These tools will no longer be maintained as of December 31, 2024. Archived website can be found here. PubMed4Hh GitHub repository can be found here. Contact NLM Customer Service if you have questions.


Pubmed for Handhelds

PUBMED FOR HANDHELDS

Search MEDLINE/PubMed

  • Title: Errors due to data reduction in single-breath method for measurement of pulmonary blood flow.
    Author: Grønlund J.
    Journal: J Appl Physiol Respir Environ Exerc Physiol; 1982 Jan; 52(1):104-8. PubMed ID: 6800982.
    Abstract:
    The validity and precision of the single-breath method for determination of pulmonary blood flow suggested by Kim et al. (J. Appl. Physiol. 21: 1338-1344, 1966) have been estimated by a number of workers with very different results. The present work is an analysis of the errors that arise solely due to the data-reduction procedure used to calculate the pulmonary blood flow from the primary data. The analysis, which consists of a computer simulation of the system, shows that very considerable errors may arise from the data-reduction procedure itself and that these errors are very sensitive to small differences in the experimental design. The basic source of errors in the data-reduction procedure seems to be the use of a fitted polynomial to computer derivatives of a nonpolynomial experimental curve. Finally, the analysis suggests a design in which the errors would be quantitatively insignificant.
    [Abstract] [Full Text] [Related] [New Search]