1
|
Moon JY, Kim SH, Kim Y, Lee H, Rhee CK, Ra SW, Lee CY, Park JH, Park YB, Yoo KH. Suboptimal peak inspiratory flow rate in dry-powder inhaler users for chronic obstructive pulmonary disease in Korea. Pulm Pharmacol Ther 2024; 85:102298. [PMID: 38604404 DOI: 10.1016/j.pupt.2024.102298] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/17/2023] [Revised: 03/17/2024] [Accepted: 03/31/2024] [Indexed: 04/13/2024]
Abstract
BACKGROUND A suboptimal peak inspiratory flow rate (PIFR) in dry-powder inhaler (DPI) users can lead to insufficient therapeutic effects in the treatment of chronic obstructive pulmonary disease (COPD). However, few data on the prevalence of and factors associated with suboptimal PIFR in Korean patients with COPD are available. METHODS We conducted a cross-sectional study of patients with COPD who had been using DPIs for more than three months. PIFR was measured using an In-Check DIAL G16 device. Suboptimal PIFR was defined as below the resistance-matched threshold. Multivariable logistic regression analysis was used to determine factors associated with suboptimal PIFR. RESULTS Of 444 DPI users with COPD, the rate of suboptimal PIFR was 22.0 % (98/444). In a multivariable analysis, significant factors associated with suboptimal PIFR were age (adjusted odds ratio [aOR] = 1.06 by 1-year increase; 95 % confidence interval [CI] = 1.02-1.09), male sex (aOR = 0.28; 95 % CI = 0.11-0.73), body mass index (BMI) (aOR = 0.91 by 1 kg/m2 increase; 95 % CI = 0.85-0.99), post-bronchodilator forced vital capacity (FVC) %pred (aOR = 0.97 by 1%pred increase; 95 % CI = 0.95-0.99), and In-Check DIAL R2-type inhaler [medium-low resistance] use (aOR = 3.70 compared with R1-type inhalers [low resistance]; 95 % CI = 2.03-7.03). CONCLUSIONS In Korea, more than one-fifth of DPI users with COPD had a suboptimal PIFR. The factors associated with suboptimal PIFR were age, female gender, low BMI, low FVC, and R2-type inhaler use. Therefore, clinicians should carefully evaluate the possibility of suboptimal PIFR when prescribing DPIs.
Collapse
Affiliation(s)
- Ji-Yong Moon
- Department of Internal Medicine, Hanyang University College of Medicine, Seoul, South Korea
| | - Sang Hyuk Kim
- Division of Pulmonary, Allergy, and Critical Care Medicine, Department of Internal Medicine, Dongguk University Gyeongju Hospital, Dongguk University College of Medicine, Gyeongju, South Korea
| | - Youlim Kim
- Department of Internal Medicine, Konkuk University Medical Center, Konkuk University School of Medicine, Seoul, South Korea
| | - Hyun Lee
- Department of Internal Medicine, Hanyang University College of Medicine, Seoul, South Korea
| | - Chin Kook Rhee
- Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, South Korea
| | - Seung Won Ra
- Department of Internal Medicine, Ulsan University Hospital, University of Ulsan College of Medicine, Ulsan, South Korea
| | - Chang Youl Lee
- Division of Pulmonary, Allergy and Critical Care Medicine, Department of Internal Medicine, Hallym University Chuncheon Sacred Heart Hospital, Chuncheon-si, Gangwon-do, South Korea
| | - Joo Hun Park
- Department of Pulmonary and Critical Care Medicine, Ajou University School of Medicine, Suwon, South Korea
| | - Yong Bum Park
- Division of Pulmonary, Allergy and Critical Care Medicine, Department of Internal Medicine, Hallym University Kangdong Sacred Heart Hospital, Seoul, South Korea.
| | - Kwang Ha Yoo
- Department of Internal Medicine, Konkuk University Medical Center, Konkuk University School of Medicine, Seoul, South Korea.
| |
Collapse
|
2
|
Murugaiya S, Murugesan B, S P. Prevalence and Factors Affecting the Optimal and Non-optimal Peak Inspiratory Flow Rate in Stable and Exacerbation Phases of Chronic Obstructive Pulmonary Disease and Bronchial Asthma in India. Cureus 2024; 16:e58670. [PMID: 38774171 PMCID: PMC11107390 DOI: 10.7759/cureus.58670] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/18/2024] [Indexed: 05/24/2024] Open
Abstract
INTRODUCTION Chronic obstructive pulmonary disease (COPD) and bronchial asthma pose significant threats and challenges to global health care, emphasizing the need for precise inhaler therapies to overcome this burden. The optimal peak inspiratory flow rate (PIFR) is a crucial determinant for the right selection and effective use of an inhaler device. It also helps to improve the treatment effectiveness of obstructive airway diseases worldwide as it allows effective drug delivery to distal airways and lung parenchyma. It is used as a selection criterion by physicians around the world for selecting personalized inhaler devices. OBJECTIVE To find out the optimal and non-optimal PIFR prevalence and its influencing factors in stable and exacerbation phases of COPD and bronchial asthma in Tamil Nadu, India. METHODOLOGY It is a single-center, observational, cross-sectional study conducted from February 2022 to August 2023. The patients who meet the diagnostic criteria specified by the Global Initiative for Chronic Obstructive Lung Disease (GOLD) guidelines for COPD and the Global Initiative for Asthma (GINA) guidelines for bronchial asthma are enrolled in our study. The PIFR was measured using a hand-held digital spirometry device, along with demographic data collection. Statistical analyses, including t-tests and chi-square tests, were performed using SPSS version 21 (IBM Corp., Armonk, NY). RESULTS Gender, height, and disease severity significantly impacted the PIFR. Females, normal BMI individuals, and those with moderate disease severity exhibited higher optimal PIFR rates. Stable or exacerbation phases, disease, and smoking status do not influence either optimal or non-optimal PIFR. Notably, substantial differences in lung function parameters were observed between optimal (60-90 L/min) and non-optimal PIFR (insufficient: <30 L/min, suboptimal: 30-60 L/min, excessive: >90 L/min) groups, highlighting their impact on respiratory health. CONCLUSION This study emphasizes the importance of personalized inhaler strategies, considering gender, height, and disease severity. Proper inhaler device selection, continuous monitoring of inhaler technique, and tailored inhaler education at every OPD visit are vital for optimizing effective COPD and bronchial asthma management and improving adherence to treatment.
Collapse
Affiliation(s)
- Selvaraj Murugaiya
- Department of Respiratory Medicine, Trichy SRM Medical College Hospital and Research Centre, Trichy, IND
| | - Buvaneshwari Murugesan
- Department of Respiratory Medicine, Trichy SRM Medical College Hospital and Research Centre, Trichy, IND
| | - Prasad S
- Department of Community Medicine, K.A.P. Viswanatham Government Medical College, Trichy, IND
| |
Collapse
|
3
|
Ohar JA, Mahler DA, Davis GN, Lombardi DA, Moran EJ, Crater GD. Clinical Burden of Chronic Obstructive Pulmonary Disease in Patients with Suboptimal Peak Inspiratory Flow. Can Respir J 2024; 2024:8034923. [PMID: 38560416 PMCID: PMC10980549 DOI: 10.1155/2024/8034923] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2022] [Revised: 02/09/2024] [Accepted: 02/22/2024] [Indexed: 04/04/2024] Open
Abstract
Introduction Many patients with chronic obstructive pulmonary disease (COPD) may derive inadequate benefit from dry powder inhalers (DPIs) because of suboptimal peak inspiratory flow (sPIF). Objectives To assess the clinical burden of COPD by characterizing the clinical characteristics of participants with sPIF against medium-low resistance DPIs versus those with optimal PIF (oPIF) from two phase 3 clinical trials. Methods Baseline data were collected from two randomized, controlled, phase 3 trials (NCT03095456; NCT02518139) in participants with moderate-to-severe COPD. oPIF (60 L/min) against the medium-low resistance DPIs was used as the threshold for defining the PIF subgroups (<60 L/min (sPIF) vs ≥60 L/min (oPIF)). Results Most participants included in this analysis were White (92%) and male (63%); the mean (range) age was 65 (43-87) years. Participants with sPIF had significantly greater dyspnea than those with oPIF as measured using the modified Medical Research Council scoring (mean (95% CI): 2.1 (2.0-2.2) vs 1.6 (1.4-1.7); P < 0.001) and baseline dyspnea index (mean (95% CI): 5.1 (4.9-5.4) vs 6.1 (5.8-6.3); P < 0.001). Based on COPD Assessment Test scores, participants with sPIF had a higher COPD symptom burden than those with oPIF (mean (95% CI): 21.5 (19.7-23.3) vs 19.5 (18.6-20.4); P = 0.05). Conclusion In these trials, participants with COPD who had sPIF against the medium-low resistance DPIs had more dyspnea and worse health status than those with oPIF. These results demonstrate that sPIF is associated with a higher clinical burden as measured by patient-reported outcomes.
Collapse
Affiliation(s)
- Jill A. Ohar
- Section of Pulmonary, Critical Care, Allergy, and Immunologic Diseases, Wake Forest School of Medicine, Winston-Salem, NC, USA
| | - Donald A. Mahler
- Geisel School of Medicine at Dartmouth, Hanover, NH, USA
- Valley Regional Hospital, Claremont, NH, USA
| | | | | | | | | |
Collapse
|
4
|
Kainu A, Vartiainen VA, Mazur W, Hisinger-Mölkänen H, Lavorini F, Janson C, Andersson M. Successful Use of Easyhaler ® Dry Powder Inhaler in Patients with Chronic Obstructive Pulmonary Disease; Analysis of Peak Inspiratory Flow from Three Clinical Trials. Pulm Ther 2024; 10:133-142. [PMID: 38170393 PMCID: PMC10881915 DOI: 10.1007/s41030-023-00246-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2023] [Accepted: 11/17/2023] [Indexed: 01/05/2024] Open
Abstract
INTRODUCTION There is increasing pressure to use environmentally friendly dry powder inhalers (DPI) instead of pressurized metered-dose inhalers (pMDI). However, correct inhalation technique is needed for effective inhaler therapy, and there is persistent concern whether patients with chronic obstructive pulmonary disease (COPD) can generate sufficient inspiratory effort to use DPIs successfully. The aims of this study were to find clinical predictors for peak inspiratory flow rate (PIF) and to assess whether patients with COPD had difficulties in generating sufficient PIF with a high resistance DPI. METHODS Pooled data of 246 patients with COPD from previous clinical trials was analyzed to find possible predictors of PIF via the DPI Easyhaler (PIFEH) and to assess the proportion of patients able to achieve an inhalation flow rate of 30 l/min, which is needed to use the Easyhaler successfully. RESULTS The mean PIF was 56.9 l/min and 99% (243/246) of the study patients achieved a PIF ≥ 30 l/min. A low PIF was associated with female gender and lower forced expiratory volume in 1 s (FEV1), but the association was weak and a statistical model including both only accounted for 18% of the variation seen in PIFEH. CONCLUSIONS Based on our results, impaired expiratory lung function or patient characteristics do not predict patients' ability to use DPIs in COPD; 99% of the patients generated sufficient PIFEH for successful dose delivery. Considering the targets for sustainability in health care, this should be addressed as DPIs are a potential option for most patients when choosing the right inhaler for the patient. TRIAL REGISTRATION Two of three included trials were registered under numbers NCT04147572 and NCT01424137. Third trial preceded registration platforms and therefore, was not registered.
Collapse
Affiliation(s)
- Annette Kainu
- Medzilla Oy, Helsinki, Finland
- Metropolia Proof Health, Metropolia University for Applied Sciences, Helsinki, Finland
| | - Ville A Vartiainen
- Individualized Drug Therapy Research Program, Faculty of Medicine, University of Helsinki, Helsinki, Finland
- Department of Pulmonary Medicine, Heart and Lung Center, Helsinki University Hospital, Helsinki, Finland
| | - Witold Mazur
- Heart and Lung Center, University of Helsinki and Helsinki University Hospital, Helsinki, Finland
| | | | - Federico Lavorini
- Department of Experimental and Clinical Medicine, University of Florence, Florence, Italy
| | - Christer Janson
- Department of Medical Sciences: Respiratory, Allergy and Sleep Research, Uppsala University, Uppsala, Sweden
| | - Martin Andersson
- Department of Laboratory Medicine, Karolinska Institutet, Stockholm, Sweden
| |
Collapse
|
5
|
Chrystyn H, Azouz W, Tarsin W. Dry Powder Inhalers: From Bench to Bedside. J Aerosol Med Pulm Drug Deliv 2023; 36:324-335. [PMID: 38016124 DOI: 10.1089/jamp.2023.29103.hc] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2023] Open
Abstract
Dry powder inhalers (DPIs) are now widely prescribed and preferred by the majority of patients. These devices have many advantages over the traditional pressurized metered-dose inhaler (pMDI) but they do have disadvantages. The characteristics of the dose emitted from a DPI are affected by the inhalation manoeuvre used by a patient. Each patient is different and the severity of their lung disease varies from mild to very severe. This affects how they use an inhaler and so determines the type of dose they inhale. An understanding of the pharmaceutical science related to DPIs is important to appreciate the relevance of how patients inhale through these devices. Also, each type of DPI has its unique dose preparation routine, and thus it is essential to follow these recommended steps because errors at this stage may result in no dose being inhaled. All issues related to the inhalation manoeuvre and dose preparation are addressed in this chapter. The importance of the inhalation technique is highlighted with a realization of inhale technique training and checking. During routine patient management, devices should not be switched nor doses increased unless the patient has demonstrated that they can and do use their DPI.
Collapse
Affiliation(s)
- Henry Chrystyn
- Inhalation Consultancy Ltd., Yeadon, Leeds, United Kingdom
| | - Wahida Azouz
- School of Pharmacy and Pharmaceutical Sciences, University of Huddersfield, West Yorkshire, United Kingdom
| | - Walid Tarsin
- Department of Pharmacology and Clinical Pharmacy, University of Tripoli, Libya
| |
Collapse
|
6
|
Iamthanaporn C, Wisitsartkul A, Chuaychoo B. Cognitive impairment according to Montreal Cognitive Assessment independently predicts the ability of chronic obstructive pulmonary disease patients to maintain proper inhaler technique. BMC Pulm Med 2023; 23:144. [PMID: 37101175 PMCID: PMC10131352 DOI: 10.1186/s12890-023-02448-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2022] [Accepted: 04/19/2023] [Indexed: 04/28/2023] Open
Abstract
BACKGROUND Maintaining correct inhaler technique is crucial in the management of chronic obstructive pulmonary disease (COPD). We aimed to investigate the inhaler technique in patients with COPD, to compare it immediately after and at 1 month after training, and to identify the predictors of incorrect inhaler use at 1 month after training. METHODS This prospective study was conducted at the COPD clinic of Siriraj Hospital (Bangkok, Thailand). Patients demonstrating improper inhaler use were trained face-to-face by pharmacists. Inhaler technique was re-assessed immediately after and at 1 month after training. The Montreal Cognitive Assessment (MoCA) score, pulmonary function tests, 6-min walk distance (6 MWD), modified Medical Research Council scale score, and COPD Assessment Test (CAT) score were evaluated. RESULTS Sixty-six patients with COPD who demonstrated at least one critical error during the use of any controller inhaler were enrolled. The mean age was 73.0 ± 9.0 years, and 75.8% patients had moderate/severe COPD. Immediately after training, all patients used dry powder inhalers correctly and 88.1% used pressurized metered-dose inhalers correctly. At 1 month, the number of patients demonstrating the correct technique decreased across all devices. Multivariable analysis revealed that MoCA score ≤ 16 was independently associated with a critical error at 1 month after training (adjusted odds ratio: 12.7, 95% confidence interval: 1.8-88.2, p = 0.010). At 1 month, CAT score (11.4 ± 8.9 vs. 8.4 ± 5.5, p = 0.018) and 6 MWD (351 ± 93 m vs. 372 ± 92 m, p = 0.009) had significantly improved in patients demonstrating the correct technique, and CAT score met the minimal clinically important difference. CONCLUSIONS Face-to-face training by pharmacists improved patient performance. However, the number of patients following proper technique had decreased at 1 month after training. Cognitive impairment (MoCA score ≤ 16) independently predicted the ability of COPD patients to maintain proper inhaler technique. Assessment of cognitive function combined with technical re-assessment and repeated training should improve COPD management.
