| Title |
Accuracy of forced oscillation technique to assess lung function in geriatric COPD population
|
|---|---|
| Published in |
International Journal of Chronic Obstructive Pulmonary Disease, May 2016
|
| DOI | 10.2147/copd.s102222 |
| Pubmed ID | |
| Authors |
Hoi Nam Tse, Cee Zhung Steven Tseng, Ying Wong, Kwok Sang Yee, Lai Yun Ng |
| Abstract |
Performing lung function test in geriatric patients has never been an easy task. With well-established evidence indicating impaired small airway function and air trapping in patients with geriatric COPD, utilizing forced oscillation technique (FOT) as a supplementary tool may aid in the assessment of lung function in this population. To study the use of FOT in the assessment of airflow limitation and air trapping in geriatric COPD patients. A cross-sectional study in a public hospital in Hong Kong. ClinicalTrials.gov ID: NCT01553812. Geriatric patients who had spirometry-diagnosed COPD were recruited, with both FOT and plethysmography performed. "Resistance" and "reactance" FOT parameters were compared to plethysmography for the assessment of air trapping and airflow limitation. In total, 158 COPD subjects with a mean age of 71.9±0.7 years and percentage of forced expiratory volume in 1 second of 53.4±1.7 L were recruited. FOT values had a good correlation (r=0.4-0.7) to spirometric data. In general, X values (reactance) were better than R values (resistance), showing a higher correlation with spirometric data in airflow limitation (r=0.07-0.49 vs 0.61-0.67), small airway (r=0.05-0.48 vs 0.56-0.65), and lung volume (r=0.12-0.29 vs 0.43-0.49). In addition, resonance frequency (Fres) and frequency dependence (FDep) could well identify the severe type (percentage of forced expiratory volume in 1 second <50%) of COPD with high sensitivity (0.76, 0.71) and specificity (0.72, 0.64) (area under the curve: 0.8 and 0.77, respectively). Moreover, X values could stratify different severities of air trapping, while R values could not. FOT may act as a simple and accurate tool in the assessment of severity of airflow limitation, small and central airway function, and air trapping in patients with geriatric COPD who have difficulties performing conventional lung function test. Moreover, reactance parameters were better than resistance parameters in correlation with air trapping. |
X Demographics
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Geographical breakdown
| Country | Count | As % |
|---|---|---|
| United States | 1 | 50% |
| Unknown | 1 | 50% |
Demographic breakdown
| Type | Count | As % |
|---|---|---|
| Members of the public | 1 | 50% |
| Practitioners (doctors, other healthcare professionals) | 1 | 50% |
Mendeley readers
The data shown below were compiled from readership statistics for 40 Mendeley readers of this research output. Click here to see the associated Mendeley record.
Geographical breakdown
| Country | Count | As % |
|---|---|---|
| Unknown | 40 | 100% |
Demographic breakdown
| Readers by professional status | Count | As % |
|---|---|---|
| Researcher | 7 | 18% |
| Student > Master | 5 | 13% |
| Student > Doctoral Student | 4 | 10% |
| Student > Postgraduate | 4 | 10% |
| Student > Bachelor | 3 | 8% |
| Other | 8 | 20% |
| Unknown | 9 | 23% |
| Readers by discipline | Count | As % |
|---|---|---|
| Medicine and Dentistry | 17 | 43% |
| Nursing and Health Professions | 5 | 13% |
| Engineering | 3 | 8% |
| Economics, Econometrics and Finance | 1 | 3% |
| Linguistics | 1 | 3% |
| Other | 2 | 5% |
| Unknown | 11 | 28% |
Attention Score in Context
This research output has an Altmetric Attention Score of 2. This is our high-level measure of the quality and quantity of online attention that it has received. This Attention Score, as well as the ranking and number of research outputs shown below, was calculated when the research output was last mentioned on 18 June 2016.
All research outputs
#16,721,208
of 25,373,627 outputs
Outputs from International Journal of Chronic Obstructive Pulmonary Disease
#1,613
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Outputs of similar age
#181,585
of 311,866 outputs
Outputs of similar age from International Journal of Chronic Obstructive Pulmonary Disease
#51
of 79 outputs
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