Results 311 to 320 of about 2,641,039 (362)
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Assisted circulation without systemic heparinization
Journal of Cardiothoracic and Vascular Anesthesia, 1994The need for improvements in materials and equipment for extracorporeal circulation has been obvious for years. Among the surfaces with biologically active compounds, those with heparin binding have been found sufficiently thromboresistant and particularly suitable for different types of artificial perfusion.
Weiss, B M +5 more
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Beyond the VAD: Human Factors Engineering for Mechanically Assisted Circulation in the 21st Century.
Artificial Organs, 2016Thousands of ventricular assist devices (VADs) currently provide circulatory support to patients worldwide, and dozens of heart pump designs for adults and pediatric patients are under various stages of development in preparation for translation to ...
A. Throckmorton +3 more
semanticscholar +1 more source
Horizons in Assisted Circulation
1989Research on the artificial heart was initiated about 30 years ago, many types of circulatory assist devices intended for different clinical applications have been developed and introduced. Although enthusiastically pursued by many investigators, the ultimate goal, a totally implantable permanent artificial heart, still requires many years of research ...
H. Emoto, L. K. Fujimoto, Y. Nosé
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ASAIO journal (1992)
Thrombotic and bleeding events are the most common hematologic complications in patients with mechanically assisted circulation and are closely related to device-induced platelet dysfunction. In this study, we sought to link computational fluid dynamics (
Jiafeng Zhang +6 more
semanticscholar +1 more source
Thrombotic and bleeding events are the most common hematologic complications in patients with mechanically assisted circulation and are closely related to device-induced platelet dysfunction. In this study, we sought to link computational fluid dynamics (
Jiafeng Zhang +6 more
semanticscholar +1 more source
Assisted Circulation: A Progress Report
Hospital Practice, 1971Temporary circulatory assist devices now appear to hold more promise of clinical application than permanent, implanted artificial hearts. Two contrasting approaches to temporary assist are described: the bypass and the counterpulsation pump. The latter has developed into a completely external system through which coronary filling is enhanced and blood ...
William C. Birtwell, Harry S. Soroff
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Assisted Circulation Controlled by Electronic Computation
IEEE Transactions on Biomedical Engineering, 1965Electronic digital and analog computer techniques have recently been utilized in a unique mathematical model design approach for a myocardial augmentation system. This system incorporates solid-state circuitry in a special purpose computer design for conversion of physiological input data to pump actuator commands which precisely withdraw arterial ...
M. G. Chesnut +2 more
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Annals of Cardiothoracic Surgery, 2012
Spinal cord ischemia in thoracoabdominal aortic surgery is caused by the imbalance of oxygen demand and oxygen delivery produced by aortic occlusion. Ischemia and reperfusion initiate neurochemical cellular responses that can exacerbate ischemia, which ...
C. Acher, M. Wynn
semanticscholar +1 more source
Spinal cord ischemia in thoracoabdominal aortic surgery is caused by the imbalance of oxygen demand and oxygen delivery produced by aortic occlusion. Ischemia and reperfusion initiate neurochemical cellular responses that can exacerbate ischemia, which ...
C. Acher, M. Wynn
semanticscholar +1 more source
Assisted Circulation in Cardiac and Respiratory Insufficiency
Artificial Organs, 1983Summary: Intra‐aortic counterpulsation with a balloon pump (IABP) was used in 63 patients with cardiogenic shock, heart failure after surgery with artificial circulation, internal lacerations of the myocardium, or unstable angina. It was found that the IABP was most efficient in conditions related to myocardial ischemia. Use of arteriovenous perfusion
Shumakov Vi +2 more
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A Miniaturized Centrifugal Pump for Assist Circulation
Artificial Organs, 1994Abstract: The newly developed Nikkiso HMS–15 is a miniaturized centrifugal pump. It has an impeller diameter of only 50 mm and a priming volume of only 25 ml. A totally new approach was applied to develop this very small pump. The new pump showed comparable hemolysis with pumps twice as big (e.
Shiaki Kawada +4 more
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Future Directions in Assisted Circulation
1995Prediction of the future is always a hazardous undertaking and brings to mind a remark attributed to the thirteenth-century Castilian king, Alfonso X, when the Ptolemaic astronomical concepts had been explained: “If the Lord Almighty had consulted me, I should have recommended something simpler!”
R. S. Litwak, R. M. Koffsky
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