Impact of direct substitution of arm span length for current standing height in elderly COPD

Arm span length is related to standing height and has been studied as a substitute for current standing height for predicting lung function parameters. However, it has never been studied in elderly COPD patients. To evaluate the accuracy of substituting arm span length for current standing height in...

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Published in:International journal of chronic obstructive pulmonary disease 2015, Vol.10 (Issue 1), p.1173-1178
Main Authors: Pothirat, Chaicharn, Chaiwong, Warawut, Phetsuk, Nittaya
Format: Article
Language:English
Subjects:
Abbreviations
Age
Age Factors
Aged
Aged patients
Anthropometry - methods
Body Height
Body mass index
Bronchodilator Agents - therapeutic use
Chi-Square Distribution
Chronic obstructive pulmonary disease
Classification
Cross-Sectional Studies
Evaluation
Forced Expiratory Volume
Humans
Lung - drug effects
Lung - physiopathology
Lung diseases
Lung diseases, Obstructive
Middle Aged
Original Research
Osteoporosis
Physiological aspects
Predictive Value of Tests
Pulmonary Disease, Chronic Obstructive - classification
Pulmonary Disease, Chronic Obstructive - diagnosis
Pulmonary Disease, Chronic Obstructive - drug therapy
Pulmonary Disease, Chronic Obstructive - physiopathology
Pulmonary function tests
Severity of Illness Index
Sexes
Spirometry
Thailand
Upper Extremity - anatomy & histology
Vital Capacity
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Chaiwong, Warawut
Phetsuk, Nittaya
description Arm span length is related to standing height and has been studied as a substitute for current standing height for predicting lung function parameters. However, it has never been studied in elderly COPD patients. To evaluate the accuracy of substituting arm span length for current standing height in the evaluation of pulmonary function parameters and severity classification in elderly Thai COPD patients. Current standing height and arm span length were measured in COPD patients aged >60 years. Postbronchodilator spirometric parameters, forced vital capacity (FVC), forced expiratory volume in first second (FEV1), and ratio of FEV1/FVC (FEV1%), were used to classify disease severity according to global initiative for chronic obstructive lung disease criteria. Predicted values for each parameter were also calculated separately utilizing current standing height or arm span length measurements. Student's t-tests and chi-squared tests were used to compare differences between the groups. Statistical significance was set at P
doi_str_mv 10.2147/COPD.S84225
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However, it has never been studied in elderly COPD patients. To evaluate the accuracy of substituting arm span length for current standing height in the evaluation of pulmonary function parameters and severity classification in elderly Thai COPD patients. Current standing height and arm span length were measured in COPD patients aged &gt;60 years. Postbronchodilator spirometric parameters, forced vital capacity (FVC), forced expiratory volume in first second (FEV1), and ratio of FEV1/FVC (FEV1%), were used to classify disease severity according to global initiative for chronic obstructive lung disease criteria. Predicted values for each parameter were also calculated separately utilizing current standing height or arm span length measurements. Student's t-tests and chi-squared tests were used to compare differences between the groups. Statistical significance was set at P&lt;0.05. 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A total of 106 COPD patients with a mean age of 72.1±7.8 years, mean body mass index of 20.6±3.8 kg/m(2), and mean standing height of 156.4±8.3 cm were enrolled. The mean arm span length exceeded mean standing height by 7.7±4.6 cm (164.0±9.0 vs 156.4±8.3 cm, P&lt;0.001), at a ratio of 1.05±0.03. Percentages of both predicted FVC and FEV1 values based on arm span length were significantly lower than those using current standing height (76.6±25.4 vs 61.6±16.8, P&lt;0.001 and 50.8±25.4 vs 41.1±15.3, P&lt;0.001). Disease severity increased in 39.6% (42/106) of subjects using arm span length over current standing height for predicted lung function. Direct substitution of arm span length for current standing height in elderly Thai COPD patients should not be recommended in cases where arm span length exceeds standing height by more than 4 cm.</abstract><cop>New Zealand</cop><pub>Dove Medical Press Limited</pub><pmid>26150709</pmid><doi>10.2147/COPD.S84225</doi><tpages>6</tpages><oa>free_for_read</oa></addata></record>
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source Taylor & Francis Open Access; Publicly Available Content Database; PubMed Central
subjects Abbreviations
Age
Age Factors
Aged
Aged patients
Anthropometry - methods
Body Height
Body mass index
Bronchodilator Agents - therapeutic use
Chi-Square Distribution
Chronic obstructive pulmonary disease
Classification
Cross-Sectional Studies
Evaluation
Forced Expiratory Volume
Humans
Lung - drug effects
Lung - physiopathology
Lung diseases
Lung diseases, Obstructive
Middle Aged
Original Research
Osteoporosis
Physiological aspects
Predictive Value of Tests
Pulmonary Disease, Chronic Obstructive - classification
Pulmonary Disease, Chronic Obstructive - diagnosis
Pulmonary Disease, Chronic Obstructive - drug therapy
Pulmonary Disease, Chronic Obstructive - physiopathology
Pulmonary function tests
Severity of Illness Index
Sexes
Spirometry
Thailand
Upper Extremity - anatomy & histology
Vital Capacity
title Impact of direct substitution of arm span length for current standing height in elderly COPD
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