaction between a patient’s inhalation profile and the aerosol characteristics of an inhaler can affect drug delivery and lung deposition. This study assessed the in vitro aerosol characteristics of inhaler devices approved for the treatment of COPD, including a soft mist inhaler (SMI), pressurized metered-dose inhalers (pMDIs), and dry powder inhalers (DPIs). Methods High-speed video recording was used to visualize and measure aerosol velocity and spray duration for nine different inhalers (one SMI, three pMDIs, and five DPIs), each containing dual or triple fixed-dose combinations of long-acting muscarinic receptor antagonists and long-acting β2-agonists, with or without an inhaled corticosteroid. Measurements were taken in triplicate at experimental flow rates of 30, 60, and 90 l/min. Optimal flow rates were defined based on pharmacopoeial testing requirements: 30 l/min for pMDIs and SMIs, and the rate achieving a 4-kPa pressure drop against internal inhaler resistance for DPIs. Comparison of aerosol plumes was based on the experimental flow rates closest to the optimal flow rates. Results The Respimat SMI had the slowest plume velocity (0.99 m/s) and longest spray duration (1447 ms) compared with pMDIs (velocity: 3.65–5.09 m/s; duration: 227–270 ms) and DPIs (velocity: 1.43–4.60 m/s; duration: 60–757 ms). With increasing flow rates, SMI aerosol duration was unaffected, but velocity increased (maximum 2.63 m/s), pMDI aerosol velocity and duration were unaffected, and DPI aerosol velocity tended to increase, with a more variable impact on duration. Conclusions Aerosol characteristics (velocity and duration of aerosol plume) vary by inhaler type. Plume velocity was lower and spray duration longer for the SMI compared with pMDIs and DPIs. Increasing experimental flow rate was associated with faster plume velocity for DPIs and the SMI, with no or variable impact on plume duration, whereas pMDI aerosol velocity and duration were unaffected by increasing flow rate.
650		4	\|a Chronic obstructive pulmonary disease
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allfields	10.1007/s41030-023-00249-5 doi (DE-627)DOAJ091169607 (DE-599)DOAJ832681727c5c44aeb48ec95bd5e0d15e DE-627 ger DE-627 rakwb eng RC705-779 Herbert Wachtel verfasserin aut Aerosol Plumes of Inhalers Used in COPD 2024 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Abstract Introduction The selection of inhaler device is of critical importance in chronic obstructive pulmonary disease (COPD) as the interaction between a patient’s inhalation profile and the aerosol characteristics of an inhaler can affect drug delivery and lung deposition. This study assessed the in vitro aerosol characteristics of inhaler devices approved for the treatment of COPD, including a soft mist inhaler (SMI), pressurized metered-dose inhalers (pMDIs), and dry powder inhalers (DPIs). Methods High-speed video recording was used to visualize and measure aerosol velocity and spray duration for nine different inhalers (one SMI, three pMDIs, and five DPIs), each containing dual or triple fixed-dose combinations of long-acting muscarinic receptor antagonists and long-acting β2-agonists, with or without an inhaled corticosteroid. Measurements were taken in triplicate at experimental flow rates of 30, 60, and 90 l/min. Optimal flow rates were defined based on pharmacopoeial testing requirements: 30 l/min for pMDIs and SMIs, and the rate achieving a 4-kPa pressure drop against internal inhaler resistance for DPIs. Comparison of aerosol plumes was based on the experimental flow rates closest to the optimal flow rates. Results The Respimat SMI had the slowest plume velocity (0.99 m/s) and longest spray duration (1447 ms) compared with pMDIs (velocity: 3.65–5.09 m/s; duration: 227–270 ms) and DPIs (velocity: 1.43–4.60 m/s; duration: 60–757 ms). With increasing flow rates, SMI aerosol duration was unaffected, but velocity increased (maximum 2.63 m/s), pMDI aerosol velocity and duration were unaffected, and DPI aerosol velocity tended to increase, with a more variable impact on duration. Conclusions Aerosol characteristics (velocity and duration of aerosol plume) vary by inhaler type. Plume velocity was lower and spray duration longer for the SMI compared with pMDIs and DPIs. Increasing experimental flow rate