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. May-Jun 1982;18(3):419-25.

Lung Volumes in Healthy Nonsmoking Adults

  • PMID: 7074238

Lung Volumes in Healthy Nonsmoking Adults

R O Crapo et al. Bull Eur Physiopathol Respir. .


Total lung capacity (TLC), functional residual capacity, residual volume, and corresponding 95% confidence intervals were measured in 245 healthy nonsmoking person (122 women, 123 men) using a single-breath helium technique. Prediction equations for lung volumes were generated by multiple linear regression. The resultant equations are similar to previously published equations using multiple-breath gas equilibration techniques. Measured 95% confidence intervals can be closely approximated by using two times the standard error of the estimate for each equation, but cannot be approximated by using +/- 20% of the predicted value. Radiographic TLC was not significantly different from the helium dilution TLC.

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