Collapse
Affiliation(s)
| | | | - Benjamas Chuaychoo
- Division of Respiratory Disease and Tuberculosis, Department of Medicine, Faculty of Medicine Siriraj Hospital, Mahidol University, 2 Wanglang Road, Bangkoknoi, Bangkok, 10700, Thailand.
| |
Collapse
|
7
|
Correlation between Hand Grip Strength and Peak Inspiratory Flow Rate in Patients with Stable Chronic Obstructive Pulmonary Disease. Diagnostics (Basel) 2022; 12:diagnostics12123050. [PMID: 36553057 PMCID: PMC9777131 DOI: 10.3390/diagnostics12123050] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2022] [Revised: 12/02/2022] [Accepted: 12/03/2022] [Indexed: 12/11/2022] Open
Abstract
Optimal peak inspiratory flow rate (PIFR) is required for effective drug delivery to distal airways when using dry powder inhalers (DPIs). This study aimed to examine the association between PIFR and hand grip strength (HGS) in stable COPD patients. A cross-sectional study was conducted. PIFR was measured using the In-check DIAL to assess for Accuhaler and Turbuhaler DPIs. HGS was measured using a handheld dynamometer. A PIFR of <60 L/min was considered suboptimal PIFR. Demographics, clinical data, and spirometric data were collected and compared. Eighty-one patients (86% men) were included. Mean age was 73.3 ± 8.9 years. FEV1 was 65.3 ± 23.7%. The prevalence of suboptimal PIFR was 38% and 59% for Accuhaler and Turbuhaler, respectively. HGS in the suboptimal PIFR group was lower than in the optimal PIFR group for Accuhaler (22.8 ± 4.7 vs. 33.2 ± 6.9 kg, p < 0.001) and for Turbuhaler (25.3 ± 6.4 vs. 35.1 ± 6.3 kg, p < 0.001). The equation for predicted Accuhaler PIFR (L/min) was −30.340 + (0.274 × hand grip strength) − (0.206 × age) + (0.219 × height) + (1.019 × FVC). The equation for predicted Turbuhaler PIFR (L/min) was 56.196 + (0.321 × hand grip strength) − (0.196 × female) − (0.224 × age) + (0.304 × FVC). The best cutoff values of HGS for predicting optimal PIFR in Accuhaler and Turbuhaler were 26.8 kg (with 82% sensitivity and 84% specificity) and 31.9 kg (with 79% sensitivity and 90% specificity), respectively. In conclusion, HGS correlated with PIFR in patients with clinically stable COPD, especially in the group with pronounced symptoms without frequent exacerbations. HGS threshold values associated with suboptimal PIFR were identified. HGS may be used as an alternative tool to assess an optimal inspiratory force for DPIs.
Collapse
|
8
|
A review of upper airway physiology relevant to the delivery and deposition of inhalation aerosols. Adv Drug Deliv Rev 2022; 191:114530. [PMID: 36152685 DOI: 10.1016/j.addr.2022.114530] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2022] [Revised: 08/07/2022] [Accepted: 09/01/2022] [Indexed: 01/24/2023]
Abstract
Developing effective oral inhaled drug delivery treatment strategies for respiratory diseases necessitates a thorough knowledge of the respiratory system physiology, such as the differences in the airway channel's structure and geometry in health and diseases, their surface properties, and mechanisms that maintain their patency. While respiratory diseases, such as chronic obstructive pulmonary disease (COPD) and asthma and their implications on the lower airways have been the core focus of most of the current research, the role of the upper airway in these diseases is less known, especially in the context of inhaled drug delivery. This is despite the fact that the upper airway is the passageway for inhaled drugs to be delivered to the lower airways, and their replicas are indispensable in current standards, such as the cascade impactor experiments for testing inhaled drug delivery technology. This review provides an overview of upper airway collapsibility and their mechanical properties, the effects of age and gender on upper airway geometry, and surface properties. The review also discusses how COPD and asthma affect the upper airway and the typical inhalation flow characteristics exhibited by the patients with these diseases.
Collapse
|
9
|
Chakma M, Usmani O. Inhalers and the Environment: Pollution, Plastics and Policy. PNEUMON 2022. [DOI: 10.18332/pne/154608] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
|
10
|
Suwanpitak K, Lim LY, Singh I, Sriamornsak P, Thepsonthi T, Huanbutta K, Sangnim T. Development of an Add-On Device Using 3D Printing for the Enhancement of Drug Administration Efficiency of Dry Powder Inhalers (Accuhaler). Pharmaceutics 2022; 14:pharmaceutics14091922. [PMID: 36145670 PMCID: PMC9504113 DOI: 10.3390/pharmaceutics14091922] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2022] [Revised: 09/04/2022] [Accepted: 09/08/2022] [Indexed: 11/18/2022] Open
Abstract
The goal of this study was to develop an add-on device for dry powder inhalers (Accuhaler) via 3D printing to improve drug administration efficiency in patients with limited inspiratory capacity, including young children, the elderly, and those with chronic obstructive pulmonary disease. With salmeterol xinafoate and fluticasone propionate as model active pharmaceutical ingredients (API), the emitted API doses were used to assess the effectiveness of the add-on device. The APIs were quantified by an HPLC assay validated for specificity, range, linearity, accuracy, and precision. The motor power of the add-on device could be regulated to moderate fan speed and the air flow in the assembled device. When 50–100% of the fan motor power of the add-on device was used, the emitted dose from the attached dry powder inhaler (DPI) was increased. A computational fluid dynamics application was used to simulate the air and particle flow in the DPI with the add-on device in order to elucidate the operating mechanism. The use of the add-on device combined with a sufficient inhalation flow rate resulted in a larger pressure drop and airflow velocity at the blister pocket. As these characteristics are associated with powder fluidization, entrainment, and particle re-suspension, this innovative add-on device might be utilized to enhance the DPI emitted drug dose for patients with low inspiratory rates and to facilitate the provision of adequate drug doses to achieve the treatment outcomes.
Collapse
Affiliation(s)
- Kittipat Suwanpitak
- Faculty of Pharmaceutical Sciences, Burapha University, 169, Seansook, Muang, Chonburi 20131, Thailand
| | - Lee-Yong Lim
- Division of Pharmacy, School of Allied Health, University of Western Australia, Perth, WA 6009, Australia
| | - Inderbir Singh
- Chitkara College of Pharmacy, Chitkara University, Patiala 140401, Punjab, India
| | | | - Thanongsak Thepsonthi
- Faculty of Engineering, Burapha University, 169, Seansook, Muang, Chonburi 20131, Thailand
| | - Kampanart Huanbutta
- School of Pharmacy, Eastern Asia University, Thanyaburi, Pathumthani 12110, Thailand
- Correspondence: (K.H.); (T.S.)
| | - Tanikan Sangnim
- Faculty of Pharmaceutical Sciences, Burapha University, 169, Seansook, Muang, Chonburi 20131, Thailand
- Correspondence: (K.H.); (T.S.)
| |
Collapse
|
11
|
Usami O. Improved inhaler handling after repeated inhalation guidance for elderly patients with bronchial asthma and chronic obstructive pulmonary disease. Medicine (Baltimore) 2022; 101:e30238. [PMID: 36107520 PMCID: PMC9439803 DOI: 10.1097/md.0000000000030238] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
Abstract
Accurate evaluation of inhaler handling is essential for improved treatment of bronchial asthma (BA) and chronic obstructive pulmonary disease (COPD). Many studies have described the correlation between age, inhalation guidance, and procedure improvement. Elderly patients should receive proper inhalation guidance. This was a retrospective open cohort study conducted at a single hospital with outpatient open pharmacies that provided inhalation guidance to patients of BA and COPD. A total of 525 cases were included in the study. The median age was 71 years with no significant difference between genders (males: 71 ± 16.0 years; females: 72 ± 16.1 years; P = .24). There were 226 males (43.0%) and 299 females (57.0%; P = .03). BA was significantly more prevalent than COPD (P < .001). There was no significant difference in dry powder inhaler (DPI) and pressurized metered-dose inhaler (pMDI) visits in those <60 years of age (P = .23). pMDI was used significantly more often than DPI in those aged 60 to 90 years of age (P < .001). In both <70 and >70 years of age, the most common error with DPI use was improper inhalation speed, which reduced (improved) at the third visit. Gargling errors were most common with DPI use at the second visit and with pMDI at the first visit in both age groups, which subsequently reduced rapidly. Continuous repeated guidance steadily and significantly decreased errors with all devices (P < .001 for DPI, pMDI, and soft mist inhaler). Elderly cases (>70 years of age) should undergo continuous repeated guidance to reduce inhalation errors like inhalation speed and gargling errors.
Collapse
Affiliation(s)
- Osamu Usami
- Department of Respiratory Medicine of the Kurihara Central Hospital, Miyagi, Japan
- *Correspondence: Osamu Usami, Department of Respiratory Medicine, Kurihara Central Hospital, Miyano Cyuo 3-11, Tsukidate, Kurihara, Miyagi 987-2205, Japan (e-mail: )
| |
Collapse
|
12
|
Lindh A, Theander K, Arne M, Lisspers K, Lundh L, Sandelowsky H, Ställberg B, Westerdahl E, Zakrisson AB. One additional educational session in inhaler use to patients with COPD in primary health care - A controlled clinical trial. PATIENT EDUCATION AND COUNSELING 2022; 105:2969-2975. [PMID: 35672192 DOI: 10.1016/j.pec.2022.05.013] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/14/2022] [Revised: 05/19/2022] [Accepted: 05/20/2022] [Indexed: 06/15/2023]
Abstract
OBJECTIVE To investigate whether one additional educational session about inhaler use, delivered to patients with COPD in primary healthcare, could affect the patients' skills in inhaler use. Specifically, to study the effects on errors related to handling the device, to inhalation technique, and to both. METHODS This nonrandomized controlled clinical trial included 64 patients who used devices and made errors. COPD nurses assessed inhaler use using a checklist and educated patients. Intervention group received one additional educational session after two weeks. RESULTS At baseline, patients in the IG had more devices (n = 2,1) compared to patients in the CG (n = 1,6) (p = 0.003). No other statistically significant differences were seen at baseline. At follow-up, intervention group showed a lower proportion of patients who made errors related to handling the device (p = 0.006). No differences were seen in the other categories. CONCLUSION One additional educational session in inhaler use for patients with COPD was effective in reducing the proportion of patients making errors related to handling of their devices. PRACTICE IMPLICATIONS Categorization of errors might help healthcare professionals to assess the suitability of patients' devices, tailor patient education, and thus improve patient health.
Collapse
Affiliation(s)
- Annika Lindh
- School of Health Sciences, Faculty of Medicine and Health, Örebro University, Sweden; Centre for Clinical Research and Education, Region Värmland, Sweden.
| | - Kersti Theander
- Centre for Clinical Research and Education, Region Värmland, Sweden.
| | - Mats Arne
- Centre for Clinical Research and Education, Region Värmland, Sweden; Department of Medical Sciences, Respiratory, Allergy & Sleep Research, Uppsala University, Sweden.
| | - Karin Lisspers
- Department of Public Health and Caring Sciences, Family Medicine and Preventive Medicine, Uppsala University, Sweden.
| | - Lena Lundh
- Academic Primary Health Care Centre, Stockholm, Sweden; Karolinska Institute, NVS, Division of Family Medicine and Primary Care, Stockholm, Sweden.
| | - Hanna Sandelowsky
- Academic Primary Health Care Centre, Stockholm, Sweden; Karolinska Institute, NVS, Division of Family Medicine and Primary Care, Stockholm, Sweden.
| | - Björn Ställberg
- Department of Public Health and Caring Sciences, Family Medicine and Preventive Medicine, Uppsala University, Sweden.
| | - Elisabeth Westerdahl
- University Health Care Research Center, Faculty of Medicine and Health, Örebro University, Sweden.
| | - Ann-Britt Zakrisson
- University Health Care Research Center, Faculty of Medicine and Health, Örebro University, Sweden.
| |
Collapse
|
13
|
Leving MT, van Boven JFM, Bosnic-Anticevich SZ, van Cooten J, Correia de Sousa J, Cvetkovski B, Dekhuijzen R, Dijk L, García Pardo M, Gardev A, Gawlik R, van der Ham I, Hartgers-Gubbels ES, Janse Y, Lavorini F, Maricoto T, Meijer J, Metz B, Price DB, Roman-Rodríguez M, Schuttel K, Stoker N, Tsiligianni I, Usmani OS, Kocks JH. Suboptimal Peak Inspiratory Flow and Critical Inhalation Errors are Associated with Higher COPD-Related Healthcare Costs. Int J Chron Obstruct Pulmon Dis 2022; 17:2401-2415. [PMID: 36185173 PMCID: PMC9521797 DOI: 10.2147/copd.s380736] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2022] [Accepted: 09/12/2022] [Indexed: 12/03/2022] Open
Abstract
Purpose To assess the relationship between suboptimal Peak Inspiratory Flow (sPIF), inhalation technique errors, and non-adherence, with Healthcare Resource Utilisation (HCRU) in Chronic Obstructive Pulmonary Disease (COPD) patients receiving maintenance therapy via a Dry Powder Inhaler (DPI). Patients and methods The cross-sectional, multi-country PIFotal study included 1434 COPD patients (≥40 years) using a DPI for maintenance therapy. PIF was measured with the In-Check DIAL G16, and sPIF was defined as a typical PIF lower than required for the device. Inhalation technique was assessed by standardised evaluation of video recordings and grouped into 10 steps. Patients completed the “Test of Adherence to Inhalers” questionnaire. HCRU was operationalised as COPD-related costs for primary healthcare, secondary healthcare, medication, and total COPD-related costs in a 1-year period. Results Participants with sPIF had higher medication costs compared with those with optimal PIF (cost ratio [CR]: 1.07, 95% CI [1.01, 1.14]). Multiple inhalation technique errors were associated with increased HCRU. Specifically, “insufficient inspiratory effort” with higher secondary healthcare costs (CR: 2.20, 95% CI [1.37, 3.54]) and higher total COPD-related costs (CR: 1.16, 95% CI 1.03–1.31). “no breath-hold following the inhalation manoeuvre (<6 s)” with higher medication costs (CR: 1.08, 95% CI [1.02, 1.15]) and total COPD-related costs (CR 1.17, 95% CI [1.07, 1.28]), and “not breathing out calmly after inhalation” with higher medication costs (CR: 1.19, 95% CI [1.04, 1.37]). Non-adherence was not significantly associated with HCRU. Conclusion sPIF and inhalation technique errors were associated with higher COPD-related healthcare utilisation and costs in COPD patients on DPI maintenance therapy.