was associated with faster plume velocity for DPIs and the SMI, with no or variable impact on plume duration, whereas pMDI aerosol velocity and duration were unaffected by increasing flow rate. Chronic obstructive pulmonary disease Dry powder inhaler Pressurized metered-dose inhaler Soft mist inhaler Inhalation therapy Inhaler Diseases of the respiratory system Rachel Emerson-Stadler verfasserin aut Peter Langguth verfasserin aut Jens M. Hohlfeld verfasserin aut Jill Ohar verfasserin aut In Pulmonary Therapy Adis, Springer Healthcare, 2016 10(2024), 1, Seite 109-122 (DE-627)843644451 (DE-600)2842522-4 23641746 nnns volume:10 year:2024 number:1 pages:109-122 https://doi.org/10.1007/s41030-023-00249-5 kostenfrei https://doaj.org/article/832681727c5c44aeb48ec95bd5e0d15e kostenfrei https://doi.org/10.1007/s41030-023-00249-5 kostenfrei https://doaj.org/toc/2364-1754 Journal toc kostenfrei https://doaj.org/toc/2364-1746 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_73 GBV_ILN_74 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_206 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_602 GBV_ILN_2005 GBV_ILN_2009 GBV_ILN_2014 GBV_ILN_2055 GBV_ILN_2111 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 10 2024 1 109-122
spelling	10.1007/s41030-023-00249-5 doi (DE-627)DOAJ091169607 (DE-599)DOAJ832681727c5c44aeb48ec95bd5e0d15e DE-627 ger DE-627 rakwb eng RC705-779 Herbert Wachtel verfasserin aut Aerosol Plumes of Inhalers Used in COPD 2024 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Abstract Introduction The selection of inhaler device is of critical importance in chronic obstructive pulmonary disease (COPD) as the interaction between a patient’s inhalation profile and the aerosol characteristics of an inhaler can affect drug delivery and lung deposition. This study assessed the in vitro aerosol characteristics of inhaler devices approved for the treatment of COPD, including a soft mist inhaler (SMI), pressurized metered-dose inhalers (pMDIs), and dry powder inhalers (DPIs). Methods High-speed video recording was used to visualize and measure aerosol velocity and spray duration for nine different inhalers (one SMI, three pMDIs, and five DPIs), each containing dual or triple fixed-dose combinations of long-acting muscarinic receptor antagonists and long-acting β2-agonists, with or without an inhaled corticosteroid. Measurements were taken in triplicate at experimental flow rates of 30, 60, and 90 l/min. Optimal flow rates were defined based on pharmacopoeial testing requirements: 30 l/min for pMDIs and SMIs, and the rate achieving a 4-kPa pressure drop against internal inhaler resistance for DPIs. Comparison of aerosol plumes was based on the experimental flow rates closest to the optimal flow rates. Results The Respimat SMI had the slowest plume velocity (0.99 m/s) and longest spray duration (1447 ms) compared with pMDIs (velocity: 3.65–5.09 m/s; duration: 227–270 ms) and DPIs (velocity: 1.43–4.60 m/s; duration: 60–757 ms). With increasing flow rates, SMI aerosol duration was unaffected, but velocity increased (maximum 2.63 m/s), pMDI aerosol velocity and duration were unaffected, and DPI aerosol velocity tended to increase, with a more variable impact on duration. Conclusions Aerosol characteristics (velocity and duration of aerosol plume) vary by inhaler type. Plume velocity was lower and spray duration longer for the SMI compared with pMDIs and DPIs. Increasing experimental flow rate was associated with faster plume velocity for DPIs and the SMI, with no or variable impact on plume duration, whereas pMDI aerosol velocity and duration were unaffected by increasing flow rate. Chronic obstructive pulmonary disease Dry powder inhaler Pressurized metered-dose inhaler Soft mist inhaler Inhalation therapy Inhaler Diseases of the respiratory system Rachel Emerson-Stadler verfasserin aut Peter Langguth verfasserin aut Jens M. Hohlfeld verfasserin aut Jill Ohar verfasserin aut In Pulmonary Therapy Adis, Springer Healthcare, 2016 10(2024), 1, Seite 109-122 (DE-627)843644451 (DE-600)2842522-4 23641746 nnns volume:10 year:2024 number:1 pages:109-122 https://doi.org/10.1007/s41030-023-00249-5 kostenfrei https://doaj.org/article/832681727c5c44aeb48ec95bd5e0d15e kostenfrei https://doi.org/10.1007/s41030-023-00249-5 kostenfrei https://doaj.org/toc/2364-1754 Journal toc kostenfrei https://doaj.org/toc/2364-1746 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_73 GBV_ILN_74 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_206 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_602 GBV_ILN_2005 GBV_ILN_2009 GBV_ILN_2014 GBV_ILN_2055 GBV_ILN_2111 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 10 2024 1 109-122
