Search Results - "Butler, K C"

Are the gains from international portfolio diversification exaggerated? The influence of downside risk in bear markets by Butler, K.C, Joaquin, D.C

“…The fundamental rationale for international portfolio diversification is that it expands the opportunities for gains from portfolio diversification beyond…”
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Collected Nondimensional Performance of Rotary Dynamic Blood Pumps by Smith, W. A, Allaire, P, Antaki, J, Butler, K. C, Kerkhoffs, W, Kink, T, Loree, H, Reul, H

“…“Nonpulsatile” or “continuous flow” blood pumps are a relatively new application of the rotary dynamic blood pumping principle. They fall outside the normal…”
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Cardiac responses to electrical stimulation of discrete loci in canine atrial and ventricular ganglionated plexi by Butler, C K, Smith, F M, Cardinal, R, Murphy, D A, Hopkins, D A, Armour, J A

“…The purpose of the present study was to examine cardiac effects induced by electrical stimulation (1-4 V, 1 ms, 200 Hz) of discrete loci within the…”
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Activity of in vivo atrial and ventricular neurons in chronically decentralized canine hearts by Ardell, J L, Butler, C K, Smith, F M, Hopkins, D A, Armour, J A

“…The spontaneous activity of 175 neurons located in the ventral right atrial and ventral interventricular ganglionated plexi was recorded in eight anesthetized…”
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HeartMate II left ventricular assist system: from concept to first clinical use by Griffith, Bartley P, Kormos, Robert L, Borovetz, Harvey S, Litwak, Kenneth, Antaki, James F, Poirier, Victor L, Butler, Kenneth C

“…The HeartMate II left ventricular assist device (LVAD) (ThermoCardiosystems, Inc, Woburn, MA) has evolved from 1991 when a partnership was struck between the…”
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Fluid dynamic characterization of operating conditions for continuous flow blood pumps by Wu, Z J, Antaki, J F, Burgreen, G W, Butler, K C, Thomas, D C, Griffith, B P

“…As continuous flow pumps become more prominent as long-term ventricular assist devices, the wide range of conditions under which they must be operated has…”
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Cardiac effects induced by chemically activated neurons in canine intrathoracic ganglia by Butler, C K, Smith, F M, Nicholson, J, Armour, J A

“…Regional or global cardiac responses were elicited when various chemicals were injected into discrete loci within acutely decentralized stellate and middle…”
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Mechanisms of red blood cell trauma in assisted circulation. Rheologic similarities of red blood cell transformations due to natural aging and mechanical stress by Kameneva, M V, Antaki, J F, Borovetz, H S, Griffith, B P, Butler, K C, Yeleswarapu, K K, Watach, M J, Kormos, R L

“…Clinical experience with circulatory support devices has typically shown alteration of patient blood rheology exhibited through increasing blood viscosity and…”
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Chronic animal health assessment during axial ventricular assistance: importance of hemorheologic parameters by Kameneva, M V, Watach, M J, Litwak, P, Antaki, J F, Butler, K C, Thomas, D C, Taylor, L P, Borovetz, H S, Kormos, R L, Griffith, B P

“…Chronic testing of the Nimbus/UOP Axial Flow Pump was performed on 22 calves for periods of implantation ranging from 27 to 226 days (average, 74 days). The…”
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Development of an axial flow blood pump LVAS by Butler, K C, Maher, T R, Borovetz, H S, Kormos, R L, Antaki, J F, Kameneva, M, Griffith, B P, Zerbe, T, Schaffer, F D

“…Nimbus, Inc., (Rancho Cordova, CA) and the University of Pittsburgh (Pittsburgh, PA) are collaborating to develop an implantable rotary blood pump that can be…”
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Dynamic systemic vascular resistance in a sheep supported with a Nimbus AxiPump by Konishi, H, Antaki, J F, Boston, J R, Kerrigan, J P, Mandarino, W A, Yamazaki, K, Oe, M, Litwak, P, Borovetz, H S, Butler, K C

“…Changes in systemic vascular resistance (SVR) in response to diminished pulse perfusion were analyzed over a dynamic range of flow conditions. An axial flow…”
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Systolic pressure gradients between the wall of the left ventricle, the left ventricular chamber, and the aorta during positive inotropic states: implications for left ventricular efficiency by Butler, C K, Wong, A Y, Armour, J A

“…To study systolic pressure gradients developed between the left ventricular wall, its chamber, and the aortic root, in one group of dogs left ventricle ventral…”
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A sheep model for the study of hemorheology with assisted circulation. Effect of an axial flow blood pump by Kameneva, M V, Antaki, J F, Butler, K C, Watach, M J, Kormos, R L, Griffith, B P, Borovetz, H S

“…Hemorheologic investigations were performed on nine sheep during the in vivo evaluation of a new axial flow ventricular assist device, the Nimbus AxiPump…”
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Cardiac responses elicited by peptides administered to canine intrinsic cardiac neurons by Armour, J A, Yuan, B X, Butler, C K

“…In order to study the effects of peptides on intrinsic cardiac neurons, substance P, bradykinin, oxytocin, calcitonin gene related peptide, atrial natriuretic…”
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Development of the Nimbus/University of Pittsburgh innovative ventricular assist system by Butler, Kenneth C, Dow, Jerry J, Litwak, Philip, Kormos, Robert L, Borovetz, Harvey S

“…Background. Nimbus Inc, and the University of Pittsburgh’s McGowan Center for Artificial Organ Development have been collaborators on rotary blood pump…”
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In vivo evaluation of the Nimbus axial flow ventricular assist system. Criteria and methods by Antaki, J F, Butler, K C, Kormos, R L, Kawai, A, Konishi, H, Kerrigan, J P, Borovetz, H S, Maher, T R, Kameneva, M V, Griffith, B P

“…Continuing in vivo trials are being conducted at the University of Pittsburgh using the Nimbus axial flow blood pump (AxiPump). To date, 14 sheep experiments…”
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Continuing development of the Cleveland Clinic-Nimbus total artificial heart by Rintoul, T C, Butler, K C, Thomas, D C, Carriker, J W, Maher, T R, Kiraly, R J, Massiello, A, Himley, S C, Chen, J F, Fukamachi, K

“…A completely implanted total artificial heart (TAH) is under development by Nimbus, Inc., and the Cleveland Clinic Foundation (CCF). Key features of the system…”
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The Hemopump-a new cardiac prothesis device by Butler, K.C., Moise, J.C., Wampler, R.K.

“…A cardiac prothesis device called the Hemopump is currently undergoing clinical trials. This device is a radical new design for a temporary left ventricular…”
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Long-term animal survival with an implantable axial flow pump as a left ventricular assist device by Konishi, H, Antaki, J F, Litwak, P, Kameneva, M, Yamazaki, K, Macha, M, Kerrigan, J P, Mandarino, W A, Butler, K C, Borovetz, H S, Kormos, R L

“…We are developing an axial flow blood pump with Nimbus Inc. (AxiPump). For in vivo evaluation the AxiPump has been used as a left ventricular assist device…”
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Modification of supraventricular tachyarrhythmias by stimulating atrial neurons by Ali, I.M., Butler, C.K., Armour, J.A., Murphy, D.A.

“…The effects of stimulating the right atrial ventral ganglionated plexus on ventricular performance during atrial tachycardia was studied in 8 lightly sedated…”
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