Collapse
Affiliation(s)
- Marika T Leving
- General Practitioners Research Institute, Groningen, the Netherlands
| | - Job F M van Boven
- University Medical Centre Groningen, Groningen Research Institute for Asthma and COPD (GRIAC), University of Groningen, Groningen, the Netherlands
- University Medical Centre Groningen, Department of Clinical Pharmacy & Pharmacology, University of Groningen, Groningen, the Netherlands
- Medication Adherence Expertise Centre of the Northern Netherlands (MAECON), Groningen, the Netherlands
| | - Sinthia Z Bosnic-Anticevich
- Woolcock Institute of Medical Research, University of Sydney, Sydney, Australia
- Sydney Local Health District, Sydney, Australia
| | - Joyce van Cooten
- General Practitioners Research Institute, Groningen, the Netherlands
| | - Jaime Correia de Sousa
- Life and Health Sciences Research Institute (ICVS), PT Government Associate Laboratory, School of Medicine, University of Minho, Braga, Portugal
| | - Biljana Cvetkovski
- Woolcock Institute of Medical Research, University of Sydney, Sydney, Australia
| | | | - Lars Dijk
- General Practitioners Research Institute, Groningen, the Netherlands
| | - Marina García Pardo
- Primary Care Respiratory Research Unit, Instituto De Investigación Sanitaria De Baleares (IdISBa), Palma de Mallorca, Spain
| | - Asparuh Gardev
- Boehringer Ingelheim International GmbH, Ingelheim am Rhein, Germany
| | - Radosław Gawlik
- Department of Internal Medicine, Allergology, Clinical Immunology, Medical University of Silesia, Katowice, Poland
| | - Iris van der Ham
- General Practitioners Research Institute, Groningen, the Netherlands
| | | | - Ymke Janse
- General Practitioners Research Institute, Groningen, the Netherlands
| | - Federico Lavorini
- Department of Experimental and Clinical Medicine, Careggi University Hospital, Florence, Italy
| | - Tiago Maricoto
- Faculty of Health Sciences, University of Beira Interior, Covilha, Portugal
| | - Jiska Meijer
- General Practitioners Research Institute, Groningen, the Netherlands
| | - Boyd Metz
- General Practitioners Research Institute, Groningen, the Netherlands
| | - David B Price
- Centre of Academic Primary Care, Division of Applied Health Sciences, University of Aberdeen, Aberdeen, UK
- Observational and Pragmatic Research Institute, Singapore
| | - Miguel Roman-Rodríguez
- Primary Care Respiratory Research Unit, Instituto De Investigación Sanitaria De Baleares (IdISBa), Palma de Mallorca, Spain
| | - Kirsten Schuttel
- General Practitioners Research Institute, Groningen, the Netherlands
| | - Nilouq Stoker
- General Practitioners Research Institute, Groningen, the Netherlands
| | - Ioanna Tsiligianni
- Department of Social Medicine, Health Planning Unit, Faculty of Medicine, University of Crete, Rethymno, Greece
| | - Omar S Usmani
- Airway Disease, National Heart and Lung Institute (NHLI), Imperial College London and Royal Brompton Hospital, London, UK
| | - Janwillem H Kocks
- General Practitioners Research Institute, Groningen, the Netherlands
- University Medical Centre Groningen, Groningen Research Institute for Asthma and COPD (GRIAC), University of Groningen, Groningen, the Netherlands
- Observational and Pragmatic Research Institute, Singapore
- Department of Pulmonology, University of Groningen, University Medical Centre Groningen, Groningen, the Netherlands
- Correspondence: Janwillem H Kocks, General Practitioners Research Institute, Professor Enno Dirk Wiersmastraat 5, Groningen, 9713 GH, the Netherlands, Tel +31 50 211 3898, Email
| |
Collapse
|
14
|
Daily inhaled flow profiles and drug release from dry powder inhalers in patients with bronchial asthma. Respir Med 2022; 201:106950. [DOI: 10.1016/j.rmed.2022.106950] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/17/2022] [Revised: 07/06/2022] [Accepted: 08/02/2022] [Indexed: 11/19/2022]
|
15
|
Chrystyn H, Saralaya D, Shenoy A, Toor S, Kastango K, Calderon E, Li T, Safioti G. Investigating the Accuracy of the Digihaler, a New Electronic Multidose Dry-Powder Inhaler, in Measuring Inhalation Parameters. J Aerosol Med Pulm Drug Deliv 2022; 35:166-177. [PMID: 34964657 PMCID: PMC9242715 DOI: 10.1089/jamp.2021.0031] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023] Open
Abstract
Background: The Digihaler® is a Food and Drug Administration-approved, digital multidose dry powder inhaler with an integrated electronic module that provides patients and health care professionals with feedback on inhalation parameters, including usage, adherence, and technique. This study compared inhalation parameters measured using the Digihaler with readings made simultaneously using an inhalation profile recorder (IPR). Methods: This single-visit, open-label study enrolled children (4-17 years) and adults (18-55 years) with asthma, and adults (≥55 years) with chronic obstructive pulmonary disease (COPD). Participants made three separate inhalations using an empty Digihaler device, each measured simultaneously by the Digihaler and IPR. Inhalation profiles were downloaded from the devices at the end of the study. Inhalation parameters measured included peak inspiratory flow (PIF) and inhaled volume (inhV). The profile with the highest PIF and corresponding IPR profile were analyzed. Results: Overall, 150 participants were enrolled; inhalation data were available for 148 (50 children and 49 adults with asthma, and 49 with COPD). Mean (standard deviation [SD]) age was 39.1 (24.5) years; 51% of participants were male. Overall mean (SD) PIFs as measured by the Digihaler and IPR were 70.62 (17.73) L/min and 72.55 (19.42) L/min, respectively, with a mean percentage difference of -1.75% (95% confidence interval [CI]: -3.64 to 0.15). Mean percentage differences between the Digihaler and IPR measurements of PIF ranged from -2.97% among adults with COPD to 0.16% among children with asthma. Overall mean (SD) inhV for the Digihaler and IPR were 1.57 (0.69) L and 1.67 (0.73) L, respectively, with a mean percentage difference of -6.11 (95% CI: -8.08 to -4.13). There was a strong correlation between PIF and inhV measurements taken by the Digihaler and those taken by the IPR (Spearman's correlation coefficient = 0.96). Conclusions: Our findings confirm the ability of the Digihaler to provide accurate measurement of inhalation parameters when used by patients.
Collapse
Affiliation(s)
- Henry Chrystyn
- Inhalation Consultancy Ltd., Leeds, United Kingdom.,Address correspondence to: Henry Chrystyn, MPharm, PhD, Inhalation Consultancy Ltd., 77 High Street, Yeadon, Leeds LS19 7SP, United Kingdom
| | - Dinesh Saralaya
- Bradford Institute for Health Research, Bradford Teaching Hospitals NHS Foundation Trust, Bradford, United Kingdom
| | - Anil Shenoy
- Bradford Institute for Health Research, Bradford Teaching Hospitals NHS Foundation Trust, Bradford, United Kingdom
| | - Sophie Toor
- Respiratory Matters, Huddersfield, United Kingdom
| | - Kari Kastango
- Department of Statistical Operations, Everest Clinical Research, Little Falls, New Jersey, USA
| | - Enric Calderon
- Department of Combination Products and Devices R&D, Teva Pharmaceutical Industries, Waterford, Ireland
| | - Thomas Li
- Department of Statistics, Teva Branded Pharmaceutical Products R&D Inc., West Chester, Pennsylvania, USA
| | - Guilherme Safioti
- Department of Connected Respiratory, Teva Pharmaceutical Industries Ltd., Amsterdam, The Netherlands
| |
Collapse
|
16
|
State of the Art in Capsule-Based Dry Powder Inhalers: Deagglomeration Techniques and the Consequences for Formulation Aerosolization. Pharmaceutics 2022; 14:pharmaceutics14061185. [PMID: 35745758 PMCID: PMC9230934 DOI: 10.3390/pharmaceutics14061185] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2022] [Revised: 05/27/2022] [Accepted: 05/28/2022] [Indexed: 02/01/2023] Open
Abstract
Commercially available dry powder inhalers (DPIs) are usually devices in a fixed combination with the intended formulation, and a change in medication by the physician often forces the patient to use a different device, requiring the patient to relearn how to use it, resulting in lower adherence and inadequate therapy. To investigate whether DPIs can achieve successful outcomes regardless of the formulation and flow rate used, a novel DPI and two commercially available devices were compared in vitro for their deagglomeration behavior for different binary blends and a spray-dried particle formulation. The results demonstrate that the novel device achieved the highest fine particle fraction (FPF) regardless of the formulations tested. In the binary mixtures tested, the highest emitted fraction was obtained by shaking out the powder due to the oscillating motion of the capsule in the novel device during actuation. For DPIs with high intrinsic resistance to airflow, similar FPFs were obtained with the respective DPI and formulation, regardless of the applied flow rate. Additionally, the development and use of binary blends of spray-dried APIs and carrier particles may result in high FPF and overcome disadvantages of spray-dried particles, such as high powder retention in the capsule.
Collapse
|
17
|
González-Torralba F, Baloira A, Abad A, Fuster A, García-Rivero JL, García-Sidro P, Márquez-Martín E, Palop M, Soler N, Velasco JL. FIDEPOC: Consensus on Inspiratory Flow and Lung Deposition as Key Decision Factors in COPD Inhaled Therapy. Int J Chron Obstruct Pulmon Dis 2022; 17:1005-1015. [PMID: 35547784 PMCID: PMC9081625 DOI: 10.2147/copd.s360938] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2022] [Accepted: 04/27/2022] [Indexed: 11/23/2022] Open
Abstract
Purpose The pharmacological treatment of chronic obstructive pulmonary disease (COPD) is largely based on inhaled bronchodilators. Inspiratory flow and lung deposition are key parameters to be considered in inhaled therapy; however, the relationship between these two parameters, the patient specificities, and the suitability of the inhaler type for COPD management has not been fully addressed. The present study follows a Delphi Panel methodology to find expert consensus on the role of inspiratory flow and lung deposition as key decision factors in COPD inhaled therapy. Methods A two-round Delphi Panel, consisting of 38 statements (items) and completed by 57 Spanish pulmonologists, was carried out to measure the experts' consensus degree with each item. Results A high degree of consensus was reached on most of the items consulted, among these inspiratory flow or inspiratory capacity should be periodically considered when choosing an inhalation device and to ensure the suitability of the inhaler used; the outflow velocity and particle size of the different devices should be considered to ensure adequate lung deposition; an active device (pressurized metered-dose inhalers (pMDI) or soft mist inhalers (SMI)) should be used in patients with low inspiratory flow to achieve adequate lung deposition; and, the use of dry powder inhalers (DPI) should be re-evaluated in patients with severe obstruction and severe exacerbations. Conclusion This study shows the relevance of inspiratory flow and the degree of particle deposition in the lung in the choice of an inhalation device for COPD management, as well as the convenience of an SMI type device in cases of low inspiratory flow. Moreover, it highlights the scarcity of information on the specific features of inhalation devices in COPD guidelines.
Collapse
Affiliation(s)
| | - Adolfo Baloira
- Respiratory Department, University Hospital of Pontevedra, Pontevedra, Spain
| | - Araceli Abad
- Respiratory Department, University Hospital of Getafe, Madrid, Spain
| | - Antonia Fuster
- Respiratory Department, University Hospital Son Llatzer, Palma de Mallorca, Spain
| | | | | | | | - Marta Palop
- Respiratory Department, Hospital of Sagunto, Valencia, Spain
| | - Néstor Soler
- Respiratory Department, Hospital Clinic, Barcelona, Spain
| | - José Luis Velasco
- Respiratory Department, University Hospital Virgen de la Victoria, Málaga, Spain
| |
Collapse
|
18
|
Mahler DA, Niu X, Deering KL, Dembek C. Prospective Evaluation of Exacerbations Associated with Suboptimal Peak Inspiratory Flow Among Stable Outpatients with COPD. Int J Chron Obstruct Pulmon Dis 2022; 17:559-568. [PMID: 35313719 PMCID: PMC8934117 DOI: 10.2147/copd.s353441] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2021] [Accepted: 02/28/2022] [Indexed: 11/23/2022] Open
Abstract
Purpose A suboptimal peak inspiratory flow (PIF) against a dry powder inhaler (DPI) may result in ineffective inhalation of medications, which may affect outcomes. The primary objective of this study was to examine the association between PIF status and COPD exacerbations among outpatients with moderate to very severe COPD. Patients and Methods This was a prospective, observational study of patients from 7 US outpatient centers. PIF was measured using an inspiratory flow meter (In-Check™ DIAL G16) set to medium low resistance. Patients were classified by suboptimal (<60 L/min) or optimal PIF (≥60 L/min). The primary outcome was the proportion of patients with moderate/severe COPD exacerbations collected by medical record review over 12 months. Secondary outcomes were time to first exacerbation and mortality. Results Of 474 patients screened, 38.8% had suboptimal PIF, and 71 patients with optimal PIF were excluded from the study. The enrolled sample included 184 and 219 patients with suboptimal and optimal PIF, respectively. Suboptimal PIF was associated with shorter stature (66.6±4.1 vs 67.8±3.8 inches, P = 0.002), female sex (45.1 vs 34.7%, P = 0.033), Black race (27.2 vs 11.0%, P < 0.001), and greater symptom burden (CAT: 22.3±7.7 vs 19.0±7.0, P < 0.001; mMRC: 2.0±1.1 vs 1.7±1.1, P = 0.003). The proportion of patients with COPD exacerbations at 12 months was not significantly different (29.3 vs 27.9%, P = 0.751). Suboptimal PIF was associated with shorter time to first COPD exacerbation (3.8±2.7 vs 4.9±3.0 months, P = 0.048). The mortality rate at 12 months was higher in the suboptimal cohort but not significantly different (6.5 vs 2.8%, P = 0.073). Conclusion Over one-third of outpatients with stable moderate to very severe COPD had a suboptimal PIF against a medium low resistance DPI. The phenotype of suboptimal PIF was short stature, female, and Black. Suboptimal PIF status was associated with shorter time to moderate/severe COPD exacerbations compared with optimal PIF.
Collapse
Affiliation(s)
- Donald A Mahler
- Geisel School of Medicine, Dartmouth, Hanover, NH, USA and Valley Regional Hospital, Claremont, NH, USA
- Correspondence: Donald A Mahler, Emeritus Professor of Medicine, Geisel School of Medicine, Dartmouth, Director of Respiratory Services, Valley Regional Hospital, 1 Rope Ferry Road, Hanover, NH, 03755, USA, Tel +1 603 542-6777, Fax +1 603 543-5613, Email
| | - Xiaoli Niu
- Sunovion Pharmaceuticals Inc., Marlborough, MA, USA
| | | | | |
Collapse
|
19
|
Leving MT, Kocks J, Bosnic-Anticevich S, Dekhuijzen R, Usmani OS. Relationship between Peak Inspiratory Flow and Patient and Disease Characteristics in Individuals with COPD—A Systematic Scoping Review. Biomedicines 2022; 10:biomedicines10020458. [PMID: 35203667 PMCID: PMC8962311 DOI: 10.3390/biomedicines10020458] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2022] [Revised: 02/09/2022] [Accepted: 02/11/2022] [Indexed: 11/16/2022] Open
Abstract
Optimal delivery of medication via dry powder inhalers, the most commonly prescribed inhaler type, is dependent on a patient achieving a minimum level of inspiratory flow during inhalation. However, measurement of peak inspiratory flow (PIF) against the simulated resistance of a dry powder inhaler is not frequently performed in clinical practice due to time or equipment limitations. Therefore, defining which patient characteristics are associated with lower PIF is critically important to help clinicians optimize their inhaler choice through a more personalized approach to prescribing. The objective of this scoping review was to systematically evaluate patient and disease characteristics determining PIF in patients with chronic obstructive pulmonary disease (COPD). Medline, Cochrane and Embase databases were systematically searched for relevant studies on PIF in patients with COPD published in English between January 2000 and May 2021. The quality of evidence was assessed using a modified Grading of Recommendations Assessment, Development and Evaluation checklist. Of 3382 citations retrieved, 35 publications were included in the review (nine scored as high quality, 13 as moderate, nine as low, and four as very low). Factors correlating with PIF in >70% of papers included both patient characteristics (lower PIF correlated with increased age, female gender, shorter height, decreased handgrip and inspiratory muscle strength, and certain comorbidities) and disease characteristics (lower PIF correlated with markers of lung hyperinflation, lower peak expiratory flow [PEF] and increased disease severity). Other factors correlating with adequate/optimal or improved PIF included education/counseling and exercise/inspiratory muscle training; impaired physical function and errors in inhalation technique/non-adherence were associated with low/suboptimal PIF. In conclusion, clinicians should measure PIF against the simulated resistance of a particular device wherever possible. However, as this often cannot be done due to lack of resources or time, the patient and disease characteristics that influence PIF, as identified in this review, can help clinicians to choose the most appropriate inhaler type for their patients.
