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Significant predictors of medically diagnosed chronic obstructive pulmonary disease in patients with preserved ratio impaired spirometry: a 3-year cohort study.

Authors
 Hye Jung Park  ;  Min Kwang Byun  ;  Chin Kook Rhee  ;  Kyungjoo Kim  ;  Hyung Jung Kim  ;  Kwang-Ha Yoo 
Citation
 Respiratory Research, Vol.19(1) : 185, 2018 
Journal Title
 Respiratory Research 
ISSN
 1465-9921 
Issue Date
2018
Keywords
Chronic obstructive pulmonary disorder ; Prognosis ; Spirometry
Abstract
BACKGROUND: Preserved ratio impaired spirometry (PRISm) is an incompletely understood respiratory condition. We investigated the incidence and significant predictive factors of chronic obstructive pulmonary disease (COPD) in PRISm patients. METHODS: From 11,922 subjects registered in the Korea National Health and Nutrition Examination Survey, never or light smokers, young subjects, and those already medically diagnosed with COPD (defined by ICD-10 code and prescribed medication) were excluded. The 2666 remaining subjects were categorized into PRISm (normal forced expiratory volume in the first second [FEV1]/force vital capacity [FVC] [≥ 0.7] and low FEV1 (< 80%); n = 313); normal (n = 1666); and unrevealed COPD groups (FEV1/FVC ratio <  0.7; n = 687). These groups were compared using matched Health Insurance Review and Assessment Service data over a 3-year follow-up. RESULTS: COPD incidence in PRISm patients (17/1000 person-year [PY]) was higher than that in normal subjects (4.3/1000 PY; P <  0.001), but lower than that in unrevealed COPD patients (45/1000 PY; P < 0.001). PRISm patients visited hospitals, took COPD medication, and incurred hospitalization costs more frequently than normal subjects, but less frequently than unrevealed COPD patients. In the overall sample, age, FVC, FEV1, dyspnea, and wheezing were significant predictors of COPD, but in PRISm patients, only age (OR, 1.14; P = 0.002) and wheezing (OR, 4.56; P = 0.04) were significant predictors. CONCLUSION: PRISm patients are likely to develop COPD, and should be monitored carefully, especially older patients and those with wheezing, regardless of lung function.
URI
https://ir.ymlib.yonsei.ac.kr/handle/22282913/163549
Files in This Item:
T201803149.pdf Download
DOI
10.1186/s12931-018-0896-7
Appears in Collections:
1. Journal Papers (연구논문) > 1. College of Medicine (의과대학) > Dept. of Internal Medicine (내과학교실)
Yonsei Authors
김형중(Kim, Hyung Jung)
박혜정(Park, Hye Jung) ORCID logo https://orcid.org/0000-0002-1862-1003
변민광(Byun, Min Kwang) ORCID logo https://orcid.org/0000-0003-1525-1745
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