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Spirometry: a key diagnostic test in pulmonary medicine.

J K Stoller1

  • 1Department of Pulmonary Disease, Cleveland Clinic Foundation, OH 44195.

Cleveland Clinic Journal of Medicine
|January 1, 1992
PubMed
Summary

Spirometry is a key test for diagnosing airflow obstruction. This simple, inexpensive lung function test, including the forced expiratory volume in 1 second and flow-volume loop, aids in assessing respiratory symptoms and identifying airway issues.

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Area of Science:

  • Pulmonary Medicine
  • Respiratory Physiology

Background:

  • Spirometry is a fundamental pulmonary function test.
  • It evaluates airflow obstruction through forced expiratory maneuvers.

Observation:

  • Measurements are displayed as volume-time (spirogram) and flow-volume loop tracings.
  • Forced expiratory volume in 1 second (FEV1) quantifies obstruction severity.
  • Flow-volume loops identify upper airway obstruction.

Findings:

  • Spirometry effectively assesses the degree of airflow obstruction.
  • Flow-volume loops are crucial for diagnosing upper airway abnormalities.
  • These findings can differentiate from obstructive lung diseases.

Implications:

  • Spirometry is a valuable, cost-effective tool for respiratory assessment.
  • It should be widely utilized in patients presenting with respiratory symptoms.
  • Liberal use can improve diagnostic accuracy for lung and airway conditions.

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