Anesthesia : The Gift of Oblivion and the Mystery of Consciousness
by Cole-Adams, Kate







Into the blue1(18)
GOING UNDER
Awake
19(21)
Denial
40(19)
Paralysis
59(10)
Two hearts
69(16)
THE COLD BOSOM OF THE OCEAN
Questions without answers
85(18)
Things you don't know you know
103(19)
Weird science
122(11)
Moonless nights
133(9)
Lost days
142(7)
The most famous anesthesiologist in the world
149(22)
ADRIFT
The island
171(11)
Dreams
182(18)
Altered states
200(11)
Ghost stories
211(14)
SMALL BRIGHT FISH
General amnesia
225(9)
A working hypothesis
234(11)
The memory keepers
245(14)
The perfect anesthetic
259(14)
MERGING CURRENTS
Coming apart
273(12)
The hypnotist
285(5)
Regression
290(9)
SURFACING
Pulsations and palpitations
299(12)
The shallows
311(10)
Blood and blushing
321(8)
Ballast
329(13)
That younger me
342(8)
Sky
350(5)
Letting go
355(8)
Wings
363(4)
Acknowledgments367(4)
Notes371(16)
Sources387(13)
Index400


The author of Walking to the Moon examines what happens to the unconscious mind while under the effects of anesthesia, tracing her own experiences with surgery and the accounts of people who have reported trauma, waking mid-surgery, dreams, hallucinations and submerged memories while under anesthesia. $15,000 ad/promo.





KATE COLE-ADAMS is a journalist and novelist. Her debut novel, Walking to the Moon, was published in 2008. She lives in Melbourne with her family.





"The disappearing act." That's how Cole-Adams, an Australian author fretful over forthcoming spinal surgery for scoliosis, portrays general anesthesia. A significant portion of her book explores the terrifying topic of anesthesia awareness (one or two patients in a thousand describe waking up while under anesthesia). Current anesthetic concoctions consist of three main ingredients: a hypnotic agent that induces and maintains unconsciousness, a neuromuscular paralytic compound to prevent the body from moving, and analgesics to block pain. Cole-Adams blends bits of pharmacology, neurology, philosophy, and ethics with interviews of patients, researchers, and anesthesiologists in her examination of the subject, but she is left with big, baffling questions about the nature of consciousness and memory. And what about the possibility that general anesthesia might somehow permanently change who we are? It's tantalizing (and scary) to imagine what exactly happens to us when we are chemically put to sleep. What's our mind up to while we're under; is it hibernating or unleashed? Readers may find some stretches of Anesthesia numbing, but there is sufficient science and mystery to keep them entranced. Copyright 2017 Booklist Reviews.





Melbourne-based journalist and novelist Cole-Adams (Walking to the Moon, 2008) blends research, reflection, and memoir to try to grapple with the meaning of consciousness.When someone is anesthetized for an operation, they are usually told that they will be "going to sleep." What actually happens is much more complex, and not even anesthesiologists can agree on or fully explain what happens under anesthesia. In her first work of nonfiction, the author seeks to uncover some of the ethical implications of this procedure, such as the potential impact of words by doctors when a patient is unconscious or how to deal with the small but still troubling percentage of patients who wake up in pain during surgery, unable to communicate. She depicts her interactions with some of the foremost researchers working to understand these and other questions—e.g., why patients remember things that happened under anesthesia only when hypnotized and how an anesthesiologist can actually tell if a patient is awake. While Cole-Adams has amassed a lot of useful information and telling anecdotes, her purpose is not to simply narrate a history of anesthesia or to describe with scientific detail what happens to the brain when anesthetized. Incorporating dream accounts and bits of memoir, weaving in and out of her own and others' stories, and sharing her own limitations of understanding, the author uses a collagelike structure that seems to mimic the amorphous nature of the mind as someone drifts into unconsciousness under anesthesia. As Cole-Adams writes, "part of the difficulty in talking about anesthesia—not how to do it, but what it actually does—is that any discussion veers almost immediately into the mystery of consciousness." While the author raises more questions than she answers, and some readers may be put off by her less-that-straightforward style, these are thought-provoking questions, and Cole-Adams presents a lyrical journey through the vital question of what it means to be human. Copyright Kirkus 2017 Kirkus/BPI Communications. All rights reserved.





Introduction: Into the Blue

I am in a smallish, whitish room in a hospital in Brisbane. It is night. On the wall opposite my bed I can dimly make out a crucifix with its limp passenger. Beneath it float wide blank windows through which I watch the synapses of city light: a web of tiny illuminations and extinctions that seem, when I loosen my gaze, almost to form patterns; as if they are about to make sense. I am surprised at how calm I feel.

In the weeks leading up to this moment I have set my affairs in order, of sorts. Made a will, written letters for the children, waxed my legs. Said my farewells at the airport and boarded the flight from Melbourne with my mother. July 2010.

Some months before this, after decades of resistance, I gave in at last to the inevitability of major surgery. My capitulation was sudden and took place in a different wing of this same hospital, where I had come to consult a respected spinal surgeon. The surgeon had a quiet, almost diffident, manner and a moustache that put me in mind of a doleful Groucho. I am not sure what made my mind up, the moustache or the way his finger traced my wayward spine quite gently on the X-ray before him. But just as he began to tell me that I would not be a candidate for the type of non-invasive surgery we had been talking about, I realised with a small thud of certainty that, not only was I going to have this surgery-invasive though it might be-I was going to come back to Brisbane and he was going to do it.

