For two decades, doctors have followed an ethically-established agreement about the appropriate use of artificial nutrition and hydration (ANH) for patients who are seriously ill or in a persistent vegetative state. Generally, patients or their surrogates have been able to accept or refuse ANH based upon considerations that guide most treatment decisions, i.e., potential benefits, risks, burden, religious and cultural beliefs. The Terri Schiavo case – which included very open, dramatic disagreements among family members over such considerations – publicly challenged long-held agreements about ANH and caused many to question its proper use.
In response to such challenges, researchers from the University of Pennsylvania’s Institute on Aging and Center for Bioethics, and the Philadelphia VA’s Center for Health Equity Research and Promotion review and clarify ethical principles regarding the use of ANH. According to the authors, the five ethical principles that should guide decisions about ANH are:
These recommendations are the result of a national conference held at the University of Pennsylvania in early 2005, and appear in the December 15th, 2005 issue of the New England Journal of Medicine.
“Re-examining the guiding principles of decisions to use ANH right now is essential.” asserts David Casarett, MA, MD, Assistant Professor of Geriatrics, University of Pennsylvania School of Medicine, and an investigator with the VA Center for Health Equity Research and Promotion. “It is not possible to prevent all disagreements about difficult decisions at the end of life. I guarantee that there will be another Schiavo case, or something very similar. But it is possible, and indeed it is essential, to clearly articulate the principles that should underlie decisions about ANH and to ensure that these principles guide decisions in clinical practice. Our paper was inspired by the Schiavo case,” says Casarett. “That case was the ethical equivalent of an airplane crash—a highly visible tragedy that spurs investigation, analysis, and hopefully improvements and safeguards to prevent a recurrence.”
Olivia Fermano | EurekAlert!
NIST scientists discover how to switch liver cancer cell growth from 2-D to 3-D structures
17.11.2017 | National Institute of Standards and Technology (NIST)
High speed video recording precisely measures blood cell velocity
15.11.2017 | ITMO University
The formation of stars in distant galaxies is still largely unexplored. For the first time, astron-omers at the University of Geneva have now been able to closely observe a star system six billion light-years away. In doing so, they are confirming earlier simulations made by the University of Zurich. One special effect is made possible by the multiple reflections of images that run through the cosmos like a snake.
Today, astronomers have a pretty accurate idea of how stars were formed in the recent cosmic past. But do these laws also apply to older galaxies? For around a...
Just because someone is smart and well-motivated doesn't mean he or she can learn the visual skills needed to excel at tasks like matching fingerprints, interpreting medical X-rays, keeping track of aircraft on radar displays or forensic face matching.
That is the implication of a new study which shows for the first time that there is a broad range of differences in people's visual ability and that these...
Computer Tomography (CT) is a standard procedure in hospitals, but so far, the technology has not been suitable for imaging extremely small objects. In PNAS, a team from the Technical University of Munich (TUM) describes a Nano-CT device that creates three-dimensional x-ray images at resolutions up to 100 nanometers. The first test application: Together with colleagues from the University of Kassel and Helmholtz-Zentrum Geesthacht the researchers analyzed the locomotory system of a velvet worm.
During a CT analysis, the object under investigation is x-rayed and a detector measures the respective amount of radiation absorbed from various angles....
The quantum world is fragile; error correction codes are needed to protect the information stored in a quantum object from the deteriorating effects of noise. Quantum physicists in Innsbruck have developed a protocol to pass quantum information between differently encoded building blocks of a future quantum computer, such as processors and memories. Scientists may use this protocol in the future to build a data bus for quantum computers. The researchers have published their work in the journal Nature Communications.
Future quantum computers will be able to solve problems where conventional computers fail today. We are still far away from any large-scale implementation,...
Pillared graphene would transfer heat better if the theoretical material had a few asymmetric junctions that caused wrinkles, according to Rice University...
15.11.2017 | Event News
15.11.2017 | Event News
30.10.2017 | Event News
17.11.2017 | Physics and Astronomy
17.11.2017 | Health and Medicine
17.11.2017 | Studies and Analyses