FOT vs Spirometry: Key Differences Every Pulmonologist Should Know
Lung function testing is a cornerstone of respiratory medicine. Among the available tools, spirometry remains the most widely used and well-established method for assessing airflow limitation. However, everyday clinical practice often presents situations where spirometry alone does not provide sufficient insight. As respiratory diagnostics evolve, pulmonologists are increasingly exploring advanced techniques such as the Forced Oscillation Technique (FOT) . Understanding the differences between FOT and spirometry—and how they complement each other—can help clinicians make more confident, patient-appropriate decisions. Spirometry in Clinical Practice Spirometry measures airflow and lung volumes during forced respiratory maneuvers. It plays a vital role in the diagnosis and management of conditions such as asthma and COPD. Key strengths of spirometry include: Standardized and widely accepted clinical guidelines Useful for diagnosing airflow obstruction Effective for routine ...