The inspiratory loop of PFT in vocal cord dysfunction can have flattened appearance

• related: vocal cord dysfunction can be an asthma mimic
• tags: #permanent

---

Links to this note

• PFT and lung functions

  • The inspiratory loop of PFT in vocal cord dysfunction can have flattened appearance

• vocal cord dysfunction can be an asthma mimic

  • One can differentiate between the two with physical exam and PFT. On physical exam, patients with vocal cord dysfunction will have predominantly upper airway wheeze and stridor. On PFT, there will not be bronchodilator response. Methacholine challenge will also be negative, as this is mechanical defect and not reactive inflammation. The inspiratory loop of PFT in vocal cord dysfunction can have flattened appearance.[^1]

• upper airway disorders

  • The inspiratory loop of PFT in vocal cord dysfunction can have flattened appearance