allfields_unstemmed	10.1007/s41030-023-00249-5 doi (DE-627)DOAJ091169607 (DE-599)DOAJ832681727c5c44aeb48ec95bd5e0d15e DE-627 ger DE-627 rakwb eng RC705-779 Herbert Wachtel verfasserin aut Aerosol Plumes of Inhalers Used in COPD 2024 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Abstract Introduction The selection of inhaler device is of critical importance in chronic obstructive pulmonary disease (COPD) as the interaction between a patient’s inhalation profile and the aerosol characteristics of an inhaler can affect drug delivery and lung deposition. This study assessed the in vitro aerosol characteristics of inhaler devices approved for the treatment of COPD, including a soft mist inhaler (SMI), pressurized metered-dose inhalers (pMDIs), and dry powder inhalers (DPIs). Methods High-speed video recording was used to visualize and measure aerosol velocity and spray duration for nine different inhalers (one SMI, three pMDIs, and five DPIs), each containing dual or triple fixed-dose combinations of long-acting muscarinic receptor antagonists and long-acting β2-agonists, with or without an inhaled corticosteroid. Measurements were taken in triplicate at experimental flow rates of 30, 60, and 90 l/min. Optimal flow rates were defined based on pharmacopoeial testing requirements: 30 l/min for pMDIs and SMIs, and the rate achieving a 4-kPa pressure drop against internal inhaler resistance for DPIs. Comparison of aerosol plumes was based on the experimental flow rates closest to the optimal flow rates. Results The Respimat SMI had the slowest plume velocity (0.99 m/s) and longest spray duration (1447 ms) compared with pMDIs (velocity: 3.65–5.09 m/s; duration: 227–270 ms) and DPIs (velocity: 1.43–4.60 m/s; duration: 60–757 ms). With increasing flow rates, SMI aerosol duration was unaffected, but velocity increased (maximum 2.63 m/s), pMDI aerosol velocity and duration were unaffected, and DPI aerosol velocity tended to increase, with a more variable impact on duration. Conclusions Aerosol characteristics (velocity and duration of aerosol plume) vary by inhaler type. Plume velocity was lower and spray duration longer for the SMI compared with pMDIs and DPIs. Increasing experimental flow rate was associated with faster plume velocity for DPIs and the SMI, with no or variable impact on plume duration, whereas pMDI aerosol velocity and duration were unaffected by increasing flow rate. Chronic obstructive pulmonary disease Dry powder inhaler Pressurized metered-dose inhaler Soft mist inhaler Inhalation therapy Inhaler Diseases of the respiratory system Rachel Emerson-Stadler verfasserin aut Peter Langguth verfasserin aut Jens M. Hohlfeld verfasserin aut Jill Ohar verfasserin aut In Pulmonary Therapy Adis, Springer Healthcare, 2016 10(2024), 1, Seite 109-122 (DE-627)843644451 (DE-600)2842522-4 23641746 nnns volume:10 year:2024 number:1 pages:109-122 https://doi.org/10.1007/s41030-023-00249-5 kostenfrei https://doaj.org/article/832681727c5c44aeb48ec95bd5e0d15e kostenfrei https://doi.org/10.1007/s41030-023-00249-5 kostenfrei https://doaj.org/toc/2364-1754 Journal toc kostenfrei https://doaj.org/toc/2364-1746 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_73 GBV_ILN_74 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_206 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_602 GBV_ILN_2005 GBV_ILN_2009 GBV_ILN_2014 GBV_ILN_2055 GBV_ILN_2111 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 10 2024 1 109-122
