Miniaturization in cardiopulmonary bypass

Perfusion ◽  
2003 ◽  
Vol 18 (4) ◽  
pp. 219-224 ◽  
Author(s):  
Ludwig K von Segesser ◽  
Piergiorgio Tozzi ◽  
Iker Mallbiabrrena ◽  
David Jegger ◽  
Judith Horisberger ◽  
...  
Keyword(s):  
Clinical Practice ◽  
Cardiopulmonary Bypass ◽  
Systematic Approach ◽  
Red Cell ◽  
Oncotic Pressure ◽  
Suction System ◽  
Key Technology ◽  
Priming Volume ◽  
Tremendous Progress ◽  
Cardiac Operations

Cardiopulmonary bypass (CPB) remains the key technology for more complex cardiac operations. The perfusion equipment used nowadays has seen tremendous progress since its introduction into clinical practice 50 years ago. However, overall, CPB is still far from perfect. Major haemodilution is not only a problem for red cell-dependent gas transport, but also for the platelet and humeral factor-dependent coagulation, the protein-dependent intravascular oncotic pressure and so forth. Reduction of the priming volume through further miniaturization of CPB equipment is, therefore, the most obvious next step. A systematic approach needs to optimize all CPB components, including pumps, oxygenator/heat exchanger structures, filters, reservoirs, cardiotomy suction, tubings and cannulas. This report provides an update of already commercially available low prime perfusion devices (e.g., the CORx integrated pump-oxygenator) as well as promising prototypes like the smart suction system and the smartcanula.™

Air Embolism on Cardiopulmonary Bypass

2019 ◽  
pp. 160-165
Author(s):  
Aaron Hudson ◽  
Ryan Hood
Keyword(s):  
Cardiac Surgery ◽  
Clinical Practice ◽  
Cardiopulmonary Bypass ◽  
Sudden Death ◽  
Air Embolism ◽  
Cardiac Surgical Procedures ◽  
Daily Basis ◽  
Team Members ◽  
Cardiac Surgeons ◽  
Almost All

The danger associated with air embolism in cardiac surgery has been well established for over 125 years. In the first volume of Annals of Surgery, published in 1885, long preceding the era of cardiac surgery and the use of extracorporeal circulatory techniques, Dr. Nicholas Senn alluded to the ensuing calamity caused by air embolism: “I intend on this occasion to call your attention to one of the most dreaded and, I may add, one of the most uncontrollable causes of sudden death—I allude to air-embolism.”1,2 Since the advent of modern cardiac surgery, much attention has been focused on the prevention of air embolism by cardiac surgeons, anesthesiologists, and perfusionists alike. Indeed, all three team members are critically responsible for the safe conduct of thousands of cardiac surgical procedures occurring on a daily basis worldwide. While the morbidity and mortality of massive air embolism is exceedingly high, most believe that with appropriate training and unwavering vigilance during clinical practice, almost all massive air emboli can be prevented.3

Effect of Albumin Addition to Cardiopulmonary Bypass Prime on Outcomes in Children Undergoing Open-Heart Surgery (EACPO Study)—A Randomized Controlled Trial

2020 ◽  
pp. 215013512095908
Author(s):  
Abdul Rauf ◽  
Reena K. Joshi ◽  
Neeraj Aggarwal ◽  
Mridul Agarwal ◽  
Manendra Kumar ◽  
...  
Keyword(s):  
Intensive Care Unit ◽  
Intensive Care ◽  
Cardiopulmonary Bypass ◽  
Heart Surgery ◽  
Open Heart Surgery ◽  
Controlled Study ◽  
Risk Category ◽  
Open Heart ◽  
Oncotic Pressure ◽  
Randomized Controlled

Background: There is a paucity of literature regarding the association of high oncotic priming solutions for pediatric cardiopulmonary bypass (CPB) and outcomes, and no consensus exists regarding the composition of optimal CPB priming solution. This study aimed to examine the impact of high oncotic pressure priming by the addition of 20% human albumin on outcomes. Methods: Double-blinded, randomized controlled study was done in the pediatric cardiac intensive care unit of a tertiary care hospital. Consecutive children with congenital heart diseases admitted for open-heart surgery were randomized into two groups, where the study group received an additional 20% albumin to conventional blood prime before CPB initiation. Results: We enrolled 39 children in the high oncotic prime (added albumin) group and 37 children in the conventional prime group. In the first 24-hour postoperative period, children in the albumin group had significantly lower occurrence of hypotension (28.2% vs 54%, P = .02), requirement of fluid boluses (25.6% vs 54%, P = .006), and lactate clearance time (6 vs 9 hours, P < .001). Albumin group also had significantly higher platelet count (×103/µL) at 24 hours (112 vs 91, P = .02). There was no significant difference in intra-CPB hemodynamic parameters and incidence of acute kidney injury. In subgroup analysis based on risk category, significantly decreased intensive care unit stay (4 vs 5 days, P = .04) and hospital stay (5 vs 7 days, P = .002) were found in the albumin group in low-risk category. Conclusion: High oncotic pressure CPB prime using albumin addition might be beneficial over conventional blood prime, and our study does provide a rationale for further studies.

