Initial results of an optimized perfusion system.

Area of Science:

• Cardiovascular Surgery
• Perfusion Technology
• Biomedical Engineering

Background:

• Extracorporeal circulation (ECC) can have negative effects.
• Optimization efforts focused on reducing priming volume, foreign surface area, and microbubble activity.
• Suction blood management was also optimized.

Purpose of the Study:

• To evaluate the impact of an optimized perfusion system (OPS) compared to a standard perfusion system (SPS).
• To assess changes in priming volume, hemodilution, and inflammatory markers.
• To determine the effect on blood transfusion requirements.

Main Methods:

• Retrospective study of 60 patients undergoing elective procedures.
• Patients divided into two groups: optimized perfusion system (OPS-group, n=30) and standard perfusion system (SPS-group, n=30).
• Comparison of demographic data, operation time, ECC time, and cross-clamp time.

Main Results:

• No significant differences in patient demographics or operation time.
• Longer ECC and cross-clamp times in the OPS group.
• Significantly lower effective priming volume (775ml vs 1610ml), reduced hemoglobin drop (2.7g/dl vs 4.2g/dl), and lower C-reactive protein levels (121 U/l vs 164 U/l) in the OPS group.
• A 33% reduction in overall blood transfusions and an increase in patients not requiring transfusions (53% vs 37%) were observed.

Conclusions:

• The optimized perfusion system significantly reduced priming volume and subsequent hemodilution.
• The OPS led to a reduction in blood transfusions and the inflammatory response.
• These findings suggest improved patient outcomes with the optimized perfusion strategy.