allfieldsGer	10.1007/s41030-023-00249-5 doi (DE-627)DOAJ091169607 (DE-599)DOAJ832681727c5c44aeb48ec95bd5e0d15e DE-627 ger DE-627 rakwb eng RC705-779 Herbert Wachtel verfasserin aut Aerosol Plumes of Inhalers Used in COPD 2024 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Abstract Introduction The selection of inhaler device is of critical importance in chronic obstructive pulmonary disease (COPD) as the interaction between a patient’s inhalation profile and the aerosol characteristics of an inhaler can affect drug delivery and lung deposition. This study assessed the in vitro aerosol characteristics of inhaler devices approved for the treatment of COPD, including a soft mist inhaler (SMI), pressurized metered-dose inhalers (pMDIs), and dry powder inhalers (DPIs). Methods High-speed video recording was used to visualize and measure aerosol velocity and spray duration for nine different inhalers (one SMI, three pMDIs, and five DPIs), each containing dual or triple fixed-dose combinations of long-acting muscarinic receptor antagonists and long-acting β2-agonists, with or without an inhaled corticosteroid. Measurements were taken in triplicate at experimental flow rates of 30, 60, and 90 l/min. Optimal flow rates were defined based on pharmacopoeial testing requirements: 30 l/min for pMDIs and SMIs, and the rate achieving a 4-kPa pressure drop against internal inhaler resistance for DPIs. Comparison of aerosol plumes was based on the experimental flow rates closest to the optimal flow rates. Results The Respimat SMI had the slowest plume velocity (0.99 m/s) and longest spray duration (1447 ms) compared with pMDIs (velocity: 3.65–5.09 m/s; duration: 227–270 ms) and DPIs (velocity: 1.43–4.60 m/s; duration: 60–757 ms). With increasing flow rates, SMI aerosol duration was unaffected, but velocity increased (maximum 2.63 m/s), pMDI aerosol velocity and duration were unaffected, and DPI aerosol velocity tended to increase, with a more variable impact on duration. Conclusions Aerosol characteristics (velocity and duration of aerosol plume) vary by inhaler type. Plume velocity was lower and spray duration longer for the SMI compared with pMDIs and DPIs. Increasing experimental flow rate was associated with faster plume velocity for DPIs and the SMI, with no or variable impact on plume duration, whereas pMDI aerosol velocity and duration were unaffected by increasing flow rate. Chronic obstructive pulmonary disease Dry powder inhaler Pressurized metered-dose inhaler Soft mist inhaler Inhalation therapy Inhaler Diseases of the respiratory system Rachel Emerson-Stadler verfasserin aut Peter Langguth verfasserin aut Jens M. Hohlfeld verfasserin aut Jill Ohar verfasserin aut In Pulmonary Therapy Adis, Springer Healthcare, 2016 10(2024), 1, Seite 109-122 (DE-627)843644451 (DE-600)2842522-4 23641746 nnns volume:10 year:2024 number:1 pages:109-122 https://doi.org/10.1007/s41030-023-00249-5 kostenfrei https://doaj.org/article/832681727c5c44aeb48ec95bd5e0d15e kostenfrei https://doi.org/10.1007/s41030-023-00249-5 kostenfrei https://doaj.org/toc/2364-1754 Journal toc kostenfrei https://doaj.org/toc/2364-1746 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_73 GBV_ILN_74 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_206 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_602 GBV_ILN_2005 GBV_ILN_2009 GBV_ILN_2014 GBV_ILN_2055 GBV_ILN_2111 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 10 2024 1 109-122
allfieldsSound	10.1007/s41030-023-00249-5 doi (DE-627)DOAJ091169607 (DE-599)DOAJ832681727c5c44aeb48ec95bd5e0d15e DE-627 ger DE-627 rakwb eng RC705-779 Herbert Wachtel verfasserin aut Aerosol Plumes of Inhalers Used in COPD 2024 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Abstract Introduction The selection of inhaler device is of critical importance in chronic obstructive pulmonary disease (COPD) as the interaction between a patient’s inhalation profile and the aerosol characteristics of an inhaler can affect drug delivery and lung deposition. This study assessed the in vitro aerosol characteristics of inhaler devices approved for the treatment of COPD, including a soft mist inhaler (SMI), pressurized metered-dose inhalers (pMDIs), and dry powder inhalers (DPIs). Methods High-speed video recording was used to visualize and measure aerosol velocity and spray duration for nine different inhalers (one SMI, three pMDIs, and five DPIs), each containing dual or triple fixed-dose combinations of long-acting muscarinic receptor antagonists and long-acting β2-agonists, with or without an inhaled corticosteroid. Measurements were taken in triplicate at experimental flow rates of 30, 60, and 90 l/min. Optimal flow rates were defined based on pharmacopoeial testing