Inhaler Technique of Elderly Patients: Comparison of Metered-dose Inhalers and Large Volume Spacer Devices

1995 ◽  
Vol 24 (3) ◽  
pp. 190-192 ◽  
Author(s):  
M. J. CONNOLLY
Keyword(s):  
Elderly Patients ◽  
Large Volume ◽  
Inhaler Technique ◽  
Metered Dose Inhalers ◽  
Metered Dose

scholarly journals Factors related to the incorrect use of inhalers by asthma patients

2014 ◽  
Vol 40 (1) ◽  
pp. 13-20 ◽  
Author(s):  
Paulo de Tarso Roth Dalcin ◽  
Denis Maltz Grutcki ◽  
Paola Paganella Laporte ◽  
Paula Borges de Lima ◽  
Samuel Millan Menegotto ◽  
...  
Keyword(s):  
Asthma Control ◽  
Family Income ◽  
Pulmonary Function Tests ◽  
Cross Sectional Study ◽  
Inhaler Technique ◽  
Metered Dose Inhalers ◽  
Porto Alegre ◽  
Asthma Control Questionnaire ◽  
Cross Sectional ◽  
Metered Dose

OBJECTIVE: To evaluate inhaler technique in outpatients with asthma and to determine associations between the correctness of that technique and the level of asthma control. METHODS: This was a cross-sectional study involving patients > 14 years of age with physician-diagnosed asthma. The patients were recruited from the Asthma Outpatient Clinic of the Hospital de Clínicas de Porto Alegre, in the city of Porto Alegre, Brazil. The patients completed two questionnaires (a general questionnaire and an asthma control questionnaire based on the 2011 Global Initiative for Asthma guidelines), demonstrated their inhaler technique, and performed pulmonary function tests. Incorrect inhaler technique was defined as the incorrect execution of at least two of the predefined steps. RESULTS: We included 268 patients. Of those, 81 (30.2%) showed incorrect inhaler technique, which was associated with poor asthma control (p = 0.002). Logistic regression analysis identified the following factors associated with incorrect inhaler technique: being widowed (OR = 5.01; 95% CI, 1.74-14.41; p = 0.003); using metered dose inhalers (OR = 1.58; 95% CI, 1.35-1.85; p < 0.001); having a monthly family income < 3 times the minimum wage (OR = 2.67; 95% CI, 1.35-1.85; p = 0.008), and having > 2 comorbidities (OR = 3.80; 95% CI, 1.03-14.02; p = 0.045). CONCLUSIONS: In the sample studied, incorrect inhaler technique was associated with poor asthma control. Widowhood, use of metered dose inhalers, low socioeconomic level, and the presence of > 2 comorbidities were associated with incorrect inhaler technique.

scholarly journals Validation of scores of use of inhalation devices: valoration of errors

2015 ◽  
Vol 41 (4) ◽  
pp. 313-322 ◽  
Author(s):  
Letícia Zambelli-Simões ◽  
Maria Cleusa Martins ◽  
Juliana Carneiro da Cunha Possari ◽  
Greice Borges Carvalho ◽  
Ana Carla Carvalho Coelho ◽  
...  
Keyword(s):  
Inhaler Technique ◽  
Metered Dose Inhalers ◽  
Convenience Sample ◽  
Lung Capacity ◽  
Inhalation Devices ◽  
Criterion Validation ◽  
Metered Dose ◽  
Expert Analysis ◽  
The Subject

AbstractObjective: To validate two scores quantifying the ability of patients to use metered dose inhalers (MDIs) or dry powder inhalers (DPIs); to identify the most common errors made during their use; and to identify the patients in need of an educational program for the use of these devices.Methods: This study was conducted in three phases: validation of the reliability of the inhaler technique scores; validation of the contents of the two scores using a convenience sample; and testing for criterion validation and discriminant validation of these instruments in patients who met the inclusion criteria.Results: The convenience sample comprised 16 patients. Interobserver disagreement was found in 19% and 25% of the DPI and MDI scores, respectively. After expert analysis on the subject, the scores were modified and were applied in 72 patients. The most relevant difficulty encountered during the use of both types of devices was the maintenance of total lung capacity after a deep inhalation. The degree of correlation of the scores by observer was 0.97 (p < 0.0001). There was good interobserver agreement in the classification of patients as able/not able to use a DPI (50%/50% and 52%/58%; p < 0.01) and an MDI (49%/51% and 54%/46%; p < 0.05).Conclusions: The validated scores allow the identification and correction of inhaler technique errors during consultations and, as a result, improvement in the management of inhalation devices.

Comparison of Patient Preference and Ease of Teaching Inhaler Technique for Pulmicort Turbuhaler® versus Pressurized Metered-Dose Inhalers

2004 ◽  
Vol 17 (2) ◽  
pp. 129-139 ◽  
Author(s):  
Michael J. Welch ◽  
Harold S. Nelson ◽  
Gail Shapiro ◽  
George W. Bensch ◽  
William N. Sokol ◽  
...  
Keyword(s):  
Patient Preference ◽  
Inhaler Technique ◽  
Metered Dose Inhalers ◽  
Metered Dose ◽  
Pressurized Metered Dose Inhalers

Metered-Dose Inhalers: Mouth Open or Closed?-Reply

JAMA ◽  
1994 ◽  
Vol 271 (4) ◽  
pp. 272
Author(s):  
Michael J. Tidd
Keyword(s):  
Metered Dose Inhalers ◽  
Metered Dose

scholarly journals Numerical and Experimental Investigation on Key Parameters of the Respimat® Spray Inhaler

Processes ◽  
2020 ◽  
Vol 9 (1) ◽  
pp. 44
Author(s):  
Yi Ge ◽  
Zhenbo Tong ◽  
Renjie Li ◽  
Fen Huang ◽  
Jiaqi Yu
Keyword(s):  
High Speed ◽  
Fine Particles ◽  
Geometric Parameters ◽  
Metered Dose Inhalers ◽  
Geometric Pattern ◽  
Long Duration ◽  
Metered Dose ◽  
New Type ◽  
Computational Fluid Dynamics Cfd ◽  
Spray Velocity

Respimat®Soft MistTM is a newly developed spray inhaler. Different from traditional nebulizers, metered-dose inhalers, and dry powder inhalers, this new type of inhaler can produce aerosols with long duration, relatively slow speed, and a high content of fine particles. Investigating the effect of the key geometric parameters of the device on the atomization is of great significance for generic product development and inhaler optimization. In this paper, a laser high-speed camera experimental platform is built, and important parameters such as the geometric pattern and particle size distribution of the Respimat®Soft MistTM are measured. Computational fluid dynamics (CFD) and the volume of fluid method coupled with the Shear Stress Transport (SST) k-ω turbulence model are applied to simulate the key geometric parameters of the device. The effects of geometric parameters on the spray velocity distribution and geometric pattern are obtained. The angle of flow collision, the sphere size of the central divider and the length and width of the flow channel show significant impacts on the spray atomization.

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