Results 301 to 310 of about 343,994 (332)

Assisted Circulation in Cardiac and Respiratory Insufficiency

Artificial Organs, 1983
Summary: 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, Tolpekin Ve, Averiy A. Pisarevskii   +2 more
openaire   +3 more sources

Rotor Pumps for Artificial and Assisted Circulation

Biomedical Engineering, 2011
The history of development of rotor pumps for artificial and assisted circulation is discussed in this work. Advantages of rotor pumps over pulsating pumps in implanted systems are considered: minimal size, energy consumption, and cost. Major directions in the development of rotor pumps include bearing elements, which determine pump service life. Axial
G. P. Itkin, S. V. Selishchev
openaire   +3 more sources

Future Directions in Assisted Circulation

1995
Prediction 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
openaire   +2 more sources

A Miniaturized Centrifugal Pump for Assist Circulation

Artificial Organs, 1994
Abstract: 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, Ryohei Yozu, Atsuo Mori, Shinichi Taguchi, Takeshi Aizawa   +4 more
openaire   +3 more sources

The State of Assisted Circulation in the USSR [PDF]

, 1979
Research on the artificial heart in the USSR is progressing along two lines: (1) the creation of a cardiac assist device (CAD) to serve as a partial replacement of the heart’s function or that of one of its ventricles and (2) the development of an orthotopic prosthesis for the heart (TAH).
openaire   +1 more source

Studies on mechanical assistance to the failing circulation

The American Journal of Surgery, 1970
Abstract Our experience with various experimental approaches to mechanically assist the failing circulation is presented. Particular emphasis is placed on the potential value of left heart bypass. A new pulsatile athrombogenic pump which does not require heparin is described.
openaire   +3 more sources

Assisted Circulation in Treatment of Experimental Heart Failure

Archives of Surgery, 1965
WITH THE development of low-priming volume oxygenators, assisted circulation has become available for emergency use. It has been suggested as treatment for a number of conditions including septicemic shock, 1 cardiac arrest, 2,3 pulmonary insufficiency, 4 and congestive heart failure.
Sidney H. Wong, Paul R. Ellis, Guy Prator, John W. Hyland, Chul Lee, Victor C. Del Rosario   +5 more
openaire   +3 more sources

Ventricular assist devices for the failing univentricular circulation

Expert Review of Medical Devices, 2017
Improved survival following single ventricle palliation has led to a large population of patients with a univentricular circulation, many of whom develop heart failure. Increasing experience with ventricular assist devices (VAD) in children has paved the way for VAD support in those with failing univentricular circulation.
William Y. Shi, William Y. Shi, Igor E. Konstantinov, Igor E. Konstantinov, Xin Tao Ye, Xin Tao Ye, Edward Buratto   +6 more
openaire   +3 more sources

Horizons in Assisted Circulation III

1989
In 1985, the Working Group on Mechanical Circulatory Support of the National Heart, Lung, and Blood Institute (NHLBI) reconfirmed that cardiac transplantation, or a potential mechanical analog, continues to be the most effective procedure for treating end-stage heart disease.
openaire   +2 more sources

Effect of the assisted circulation on myocardial ultrastructure

Bulletin of Experimental Biology and Medicine, 1976
The effect of a method of assisted circulation (counterpulsation) on the ultrastructure of the myocardium was studied in dogs. Electron microscopy revealed a sharp increase in the glycogen content in the heart muscle cells, mitochondria with a highly osmophilic, finely granular matrix, and high pinocytotic activity of the capillary endothelial cells ...
V. E. Tolpekin, V. I. Shumakov, N. N. Kleimenova   +2 more
openaire   +2 more sources