Techniques to assess tissue oxygenation in the clinical setting

Area of Science:

• Physiology
• Medical Technology

Background:

• The microcirculation is vital for maintaining physiological balance and is implicated in various disease states.
• Effective assessment of microvascular function is essential for accurate diagnosis and treatment.
• Current methods for evaluating the microcirculation vary in complexity and applicability.

Purpose of the Study:

• To review current knowledge on assessing the microcirculation.
• To emphasize methods suitable for bedside application.
• To provide a comprehensive overview of microvascular assessment techniques.

Main Methods:

• Direct assessment of microvascular perfusion using laser Doppler flowmetry and imaging techniques.
• Indirect assessment via regional capnometry and evaluation of oxygen delivery-consumption mismatch.
• Measurement of oxygen pressure and hemoglobin oxygen saturation for oxygen availability.
• Venous plethysmography for assessing microvascular function.

Main Results:

• Multiple methods exist for assessing microvascular perfusion, oxygen availability, and function.
• Bedside applicability is a key consideration for practical clinical use.
• A combination of techniques may be necessary for a comprehensive microvascular assessment.

Conclusions:

• Bedside assessment of the microcirculation is feasible using various techniques.
• Understanding these methods aids in managing health and disease.
• Further development and validation of bedside tools are important for clinical translation.