1. What is Airway Conductance?

Airway Conductance (GAW) is the airway conductance relative to lung volume or the gradient of the line showing conductance as a function of lung volume. It represents the ease with which air can flow through the respiratory airways.

2. How Does the Calculator Work?

The calculator uses the Airway Conductance formula:

Where:

• \( GAW \) — Airway Conductance (L/s/cmH₂O)
• \( RAW \) — Airway Resistance (cmH₂O/L/s)

Explanation: Airway Conductance is the reciprocal of Airway Resistance, representing how easily air can flow through the airways.

3. Importance of Airway Conductance Calculation

Details: Accurate Airway Conductance measurement is crucial for assessing respiratory function, diagnosing airway diseases, and evaluating the effectiveness of bronchodilator therapy.

4. Using the Calculator

Tips: Enter Airway Resistance value in cmH₂O/L/s. The value must be valid (greater than 0).

5. Frequently Asked Questions (FAQ)

Q1: What is the relationship between conductance and resistance?
A: Conductance is the reciprocal of resistance. Higher conductance indicates easier airflow, while higher resistance indicates more difficult airflow.

Q2: What are normal Airway Conductance values?
A: Normal values vary but typically range between 0.1-0.3 L/s/cmH₂O in healthy adults, though values depend on lung volume and individual factors.

Q3: When is Airway Conductance measurement important?
A: It's important in diagnosing and monitoring obstructive lung diseases like asthma, COPD, and evaluating bronchodilator response.

Q4: How does lung volume affect Airway Conductance?
A: Airway Conductance increases with lung volume as airways expand, providing less resistance to airflow.

Q5: What factors can affect Airway Conductance measurements?
A: Factors include lung volume, bronchial smooth muscle tone, mucosal edema, secretions, and external compression of airways.