What is the probable diagnosis in the patient with below flow volume loop (FVL)?
The above FVL is a typical of fixed central airway obstruction (Either above or below the thoracic inlet) such as tracheal stenosis. In this, there is limitation to peak flow rate,Flattened inspiratory and expiratory curves are seen. Other FVL patterns: 1.Normal 2. Airflow obstruction:- COPD 3. Fixed Upper Airway obstruction 4.Variable upper airway obstruction 5.
Restrictive airway disease
Tracheal stenosis
Obstructive airway disease
None of the above
Pneumonia