Collapse
Affiliation(s)
- Marika T. Leving
- General Practitioners Research Institute, 9713 GH Groningen, The Netherlands;
- Correspondence:
| | - Janwillem Kocks
- General Practitioners Research Institute, 9713 GH Groningen, The Netherlands;
- GRIAC Research Institute, University Medical Center Groningen, University of Groningen, 9700 RB Groningen, The Netherlands
- Observational and Pragmatic Research Institute, Singapore 573969, Singapore
| | - Sinthia Bosnic-Anticevich
- Woolcock Institute of Medical Research, Sydney, NSW 2037, Australia;
- Sydney Pharmacy School, Faculty of Medicine and Health, University of Sydney, Sydney, NSW 2006, Australia
- Sydney Local Health District, Sydney, NSW 2050, Australia
| | | | - Omar S. Usmani
- National Heart and Lung Institute (NHLI), Imperial College London, London SW3 6LY, UK;
- Royal Brompton Hospital, London SW3 6NP, UK
| |
Collapse
|
20
|
Ohar JA, Ferguson GT, Mahler DA, Drummond MB, Dhand R, Pleasants RA, Anzueto A, Halpin DMG, Price DB, Drescher GS, Hoy HM, Haughney J, Hess MW, Usmani OS. Measuring Peak Inspiratory Flow in Patients with Chronic Obstructive Pulmonary Disease. Int J Chron Obstruct Pulmon Dis 2022; 17:79-92. [PMID: 35023914 PMCID: PMC8747625 DOI: 10.2147/copd.s319511] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2021] [Accepted: 10/25/2021] [Indexed: 12/03/2022] Open
Abstract
Dry powder inhalers (DPIs) are breath actuated, and patients using DPIs need to generate an optimal inspiratory flow during the inhalation maneuver for effective drug delivery to the lungs. However, practical and standardized recommendations for measuring peak inspiratory flow (PIF)—a potential indicator for effective DPI use in chronic obstructive pulmonary disease (COPD)—are lacking. To evaluate recommended PIF assessment approaches, we reviewed the Instructions for Use of the In-Check™ DIAL and the prescribing information for eight DPIs approved for use in the treatment of COPD in the United States. To evaluate applied PIF assessment approaches, we conducted a PubMed search from inception to August 31, 2021, for reports of clinical and real-life studies where PIF was measured using the In-Check™ DIAL or through a DPI in patients with COPD. Evaluation of collective sources, including 47 applicable studies, showed that instructions related to the positioning of the patient with their DPI, instructions for exhalation before the inhalation maneuver, the inhalation maneuver itself, and post-inhalation breath-hold times varied, and in many instances, appeared vague and/or incomplete. We observed considerable variation in how PIF was measured in clinical and real-life studies, underscoring the need for a standardized method of PIF measurement. Standardization of technique will facilitate comparisons among studies. Based on these findings and our clinical and research experience, we propose specific recommendations for PIF measurement to standardize the process and better ensure accurate and reliable PIF values in clinical trials and in daily clinical practice.
Collapse
Affiliation(s)
- Jill A Ohar
- Section of Pulmonary, Critical Care, Allergy, and Immunology, School of Medicine, Wake Forest University, Winston-Salem, NC, USA
| | - Gary T Ferguson
- Pulmonary Research Institute of Southeast Michigan, Farmington Hills, MI, USA
| | | | - M Bradley Drummond
- Division of Pulmonary Diseases and Critical Care Medicine, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Rajiv Dhand
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, University of Tennessee Graduate School of Medicine, Knoxville, TN, USA
| | - Roy A Pleasants
- Division of Pulmonary Diseases and Critical Care Medicine, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA.,Department of Quality, University of Michigan, Ann Arbor, MI, USA
| | - Antonio Anzueto
- Pulmonology Section, University of Texas Health, and South Texas Veterans Health Care System, San Antonio, TX, USA
| | - David M G Halpin
- University of Exeter Medical School, College of Medicine and Health, University of Exeter, Exeter, UK
| | - David B Price
- Academic Primary Care, Division of Applied Health Sciences, University of Aberdeen, Aberdeen, UK.,Observational and Pragmatic Research Institute, Singapore
| | - Gail S Drescher
- Pulmonary Services Department, MedStar Washington Hospital Center, Washington, DC, USA
| | - Haley M Hoy
- Transplant Center, Vanderbilt University Medical Center, Nashville, TN, USA
| | - John Haughney
- Academic Primary Care, Division of Applied Health Sciences, University of Aberdeen, Aberdeen, UK
| | | | - Omar S Usmani
- National Heart and Lung Institute, Imperial College London and Royal Brompton Hospital, London, UK
| |
Collapse
|
21
|
Kponee-Shovein K, Marvel J, Ishikawa R, Choubey A, Kaur H, Ngom K, Fakih I, Swartz N, Schatzki T, Signorovitch J. Impact of choice of inhalers for asthma care on global carbon footprint and societal costs: a long-term economic evaluation. J Med Econ 2022; 25:940-953. [PMID: 35686860 DOI: 10.1080/13696998.2022.2088196] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
BACKGROUND While effective asthma control medications reduce the burden of asthma, a significant subgroup of these treatments, namely metered-dose inhalers (MDIs), produce substantial greenhouse gas (GHG) emissions, thus contributing to climate change. This study quantified the global climate impact (i.e. carbon dioxide equivalent [CO2e] emissions) and costs of long-term status quo asthma inhaler use versus alternative scenarios substituting MDIs with propellant-free dry powder inhalers (DPIs). METHODS Three scenarios were evaluated across 10-year (2020-2030) and 50-year (2020-2070) time horizons: A (status quo inhaler use), B and C (2% and 5% year-over-year substitution of MDIs with DPIs, respectively). Global inhaler volumes and costs at baseline were sourced from IQVIA, then projected using UN and WHO trends in per capita GDP, urbanization, and asthma population growth. Inhaler spending was assumed to fall by 90% following generic entry in 2030. The carbon footprint per inhaler and health damage factors for disability-adjusted life years (DALYs) were derived from literature. The US government's central and high-impact estimates for the social cost of carbon (SCC) were used to calculate emissions costs. RESULTS Over 50 years, scenario A resulted in 826 million tonnes of CO2e emissions globally, with an associated SCC between 21% and 65% of the projected global spending on asthma inhalers. In comparison, CO2e emissions were reduced by 38% and 58% in Scenarios B and C, respectively, and DALYs improved by 33 and 51%. Depending on SCC estimates, Scenarios B and C increased global costs by 7.3% and 16.5%, respectively (central SCC), or decreased costs by 4.2% and 2.6% (high-impact SCC) versus Scenario A. Over 10 years, Scenario A resulted in 97 million tonnes of CO2e emissions globally, with an associated SCC between 4.4% and 12.2% of projected spending. In comparison, Scenarios B and C were associated with 12% and 24% reductions in CO2e emissions and improvements in DALYs by 11.5% and 22.7%, respectively. CONCLUSIONS Global efforts by environmental and health-policy decision-makers to substitute currently available MDIs with DPIs for asthma control would result in substantial reductions in GHG emissions with manageable costs, or potential cost savings, depending on the SCC. Policies that decrease use of MDIs warrant global attention.
Collapse
Affiliation(s)
| | | | | | - Abhay Choubey
- Novartis Healthcare Private Limited, Hyderabad, India
| | - Harneet Kaur
- Novartis Healthcare Private Limited, Hyderabad, India
| | | | | | | | | | | |
Collapse
|
22
|
Kondo T, Hibino M, Tanigaki T, Tajiri S, Horiuchi S. Optimal Inhalation Flow Pattern from Turbuhaler Predicted by Laser Photometry. J Aerosol Med Pulm Drug Deliv 2021; 35:139-145. [PMID: 34637629 DOI: 10.1089/jamp.2021.0001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Background: The emitted dose (ED) from most dry powder inhalers (DPIs) is almost independent of peak inspiratory flow (PIF) above a certain value, which is specific to the individual DPI. However, the ED of the Turbuhaler® (TBH) increases linearly with PIF increments. This study investigated the powder clearance and clinical utility of TBH performance features by using the photo-reflection method (PRM), a type of laser photometry. Methods: Pulmicort® (PLM) (containing budesonide only) and Symbicort® (SMB) (drugs with lactose particles) were inspired with a ramp-up pattern of several PIF intensities using a vacuum pump. Time trajectories of particle release and PIF were then compared. Results: The particle-release trajectories from both types of DPIs were similar, consisting of a sharp increment phase (∼0.15 seconds) followed by exponential decay. Both onset to the peak of particle-release time and particle-release times were not affected by PIF changes when the PIF was >40 L/min. EDs from both TBHs were linearly related to PIFs, and the slope of the regression equation for SMB was 2.4-fold larger than that of PLM. The peak of the released particles (PKIED) was also linearly related to PIF. A linear relationship was also observed between ED and PKIED in both TBHs, and these regression lines overlapped. Conclusion: EDs from the TBH were dependent on PKIED. Therefore, rapid, initially strong, and deep inhalation should be advised while using the TBH. PRM could measure the fine and small amount of particles released from the TBH.
Collapse
Affiliation(s)
- Tetsuri Kondo
- Department of Respiratory Medicine, Shonan Fujisawa Tokushukai Hospital, Fujisawa, Japan
| | - Makoto Hibino
- Department of Respiratory Medicine, Shonan Fujisawa Tokushukai Hospital, Fujisawa, Japan
| | - Toshimori Tanigaki
- Department of Respiratory Medicine, Yamachika Memorial General Hospital, Odawara, Japan
| | - Sakurako Tajiri
- Department of Respiratory Medicine, Tokai University Oiso Hospital, Oiso, Japan
| | - Shigeto Horiuchi
- Department of Respiratory Medicine, Shonan Fujisawa Tokushukai Hospital, Fujisawa, Japan
| |
Collapse
|
23
|
Hua JL, Ye XF, Du CL, Xie N, Zhang JQ, Li M, Zhang J. Optimizing inhalation therapy in the aspect of peak inhalation flow rate in patients with chronic obstructive pulmonary disease or asthma. BMC Pulm Med 2021; 21:302. [PMID: 34560863 PMCID: PMC8464087 DOI: 10.1186/s12890-021-01674-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2021] [Accepted: 09/21/2021] [Indexed: 11/11/2022] Open
Abstract
BACKGROUND Pressurized metered dose inhalers (pMDIs) and dry powder inhalers (DPIs) are commonly used drug-delivering devices for patients with chronic airway diseases. Appropriate peak inhalation flow rate (PIFR) and inhaler technique is essential for effective therapy. We aimed at optimizing inhalation therapy through the analysis of PIFRs in patients with chronic obstructive pulmonary disease (COPD) or asthma as well as the effect of technique training using In-Check DIAL® to help patients to achieve their optimal inspiratory flow rates. METHODS The study continuously enrolled patients who were diagnosed as COPD or asthma from respiratory clinics. PIFRs were described and analyzed between the newly-diagnosed and follow-up patients, and the stable and acute exacerbation patients, respectively. Every participant was trained inhaler technique using In-Check DIAL®. PIFRs before and after training was compared by self-control analysis. RESULTS Among a total of 209 patients, the average age was 56.9 years. For DPIs users, 10.8% patients had a PIFR < 30 L/min and 44.1% patients had a PIFR ≥ 60 L/min before technique training. After technique training, scarcely patient (1.5%) had a PIFR < 30 L/min, and 60.5% patients had a PIFR ≥ 60 L/min. The patient's average PIFR increased by 5.6L/min after training. The increase in PIFR before and after training was significant (p < 0.001) for most patients, but no significant variation was found in patients with acute exacerbation (p = 0.822). CONCLUSIONS A considerable number of patients with COPD or asthma were not able to achieve the minimum or optimal PIFR for DPIs. Inhaler training can increase patients' PIFRs and improve their ability to use DPIs. Trail registration The study has registered in chictr.org.cn (ChiCTR1900024707) and been approved by the Ethics Committee of Zhongshan Hospital of Fudan University (B2019-142).
Collapse
Affiliation(s)
- Jian-Lan Hua
- Department of Pulmonary and Critical Care Medicine, Zhongshan Hospital, Shanghai Medical College, Fudan University, 180 Feng Lin Road, Shanghai, 200032, People's Republic of China
| | - Xiao-Fen Ye
- Department of Pharmacy, Zhongshan Hospital, Shanghai Medical College, Fudan University, Shanghai, China
| | - Chun-Ling Du
- Department of Pulmonary, Qingpu Branch of Zhongshan Hospital Affiliated to Fudan University, Shanghai, China
| | - Ning Xie
- Department of Pharmacy, Qingpu Branch of Zhongshan Hospital Affiliated to Fudan University, Shanghai, China
| | - Jie-Qing Zhang
- Department of Pharmacy, Zhongshan Hospital, Shanghai Medical College, Fudan University, Shanghai, China
| | - Man Li
- Department of Pharmacy, Qingpu Branch of Zhongshan Hospital Affiliated to Fudan University, Shanghai, China
| | - Jing Zhang
- Department of Pulmonary and Critical Care Medicine, Zhongshan Hospital, Shanghai Medical College, Fudan University, 180 Feng Lin Road, Shanghai, 200032, People's Republic of China.
| |
Collapse
|
24
|
Melani AS. Inhaler technique in asthma and COPD: challenges and unmet knowledge that can contribute to suboptimal use in real life. Expert Rev Clin Pharmacol 2021; 14:991-1003. [PMID: 33983092 DOI: 10.1080/17512433.2021.1929922] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Introduction: Inhalers are the most commonly used devices for lung drug delivery in asthma and COPD. Inhaler use offers several advantages but requires the user's proper mastery. The issue of inhaler technique is very important as inhaler misuse remains common in real life regardless of the inhaler used and is associated with poor disease control.Areas covered:This narrative review analyses the key-steps of inhaler mastery and the significance of the errors of use for the main devices. There are uncertainties on many tasks of inhaler use and on those variations from recommended steps that are considered as critical errors.Expert opinion: Despite technological advancements, an easy-to-use device is not yet available. Whatever the chosen inhaler, health care givers' proper practical education with the opportunity of feedback learning has a key-role for improving inhaler technique, but is time-consuming, and remains limited to few successful experiences. Newer digital technologies will be applied to the field of inhaler education, but the lack of knowledge on many practical aspects of inhaler technique might be a limit for its extensive implementation. Possibly digital innovation might substantially contribute to reduce inhaler misuse only if clinicians, manufacturers, and subjects will cooperate together on this issue.