requirements: 30 l/min for pMDIs and SMIs, and the rate achieving a 4-kPa pressure drop against internal inhaler resistance for DPIs. Comparison of aerosol plumes was based on the experimental flow rates closest to the optimal flow rates. Results The Respimat SMI had the slowest plume velocity (0.99 m/s) and longest spray duration (1447 ms) compared with pMDIs (velocity: 3.65–5.09 m/s; duration: 227–270 ms) and DPIs (velocity: 1.43–4.60 m/s; duration: 60–757 ms). With increasing flow rates, SMI aerosol duration was unaffected, but velocity increased (maximum 2.63 m/s), pMDI aerosol velocity and duration were unaffected, and DPI aerosol velocity tended to increase, with a more variable impact on duration. Conclusions Aerosol characteristics (velocity and duration of aerosol plume) vary by inhaler type. Plume velocity was lower and spray duration longer for the SMI compared with pMDIs and DPIs. Increasing experimental flow rate was associated with faster plume velocity for DPIs and the SMI, with no or variable impact on plume duration, whereas pMDI aerosol velocity and duration were unaffected by increasing flow rate. Chronic obstructive pulmonary disease Dry powder inhaler Pressurized metered-dose inhaler Soft mist inhaler Inhalation therapy Inhaler Diseases of the respiratory system Rachel Emerson-Stadler verfasserin aut Peter Langguth verfasserin aut Jens M. Hohlfeld verfasserin aut Jill Ohar verfasserin aut In Pulmonary Therapy Adis, Springer Healthcare, 2016 10(2024), 1, Seite 109-122 (DE-627)843644451 (DE-600)2842522-4 23641746 nnns volume:10 year:2024 number:1 pages:109-122 https://doi.org/10.1007/s41030-023-00249-5 kostenfrei https://doaj.org/article/832681727c5c44aeb48ec95bd5e0d15e kostenfrei https://doi.org/10.1007/s41030-023-00249-5 kostenfrei https://doaj.org/toc/2364-1754 Journal toc kostenfrei https://doaj.org/toc/2364-1746 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_73 GBV_ILN_74 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_206 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_602 GBV_ILN_2005 GBV_ILN_2009 GBV_ILN_2014 GBV_ILN_2055 GBV_ILN_2111 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 10 2024 1 109-122
language	English
source	In Pulmonary Therapy 10(2024), 1, Seite 109-122 volume:10 year:2024 number:1 pages:109-122
sourceStr	In Pulmonary Therapy 10(2024), 1, Seite 109-122 volume:10 year:2024 number:1 pages:109-122
format_phy_str_mv	Article
institution	findex.gbv.de
topic_facet	Chronic obstructive pulmonary disease Dry powder inhaler Pressurized metered-dose inhaler Soft mist inhaler Inhalation therapy Inhaler Diseases of the respiratory system
isfreeaccess_bool	true
container_title	Pulmonary Therapy
authorswithroles_txt_mv	Herbert Wachtel @@aut@@ Rachel Emerson-Stadler @@aut@@ Peter Langguth @@aut@@ Jens M. Hohlfeld @@aut@@ Jill Ohar @@aut@@
publishDateDaySort_date	2024-01-01T00:00:00Z
hierarchy_top_id	843644451
id	DOAJ091169607
language_de	englisch
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This study assessed the in vitro aerosol characteristics of inhaler devices approved for the treatment of COPD, including a soft mist inhaler (SMI), pressurized metered-dose inhalers (pMDIs), and dry powder inhalers (DPIs). Methods High-speed video recording was used to visualize and measure aerosol velocity and spray duration for nine different inhalers (one SMI, three pMDIs, and five DPIs), each containing dual or triple fixed-dose combinations of long-acting muscarinic receptor antagonists and long-acting β2-agonists, with or without an inhaled corticosteroid. Measurements were taken in triplicate at experimental flow rates of 30, 60, and 90 l/min. Optimal flow rates were defined based on pharmacopoeial testing requirements: 30 l/min for pMDIs and SMIs, and the rate achieving a 4-kPa pressure drop against internal inhaler resistance for DPIs. Comparison of aerosol plumes was based on the experimental flow rates closest to the optimal flow rates. Results The Respimat SMI had the slowest plume velocity (0.99 m/s) and longest spray duration (1447 ms) compared with pMDIs (velocity: 3.65–5.09 m/s; duration: 227–270 ms) and DPIs (velocity: 1.43–4.60 m/s; duration: 60–757 ms). With increasing flow rates, SMI aerosol duration was unaffected, but velocity increased (maximum 2.63 m/s), pMDI aerosol velocity and duration were unaffected, and DPI aerosol velocity tended to increase, with a more variable impact on duration. Conclusions Aerosol characteristics (velocity and duration of aerosol plume) vary by inhaler type. Plume velocity was lower and spray duration longer for the SMI compared with pMDIs and DPIs. 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callnumber-first	R - Medicine
