Neurogenic organ dysfunction syndrome after acute brain injury

Area of Science:

• Neuroscience
• Systems Biology
• Critical Care Medicine

Background:

• Systemic complications are frequent after acute brain injury (ABI), involving multiple organ systems.
• The underlying neurogenic mechanisms of these systemic issues are not fully understood.
• This study introduces neurogenic organ dysfunction syndrome (NODS) to describe systemic instability post-ABI.

Purpose of the Study:

• To explore the central neurogenic mechanisms of NODS using complex brain network theory.
• To investigate the roles of the central autonomic system (CAS) and central stress system (CSS) in systemic instability.
• To identify potential clinical interventions for NODS.

Main Methods:

• Analysis of the structural network of the CAS (cortical and subcortical autonomic networks).
• Examination of the functional network of the CSS, considering its hierarchical, hub, and modular structure.
• Application of complex brain network theory to understand homeostasis disruption post-ABI.

Main Results:

• ABI disrupts the dynamic balance between functional segregation (modules) and integration (hubs) within the CSS.
• Impaired functional integrity of the CSS, module activity, and hub integration are observed following ABI.
• Distinct pathological manifestations correlate with disturbances at different homeostatic system levels.

Conclusions:

• NODS arises from disruptions in the central neurogenic control of systemic stability after ABI.
• Understanding CSS network dynamics is crucial for early detection and management of NODS.
• Potential interventions include analgesia, sedation, neuromodulation, and receptor regulation to improve patient outcomes.