Collapse
Affiliation(s)
- Andrea S Melani
- Dipartimento Scienze Mediche, Policlinico Le Scotte, Azienda Ospedaliera Universitaria Senese, Siena, Italy
| |
Collapse
|
25
|
Chan AHY, Pleasants RA, Dhand R, Tilley SL, Schworer SA, Costello RW, Merchant R. Digital Inhalers for Asthma or Chronic Obstructive Pulmonary Disease: A Scientific Perspective. Pulm Ther 2021; 7:345-376. [PMID: 34379316 PMCID: PMC8589868 DOI: 10.1007/s41030-021-00167-4] [Citation(s) in RCA: 32] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2021] [Accepted: 06/21/2021] [Indexed: 11/25/2022] Open
Abstract
Impressive advances in inhalation therapy for patients with asthma and chronic obstructive pulmonary disease (COPD) have occurred in recent years. However, important gaps in care remain, particularly relating to poor adherence to inhaled therapies. Digital inhaler health platforms which incorporate digital inhalers to monitor time and date of dosing are an effective disease and medication management tool, promoting collaborative care between clinicians and patients, and providing more in-depth understanding of actual inhaler use. With advances in technology, nearly all inhalers can be digitalized with add-on or embedded sensors to record and transmit data quantitating inhaler actuations, and some have additional capabilities to evaluate inhaler technique. In addition to providing an objective and readily available measure of adherence, they allow patients to interact with the device directly or through their self-management smartphone application such as via alerts and recording of health status. Clinicians can access these data remotely and during patient encounters, to better inform them about disease status and medication adherence and inhaler technique. The ability for remote patient monitoring is accelerating interest in and the use of these devices in clinical practice and research settings. More than 20 clinical studies of digital inhalers in asthma or COPD collectively show improvement in medication adherence, exacerbation risk, and patient outcomes with digital inhalers. These studies support previous findings about patient inhaler use and behaviors, but with greater granularity, and reveal some new findings about patient medication-taking behaviors. Digital devices that record inspiratory flows with inhaler use can guide proper inhaler technique and may prove to be a clinically useful lung function measure. Adoption of digital inhalers into practice is still early, and additional research is needed to determine patient and clinician acceptability, the appropriate place of these devices in the therapeutic regimen, and their cost effectiveness. Video: Digital Inhalers for Asthma or Chronic Obstructive Pulmonary Disease: A Scientific Perspective (MP4 74535 kb)
Collapse
Affiliation(s)
- Amy H. Y. Chan
- Faculty of Medical and Health Sciences, University of Auckland, Auckland, 1023 New Zealand
| | - Roy A. Pleasants
- Division of Pulmonary Diseases and Critical Care Medicine, University of North Carolina Chapel Hill, Chapel Hill, NC USA
| | - Rajiv Dhand
- Division of Pulmonary and Critical Care Medicine, University of Tennessee Graduate School of Medicine, Knoxville, TN USA
| | - Stephen L. Tilley
- Division of Pulmonary Diseases and Critical Care Medicine, University of North Carolina Chapel Hill, Chapel Hill, NC USA
| | - Stephen A. Schworer
- Division of Rheumatology, Allergy, and Immunology, Department of Medicine, University of North Carolina Chapel Hill, Chapel Hill, NC USA
| | - Richard W. Costello
- Royal College of Surgeons Ireland, 123 St Stephen’s Green, Dublin 2, D02 YN77 Ireland
| | - Rajan Merchant
- Dignity Health Woodland Clinic, 632 W Gibson Rd, Woodland, CA USA
| |
Collapse
|
26
|
Ding N, Zhang W, Wang Z, Bai C, He Q, Dong Y, Feng X, Zhang J, Gao S. Prevalence and Associated Factors of Suboptimal Daily Peak Inspiratory Flow and Technique Misuse of Dry Powder Inhalers in Outpatients with Stable Chronic Airway Diseases. Int J Chron Obstruct Pulmon Dis 2021; 16:1913-1924. [PMID: 34188467 PMCID: PMC8236256 DOI: 10.2147/copd.s311178] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2021] [Accepted: 06/01/2021] [Indexed: 11/23/2022] Open
Abstract
Purpose The present study aimed to investigate the prevalence and associated factors of suboptimal daily peak inspiratory flow (PIF) and technical misuse of three commonly used dry powder inhalers (DPIs) in outpatients with stable chronic airway diseases. Patients and Methods Included in this study were 85 outpatients with stable asthma, chronic obstructive pulmonary disease (COPD), or asthma-COPD Overlap (ACO) and had previously used any of Turbuhaler® (TUR), Diskus® (DIS), HandiHaler® (HAN) between December 2018 and September 2019. The patient’s daily PIF against the resistance of a specific DPI and operation technique was investigated by two pharmacists by using In-Check DIAL G16 and a checklist. Results Of the 85 patients, the proportion of patients with a suboptimal daily PIF and technical misuse was 38.8% and 65.9%, respectively. In logistic regression, we observed that the factors that increase the risk for suboptimal daily PIF were age (OR=1.06) and combination with respiratory diseases (OR = 6.59). The factor that decreases the risk for misuse was the higher education level (OR =0.63). Conclusion Even if patients have received training at the time of initial prescription, the standardization of the use of DPIs by patients in our center was still unoptimistic. Age and combined with respiratory diseases were associated with suboptimal PIF. Higher education level decreased the incidence of technique misuse.
Collapse
Affiliation(s)
- Nan Ding
- Department of Pharmacy, First Affiliated Hospital of Naval Medical University (Changhai Hospital), Shanghai, People's Republic of China
| | - Wei Zhang
- Department of Pharmacy, Shanghai Pulmonary Hospital, Tongji University School of Medicine, Shanghai, People's Republic of China
| | - Zhuo Wang
- Department of Pharmacy, First Affiliated Hospital of Naval Medical University (Changhai Hospital), Shanghai, People's Republic of China
| | - Chong Bai
- Department of Respiratory and Critical Care Medicine, First Affiliated Hospital of Naval Medical University (Changhai Hospital), Shanghai, People's Republic of China
| | - Qian He
- Department of Health Statistics, Faculty of Health Service, Naval Medical University, Shanghai, People's Republic of China
| | - Yuchao Dong
- Department of Respiratory and Critical Care Medicine, First Affiliated Hospital of Naval Medical University (Changhai Hospital), Shanghai, People's Republic of China
| | - Xiumin Feng
- Department of Respiratory and Critical Care Medicine, Changji Branch of First Affiliated Hospital of Xinjiang Medical University, Xinjiang, People's Republic of China
| | - Jingxi Zhang
- Department of Respiratory and Critical Care Medicine, First Affiliated Hospital of Naval Medical University (Changhai Hospital), Shanghai, People's Republic of China
| | - Shen Gao
- Department of Pharmacy, First Affiliated Hospital of Naval Medical University (Changhai Hospital), Shanghai, People's Republic of China
| |
Collapse
|
27
|
Flow Structure and Particle Deposition Analyses for Optimization of a Pressurized Metered Dose Inhaler (pMDI) in a Model of Tracheobronchial Airway. Eur J Pharm Sci 2021; 164:105911. [PMID: 34129919 DOI: 10.1016/j.ejps.2021.105911] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2021] [Revised: 06/10/2021] [Accepted: 06/11/2021] [Indexed: 01/13/2023]
Abstract
Inhalation therapy plays an important role in management or treatment of respiratory diseases such asthma and chronic obstructive pulmonary diseases (COPDs). For decades, pressurized metered dose inhalers (pMDIs) have been the most popular and prescribed drug delivery devices for inhalation therapy. The main objectives of the present computational work are to study flow structure inside a pMDI, as well as transport and deposition of micron-sized particles in a model of human tracheobronchial airways and their dependence on inhalation air flow rate and characteristic pMDI parameters. The upper airway geometry, which includes the extrathoracic region, trachea, and bronchial airways up to the fourth generation in some branches, was constructed based on computed tomography (CT) images of an adult healthy female. Computational fluid dynamics (CFD) simulation was employed using the k-ω model with low-Reynolds number (LRN) corrections to accomplish the objectives. The deposition results of the present study were verified with the in vitro deposition data of our previous investigation on pulmonary drug delivery using a hollow replica of the same airway geometry as used for CFD modeling. It was found that the flow structure inside the pMDI and extrathoracic region strongly depends on inhalation flow rate and geometry of the inhaler. In addition, regional aerosol deposition patterns were investigated at four inhalation flow rates between 30 and 120 L/min and for 60 L/min yielding highest deposition fractions of 24.4% and 3.1% for the extrathoracic region (EX) and the trachea, respectively. It was also revealed that particle deposition was larger in the right branches of the bronchial airways (right lung) than the left branches (left lung) for all of the considered cases. Also, optimization of spray characteristics showed that the optimum values for initial spray velocity, spray cone angle and spray duration were 100 m/s, 10° and 0.1 sec, respectively. Moreover, spray cone angle, more than any other of the investigated pMDI parameters can change the deposition pattern of inhaled particles in the airway model. In conclusion, the present investigation provides a validated CFD model for particle deposition and new insights into the relevance of flow structure for deposition of pMDI-emitted pharmaceutical aerosols in the upper respiratory tract.
Collapse
|
28
|
Baloira A, Abad A, Fuster A, García Rivero JL, García-Sidro P, Márquez-Martín E, Palop M, Soler N, Velasco JL, González-Torralba F. Lung Deposition and Inspiratory Flow Rate in Patients with Chronic Obstructive Pulmonary Disease Using Different Inhalation Devices: A Systematic Literature Review and Expert Opinion. Int J Chron Obstruct Pulmon Dis 2021; 16:1021-1033. [PMID: 33907390 PMCID: PMC8064620 DOI: 10.2147/copd.s297980] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2021] [Accepted: 03/21/2021] [Indexed: 12/20/2022] Open
Abstract
BACKGROUND Our aim was to describe: 1) lung deposition and inspiratory flow rate; 2) main characteristics of inhaler devices in chronic obstructive pulmonary disease (COPD). METHODS A systematic literature review (SLR) was conducted to analyze the features and results of inhaler devices in COPD patients. These devices included pressurized metered-dose inhalers (pMDIs), dry powder inhalers (DPIs), and a soft mist inhaler (SMI). Inclusion and exclusion criteria were established, as well as search strategies (Medline, Embase, and the Cochrane Library up to April 2019). In vitro and in vivo studies were included. Two reviewers selected articles, collected and analyzed data independently. Narrative searches complemented the SLR. We discussed the results of the reviews in a nominal group meeting and agreed on various general principles and recommendations. RESULTS The SLR included 71 articles, some were of low-moderate quality, and there was great variability regarding populations and outcomes. Lung deposition rates varied across devices: 8%-53% for pMDIs, 7%-69% for DPIs, and 39%-67% for the SMI. The aerosol exit velocity was high with pMDIs (more than 3 m/s), while it is much slower (0.84-0.72 m/s) with the SMI. In general, pMDIs produce large-sized particles (1.22-8 μm), DPIs produce medium-sized particles (1.8-4.8 µm), and 60% of the particles reach an aerodynamic diameter <5 μm with the SMI. All inhalation devices reach central and peripheral lung regions, but the SMI distribution pattern might be better compared with pMDIs. DPIs' intrinsic resistance is higher than that of pMDIs and SMI, which are relatively similar and low. Depending on the DPI, the minimum flow inspiratory rate required was 30 L/min. pMDIs and SMI did not require a high inspiratory flow rate. CONCLUSION Lung deposition and inspiratory flow rate are key factors when selecting an inhalation device in COPD patients.
Collapse
Affiliation(s)
- Adolfo Baloira
- Complejo Hospitalario Universitario de Pontevedra, Pontevedra, Spain
| | | | - Antonia Fuster
- Hospital Unvidersitario Son Llàtzer, Palma de Mallorca, Spain
| | | | | | - Eduardo Márquez-Martín
- Hospital Virgen del Rocío, Sevilla, Spain
- CIBERES, Instituto de Salud Carlos III, Madrid, Spain
| | | | | | - J L Velasco
- Hospital Universitario Virgen de la Victoria, Málaga, Spain
| | | |
Collapse
|
29
|
Harb HS, Ibrahim Laz N, Rabea H, Abdelrahim MEA. Real-life assessment of chronic obstructive pulmonary disease patient performance with different inhalers. Int J Clin Pract 2021; 75:e13905. [PMID: 33278856 DOI: 10.1111/ijcp.13905] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/02/2020] [Accepted: 12/01/2020] [Indexed: 12/18/2022] Open
Abstract
PURPOSE This study aimed to evaluate handling of six common inhalers and to determine correlations between correct inhaler technique and patient demographics/ clinical variables. METHODS A total of 180 chronic obstructive pulmonary disease (COPD) patients were crossed-over to handle their past-experienced inhalers among (pMDI, Aerolizer, Handihaler, Breezhaler, Turbohaler, and Diskus) randomly, without receiving verbal or demonstrative instruction (baseline assessment). Inhaler technique was assessed using previously defined checklists. The correct use of the inhaler was then demonstrated and the patient was evaluated for inhaler use again. Demonstration was repeated until a correct technique was achieved. Number of counselling attempts needed to a complete right handling, patient demographics and clinical variables were recorded. RESULTS The mean percentage of total correct steps showed that pMDI is significantly lower than all other inhalers (76.01 ± 12.61 vs 84.18 ± 10.87, 84.60 ± 12.10, 85.91 ± 9.82, 90.63 ± 9.29 and 91 ± 10.22 for Diskus, Turbohaler, Aerolizer, Handihaler and Breezhaler, respectively, at P < .001). Breezhaler showed the lowest percentage of participants with at least 1 critical error (20%) however, pMDI showed the highest percentage (85.19%) at P < .05. Breezhaler showed that the highest percentage of participants achieved a complete right handling after 1st counselling attempt, however, pMDI was the only inhaler included in a 3rd and 4th counselling attempts (5.93% and 0.74%, respectively). Weak and very weak correlations were found between total correct steps and demographics/clinical variables. CONCLUSIONS pMDI is not preferable for handling by COPD patients. DPIs vary in ease of use, so that inhaler therapy must be individualised on basis of patient handling assessment with repeated counselling.
Collapse
Affiliation(s)
- Hadeer S Harb
- Clinical Pharmacy Department, Faculty of Pharmacy, Beni-Suef University, Beni-Suef, Egypt
| | - Nabila Ibrahim Laz
- Department of Chest Diseases, Faculty of Medicine, Beni-Suef University, Beni-Suef, Egypt
| | - Hoda Rabea
- Clinical Pharmacy Department, Faculty of Pharmacy, Beni-Suef University, Beni-Suef, Egypt
| | - Mohamed E A Abdelrahim
- Clinical Pharmacy Department, Faculty of Pharmacy, Beni-Suef University, Beni-Suef, Egypt
| |
Collapse
|
30
|
Mahler DA, Halpin DMG. Peak Inspiratory Flow as a Predictive Therapeutic Biomarker in COPD. Chest 2021; 160:491-498. [PMID: 33812852 DOI: 10.1016/j.chest.2021.03.049] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2021] [Revised: 03/21/2021] [Accepted: 03/28/2021] [Indexed: 11/19/2022] Open
Abstract
Biomarkers in COPD may be clinical (prior exacerbation history), physiologic (FEV1), or blood based (eosinophil count or fibrinogen level). Recent interest in using biomarkers to predict response to therapy in clinical practice has emerged. The benefits of inhaled therapy depend on the correct use of the inhaler, including an appropriate inspiratory flow. Of the available delivery systems, dry powder inhalers are unique because they have an internal resistance, are breath actuated, and are flow dependent. Ideally, the user inhales "forcefully" to generate turbulent energy (determined by an individual's inspiratory flow and the resistance of the device) within the device that disaggregates the powder so that the individual inhales the medication particles into the lower respiratory tract. Because of specific features of dry powder inhalers and the required optimal inspiratory flow, an unmet need exists to identify individuals who are likely or unlikely to benefit from dry powder medications. Peak inspiratory flow, defined as the maximum airflow generated during inhalation against the simulated resistance of a dry powder inhaler, is a physiologic measure that has biological plausibility, has good test characteristics (repeatability and reliability), and is generalizable. Current evidence supports peak inspiratory flow as a predictive therapeutic biomarker to optimize therapy in both outpatients with COPD as well as those hospitalized for an exacerbation before discharge. This approach is consistent with the precepts of precision medicine, which considers differences in a person's biological features, exposure, and lifestyle to prevent and treat disease.
Collapse
Affiliation(s)
- Donald A Mahler
- Department of Medicine, Geisel School of Medicine at Dartmouth, Hanover, NH; Department of Respiratory Services, Valley Regional Hospital, Claremont, NH.
| | - David M G Halpin
- Department of Respiratory Medicine, University of Exeter Medical School, College of Medicine and Health, University of Exeter, Exeter, England
| |
Collapse
|
31
|
Petite SE, Hess MW, Wachtel H. The Role of the Pharmacist in Inhaler Selection and Education in Chronic Obstructive Pulmonary Disease. J Pharm Technol 2021; 37:95-106. [PMID: 34752567 PMCID: PMC7953076 DOI: 10.1177/8755122520937649] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Objective: To review the role of pharmacists in educating and monitoring patients with chronic obstructive pulmonary disease (COPD) on inhalation technique. Data Sources: A PubMed search (January 2000 to May 2020) was performed using the following keywords and associated medical subject headings: adherence, chronic obstructive pulmonary disease/COPD, education, inhaler, pharmacist, and technique. Study Selection and Data Extraction: The search was conducted to identify English language articles highlighting the importance of correct inhaler technique in COPD management and benefits of pharmacist inhaler training such as improved adherence, quality of life (QoL), and disease control. Randomized controlled trials, retrospective studies, observational studies, systematic reviews, and meta-analysis reporting pharmacist training were included. Data Synthesis: This review summarizes that incorrect inhaler use negatively affects treatment outcomes, prognosis, and QoL. Pharmacists are in a unique position to educate and monitor patients with COPD on optimal inhaler technique and an individualized, multifactorial approach to COPD management involving pharmacists could provide cost-effective patient care and improve adherence and minimize inhaler misuse. Several strategies used by pharmacists can optimize patient inhaler use, such as face-to-face technique demonstrations, the "teach-back" method, telemonitoring, instructional videos, or informational leaflets. An individualized action plan involving education and regular monitoring of inhaler use further enhances optimal adherence and disease management. Conclusions: As pharmacists are easily accessible to both patients and health care providers, they are ideally placed to play an important role in the enhancement of education on, and continuous assessment of, optimal inhaler technique, thereby improving adherence, disease control, and QoL.
