scholarly journals Intra-Aortic Balloon Pump for Patients with Cardiac Conditions: An Update on Available Techniques and Clinical Applications

Reports ◽  
2019 ◽  
Vol 2 (3) ◽  
pp. 19 ◽  
Author(s):  
Limbert ◽  
Amiri

In this paper, we present a review of the intra-aortic balloon pump, as well as the usage of it in the medical field today. An intra-aortic balloon pump (IABP) is a biomedical device that can assist the heart during unstable angina or after a heart attack. This pump is typically used in patients who suffer from ischemia of the heart tissue, due to an unbalanced level of myocardial oxygen supply or demand. Through counterpulsation, which is a technique to synchronize the external pumping of blood with the heart’s cycle, the device can balance the supply and demand of blood that is necessary for the heart to pump properly. The IABP is comprised of the following four components: a polyurethane balloon, a polyethylene or fiber-optic catheter, a transducer, and the intra-aortic balloon pump console. In the past, researchers have used other materials that have low biocompatibility and can cause complications within the body. This analysis will explain the complications and state changes that occurred due to them. Limitations of past designs and advantages of current designs will be acknowledged, for they can be used by researchers to enhance designs for the future. Consequently, the analysis of this device may lead to improved designs and treatment in the future for patients with cardiac conditions.

2013 ◽  
Vol 1570 ◽  
Author(s):  
Jeffrey S. Bates ◽  
Seung Hei Cho ◽  
Prashant Tathireddy ◽  
Loren W. Rieth ◽  
Jules J. Magda

ABSTRACTHydrogels are considered smart materials because they respond to environmental stimuli. Sensors that monitor the body’s pH levels would be helpful for doctors to determine the severity of a patient’s condition, especially if they exhibit signs of shock. The motivation of this project is to create a biomedical device that can be worn sublingually or implanted into the body to help doctors with diagnosing a patient’s condition. The magnitude of the swelling/deswelling behavior can be measured by placing a sample of the hydrogel in a piezoresistive sensor. The degree of swelling/deswelling is directly proportional to the change in pH of the aqueous solution it is placed in. In this study, a variety of compositions of pH responsive hydrogels were designed and tested to determine the response time and magnitude for use in both macro and micro sensor arrays. This pressure sensor has been designed for use with thinner gels than have been used in the past. The results for swelling time and magnitude were compared to determine the effect of the thickness of the hydrogel samples on the swelling/deswelling kinetics of the material in order to find the appropriate composition, thickness and device that will yield the desired response rate and sensitivity.


Author(s):  
Bonnie G. Smith

Time or temporality is a concept by which humans confront the experience of duration. Feminists across the globe have constructed theories, political programs, and fantasies based on an awareness of temporality, usually as a tool to confront long-standing myths, inequality, and oppression. Feminist history is especially concerned with temporality, but so are activists who invoke the conditions of women in the past and present that must be remedied in the future. Temporality is embedded in discourses of the body and sexuality, and in this respect, women are seen as especially time bound. Postmodern theory has provided feminism with new approaches to time—many of them seeking to confound what can be called ordinary restrictions on time and to overturn time’s seeming limitations. Nonetheless, temporality exists only in language that is already gendered, seeming to set limits to a revolt against time.


Author(s):  
Bruce R. Burningham

The past two decades have seen an explosion in Cervantes scholarship. Indeed, it would perhaps not be an exaggeration to suggest that the last twenty years arguably represent the Golden Age of Cervantes criticism: slightly more than half of scholarly works written since 1888 have been published during the last two decades. In other words, during the last twenty years, the body of Cervantes knowledge has more than doubled, greatly expanding our variety of critical perspectives along the way. This chapter discusses the ‘across the centuries’ trend resulting from the various anniversary celebrations related to Cervantes, the ‘Cervantes and the Americas’ collections, Cervantes’s treatment of Islam, and the modernity of the novel, among other trends that have expanded Cervantine criticism since the turn of the current century.


Leonardo ◽  
2000 ◽  
Vol 33 (3) ◽  
pp. 237-238
Author(s):  
Richard Kade

Leonardo was a man who designed war engines. He also anatomized, stripped The flesh from the body And saw the soul; made perspective From a flat sheet flex Round as a moving limb. Transmuted the past to the future In a credible flying device. He inspired a journal's creation over four centuries later; A journal of fine art that grips The same universe as Leonardo And fills it with vigor. That covers the whole field of inquiry made possible with Modern scientific techniques. The art is new. The journal is Leonardo. Subscription is a solid chunk of man's future.


1941 ◽  
Vol 1 (S1) ◽  
pp. 110-111 ◽  
Author(s):  
S. B. Clough

Economics, as it is frequently taught nowadays, consists largely of supply and demand curves. Within their graceful lines are contained the wisdom of the ages—the key to the past and the barometer of the future. If superimposed on one another, these curves have all the esthetic quality of dynamistic drawings. So completely have they dominated economic thinking that when a group of economists considered the possibility of founding an Economic History Association, their first impulse was to establish a demand curve. This was done, as Professor Heaton has intimated, by Miss Anne Bezanson, who canvassed the field. She discovered that four hundred people could be counted upon immediately to support a Journal of Economic History.


