Optimising stroke volume and oxygen delivery in abdominal aortic surgery: a randomised controlled trial

Area of Science:

• Cardiovascular Surgery
• Critical Care Medicine
• Anesthesiology

Background:

• Post-operative complications are frequent following open elective abdominal aortic surgery.
• Individualized goal-directed therapy (GDT) may enhance outcomes in high-risk surgical patients.
• This study investigated GDT's impact on complications and hospital stay in this population.

Purpose of the Study:

• To evaluate if individualized GDT, targeting stroke volume and oxygen delivery, reduces complications.
• To determine if this therapy minimizes intensive care unit (ICU) and hospital length of stay.
• To assess the efficacy of GDT in open elective abdominal aortic surgery.

Main Methods:

• Seventy patients undergoing open elective abdominal aortic surgery were randomized to GDT or conventional therapy.
• The GDT group received colloid boluses to optimize stroke volume and oxygen delivery (600 ml/min/m²).
• Hemodynamic data were collected, and patients were followed for 30 days.

Main Results:

• The GDT group achieved higher postoperative stroke volume index and oxygen delivery index.
• A significantly greater proportion of the GDT group met the oxygen delivery target (27/32 vs. 18/32).
• No significant differences were observed in complication rates or ICU/hospital length of stay between groups.

Conclusions:

• Perioperative individualized GDT targeting stroke volume and oxygen delivery did not reduce complications.
• This therapeutic approach did not impact ICU or hospital length of stay in patients undergoing open elective abdominal aortic surgery.