author	Herbert Wachtel
spellingShingle	Herbert Wachtel misc RC705-779 misc Chronic obstructive pulmonary disease misc Dry powder inhaler misc Pressurized metered-dose inhaler misc Soft mist inhaler misc Inhalation therapy misc Inhaler misc Diseases of the respiratory system Aerosol Plumes of Inhalers Used in COPD
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topic_title	RC705-779 Aerosol Plumes of Inhalers Used in COPD Chronic obstructive pulmonary disease Dry powder inhaler Pressurized metered-dose inhaler Soft mist inhaler Inhalation therapy Inhaler
topic	misc RC705-779 misc Chronic obstructive pulmonary disease misc Dry powder inhaler misc Pressurized metered-dose inhaler misc Soft mist inhaler misc Inhalation therapy misc Inhaler misc Diseases of the respiratory system
topic_unstemmed	misc RC705-779 misc Chronic obstructive pulmonary disease misc Dry powder inhaler misc Pressurized metered-dose inhaler misc Soft mist inhaler misc Inhalation therapy misc Inhaler misc Diseases of the respiratory system
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title	Aerosol Plumes of Inhalers Used in COPD
ctrlnum	(DE-627)DOAJ091169607 (DE-599)DOAJ832681727c5c44aeb48ec95bd5e0d15e
title_full	Aerosol Plumes of Inhalers Used in COPD
author_sort	Herbert Wachtel
journal	Pulmonary Therapy
journalStr	Pulmonary Therapy
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container_start_page	109
author_browse	Herbert Wachtel Rachel Emerson-Stadler Peter Langguth Jens M. Hohlfeld Jill Ohar
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doi_str_mv	10.1007/s41030-023-00249-5
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title_sort	aerosol plumes of inhalers used in copd
callnumber	RC705-779
title_auth	Aerosol Plumes of Inhalers Used in COPD
abstract	Abstract Introduction The selection of inhaler device is of critical importance in chronic obstructive pulmonary disease (COPD) as the interaction between a patient’s inhalation profile and the aerosol characteristics of an inhaler can affect drug delivery and lung deposition. This study assessed the in vitro aerosol characteristics of inhaler devices approved for the treatment of COPD, including a soft mist inhaler (SMI), pressurized metered-dose inhalers (pMDIs), and dry powder inhalers (DPIs). Methods High-speed video recording was used to visualize and measure aerosol velocity and spray duration for nine different inhalers (one SMI, three pMDIs, and five DPIs), each containing dual or triple fixed-dose combinations of long-acting muscarinic receptor antagonists and long-acting β2-agonists, with or without an inhaled corticosteroid. Measurements were taken in triplicate at experimental flow rates of 30, 60, and 90 l/min. Optimal flow rates were defined based on pharmacopoeial testing requirements: 30 l/min for pMDIs and SMIs, and the rate achieving a 4-kPa pressure drop against internal inhaler resistance for DPIs. Comparison of aerosol plumes was based on the experimental flow rates closest to the optimal flow rates. Results The Respimat SMI had the slowest plume velocity (0.99 m/s) and longest spray duration (1447 ms) compared with pMDIs (velocity: 3.65–5.09 m/s; duration: 227–270 ms) and DPIs (velocity: 1.43–4.60 m/s; duration: 60–757 ms). With increasing flow rates, SMI aerosol duration was unaffected, but velocity increased (maximum 2.63 m/s), pMDI aerosol velocity and duration were unaffected, and DPI aerosol velocity tended to increase, with a more variable impact on duration. Conclusions Aerosol characteristics (velocity and duration of aerosol plume) vary by inhaler type. Plume velocity was lower and spray duration longer for the SMI compared with pMDIs and DPIs. Increasing experimental flow rate was associated with faster plume velocity for DPIs and the SMI, with no or variable impact on plume duration, whereas pMDI aerosol velocity and duration were unaffected by increasing flow rate.
