[Anesthesia-relevant changes in metabolic parameters with different circulatory and liver functions]

Area of Science:

• Critical Care Medicine
• Transplantation Surgery
• Cardiovascular Physiology

Context:

• Optimizing oxygen delivery (DO2) and oxygen consumption (VO2) is crucial in critically ill patients.
• Liver transplantation involves significant hemodynamic and metabolic changes, particularly during caval cross-clamping.
• Existing strategies for managing DO2 and VO2 in this context vary.

Purpose:

• To evaluate the clinical relevance of therapeutic interventions guided by metabolic monitoring in liver transplant recipients.
• To analyze the relationship between oxygen transport, DO2, and VO2 during orthotopic liver transplantation.
• To investigate perioperative changes in hemodynamic and metabolic parameters in patients undergoing liver transplantation.

Summary:

• Hemodynamic measurements, DO2, and VO2 were recorded at six timepoints during liver transplantation in 162 patients (survivors, non-survivors, graft non-function).
• Caval cross-clamping led to decreased cardiac index, DO2, and VO2 across all groups.
• While VO2 increased post-reperfusion in survivors and non-survivors, it further decreased in the graft non-function group, with no significant correlation found between oxygen transport, VO2, and blood lactate.

Impact:

• Findings suggest that metabolic monitoring during liver transplantation may reveal distinct patterns of oxygen consumption related to graft function.
• Highlights the complex interplay of oxygen transport dynamics and metabolic state in liver transplant recipients.
• Informs potential adjustments to perioperative management strategies based on real-time metabolic data.