Collapse
Affiliation(s)
| | - Michael W. Hess
- WMed Health, Western Michigan University, Kalamazoo, MI, USA
| | - Herbert Wachtel
- Boehringer Ingelheim Pharma GmbH & Co KG, Ingelheim am Rhein, Germany
| |
Collapse
|
32
|
Molimard M, Kottakis I, Jauernig J, Lederhilger S, Nikolaev I. Performance Characteristics of Breezhaler ® and Aerolizer ® in the Real-World Setting. Clin Drug Investig 2021; 41:415-424. [PMID: 33768480 PMCID: PMC8149341 DOI: 10.1007/s40261-021-01021-w] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/06/2021] [Indexed: 12/01/2022]
Abstract
The evaluation of errors in use with different inhaler devices is challenging to quantify as there are a number of definitions of critical and non-critical errors with respect to inhaler use; in addition, performance characteristics of the device, such as airflow resistance, can also influence effective use in the real-world setting. Repeated observations and checking/correcting inhaler use are essential to optimise clinical effectiveness of inhaled therapy in patients. Breezhaler® is a single unit-dose dry powder inhaler used in chronic obstructive pulmonary disease and in asthma (budesonide) that has low airflow resistance, making it easier for patients of varying disease severities to achieve the inhalation flow rate required for lung deposition of treatment. Similar to Breezhaler®, the Aerolizer® is a single unit-dose dry powder inhaler used in asthma management with low airflow resistance. Studies have shown relatively low rates of critical errors with Breezhaler® and Aerolizer®, with similarities in the critical errors reported; these data on critical errors together with similarities in the usability of Breezhaler® and Aerolizer® further support the functional similarity between the two devices in both asthma and chronic obstructive pulmonary disease. Breezhaler® also has patient-feedback features, including use of a transparent drug capsule that can be checked after inhalation to see it is empty. The low resistance of the dose-confirming Breezhaler® results in less inspiratory effort being required by patients for its effective use, which allows the device to be used effectively across a wide age range of patients and disease severities.
Collapse
Affiliation(s)
- Mathieu Molimard
- Service de Pharmacologie Médicale, CHU de Bordeaux-Université de Bordeaux-INSERM CR1219, 33076, Bordeaux Cedex, France.
| | | | | | | | | |
Collapse
|
33
|
Chetta A, Yorgancioglu A, Scuri M, Barile S, Guastalla D, Dekhuijzen PNR. Inspiratory flow profile and usability of the NEXThaler, a multidose dry powder inhaler, in asthma and COPD. BMC Pulm Med 2021; 21:65. [PMID: 33632183 PMCID: PMC7905605 DOI: 10.1186/s12890-021-01430-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2020] [Accepted: 02/03/2021] [Indexed: 11/10/2022] Open
Abstract
Background Inhaler selection is important when managing respiratory conditions; a patient’s inhalation technique should be appropriate for the selected device, and patients should ideally be able to use a device successfully regardless of disease severity. The NEXThaler is a multidose dry-powder inhaler with a breath-actuated mechanism (BAM) and dose counter that activates only following inhalation, so effectively an ‘inhalation counter’. We assessed inspiratory flow through the NEXThaler in two studies and examined whether inhalation triggered the BAM.
Methods The two studies were open-label, single-arm, and single visit. One study recruited patients with asthma aged ≥ 18 years; the other recruited patients with chronic obstructive pulmonary disease (COPD) aged ≥ 40 years. All patients inhaled twice through a placebo NEXThaler. The inspiratory profile through the device was assessed for each inhalation using acoustic monitoring, with flow at and time to BAM firing, peak inspiratory flow (PIF), and total inhalation time assessed. Results A total of 40 patients were enrolled in the asthma study: 20 with controlled asthma and 20 with partly controlled/uncontrolled asthma. All patients were able to trigger the BAM, as evidenced by the inhalation counter activating on closing the device. Mean flow at BAM firing following first inhalation was 35.0 (range 16.3–52.3) L/min; mean PIF was 64.6 (35.0–123.9) L/min. A total of 72 patients were enrolled in the COPD study, with data analysed for 69 (mean forced expiratory volume in 1 s 48.7% predicted [17–92%]). As with the asthma study, all patients, regardless of airflow limitation, were able to trigger the BAM. Mean flow at BAM firing following first inhalation was 41.9 (26.6–57.1) L/min; mean PIF was 68.0 (31.5–125.4) L/min. Device usability was rated highly in both studies, with 5 min sufficient to train the patients, and a click heard shortly after inhalation in all cases (providing feedback on BAM firing). Conclusions Inhalation flows triggering the BAM in the NEXThaler were similar between patients with controlled and partly controlled/uncontrolled asthma, and were similar across COPD airflow limitation. All enrolled patients were able to activate the device. Supplementary Information The online version contains supplementary material available at 10.1186/s12890-021-01430-9.
Collapse
Affiliation(s)
- Alfredo Chetta
- Respiratory Disease and Lung Function Unit, Department of Medicine and Surgery, University of Parma, Parma, Italy.
| | - Arzu Yorgancioglu
- Department of Pulmonology, Medical Faculty, Celal Bayar University, Manisa, Turkey
| | | | | | | | | |
Collapse
|
34
|
Abadelah M, Abdalla G, Chrystyn H, Larhrib H. Gaining an insight into the importance of each inhalation manoeuvre parameter using altered patients’ inhalation profiles. J Drug Deliv Sci Technol 2021. [DOI: 10.1016/j.jddst.2020.102181] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
|
35
|
Nakada H, Aomori T, Mochizuki M. Effect of a lever aid on hand strength required for using a handheld inhaler correctly. Int J Pharm 2021; 596:120249. [PMID: 33516902 DOI: 10.1016/j.ijpharm.2021.120249] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2020] [Revised: 12/24/2020] [Accepted: 01/06/2021] [Indexed: 11/19/2022]
Abstract
In the treatment of asthma and chronic obstructive pulmonary disease, using a lever aid to improve drug delivery from an inhaler is recommended for patients with poor muscle strength. However, no studies have investigated the effect on hand strength of using a lever aid. Here, we measured hand strength before and after operating a lever aid and tried to predict the required strength. We compared the pinch force required to activate a pressurized metered dose inhaler (pMDI) and a dry powder inhaler as well as the rotational torque required to activate a soft mist inhaler (SMI) before and after attaching a lever aid. We then assessed the correlation between the theoretical and measured pinch force after fitting the lever aid. Use of the lever aid significantly reduced the pinch force required for pMDI operation from 26.13-48.74 N to 4.90-16.87 N. In contrast, using a lever aid significantly reduced the force needed to rotate SMI, although the rotational torque required to operate did not change. There was a significant positive correlation between the theoretical and measured pinch forces required to activate a pMDI fitted with a lever aid. Using a lever aid will increase the number of patients who can use this device.
Collapse
Affiliation(s)
- Hideo Nakada
- Division of Hospital Pharmacy Science, Keio University Faculty of Pharmacy, Japan.
| | - Tohru Aomori
- Division of Hospital Pharmacy Science, Keio University Faculty of Pharmacy, Japan; Department of Pharmacy, Keio University Hospital, Japan
| | - Mayumi Mochizuki
- Division of Hospital Pharmacy Science, Keio University Faculty of Pharmacy, Japan
| |
Collapse
|
36
|
Kerwin EM, Murray L, Niu X, Dembek C. Clinically Important Deterioration Among Patients with Chronic Obstructive Pulmonary Disease (COPD) Treated with Nebulized Glycopyrrolate: A Post Hoc Analysis of Pooled Data from Two Randomized, Double-Blind, Placebo-Controlled Studies. Int J Chron Obstruct Pulmon Dis 2020; 15:2309-2318. [PMID: 33061349 PMCID: PMC7535937 DOI: 10.2147/copd.s267249] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2020] [Accepted: 08/11/2020] [Indexed: 12/22/2022] Open
Abstract
Purpose Using a composite endpoint, pooled data from two 12-week Phase III placebo-controlled trials (GOLDEN 3, NCT02347761; GOLDEN 4, NCT02347774) were analyzed to determine whether glycopyrrolate inhalation solution (25 mcg and 50 mcg) administered twice daily (BID) via the eFlow® Closed System nebulizer (GLY) reduced the risk of clinically important deterioration (CID) in patients with moderate-to-very-severe COPD. Methods CID was defined as ≥100-mL decrease from baseline in post-bronchodilator trough forced expiratory volume in one second (FEV1), or ≥4-unit increase in baseline St. George's Respiratory Questionnaire (SGRQ) total score, or moderate/severe exacerbation. The relative treatment effect of GLY versus placebo on the odds of CID (any and by component endpoints) was expressed as the odds ratio (OR) and 95% confidence interval (CI). Subgroups categorized by age (<65/≥65 years), sex, smoking status (current/former), long-acting beta agonist (LABA) use, FEV1 (<50%/≥50%), and peak inspiratory flow rate (PIFR) (<60 L/min/≥60 L/min) were analyzed. Results Compared to placebo, GLY 25 mcg and 50 mcg BID over 12 weeks significantly reduced the risk of CID by 50% (OR: 0.50 [0.37-0.68]) and 40% (OR: 0.60 [0.44-0.80]), respectively. Subjects treated with GLY 25 mcg BID were 59% less likely to experience CID in FEV1 (OR: 0.41 [0.27-0.62]) and 48% less likely to perceive CID in health status (OR: 0.52 [0.37-0.73]). Statistically significant reductions were also observed at the higher dose. The incidence of moderate/severe exacerbations was low and comparable among the cohorts. GLY 25 mcg BID was significantly more effective than placebo (p<0.05) in preventing CID irrespective of age, smoking status, LABA use, COPD severity, or PIFR. Subjects <65 years (OR 0.45 [0.29-0.68]) and those with PIFR <60 L/min (OR 0.36 [0.20-0.67]) exhibited the largest benefit. Conclusion Nebulized GLY over 12 weeks significantly reduced the risk of CID and provided greater short-term stability in patients with moderate-to-very-severe COPD.
Collapse
Affiliation(s)
- Edward M Kerwin
- Clinical Research Institute of Southern Oregon, Medford, OR, USA
| | | | - Xiaoli Niu
- Sunovion Pharmaceuticals Inc., Marlborough, MA, USA
| | | |
Collapse
|
37
|
Zhang W, Xu L, Gao S, Ding N, Shu P, Wang Z, Li Y. Technical Evaluation of Soft Mist Inhaler Use in Patients with Chronic Obstructive Pulmonary Disease: A Cross-Sectional Study. Int J Chron Obstruct Pulmon Dis 2020; 15:1471-1479. [PMID: 32606655 PMCID: PMC7319532 DOI: 10.2147/copd.s253338] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2020] [Accepted: 05/22/2020] [Indexed: 11/23/2022] Open
Abstract
Background Proper inhaler technique is highly relevant to the effective management of chronic obstructive pulmonary disease (COPD). The tiotropium bromide spray (TBS) (Spiriva® Respimat®) is a soft mist inhaler (SMI) preferred by patients to pressurized metered-dose inhalers (pMDIs) and dry powder inhalers (DPIs) because of its convenience in use. However, the technique of using TBS inhaler in the real world is unclear. Objective To evaluate techniques in using TBS inhaler and investigate the association between the patient characteristics and the correct use of TBS inhaler. Methods This cross-sectional study enrolled 74 COPD patients who used TBS inhaler device for more than 3 months. The sociodemographic and clinical characteristics of the patients were recorded. The technique of using TBS inhaler was evaluated step by step. Incorrect use was defined as the patient’s inability to complete the key steps in the inhalation manoeuvre. The percentage of incorrect use was compared between the groups. Risk factors related to incorrect use were analyzed by logistic regression analysis. Results Of the 74 participants, only 2 (2.7%) patients completed all the steps correctly, and 48 (64.9%) patients misused the key steps in the inhalation manoeuvre. Incorrect preparation of the TBS inhaler for the first use was the most frequently misused step, accounting for 77.0%. Factors associated with misuse of TBS inhaler included the educational background (p=0.010), living state (p=0.031) and COPD assessment test (CAT) score (p=0.005) of the patients. Additionally, logistic regression analysis showed that the COPD duration was significantly associated with the incorrect use (p=0.019). Compared with patients with a higher educational background, patients with an elementary school background [OR 11652.99, CI: 22.72–5975697.72], junior high school background [OR 7187.78, CI: 16.41–3146787] and high school background [OR 1563, CI: 4.27–572329.67] were more likely to misuse TBS inhaler. Patients living with their spouses alone were also more likely to commit errors in using TBS inhaler as compared with those living with their children [OR 12.29, CI of 1.14–1.96]. Clinical factors like the COPD symptoms were relative to the technical use of the device. Better technique was accompanied by a lower CAT score [OR 1.49, CI of 1.14–1.96]. Conclusion The incorrect use of TBS inhaler was common in COPD patients. Healthcare providers should not only teach the patients about the drug preparation but help them use the inhaler correctly. Special attention should be paid to patients with a short COPD duration and a low educational background and those who live without the company of their children. Proper use of TBS inhaler can significantly improve the symptom control of COPD patients.
Collapse
Affiliation(s)
- Wei Zhang
- Department of Pharmacy, Shanghai Pulmonary Hospital, Tongji University School of Medicine, Shanghai 200433, People's Republic of China
| | - Lili Xu
- Department of Pharmacy, Shanghai Pulmonary Hospital, Tongji University School of Medicine, Shanghai 200433, People's Republic of China
| | - Shen Gao
- Department of Pharmacy, Changhai Hospital Affiliated to The Second Military Medical University, Shanghai 200433, People's Republic of China
| | - Nan Ding
- Department of Pharmacy, Changhai Hospital Affiliated to The Second Military Medical University, Shanghai 200433, People's Republic of China
| | - Ping Shu
- Department of Pharmacy, Shanghai Pulmonary Hospital, Tongji University School of Medicine, Shanghai 200433, People's Republic of China
| | - Zhuo Wang
- Department of Pharmacy, Changhai Hospital Affiliated to The Second Military Medical University, Shanghai 200433, People's Republic of China
| | - Yuping Li
- Department of Pharmacy, Shanghai Pulmonary Hospital, Tongji University School of Medicine, Shanghai 200433, People's Republic of China
| |
Collapse
|
38
|
Hua J, Zhang W, Cao HF, Du CL, Ma JY, Zuo YH, Zhang J. Effect of PIFR-based optimised inhalation therapy in patients recovering from acute exacerbation of chronic obstructive pulmonary disease: protocol of a prospective, multicentre, superiority, randomised controlled trial. BMJ Open 2020; 10:e034804. [PMID: 32385061 PMCID: PMC7228517 DOI: 10.1136/bmjopen-2019-034804] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
INTRODUCTION Acute exacerbation (AE) is a major cause of disease progression and death in patients with chronic obstructive pulmonary disease (COPD), accounting for majority of medical expenditures. Correct inhalation therapy is effective in preventing AE attacks. However, inappropriate usage of dry powder inhaler, partially due to the unrecovered peak inhalation flow rate (PIFR) after acute exacerbation of COPD (AECOPD), results in increased risk of early treatment failure. Therefore, we designed a multicentre, randomised clinical trial to determine whether PIFR-based optimised inhalation therapy and training on inhaler usage at discharge could effectively reduce early treatment failure events. METHODS AND ANALYSIS A total of 416 hospitalised patients just recovering from AECOPD will be recruited and equally randomised into the PIFR group and the control group at a 1:1 ratio. The PIFR group will receive additive support before discharge, including choice of PIFR-guided inhaler and education on its usage. PIFR is measured by InCheck DIAL. In comparison, the control group will receive inhalers based on judgement of the respiratory physician. The primary outcome of the study is 30-day treatment failure rate. Other endpoints include PIFR, error rate of inhalation device use, satisfaction with inhalation devices, 30-day mortality, 90-day mortality, symptoms and quality of life of patients, and COPD-related treatment costs. ETHICS AND DISSEMINATION The trial has been approved by the Ethics Committee of Zhongshan Hospital of Fudan University (B2019-142). Participants will be screened and enrolled from hospitalised patients with AECOPD by clinicians, with no public advertisement for recruitment. After the trial has completed, the results will be reported to the public through conference presentations and peer-reviewed journals. TRIAL REGISTRATION NUMBER NCT04000958.
