[Hemodynamic changes in liver and multi-organ transplantation]

Area of Science:

• Surgical Oncology
• Transplant Surgery
• Critical Care Medicine

Background:

• Multivisceral transplantation (MTV) is a complex procedure for abdominal malignancies.
• Limited understanding of intraoperative outcomes hinders wider clinical application of MTV.
• Comparative analysis of hemodynamic and respiratory changes is crucial for optimizing MTV procedures.

Purpose of the Study:

• To compare intraoperative hemodynamic and respiratory parameters between multivisceral transplantation (MTV) and orthotopic liver transplantation (OLTX).
• To identify specific physiological changes occurring during different phases of MTV and OLTX.

Main Methods:

• Prospective observational study comparing 12 MTV cases with 14 OLTX cases.
• Data collected during four distinct phases: basal, visceral manipulation, reperfusion, and final.
• Hemodynamic (cardiac output, cardiac frequency, pulmonary arterial pressure) and respiratory (temperature, pH, base excess) parameters were monitored.

Main Results:

• No significant differences observed in the basal phase between MTV and OLTX groups.
• During visceral manipulation (Phase II), MTV exhibited lower temperature and pulmonary arterial pressure.
• The reperfusion phase (Phase III) revealed significant differences: MTV showed increased temperature, decreased cardiac frequency, pH, and base excess, but higher pulmonary arterial pressure and cardiac output compared to OLTX.

Conclusions:

• Multivisceral transplantation presents unique intraoperative physiological challenges compared to liver transplantation.
• Significant hemodynamic and respiratory alterations occur during the reperfusion phase of MTV, necessitating careful management.
• Further research into postoperative outcomes is warranted to fully understand the implications of these intraoperative findings.