1. Precision in Diagnosing and Classifying COPD: Comparison of Historical Height with Current Height and Arm Span to Predict FEV1
- Author
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Joan Munby, Kathryn King, Niall Keaney, Monica Price, Andrea Kay, Ian Taylor, and Khalid Ansari
- Subjects
Pulmonary and Respiratory Medicine ,Gerontology ,medicine.medical_specialty ,COPD ,business.industry ,Chronic obstructive pulmonary disease ,Osteoporosis ,Disease progression ,Regression analysis ,osteoporosis ,medicine.disease ,Article ,respiratory tract diseases ,Internal medicine ,historical height ,Cohort ,Cardiology ,Arm span ,Medicine ,Lung volumes ,business ,Lung function - Abstract
Background: Measured reductions in lung function, as a result of COPD, use a measured current value and make comparisons to a determined 'normal' value arrived at using a regression equation based upon a patients height. Osteoporosis is a recognised co-morbidity in patients with chronic obstructive pulmonary disease (COPD) and may cause excessive height loss resulting in the 'normal' values and disease progression being under-estimated. Purpose: The aim of the study was to examine the height variation in a cohort of COPD patients and controls over a 7-8 years period and evaluate its impact on estimates of lung function and hence COPD progression. Methods: In 1999-2002 we studied a cohort of primary care patients in Sunderland, UK with and without COPD and re- examined 104 (56 male) during 2007-2009. We calculated FEV1% predicted for actual and estimated height (armspan/1.03 and armspan/1.01 in males and females respectively). Results: In 1999-2002 the subjects were aged 62.6 ± 9.4 years, BMI was 26.4± 4.7 kg/m 2 , predicted FEV1 was 59.0 ±16.0, and mean actual height was 167.3±8.9cm. The actual height changed significantly (p
- Published
- 2012
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