Collapse
Affiliation(s)
- Jianlan Hua
- Department of Pulmonary and Critical Care Medicine, Zhongshan Hospital Fudan University, Shanghai, China
| | - Wei Zhang
- Department of Biostatistics, Fudan University, Shanghai, China
| | - Hui-Fang Cao
- Department of Pulmonary, Shanghai Jing'an District Central Hospital, Shanghai, China, Shanghai, China
| | - Chun-Ling Du
- Department of Pulmonary, Shanghai Qingpu District Central Hospital, Shanghai, China
| | - Jia-Yun Ma
- Department of Pulmonary, North Branch of Shanghai Ninth People's Hospital, Shanghai, China
| | - Yi-Hui Zuo
- Department of Pulmonary and Critical Care Medicine, Zhongshan Hospital Fudan University, Shanghai, China
| | - Jing Zhang
- Department of Pulmonary and Critical Care Medicine, Zhongshan Hospital Fudan University, Shanghai, China
| |
Collapse
|
39
|
Inappropriate Peak Inspiratory Flow Rate with Dry Powder Inhaler in Chronic Obstructive Pulmonary Disease. Sci Rep 2020; 10:7271. [PMID: 32350352 PMCID: PMC7190738 DOI: 10.1038/s41598-020-64235-6] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2020] [Accepted: 04/13/2020] [Indexed: 11/08/2022] Open
Abstract
Optimal peak inspiratory flow rate (PIFR) is crucial for optimizing dry powder inhaler (DPI) effectiveness for chronic obstructive pulmonary disease (COPD). This study provide an insight that there was a substantial proportion of improper PIFRs (not only insufficient but also excessive) among COPD patients using DPIs. We enrolled 138 COPD patients from a medical center in Taiwan and measured PIFRs against different internal resistances of DPIs. Proportion of excessive, optimal, suboptimal, and insufficient PIFRs were 2%, 54%, 41%, 3%, respectively, against medium-high resistance; 2%, 77%, 20%, 1%, respectively, against medium resistance; 27%, 63%, 9%, 1%, respectively, against medium-low resistance; and 42%, 57%, 1%, 0%, respectively, against low resistance (p < 0.01). Although most PIFRs against medium-high (54%), medium (77%), medium-low (63%) and low (57%) resistance were optimal, a substantial proportion of PIFRs against low resistance were excessive (42%, p < 0.01), irrespective of age, body-mass index, dyspnea severity score, and COPD severity. Insufficient PIFRs were infrequent, but suboptimal/insufficient PIFRs were most prevalent in patients older than 75 years than in younger patients (36% vs. 56%, p = 0.036) against medium-high resistance. Regularly monitoring PIFRs against the specific resistance of the DPIs and instructing patients to employ a proper inspiration effort may help to optimize the effects of DPIs.
Collapse
|
40
|
Barnes CN, Mahler DA, Ohar JA, Lombardi DA, Crater GD. Peak Inspiratory Flows: Defining Repeatability Limits and a Predictive Equation for Different Inhalers. Chest 2020; 158:1413-1419. [PMID: 32343967 DOI: 10.1016/j.chest.2020.03.072] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2019] [Revised: 03/23/2020] [Accepted: 03/27/2020] [Indexed: 01/10/2023] Open
Abstract
BACKGROUND Peak inspiratory flow (PIF) has been proposed as a measure to assess a patient's ability to use dry powder inhalers (DPIs). However, robust quality criteria to determine a repeatability limit for measuring PIF are lacking. RESEARCH QUESTIONS What are the repeatability limits for measuring PIF? What is the relationship between PIF measured using the In-Check DIAL device at Diskus (GlaxoSmithKline; PIFD) and HandiHaler (Boehringer Ingelheim; PIFHH) resistances? STUDY DESIGN AND METHODS Data from a randomized, controlled, phase 3 trial (study 0149; see Clinical Trial Registration data) were used to define repeatability limits for PIF. In addition, a model to characterize the relationship between PIF measured with the In-Check DIAL device at PIFD and PIFHH was defined using data from two randomized, controlled, phase 3 trials (studies 0128 and 0149). RESULTS In study 0128, the mean values (SD) for PIF at zero resistance and PIFHH were 84.6 (33.4) and 57.3 (26.1) L/min, respectively. In study 0149, the mean values (SD) for PIFD and PIFHH were 42.4 (11.2) and 29.0 (8.3) L/min, respectively. At the mean level, the mean difference between measurement attempts for PIFD and PIFHH was small, < 5 and < 3 L/min, respectively. The repeatability limit was determined as 10 and 5 L/min for PIFD and PIFHH, respectively. Modeling the relationship between PIFD and PIFHH, after controlling for significant covariates, demonstrated that a PIFD value of 60 L/min was approximately equivalent to PIFHH of 40 L/min. INTERPRETATIONS This analysis demonstrated that the two highest values of PIF using the In-Check DIAL device among three inspiratory efforts, met the repeatability limit. Altogether, these data provide guidance for measuring PIF against the simulated resistance of a specific DPI in clinical practice and research studies. CLINICAL TRIAL REGISTRATION ClinicalTrials.gov; Nos.: NCT02518139 (study 0128) and NCT03095456 (study 0149); URL: www.clinicaltrials.gov.
Collapse
Affiliation(s)
| | | | - Jill A Ohar
- Wake Forest University Medical Center, Winston-Salem, NC
| | | | | |
Collapse
|
41
|
Trosini-Désert V, Lafoeste H, Regard L, Malrin R, Galarza-Jimenez MA, Amarilla CE, Delrieu J, Fôret D, Melloni B, El-Khouari F, Similowski T. A Telemedicine Intervention to Ensure the Correct Usage of Inhaler Devices. Telemed J E Health 2020; 26:1336-1344. [PMID: 32302518 DOI: 10.1089/tmj.2019.0246] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Background: Chronic obstructive pulmonary disease and asthma patients' use of inhalers is error prone. Introduction: This study evaluated telemedicine to improve the use of inhalers. Materials and Methods: Prospective, single-center pilot study in 50 patients with long-term prescription of inhaled medicine and ongoing home health care visits. In an initial telemedicine intervention, tablet devices were used by the patient to record inhaler use at home in the real-time remote presence of a physician. Errors were identified, explained to the patient, and corrected remotely. When necessary, further telemedicine interventions were scheduled at 24-48 h intervals. Follow-up interventions were performed during routine outpatient visits. Patient satisfaction was evaluated on a scale of 0 (completely unsatisfied) to 10 (completely satisfied). Results: An initial telemedicine intervention was conducted for 42 of the 50 patients included. In these patients, 96 initial inhaler medicine administration telemedicine interventions were performed, of which 94 were usable. In the initial interventions, 71 errors were identified, of which 22 (31%) were considered critical. In 81 follow-up interventions in 39 patients (median delay 256 days), 32 errors were identified (p < 0.001 vs. initial 71 errors), of which 7 were critical (p = 0.0017 vs. initial 22 errors). Discussion: This paves the way for future studies testing putative benefits of telemedicine regarding inhaled drug delivery, treatment adherence, disease control, quality of life, and health care burden and costs. Conclusions: A telemedicine intervention aimed at improving the administration of inhaled medication by adult patients at home is feasible, highly appreciated by patients, and effective at correcting medicine administration errors.
Collapse
Affiliation(s)
- Valery Trosini-Désert
- Department of Respiratory and Intensive Care Medicine, Salpêtrière Hospital, Paris, France
| | - Hélène Lafoeste
- Department of Respiratory and Intensive Care Medicine, Salpêtrière Hospital, Paris, France
| | - Lucile Regard
- Department of Respiratory and Intensive Care Medicine, Salpêtrière Hospital, Paris, France
| | - Roxane Malrin
- Department of Respiratory and Intensive Care Medicine, Salpêtrière Hospital, Paris, France
| | | | | | | | - Didier Fôret
- ANTADIR Federation, Maison du Poumon, Paris, France
| | | | | | - Thomas Similowski
- Department of Respiratory and Intensive Care Medicine, Salpêtrière Hospital, Paris, France.,Clinical and Experimental Respiratory Neurophysiology, Sorbonne University, Paris, France
| |
Collapse
|
42
|
Clark AR, Weers JG, Dhand R. The Confusing World of Dry Powder Inhalers: It Is All About Inspiratory Pressures, Not Inspiratory Flow Rates. J Aerosol Med Pulm Drug Deliv 2020; 33:1-11. [PMID: 31613682 PMCID: PMC7041319 DOI: 10.1089/jamp.2019.1556] [Citation(s) in RCA: 63] [Impact Index Per Article: 15.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2019] [Accepted: 09/11/2019] [Indexed: 11/12/2022] Open
Abstract
Dry powder inhalers (DPIs) all have the ability to aerosolize dry powders, but they each offer different operating mechanisms and resistances to inhaled airflow. This variety has resulted in both clinician and patient confusion concerning DPI performance, use, and effectiveness. Particularly, there is a growing misconception that a single peak inspiratory flow rate (PIFR) can determine a patient's ability to use a DPI effectively, regardless of its design or airflow resistance. For this review article, we have sifted through the relevant literature concerning DPIs, inspiratory pressures, and inspiratory flow rates to provide a comprehensive and concise discussion and recommendations for DPI use. We ultimately clarify that the controlling parameter for DPI performance is not the PIFR but the negative pressure generated by the patient's inspiratory effort. A pressure drop ∼≥1 kPa (∼10 cm H2O) with any DPI is a reasonable threshold above which a patient should receive an adequate lung dose. Overall, we explore the underlying factors controlling inspiratory pressures, flow rates and dispensing, and dispersion characteristics of the various DPIs to clarify that inspiratory pressures, not flow rates, limit and control a patient's ability to generate sufficient flow for effective DPI use.
Collapse
Affiliation(s)
| | | | - Rajiv Dhand
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, University of Tennessee Graduate School of Medicine, Knoxville, Tennessee
| |
Collapse
|
43
|
Samarghandi A, Ioachimescu OC, Qayyum R. Association between peak inspiratory flow rate and hand grip muscle strength in hospitalized patients with acute exacerbation of chronic obstructive pulmonary disease. PLoS One 2020; 15:e0227737. [PMID: 32004333 PMCID: PMC6994102 DOI: 10.1371/journal.pone.0227737] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2019] [Accepted: 12/27/2019] [Indexed: 02/07/2023] Open
Abstract
RATIONALE Ineffective peak inspiratory flow rate (PIFR) generation in patients using inhalers results in insufficient drug delivery to the lungs and poor clinical outcomes. Low inspiratory muscle strength is associated with suboptimal PIFR. OBJECTIVE To examine in a prospective study the relationship between PIFR and skeletal muscle strength using hand grip strength (HGS) as a surrogate. METHODS Adult patients admitted with acute exacerbation of chronic obstructive pulmonary disease (COPD) were enrolled. PIFR was measured within 48 hours before discharge. PIFR below 60L/min was considered suboptimal. HGS was measured using a handheld dynamometer. Any readmissions and emergency department visit data were collected. The associations between PIFR, HGS, 30 and 90-day COPD and all-cause readmissions were examined, without and with adjustment for age, race and gender. RESULTS Of the 75 enrolled patients, 56% had suboptimal PIFR; they were older (63.9±9.7 vs. 58.2±7.7 years) and had significantly lower HGS (24.2±11.1 vs. 30.9±10.9 Kg) compared to those with optimal PIFR. There were no significant differences between the two PIFR groups by gender, race, history of coronary artery disease, congestive heart failure, hypertension or functional scores. Each kilogram increase in HGS was associated with 0.50 (95%CI 0.18-0.89, p = 0.003) L/min increase in PIFR. We did not observe an association between PIFR and 30 or 90-day readmission rates. CONCLUSION We found a significant association between HGS and PIFR in hospitalized patients with acute exacerbations of COPD. Whether interventions aimed at increasing skeletal muscle strength also result in improvement in PIFR remains unclear and need further study.
Collapse
Affiliation(s)
- Arash Samarghandi
- Division of Pulmonary, Allergy, Emory University School of Medicine, Critical Care and Sleep Medicine, Atlanta, Georgia
| | - Octavian C. Ioachimescu
- Division of Pulmonary, Allergy, Emory University School of Medicine, Critical Care and Sleep Medicine, Atlanta, Georgia
| | - Rehan Qayyum
- Division of Hospital Medicine, Virginia Commonwealth University School of Medicine, Richmond, Virginia, United States of America
| |
Collapse
|
44
|
Mahler DA. The role of inspiratory flow in selection and use of inhaled therapy for patients with chronic obstructive pulmonary disease. Respir Med 2019; 161:105857. [PMID: 32056720 DOI: 10.1016/j.rmed.2019.105857] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/09/2019] [Revised: 12/11/2019] [Accepted: 12/27/2019] [Indexed: 11/26/2022]
Abstract
Inhalation therapy is the mainstay of chronic obstructive pulmonary disease management, and inhaler selection can have a profound impact on drug delivery and medication adherence, as well as on treatment outcomes. Although multiple delivery systems, such as pressurized metered-dose inhalers, dry powder inhalers, slow-mist inhalers, and nebulizers, are available, clinical benefits achieved by patients rely on effective delivery of the inhaled medication to the airways. Among several factors influencing drug deposition, inspiratory flow is one of the most important. Inspiratory flow impacts drug delivery and subsequent clinical efficacy, making it necessary to adequately train patients to ensure correct inhaler use. Peak inspiratory flow is the maximal airflow generated during a forced inspiratory maneuver. Health care professionals need to select the appropriate delivery system after carefully considering patient characteristics, including lung function, optimal inspiratory flow, manual dexterity, and cognitive function. Herein, the role of inspiratory flow in the selection and use of inhaled therapy in patients with COPD is reviewed.
Collapse
Affiliation(s)
- Donald A Mahler
- Emeritus Professor of Medicine, Geisel School of Medicine at Dartmouth, One Rope Ferry Road, Hanover, NH, 03755, USA; Valley Regional Hospital, Kane Center, 243 Elm Street, Claremont, NH, 03743, USA.
| |
Collapse
|
45
|
Clark CM, Jacobs DM, Sethi S. Revefenacin for the treatment of chronic obstructive pulmonary disease. Expert Rev Respir Med 2019; 14:239-247. [PMID: 31847629 DOI: 10.1080/17476348.2020.1703676] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
Introduction: Chronic obstructive pulmonary disease (COPD) is a progressive condition characterized by irreversible or incompletely reversible airflow limitation. Long-acting bronchodilators, including β2 agonists (LABA) and muscarinic antagonists (LAMA), serve as the standard of care for maintenance therapy in COPD. Individualizing therapy to optimize selection of delivery device has the potential to improve medication adherence and clinical outcomes among COPD patients.Areas covered: Revefenacin (Yupelri) is the only LAMA approved for once-daily administration via standard jet nebulizer for the maintenance therapy in patients with COPD. Revefenacin has a unique biphenyl carbamate tertiary amine structure, differing from the quaternary amine structure of previously approved LAMAs. Here we summarize the available clinical data for this new agent and discuss its potential place in the treatment of COPD.Expert opinion: Based on available clinical trial data, revefenacin appears to be an effective and safe option for long-term maintenance therapy of COPD. Revefenacin offers a once-daily option for LAMA therapy for patients who prefer or require nebulized drug delivery. The availability of this agent can allow patients to combine nebulized therapies that could improve clinical outcomes in appropriately selected patients with COPD.
