Diffusion Capacity: Measuring Gas Exchange Efficiency
During a diffusion capacity test, patients inhale a small amount of carbon monoxide (CO). The uptake of this gas through the alveoli into the bloodstream provides insight into the efficiency of pulmonary gas exchange. Additional inert gases, such as helium (He) or methane (CH₄), can be used to assess the lungs’ residual volume.
Lung ventilation: The Lung Clearance Index (LCI)
The Lung Clearance Index (LCI) reflects how many breaths are required to completely exchange the lung volume. By introducing and subsequently washing out an inert tracer gas such as sulfur hexafluoride (SF₆), ventilation inhomogeneities can be detected—crucial for the early diagnosis of conditions like cystic fibrosis.
Optical Measurement Technology from Axetris: Precision Meets Reliability
Non-contact optical measurement offers a range of advantages in demanding diagnostic applications:
- Real-time measurements: Instantly operational with no warm-up required.
- Low maintenance: Robust systems with minimal calibration needs and long service life.
- Specificity: Precisely tuned to the target gas without cross-sensitivity to other respiratory gases.
With the LGD-OEM module, Axetris provides a ready-to-integrate system solution, while its infrared source serves as a high-performance component for custom in-house developments. Axetris’ advanced technology enables lung function diagnostics to be more precise, efficient, and patient-friendly.
Discover how Axetris can support your medical device innovation—contact our team for more information or a technical consultation.