2019 ◽  
Vol 7 (13) ◽  
pp. 55-66
Author(s):  
Daniel Pérez-Pamies ◽  
Marta Lopera-Mármol

This article uses a comparative and hermeneutical analysis to explore the similarities and differences between the cinematographic work of Billy Wilder,in particular, Sunset Blvd. (1950), and David Lynch and the well-known television series Twin Peaks (David Lynch & Mark Frost, CBS, 1990-1991), as well as itswidely-expected continuation: Twin Peaks: The Return (David Lynch & Mark Frost, Showtime, 2017), paying special attention to the representation of the corpse both in narrative and historical terms. The hypothesis of the authors is that the figuration of the dead contains and symbolizes a specific model of representation at the same time as it anticipates the appearance of a new one. In conclusion, the body in suspension, located in the gap between life and death, functions as a hinge between the past and the future.


Rhizomata ◽  
2021 ◽  
Vol 9 (2) ◽  
pp. 247-270
Author(s):  
Lenka Karfíková

Abstract The article treats the role of attention (intentio or attentio) in Augustine’s analysis of sense perception, the notion of time, and the Trinitarian structure of the human mind. The term intentio covers a broad range of meanings in Augustine’s usage. Its most fundamental meaning is the life-giving presence of the soul in the body, intensified in attention’s being concentrated on a particular thing or experience; Augustine also uses the term attentio in this latter sense. According to his analysis of time, by way of attention (intentio or attentio), the soul fixes the present in which the future passes into the past. Due to the intention of the soul, the form abstracted from an external object is both imprinted into the sense organ and retained in the memory in order to be, by intention again, recalled before the sight of mind. As “the intention of the will” or just “the will”, attention connects intellectual understanding with memory. In Augustine’s eyes, attention has a different quality depending on the object it is oriented to, and a different intensity, ranging from inattentive distraction (distentio) to concentrated effort (intentio).


Author(s):  
Suzanne Raitt

For Sinclair, the past was a wound. She feared being unable to escape it, and she feared in turn her own persistence in a form that she could not control. Mystic ecstasy – what she called the “new mysticism” – was a way of entering a timeless realm in which there was no longer any past to damage her. But she was also fascinated by what could never be left behind – hence her interest in heredity, the unconscious, and the supernatural. However, the immanence of the future can also emancipate us from the past, in Sinclair’s view, and this is the key to why mystical experience was so immensely appealing to her. Mystical experience could take the self out of the body and thus out of past traumas and into the future. False dying – like that which creates ghosts – traps the psyche in its own pain and forces it to re-experience the suffering of its life; real dying – mystical dying – involves forgetting the self and the world.


Maska ◽  
2020 ◽  
Vol 35 (200) ◽  
pp. 74-83
Author(s):  
Ida Hiršenfelder

The archive is a time machine that actively creates ways of accessing individual or collective experiences. Digital archives, in particular, such as the Web Museum anticipate an open and free access to memories even though they are not merely a representation of events but a field in which we can surpass the informativity of events in order to strengthen our experience of the (unlived) past and also the future. We are not building it to remember or understand the past but to think the future. The archive should be guided by the logic of distribution not the logic of accumulation.


Author(s):  
Matthew Scott Scarano ◽  
Jennifer Ann Krause

House of Leaves, by Mark Z. Danielewski, is a novel first published in 2000 that has since developed notoriety in literary circles for its arguably unique experimentation with a multi-layered plot, varied visual typography, and multi-media format. Despite being widely read and influential over the past decade, little scholarly analysis has been done on House of Leaves. As House of Leaves could represent an entire new genre of literature, it is important that we understand its themes and the ways in which various writerly techniques function within the novel. In this paper, I analyze House of Leaves through an existential lens, specifically utilizing the ideas of Jean-Paul Sartre and Albert Camus to examine the psyche of one of the novel’s main characters, Johnny Truant. In addition to primary sources by Danielewski, Sartre and Camus, I employ a 2002 analysis of House of Leaves by Katherine N. Hayles to aid my research. I conclude that Johnny’s story, and House of Leaves as a whole, breaks down traditional notions of reality, but retains existential hope for individuals who are able to find a purpose in life, even if that “purpose” is necessarily subjective. My analysis presents an original take on House of Leaves, and contains wider implications for future novels that emulate its experimental style. Past analyses have focused on post-modern aspects of House of Leaves, but I analyze it through an existential lens. Beyond adding to the body of work on House of Leaves, my existential take on an otherwise post-modern text may prove influential to analyses of other “post-modern” novels in the future.


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