Collapse
Affiliation(s)
- Collin M Clark
- Department of Pharmacy Practice, School of Pharmacy and Pharmaceutical Sciences, University at Buffalo, Buffalo, NY, USA.,Department of Family Medicine, Primary Care Research Institute, Jacobs School of Medicine and Biomedical Sciences, University at Buffalo, Buffalo, NY, USA
| | - David M Jacobs
- Department of Pharmacy Practice, School of Pharmacy and Pharmaceutical Sciences, University at Buffalo, Buffalo, NY, USA
| | - Sanjay Sethi
- Department of Medicine, Clinical and Translational Research Center, Jacobs School of Medicine and Biomedical Sciences, University at Buffalo, Buffalo, NY, USA
| |
Collapse
|
46
|
Ahn JH, Chung JH, Shin KC, Choi EY, Jin HJ, Lee MS, Nam MJ, Lee KH. Critical Inhaler Handling Error Is an Independent Risk Factor for Frequent Exacerbations of Chronic Obstructive Pulmonary Disease: Interim Results of a Single Center Prospective Study. Int J Chron Obstruct Pulmon Dis 2019; 14:2767-2775. [PMID: 31819409 PMCID: PMC6896926 DOI: 10.2147/copd.s234774] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2019] [Accepted: 11/21/2019] [Indexed: 12/02/2022] Open
Abstract
Objective Chronic obstructive pulmonary disease (COPD) acute exacerbations are significant causes of morbidity and mortality. “Frequent exacerbator” phenotypes are considered a distinct subgroup and this phenotype has a negative effect on lung function, quality of life, activity, hospital admission, and mortality. We assess inhaler handling technique and adherence, and evaluate risk factors associated with frequent exacerbations in COPD patients. Methods This study was a cross-sectional, case-control study. We prospectively enrolled 189 COPD patients from Yeungnam University Hospital from January 2018 to November 2018. Subjects were tested regarding their inhaler technique in face-to-face interviews with an advanced practice nurse of inhaler upon study entry. Frequency of moderate to severe COPD exacerbations were reviewed via electronic medical records during 12 months prior to study entry. Frequent exacerbations were defined as ≥2 moderate to severe exacerbations in the prior 12 months. Multivariate logistic regression was performed to identify risk factors for frequent exacerbations. Results Among 189 COPD patients, 50 (26.5%) were frequent exacerbators. Based on univariate analyses, body mass index (BMI) < 25 kg/m2, lower forced expiratory volume in 1 s (FEV1), higher mMRC, lower feeling of satisfaction with the inhaler, and any critical errors were potential risk factors for frequent exacerbations. Multivariate logistic regression analyses revealed that BMI < 25 kg/m2 (OR, 2.855, 95% CI, 1.247–6.534; p=0.013), higher mMRC (OR, 1.625, 95% CI, 1.072–2.463; p=0.022), and any critical error (OR, 2.020, 95% CI, 1.021–3.999; p=0.044) were risk factors. Conclusion Any critical error, BMI < 25 kg/m2 and high mMRC are independent risk factors for frequent exacerbations in COPD patients. Careful monitoring and education around inhaler devices, particularly in frequent exacerbators, are important components of COPD treatment.
Collapse
Affiliation(s)
- June Hong Ahn
- Division of Pulmonology and Allergy, Department of Internal Medicine, Yeungnam University Medical Center, College of Medicine, Yeungnam University, Daegu, South Korea
| | - Jin Hong Chung
- Division of Pulmonology and Allergy, Department of Internal Medicine, Yeungnam University Medical Center, College of Medicine, Yeungnam University, Daegu, South Korea
| | - Kyeong-Cheol Shin
- Division of Pulmonology and Allergy, Department of Internal Medicine, Yeungnam University Medical Center, College of Medicine, Yeungnam University, Daegu, South Korea
| | - Eun Young Choi
- Division of Pulmonology and Allergy, Department of Internal Medicine, Yeungnam University Medical Center, College of Medicine, Yeungnam University, Daegu, South Korea
| | - Hyun Jung Jin
- Division of Pulmonology and Allergy, Department of Internal Medicine, Yeungnam University Medical Center, College of Medicine, Yeungnam University, Daegu, South Korea
| | - Mi Suk Lee
- Division of Pulmonology and Allergy, Department of Internal Medicine, Yeungnam University Medical Center, College of Medicine, Yeungnam University, Daegu, South Korea
| | - Mi Jeong Nam
- Division of Pulmonology and Allergy, Department of Internal Medicine, Yeungnam University Medical Center, College of Medicine, Yeungnam University, Daegu, South Korea
| | - Kwan Ho Lee
- Division of Pulmonology and Allergy, Department of Internal Medicine, Yeungnam University Medical Center, College of Medicine, Yeungnam University, Daegu, South Korea
| |
Collapse
|
47
|
Abadelah M, Al-Assadi J, Rooney J, Larhrib H. The effect of inspiratory parameters after two separate inhalations on the dose emission of theophylline from low and high resistance dry powder inhalers. Saudi Pharm J 2019; 28:74-86. [PMID: 31920434 PMCID: PMC6950967 DOI: 10.1016/j.jsps.2019.11.007] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2019] [Accepted: 11/02/2019] [Indexed: 11/14/2022] Open
Abstract
The dose emission from DPIs can be affected by the inspiratory parameters achieved by the patient as well as the device in-use. Conventional in-vitro dose emission methodology was used, but instead of using inhalation volume (Vin) of 2 or 4 L and peak inhalation flow (PIF) corresponding to 4 kPa, a range of PIFs (28.3, 60, 90 and 120 L min−1) and Vins (0.5, 0.75, 1, 1.5, 2, and 4 L) were used. The formulation was composed of spray dried Theophylline as a model drug with Lactohale® α lactose monohydrate carrier. The formulation was aerosolised using two DPIs; a low resistance Breezhaler® and high resistance Handihaler®. The formulation showed a consistent dose content uniformity with a Coefficient of Variation (CV) of 1.70%. The drug distribution on the surface of the carrier was obvious from the SE micrographs with some drug particles lodged into lactose crevices. The dose emission after the first inhalation (ED1) and total emitted dose (TED) of theophylline increased with PIF and Vin, irrespective of the inhaler device. However, the dose delivered was superior for the Handihaler® compared to Breezhaler®. Drug retention in the capsule and device was high at low PIFs and Vins and reduced after the second inhalation. Therefore, our study supports the recommendations for patients who cannot achieve sufficient PIF and Vin to inhale twice for each dose to ensure the better clinical outcome.
Collapse
Key Words
- API, Active pharmaceutical ingredient
- DPIs, Dry powder inhalers
- DUSA, Dose unit sampling apparatus
- ED, Emitted dose
- ED1, Dose emitted after first inhalation
- ED2, Dose emitted after second inhalation
- Handihaler®
- Inhalation volume
- Onbrez Breezhaler®
- PIF, Peak inhalation flow
- PIL, Patient information leaflets
- Peak inhalation flow
- SEM, Scanning electron microscope
- TED, Total Emitted Dose
- TRA, Total Residual amount
- TRA, Total residual amount
- TRD, Total recovered dose
- Theophylline
- Vin, inhalation volume
Collapse
Affiliation(s)
- Mohamad Abadelah
- Department of Pharmacy and Pharmaceutical Sciences, University of Huddersfield, Huddersfield HD1 3DH, United Kingdom.,Department of Pharmacy and Pharmaceutical Sciences, University of Tobruk, Libya
| | - Jumannah Al-Assadi
- Department of Pharmacy and Pharmaceutical Sciences, University of Huddersfield, Huddersfield HD1 3DH, United Kingdom
| | - James Rooney
- Department of Pharmacy and Pharmaceutical Sciences, University of Huddersfield, Huddersfield HD1 3DH, United Kingdom
| | - Hassane Larhrib
- Department of Pharmacy and Pharmaceutical Sciences, University of Huddersfield, Huddersfield HD1 3DH, United Kingdom
| |
Collapse
|
48
|
Wilkinson AJK, Braggins R, Steinbach I, Smith J. Costs of switching to low global warming potential inhalers. An economic and carbon footprint analysis of NHS prescription data in England. BMJ Open 2019; 9:e028763. [PMID: 31662306 PMCID: PMC6830591 DOI: 10.1136/bmjopen-2018-028763] [Citation(s) in RCA: 69] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/30/2019] [Revised: 09/17/2019] [Accepted: 09/18/2019] [Indexed: 11/25/2022] Open
Abstract
OBJECTIVES Metered-dose inhalers (MDIs) contain propellants which are potent greenhouse gases. Many agencies propose a switch to alternative, low global warming potential (GWP) inhalers, such as dry powder inhalers (DPIs). We aimed to analyse the impact on greenhouse gas emissions and drug costs of making this switch. SETTING We studied National Health Service prescription data from England in 2017 and collated carbon footprint data on inhalers commonly used in England. DESIGN Inhalers were separated into different categories according to their mechanisms of action (eg, short-acting beta-agonist). Within each category we identified low and high GWP inhalers and calculated the cost and carbon impact of changing to low GWP inhalers. We modelled scenarios for swapping proportionally according to the current market share of each equivalent DPI (model 1) and switching to the lowest cost pharmaceutically equivalent DPI (model 2). We also reviewed available data on the carbon footprint of inhalers from scientific publications, independently certified reports and patents to provide more accurate carbon footprint information on different types of inhalers. RESULTS If MDIs using HFA propellant are replaced with the cheapest equivalent DPI, then for every 10% of MDIs changed to DPIs, drug costs decrease by £8.2M annually. However if the brands of DPIs stay the same as 2017 prescribing patterns, for every 10% of MDIs changed to DPIs, drug costs increase by £12.7M annually. Most potential savings are due to less expensive long-acting beta-agonist (LABA)/inhaled corticosteroids (ICS) inhalers. Some reliever inhalers (eg, Ventolin) have a carbon footprint over 25 kg CO2e per inhaler, while others use far less 1,1,1,2-tetrafluoroethane (HFA134a) (eg, Salamol) with a carbon footprint of <10 kg CO2e per inhaler. 1,1,1,2,3,3,3-Heptafluoropropane (HFA227ea) LABA/ICS inhalers (eg, Flutiform) have a carbon footprint over 36 kg CO2e, compared with an equivalent HFA134a combination inhaler (eg, Fostair) at <20 kg CO2e. For every 10% of MDIs changed to DPIs, 58 kt CO2e could be saved annually in England. CONCLUSIONS Switching to DPIs would result in large carbon savings and can be achieved alongside reduced drug costs by using less expensive brands. Substantial carbon savings can be made by using small volume HFA134a MDIs, in preference to large volume HFA134a MDIs, or those containing HFA227ea as a propellant.
Collapse
Affiliation(s)
| | - Rory Braggins
- Department of Public Health and Primary Care, School of Clinical Medicine, University of Cambridge, Cambridge, UK
| | | | - James Smith
- Department of Public Health and Primary Care, School of Clinical Medicine, University of Cambridge, Cambridge, UK
| |
Collapse
|
49
|
Tran DT, Akpinar I, Mayers I, Makhinova T, Jacobs P. Temporal Trends Of Pharmacologic Therapies For Patients With Chronic Obstructive Pulmonary Disease In Alberta, Canada. Int J Chron Obstruct Pulmon Dis 2019; 14:2245-2256. [PMID: 31576120 PMCID: PMC6769052 DOI: 10.2147/copd.s214191] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2019] [Accepted: 08/15/2019] [Indexed: 11/23/2022] Open
Abstract
Objectives To describe the trends in pharmacologic treatment for patients newly diagnosed with chronic obstructive pulmonary disease (COPD) in Alberta, Canada. Methods We linked Alberta health databases to identify patients aged ≥35 years with incident COPD between April 2010 and March 2017. Incident cases were defined as those who did not have a hospitalization or outpatient visit with COPD in the previous 2 years. Patients were categorized into two groups: 1) incident cases at a hospital and 2) incident cases at an outpatient clinic, and both were followed until death or being censored by 31 March 2018. Utilization of COPD medication for 30 days following incident event and adherence in maintenance therapy over time were reported. Results The study included 33,169 patients with incident COPD (hospital: 9,089; outpatient: 24,080). In 18,666 (56.3%) patients starting medication within 30 days of the incident event (2010: 52.7%; 2016: 56.6%; p=0.002), SABA (60.5%) and LABA/ICS (41.6%) were most commonly used. ICS (without LABA) was used in 14.2% and was used as monotherapy in 4.5% of patients. The proportion of patients who initiated any ICS was similar (hospital: 56.7%; outpatient: 55.7%; p=0.194) and decreased in both settings over time (p<0.001). Drug adherence during the first year after the incident event was 54.3%, higher among hospital patients (66.5% vs 48.9%; p<0.001), and improved over time (2010: 53.4%; 2016: 57.4%; p<0.001). Conclusion The initiation of and adherence to pharmacologic therapy for patients with COPD is low but improves over time. While SABA and LABA/ICS are most commonly used, ICS utilization decreases over time.
Collapse
Affiliation(s)
- Dat T Tran
- Institute of Health Economics, Edmonton, Alberta, Canada
- Faculty of Pharmacy and Pharmaceutical Sciences, University of Alberta, Edmonton, Alberta, Canada
| | - Ilke Akpinar
- Institute of Health Economics, Edmonton, Alberta, Canada
| | - Irvin Mayers
- Faculty of Medicine, University of Alberta, Edmonton, Alberta, Canada
| | - Tatiana Makhinova
- Faculty of Pharmacy and Pharmaceutical Sciences, University of Alberta, Edmonton, Alberta, Canada
| | - Philip Jacobs
- Faculty of Medicine, University of Alberta, Edmonton, Alberta, Canada
| |
Collapse
|
50
|
Abadelah M, Chrystyn H, Larhrib H. Use of inspiratory profiles from patients with chronic obstructive pulmonary disease (COPD) to investigate drug delivery uniformity and aerodynamic dose emission of indacaterol from a capsule based dry powder inhaler. Eur J Pharm Sci 2019; 134:138-144. [PMID: 31005623 DOI: 10.1016/j.ejps.2019.04.018] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2018] [Revised: 04/16/2019] [Accepted: 04/17/2019] [Indexed: 11/25/2022]
Abstract
Most patients using dry powder inhalers (DPIs) are unable to achieve the inhalation parameters recommended for pharmacopoeial in-vitro dose emission testing. The dose emission characteristics of indacaterol Breezhaler (IB) have been measured using COPD patients' inhalation profiles (IPs) when using IB and replayed in-vitro using a breath simulator attached to an Andersen Cascade Impactor. The peak inhalation flow (PIF) of the profiles ranged from 28.3 to 87.8 L/min and inhaled volumes (Vin) from 0.7 to 3 L. The indacaterol total emitted doses (TED), fine particle dose (FPD) and mass median aerodynamic diameter (MMAD) were measured. TED varied between 61% to 83% of the 150 μg nominal dose, the FPD was found to vary between 19% and 30% and the MMAD from 3.7 μm to 2.3 μm with the increase of the profiles' PIF and Vin. The mean (SD) values were 113.4(8.9) μg, 39.7(5.0) μg and 2.7(0.5) μm, respectively. The quantity and the quality of the emitted dose from the indacaterol Breezhaler® are dependent on the capability of a patient generating an optimal inhalation profile. Therefore, when using the IB patients should be encouraged to inhale as fast as they can from the start of their inhalation and for as long as possible.
Collapse
Affiliation(s)
- Mohamad Abadelah
- Department of Pharmacy and Pharmaceutical Sciences, University of Huddersfield, Huddersfield HD1 3DH, United Kingdom.
| | - Henry Chrystyn
- Inhalation Consultancy Ltd, Yeadon, Leeds LS19 7SP, United Kingdom.
| | - Hassan Larhrib
- Department of Pharmacy and Pharmaceutical Sciences, University of Huddersfield, Huddersfield HD1 3DH, United Kingdom.
| |
Collapse
|