Assessment of Disease Severity: Spirometry not only aids in diagnosis but also helps assess the severity of lung diseases. By comparing spirometry results to established norms, healthcare providers can determine the extent of airflow limitation, the degree of obstruction, or the presence of restrictive patterns. This information guides treatment decisions and helps monitor disease progression over time.

Monitoring Treatment Response: Spirometry is used to assess the response to treatment in patients with lung diseases. Regular spirometry measurements can track changes in lung function over time, indicating whether treatments such as bronchodilators, corticosteroids, or other therapies are effectively managing the condition. Adjustments to treatment plans can be made based on spirometry results to optimize patient outcomes.

Risk Assessment: Spirometry can identify individuals at risk of developing lung diseases before symptoms become apparent. For example, it can detect early signs of airflow limitation in smokers or individuals with a family history of lung disease, allowing for early intervention and preventive measures.

Preoperative Evaluation: Spirometry is often used as part of preoperative evaluations to assess lung function and identify patients at increased risk of postoperative complications, particularly in surgeries involving the chest or respiratory system. This information helps guide perioperative management and improves patient safety.

Occupational Health Monitoring: In occupational settings where workers may be exposed to respiratory hazards such as dust, chemicals, or fumes, spirometry is used for monitoring lung function over time. Regular testing helps identify work-related lung diseases early, enabling interventions to reduce further exposure and prevent disease progression.

Overall, spirometry plays a crucial role in the comprehensive evaluation, management, and monitoring of respiratory health.