Microcirculation and Mitochondria: The Critical Unit.

Area of Science:

• Critical care medicine
• Physiology
• Biochemistry

Background:

• Critical illness frequently presents with hemodynamic instability affecting both macro and microcirculation.
• Mitochondrial dysfunction is a key factor in critical illness, impairing cellular energy metabolism and oxygen utilization.
• A strong link exists between microcirculatory disturbances and mitochondrial dysfunction in critically ill patients.

Purpose of the Study:

• To introduce the concept of the "critical unit," integrating microcirculation and mitochondria.
• To highlight the importance of the endothelial glycocalyx within the microcirculation component.
• To present novel techniques for simultaneous monitoring of microcirculation and mitochondria.

Main Methods:

• Review of existing literature on microcirculation and mitochondrial function in critical illness.
• Introduction of the "critical unit" framework.
• Discussion of real-time synchronous monitoring technologies for the critical unit.

Main Results:

• The "critical unit" comprises microcirculation (microvascular network, endothelial cells, glycocalyx) and mitochondria.
• Synchronous monitoring techniques enable real-time assessment of the critical unit.
• The critical unit concept provides a framework for understanding pathogenic factors in critical illness.

Conclusions:

• The "critical unit" is a novel concept unifying microcirculation and mitochondrial function.
• Real-time critical unit monitoring offers potential for improved patient assessment.
• Critical unit-guided treatment strategies may enhance outcomes in critical illness.