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The efficacy of low prime volume completely closed cardiopulmonary bypass in coronary artery revascularization
Hideaki Takai1, Kiyoyuki Eishi, Shiro Yamachika
1Department of Cardiovascular Surgery, Nagasaki University School of Medicine, Nagasaki, Japan.
Insights
Low prime volume cardiopulmonary bypass (LPVP) significantly reduces complications in coronary artery bypass grafting (CABG) surgery. This efficient CPB method leads to less blood loss, fewer transfusions, and faster patient recovery.
Area of Science:
- Cardiovascular Surgery
- Cardiopulmonary Bypass Technology
- Minimally Invasive Cardiac Procedures
Background:
- Standard cardiopulmonary bypass (CPB) can lead to deleterious effects.
- Minimizing prime volume in CPB circuits is crucial for patient outcomes.
- Percutaneous cardiopulmonary support (PCPS) systems offer potential for improved CPB circuits.
Purpose of the Study:
- To evaluate the efficacy of low prime volume completely closed cardiopulmonary bypass (LPVP) in arrested coronary artery bypass grafting (CABG).
- To demonstrate the benefits of an improved PCPS circuit designed to mitigate CPB-related complications.
Main Methods:
- A comparative study involving 228 isolated CABG procedures from April 1999 to May 2003.
- 47 procedures utilized LPVP (590 mL prime volume, closed circuit) (Group L).
- 86 procedures used standard prime volume open CPB (Group S), with cardiac arrest induced by warm blood cardioplegia.
Main Results:
- Group L showed significantly lower packed red blood cell transfusions (0.88 U vs. 2.1 U).
- Intraoperative lowest hematocrit was higher in Group L (28.7% vs. 22.4%).
- Group L experienced less blood loss (439 mL vs. 599 mL) and shorter ventilation times (5.1 hours vs. 10.4 hours).
Conclusions:
- LPVP demonstrates fewer deleterious operative effects compared to standard CPB.
- LPVP is associated with reduced blood loss, fewer transfusions, and earlier patient recovery.
- LPVP represents a highly efficient and beneficial form of cardiopulmonary bypass for CABG.
Purpose:
This study was conducted to evaluate and demonstrate the efficacy of low prime volume completely closed cardiopulmonary bypass (LPVP) in arrested coronary artery bypass grafting (CABG). We improved the percutaneous cardiopulmonary support (PCPS) circuit to reduce the deleterious effects of cardiopulmonary bypass (CPB).
Methods:
Between April 1999 and May 2003, among 228 isolated CABG procedures, 47 procedures using LPVP (group L) and 86 procedures using standard prime volume open CPB (group S) were compared. The LPVP priming volume was 590 mL; the circuit was completely closed with a soft reservoir. Cardiac arrest was obtained by warm blood cardioplegia.
Results:
The following average values were obtained: packed red blood cell transfusions, 0.88 +/- 1.4 U (group L) vs. 2.1 +/- 2.5 U (group S); intraoperative lowest hematocrit value, 28.7 +/- 4.6% (group L) vs. 22.4 +/- 3.3% (group S); blood loss over first 24 hours, 439 +/- 242 mL (group L) vs. 599 +/- 409 mL (group S); ventilation time, 5.1 +/- 3.1 hours (group L) vs. 10.4 +/- 14.9 hours (group S).
Conclusion:
Compared to standard prime volume open CPB, LPVP resulted in fewer deleterious operative effects. Less blood loss, fewer blood transfusions, and earlier patient recovery was noted with LPVP. Thus, LPVP is a very efficient form of CPB.