Results with continuous cardiopulmonary bypass for the bidirectional cavopulmonary anastomosis

2008 ◽  
Vol 18 (2) ◽  
pp. 147-152 ◽  
Author(s):  
Robroy H. MacIver ◽  
Robert D. Stewart ◽  
Carl L. Backer ◽  
Constantine Mavroudis
Keyword(s):  
Cardiopulmonary Bypass ◽  
Circulatory Arrest ◽  
Deep Hypothermic Circulatory Arrest ◽  
Moderate Hypothermia ◽  
Absorbable Sutures ◽  
Cavopulmonary Anastomosis ◽  
Postoperative Length ◽  
The Mean ◽  
Bidirectional Cavopulmonary Anastomosis ◽  
Cardiac Operations

AbstractObjectiveSome centres have proposed creating the bidirectional cavopulmonary anastomosis without cardiopulmonary bypass, while others continue to use deep hypothermic circulatory arrest. The purpose of this review is to evaluate the results of using continuous cardiopulmonary bypass with moderate hypothermia, perhaps the most commonly used of the three techniques for this procedure.MethodsBetween 1990 and 2005, 114 patients, having a mean age of 1.58 years, with a median age of 8 months, and ranging from 3 months to 16 years, underwent creation of either a unilateral cavopulmonary anastomosis, in 94 cases, or bilateral anastomoses in 20 cases. All had continuous cardiopulmonary bypass with moderate hypothermia at 32 degrees Celsius, with 24 also having aortic cross-clamping with cardioplegia for simultaneous intracardiac procedures. Interrupted absorbable sutures were used to create the anastomosis in 105 patients.ResultsPerioperative mortality was 5%, with 6 of the patients dying. The mean period of cardiopulmonary bypass for an isolated anastomosis was 91 minutes, with a range from 44 to 160 minutes. In 10 patients (8.8%), it was necessary to place a graft to augment the anastomosis. The average postoperative length of stay was 7.9 days for those undergoing an isolated unilateral anastomosis, and 16.4 days for patients undergoing combined cardiac operations. We have now created the Fontan circulation in 79 of the patients, at an average interval from the bidirectional cavopulmonary anastomosis of 2.1 plus or minus 1.14 years. In 76 patients, we performed postoperative angiograms, and none revealed any stenoses.ConclusionsThe bidirectional cavopulmonary anastomosis can be performed successfully with continuous cardiopulmonary bypass and moderate hypothermia with a beating heart, avoiding circulatory arrest. The use of interrupted and absorbable sutures was not associated with any late anastomotic stenosis.

A clinical evaluation of platelet function, haemolysis and oxygen transfer during cardiopulmonary bypass comparing the Quantum HF-6700 to the HF-5700 hollow fibre membrane oxygenator

Perfusion ◽  
2000 ◽  
Vol 15 (6) ◽  
pp. 479-484 ◽  
Author(s):  
A O Chukwuemeka ◽  
M RJ Turtle ◽  
U H Trivedi ◽  
G E Venn ◽  
D J Chambers
Keyword(s):  
Cardiopulmonary Bypass ◽  
Platelet Function ◽  
Clinical Evaluation ◽  
Oxygen Transfer ◽  
Artery Bypass ◽  
Membrane Surface ◽  
Platelet Activating Factor ◽  
Hollow Fibre ◽  
Priming Volume ◽  
First Time

The continued improvement of oxygenators is an important aspect of patient safety during cardiopulmonary bypass (CPB). The purpose of this study was to compare the Bard William Harvey HF-5700 oxygenator to the upgraded Bard Quantum HF-6700, which has recently been introduced into clinical practice. No clinical evaluation of this device has been published to date. The two oxygenators differ principally in that the Quantum has a smaller priming volume, achieved at the expense of a smaller membrane surface area which could result in sub-optimal gas exchange characteristics, increased haemolysis and increased platelet dysfunction during CPB. Twenty adult patients undergoing elective, first time coronary artery bypass grafting (CABG) were randomly assigned either to the HF-5700 ( n=10) or to the HF-6700 ( n=10) group. One patient underwent mitral valve repair in addition to CABG and was excluded from further study. There were no statistically significant differences in either preoperative or operative parameters between the two groups. Samples were obtained at the start of CPB, at 30 min, 60 min, at the end of CPB and at 1 h following termination of CPB. No significant differences between the two groups were found in oxygen transfer, haemolysis (plasma haptoglobin levels) or platelet function (a novel platelet activating factor (PAF)-induced platelet activation test) at any of the time points during CPB. It was concluded that the Quantum HF-6700 matches the HF-5700 for the parameters studied, whilst having the advantage of requiring a smaller priming volume.

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