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Cognitive function and assessment of lung function in the elderly

N Carvalhaes-Neto1, H Lorino, C Gallinari

  • 1Service de Pharmacologie Clinique, INSERM U 296, Faculté de Médecine, Créteil, France.

American Journal of Respiratory and Critical Care Medicine
|November 1, 1995
PubMed
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Respiratory impedance measurements are more feasible than spirometry for assessing lung function in elderly patients with cognitive impairment. This technique offers a more reliable method for evaluating respiratory health in this population.

Area of Science:

  • Gerontology
  • Pulmonology
  • Medical Devices

Background:

  • Assessing lung function in the elderly, particularly those with cognitive impairment, presents challenges.
  • Traditional spirometry may be difficult to perform accurately in individuals with reduced cognitive capacity.
  • Alternative methods for lung function assessment are needed for this demographic.

Purpose of the Study:

  • To compare the feasibility of spirometry versus respiratory impedance measurements for assessing lung function in institutionalized elderly patients.
  • To evaluate the impact of cognitive function impairment on the successful execution of these pulmonary function tests.

Main Methods:

  • A study involving 208 institutionalized elderly patients with varying degrees of cognitive impairment (assessed by Mini-Mental State examination).

Related Experiment Videos

  • Respiratory impedance was measured using the forced oscillation technique.
  • Spirometry was also performed, and the feasibility rates of both methods were compared across cognitive function groups.

    • Main Results:

    • Respiratory impedance measurements were successfully performed in 159 patients, while spirometry was only feasible in 85.
    • The difference in feasibility rates was highly significant (p < 10^-6) and more pronounced in patients with severe cognitive impairment.
    • Among patients who completed both tests, significant correlations were observed between spirometry and respiratory impedance values.

    Conclusions:

    • Respiratory impedance measurement, using the forced oscillation technique, is significantly more feasible than spirometry in elderly patients with cognitive impairment.
    • This technique provides a more practical and reliable approach for evaluating lung function in this specific patient population.
    • The findings suggest respiratory impedance should be considered a valuable tool for geriatric respiratory assessment.