abstractGer	Abstract Introduction The selection of inhaler device is of critical importance in chronic obstructive pulmonary disease (COPD) as the interaction between a patient’s inhalation profile and the aerosol characteristics of an inhaler can affect drug delivery and lung deposition. This study assessed the in vitro aerosol characteristics of inhaler devices approved for the treatment of COPD, including a soft mist inhaler (SMI), pressurized metered-dose inhalers (pMDIs), and dry powder inhalers (DPIs). Methods High-speed video recording was used to visualize and measure aerosol velocity and spray duration for nine different inhalers (one SMI, three pMDIs, and five DPIs), each containing dual or triple fixed-dose combinations of long-acting muscarinic receptor antagonists and long-acting β2-agonists, with or without an inhaled corticosteroid. Measurements were taken in triplicate at experimental flow rates of 30, 60, and 90 l/min. Optimal flow rates were defined based on pharmacopoeial testing requirements: 30 l/min for pMDIs and SMIs, and the rate achieving a 4-kPa pressure drop against internal inhaler resistance for DPIs. Comparison of aerosol plumes was based on the experimental flow rates closest to the optimal flow rates. Results The Respimat SMI had the slowest plume velocity (0.99 m/s) and longest spray duration (1447 ms) compared with pMDIs (velocity: 3.65–5.09 m/s; duration: 227–270 ms) and DPIs (velocity: 1.43–4.60 m/s; duration: 60–757 ms). With increasing flow rates, SMI aerosol duration was unaffected, but velocity increased (maximum 2.63 m/s), pMDI aerosol velocity and duration were unaffected, and DPI aerosol velocity tended to increase, with a more variable impact on duration. Conclusions Aerosol characteristics (velocity and duration of aerosol plume) vary by inhaler type. Plume velocity was lower and spray duration longer for the SMI compared with pMDIs and DPIs. Increasing experimental flow rate was associated with faster plume velocity for DPIs and the SMI, with no or variable impact on plume duration, whereas pMDI aerosol velocity and duration were unaffected by increasing flow rate.
abstract_unstemmed	Abstract Introduction The selection of inhaler device is of critical importance in chronic obstructive pulmonary disease (COPD) as the interaction between a patient’s inhalation profile and the aerosol characteristics of an inhaler can affect drug delivery and lung deposition. This study assessed the in vitro aerosol characteristics of inhaler devices approved for the treatment of COPD, including a soft mist inhaler (SMI), pressurized metered-dose inhalers (pMDIs), and dry powder inhalers (DPIs). Methods High-speed video recording was used to visualize and measure aerosol velocity and spray duration for nine different inhalers (one SMI, three pMDIs, and five DPIs), each containing dual or triple fixed-dose combinations of long-acting muscarinic receptor antagonists and long-acting β2-agonists, with or without an inhaled corticosteroid. Measurements were taken in triplicate at experimental flow rates of 30, 60, and 90 l/min. Optimal flow rates were defined based on pharmacopoeial testing requirements: 30 l/min for pMDIs and SMIs, and the rate achieving a 4-kPa pressure drop against internal inhaler resistance for DPIs. Comparison of aerosol plumes was based on the experimental flow rates closest to the optimal flow rates. Results The Respimat SMI had the slowest plume velocity (0.99 m/s) and longest spray duration (1447 ms) compared with pMDIs (velocity: 3.65–5.09 m/s; duration: 227–270 ms) and DPIs (velocity: 1.43–4.60 m/s; duration: 60–757 ms). With increasing flow rates, SMI aerosol duration was unaffected, but velocity increased (maximum 2.63 m/s), pMDI aerosol velocity and duration were unaffected, and DPI aerosol velocity tended to increase, with a more variable impact on duration. Conclusions Aerosol characteristics (velocity and duration of aerosol plume) vary by inhaler type. Plume velocity was lower and spray duration longer for the SMI compared with pMDIs and DPIs. Increasing experimental flow rate was associated with faster plume velocity for DPIs and the SMI, with no or variable impact on plume duration, whereas pMDI aerosol velocity and duration were unaffected by increasing flow rate.
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title_short	Aerosol Plumes of Inhalers Used in COPD
url	https://doi.org/10.1007/s41030-023-00249-5 https://doaj.org/article/832681727c5c44aeb48ec95bd5e0d15e https://doaj.org/toc/2364-1754 https://doaj.org/toc/2364-1746
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author2	Rachel Emerson-Stadler Peter Langguth Jens M. Hohlfeld Jill Ohar
author2Str	Rachel Emerson-Stadler Peter Langguth Jens M. Hohlfeld Jill Ohar
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up_date	2024-07-03T18:50:31.910Z
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