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Kim SH, Moon JY, Min KH, Lee H. Proposed Etiotypes for Chronic Obstructive Pulmonary Disease: Controversial Issues. Tuberc Respir Dis (Seoul) 2024; 87:221-233. [PMID: 38317417 PMCID: PMC11222089 DOI: 10.4046/trd.2023.0194] [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: 12/15/2023] [Revised: 01/19/2024] [Accepted: 02/02/2024] [Indexed: 02/07/2024] Open
Abstract
The 2023 Global Initiative for Chronic Obstructive Lung Disease (GOLD) revised the definition of chronic obstructive pulmonary disease (COPD) to broadly include a variety of etiologies. A new taxonomy, composed of etiotypes, aims to highlight the heterogeneity in causes and pathogenesis of COPD, allowing more personalized management strategies and emphasizing the need for targeted research to understand and manage COPD better. However, controversy arises with including some diseases under the umbrella term of COPD, as their clinical presentations and treatments differ from classical COPD, which is smoking-related. COPD due to infection (COPD-I) and COPD due to environmental exposure (COPD-P) are classifications within the new taxonomy. Some disease entities in these categories show distinct clinical features and may not benefit from conventional COPD treatments, raising questions about their classification as COPD subtypes. There is also controversy regarding whether bronchiectasis with airflow limitations should be classified as an etiotype of COPD. This article discusses controversial issues associated with the proposed etiotypes for COPD in terms of COPD-I, COPD-P, and bronchiectasis. While the updated COPD definition by GOLD 2023 is a major step towards recognizing the disease's complexity, it also raises questions about the classification of related respiratory conditions. This highlights the need for further research to improve our understanding and approach to COPD management.
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Affiliation(s)
- 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, Republic of Korea
| | - Ji-Yong Moon
- Division of Pulmonary Medicine and Allergy, Department of Internal Medicine, Hanyang University College of Medicine, Seoul, Republic of Korea
| | - Kyung Hoon Min
- Division of Pulmonary, Allergy, and Critical Care Medicine, Department of Internal Medicine, Korea University Guro Hospital, Korea University College of Medicine, Seoul, Republic of Korea
| | - Hyun Lee
- Division of Pulmonary Medicine and Allergy, Department of Internal Medicine, Hanyang University College of Medicine, Seoul, Republic of Korea
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Alqarni AA, Badr OI, Aldhahir AM, Alqahtani JS, Siraj RA, Naser AY, Alghamdi AS, Majrshi M, Alghamdi SM, Alyami MM, Alghamdi SA, Alwafi H. Obesity Prevalence and Association with Spirometry Profiles, ICU Admission, and Comorbidities Among Patients with COPD: Retrospective Study in Two Tertiary Centres in Saudi Arabia. Int J Chron Obstruct Pulmon Dis 2024; 19:111-120. [PMID: 38249824 PMCID: PMC10799648 DOI: 10.2147/copd.s442851] [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: 10/26/2023] [Accepted: 01/04/2024] [Indexed: 01/23/2024] Open
Abstract
Background Obesity is common among chronic obstructive pulmonary disease (COPD) patients and is associated with an increase in acute exacerbation episodes. However, data on obesity's impact on and association with clinical outcomes among patients with COPD are limited. This study aimed to determine overweight and obesity prevalence and associations with spirometry profiles, intensive care unit (ICU) admission, and comorbidities in patients with COPD. Methods In this retrospective cohort study, we reviewed the electronic health records of adult individuals diagnosed with COPD who visited the studied pulmonary clinics between 1 January 2018 and 31 December 2022 and then collected key demographic variables and relevant clinical outcomes and comorbidities. Results A total of 474 patients with COPD were included in the final analysis, of whom 60% were male. The occurrences of overweight and obesity were 32.7% and 38.2%, respectively. The presence of comorbidities was high in obese patients (78.4%), followed by overweight patients (63.8%) with COPD. Obese and overweight patients had the highest ward admission rates (38.3% and 34.2%, respectively). ICU admissions were higher in obese and overweight patients (16% and 12%, respectively) compared with normal-weight patients (9%). Although no significant correlation was found between body mass index and spirometry parameters, comorbidities and ICU admission were linked to overweight and obesity in COPD patients (AOR: 1.82 95% CI: 1.15 to 2.86 and AOR: 3.34 95% CI 1.35 to 8.22, respectively). Conclusion Our findings imply that obesity in COPD is prevalent and is associated with adverse clinical outcomes including a greater number of comorbidities and higher rates of hospitalization and admission to ICUs although no associations were found between body weight and spirometry parameters. Further studies are needed to assess whether implementing and optimising obesity screening and management at an early stage in COPD can prevent further deterioration.
