1. What is Post Op DLCO?

Post Op DLCO (ppoDLCO) is the predicted diffusing capacity of the lungs for carbon monoxide after lung resection surgery in dogs. It helps assess the remaining pulmonary function following the removal of lung segments.

2. How Does the Calculator Work?

The calculator uses the ppoDLCO equation:

Where:

• \( \text{preoperative DLCO} \) — Diffusing capacity before surgery (%)
• \( \text{segments removed} \) — Number of lung segments removed
• \( \text{total segments} \) — Total number of lung segments

Explanation: The equation estimates the remaining diffusing capacity based on the proportion of lung tissue removed during surgery.

3. Importance of ppoDLCO Calculation

Details: Calculating ppoDLCO helps predict postoperative pulmonary function, assess surgical risk, and guide decisions about the extent of lung resection that can be safely performed in dogs.

4. Using the Calculator

Tips: Enter preoperative DLCO (%), number of segments removed, and total number of segments. All values must be valid (DLCO > 0, segments removed ≤ total segments).

5. Frequently Asked Questions (FAQ)

Q1: What is a normal DLCO range for dogs?
A: Normal DLCO varies by breed and size, but typically ranges between 80-120% of predicted values in healthy dogs.

Q2: How many lung segments do dogs have?
A: Dogs typically have 18-20 lung segments (7 in left lung, 11-13 in right lung), though this can vary slightly by breed.

Q3: What is a concerning ppoDLCO value?
A: Values below 40% predicted may indicate high risk for postoperative respiratory complications.

Q4: Are there limitations to this calculation?
A: This is an estimate and doesn't account for compensatory mechanisms or individual variations in lung function.

Q5: Should this be the only factor in surgical decisions?
A: No, ppoDLCO should be considered alongside other factors like overall health, exercise tolerance, and other pulmonary function tests.