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Affiliation(s)
- Abdullah A Alqarni
- Department of Respiratory Therapy, Faculty of Medical Rehabilitation Sciences, King Abdulaziz University, Jeddah, Saudi Arabia
- Respiratory Therapy Unit, King Abdulaziz University Hospital, Jeddah, Saudi Arabia
| | - Omaima I Badr
- Department of Chest Medicine, Faculty of Medicine, Mansoura University, Mansoura, Egypt
- Department of Pulmonary Medicine, Al Noor Specialist Hospital, Mecca, Saudi Arabia
| | - Abdulelah M Aldhahir
- Respiratory Therapy Department, Faculty of Applied Medical Sciences, Jazan University, Jazan, Saudi Arabia
| | - Jaber S Alqahtani
- Department of Respiratory Care, Prince Sultan Military College of Health Sciences, Dammam, Saudi Arabia
| | - Rayan A Siraj
- Department of Respiratory Care, College of Applied Medical Sciences, King Faisal University, Al Ahsa, Saudi Arabia
| | - Abdallah Y Naser
- Department of Applied Pharmaceutical Sciences and Clinical Pharmacy, Faculty of Pharmacy, Isra University, Amman, Jordan
| | - Abdulrhman S Alghamdi
- Department of Rehabilitation Science, College of Applied Medical Sciences, King Saud University, Riyadh, Saudi Arabia
| | - Mansour Majrshi
- National Heart and Lung Institute, Imperial College London, London, UK
- Respiratory Medicine, Royal Brompton Hospital, London, UK
| | - Saeed M Alghamdi
- Clinical Technology Department, Respiratory Care Program, Faculty of Applied Medical Sciences, Umm Al-Qura University, Makkah, Saudi Arabia
| | - Mohammed M Alyami
- Respiratory Therapy Department, Batterjee Medical College, Khamis Mushait, Saudi Arabia
| | - Sara A Alghamdi
- Respiratory Care Department, AlSalama Hospital, Jeddah, Saudi Arabia
| | - Hassan Alwafi
- Department of Clinical Pharmacology and Toxicology, Faculty of Medicine, Umm Al-Qura University, Makkah, Saudi Arabia
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Caglar Tosun BN, Zeren M, Barlik M, Demir E, Gulen F. Investigation of dynamic hyperinflation and its relationship with exercise capacity in children with bronchiectasis. Pediatr Pulmonol 2022; 57:2218-2226. [PMID: 35666051 DOI: 10.1002/ppul.26028] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/09/2022] [Revised: 05/07/2022] [Accepted: 05/31/2022] [Indexed: 11/07/2022]
Abstract
BACKGROUND AND AIM Dynamic hyperinflation (DH) is a major contributor to exercise intolerance in patients with obstructive lung diseases. However, it has not been investigated in children with bronchiectasis (BE). We aimed to investigate dynamic ventilatory responses and their influence on functional exercise capacity in children with BE. METHODS Forty children with BE (mean forced expiratory volume in 1 s [FEV1 ] = 78 ± 19%pred) were included. Six-minute walk test (6MWT) was conducted using Spiropalm 6MWT® for evaluating dynamic ventilatory responses including inspiratory capacity (IC), minute ventilation (VE), breathing reserve (BR) and respiratory rate (RR). A decrease of ≥100 ml in IC during exertion was defined as DH. Also, spirometry was performed, and peripheral muscle strength were measured. RESULTS Twenty patients (50%) developed DH, and four patients (10%) were ventilatory limited (BR < %30) during 6MWT. There was a 176 [100-590] ml decrease in IC after exertion in patients with DH. DH did not correlate to clinical or functional indicators of the disease, except for an increase in RR (∆RR) during exertion. High ∆RR was associated with presence of DH (rpb = 0.390; p < 0.05). Clinical features, peripheral muscle strength, and Spiropalm 6MWT metrics including 6MWT distance did not differ between patients with and without DH. Univariate analysis revealed FVC% (R = 0.340), VEpeak (R = 0.565), quadriceps strength (R = 0.698) and handgrip strength (R = 0.711) were the only predictors of 6MWT distance (p < 0.05). CONCLUSION Although DH is common in children with BE, the severity of DH is rather low and may not seem to affect functional exercise capacity. However, peripheral muscle strength was a major contributor to functional exercise capacity.
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Affiliation(s)
- Beyza Nur Caglar Tosun
- Department of Physiotherapy and Rehabilitation, Graduate Education Institute, Izmir Bakircay University, Izmir, Turkey
| | - Melih Zeren
- Department of Physiotherapy and Rehabilitation, Faculty of Health Sciences, Izmir Bakircay University, Izmir, Turkey
| | - Meral Barlik
- Department of Pediatrics, Division of Pediatric Pulmonology, Faculty of Medicine, Ege University, Izmir, Turkey
| | - Esen Demir
- Department of Pediatrics, Division of Pediatric Pulmonology, Faculty of Medicine, Ege University, Izmir, Turkey
| | - Figen Gulen
- Department of Pediatrics, Division of Pediatric Pulmonology, Faculty of Medicine, Ege University, Izmir, Turkey
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