In the aftermath of my decision, I was buoyed in a backwash of something like relief; a giving up of hope and its attendant efforts, a yielding to forces beyond my will. But when I lay awake at night, disquiet rose around me. It was not just the surgery that was worrying me-the cutting and drilling, the inevitable risk-it was that in some blank corner of myself I felt that I would not wake up afterwards. I knew logically, and during the day could convince myself, that for an otherwise healthy forty-eight-year-old, the likelihood of calamity was low. But at night, there in my bed in Melbourne, the conviction multiplied inside me that even if everything went according to plan, the me who woke after surgery would not be the same in some essential way as the me who had been wheeled into the operating theatre beforehand. I developed a dread of the moment when the anesthetic drugs would take effect and I would cease to be. I pictured myself in a stark, poorly lit room with two doors, one in, one out, neither of which I could open from within. Otherwise the room was empty. No windows, no furniture. In this darkness-which I now realise had the same sinuous quality as the shadows beneath my childhood bed-I would be trapped alone. Perhaps forever. At least until such time as someone else chose to release, not me but some other, ostensibly similar, version of me who would slip soundlessly into the life that had once been mine.

Shortly after making my decision I rang a separate Brisbane medical practice. I asked to speak to the doctor whose job it would be to render me unconscious and keep me that way during the long operation. Halting, almost apologetic, I explained to the receptionist that I had spent some years researching the process known as anesthesia, and that I was now rather nervous about what was going to happen to me. 'I think I know too much,' I said.

'Oh dear,' said the receptionist. 'That's not good.'


*

This book explores perhaps the most brilliant and baffling gift of modern medicine: the disappearing act that enables doctors and dentists to carry out surgery and other procedures that would otherwise be impossibly, often fatally, painful.

anesthesia.

The term was appropriated from the Greek by New England physician and poet Oliver Wendell Holmes in 1846 to describe the effect of the drug ether following its first successful public demonstration in surgery. Anesthetise: to render insensible.

These days there are other sorts of anesthetics that can numb a tooth or a torso simply (or unsimply) by switching off the nerves in the relevant part of the body. But the most widespread and intriguing application of this curious craft is what is now known as general anesthesia. In general anesthesia it is not the nerve endings that are switched off, it is your brain-or at least parts of it. These, it seems, include the connections that somehow enable the operation of our sense of self, or (loosely) consciousness, as well as the parts of the brain responsible for processing messages from the nerves telling us that we are in pain: the neurological equivalent of shooting the messenger. Which is, of course, a good thing.

More than a good thing. I would not have boarded that plane for Brisbane had it been otherwise. And I don't assume my fears were greater than those of anyone else in my predicament. But it was also true that for the previous decade I had been deeply preoccupied with a question or series of questions, often nebulous and contradictory, that amounted to this: what really happens to us when we are anesthetized?

By this I mean not what happens to the pinging, crackling apparatus of our nerves and spinal cords and brains, but what happens to us-to the person who is me or the person who is you-as doctors go about the messy business of slicing and delving within us? And, fused somehow to this, another odd and stubborn question: can whatever happens (or doesn't happen) while we are under anesthesia continue to affect us in our waking lives? Can it change the way we feel or think or behave in the minutes, months and even years after surgery? Finally I wondered-a niggling, almost soundless irritation largely obscured by the first two questions-why did I care?



Not so long ago, if you were unlucky enough to need surgery and strong enough to withstand it, you would be tied down and cut open, usually conscious and probably screaming. Poppy. Hemlock. Hemp. Over the centuries healers tried every imaginable way of preventing or deadening pain: pressing on arteries, pinching nerves, soaking sponges in narcotic herbs for patients to breathe through. Some practitioners favoured a blow to the jaw; others rubbed stinging nettles on one part of the body to distract from another. Alcohol. Opium. Hypnosis. Prayer. Until the mid-1800s, surgery was almost always an agonising last resort. Most of today's routine operations were impossible, and even when they weren't, many patients chose death in preference. 'Suffering so great as I underwent cannot be expressed in words,' wrote one survivor. 'The particular pangs are now forgotten; but the blank whirlwind of emotion, the horror of great darkness and the sense of desertion by God and man...I can never forget.'

In the end a patient's best hope was often simply speed. A Napoleonic surgeon called Langeback claimed he could amputate a shoulder 'in the time it took to take a pinch of snuff'. The brutality of their trade made some surgeons wretched and others hard-hearted, but even amid the burgeoning humanism of the Enlightenment, pain was considered so integral to life that few could imagine surgery without it. 'To avoid pain, in surgical operations, is a chimera,' said the French surgeon Velpeau in 1839. 'Knife and pain, in operative surgery, are two words which never suggest themselves the one without the other...and it is necessary to admit the connection.'

Surgical anesthesia brought the gift of oblivion.

Yet 170-odd years after a Boston dentist named William Morton gave the first successful public demonstration-removing a lump from the jaw of twenty-year-old Gilbert Abbott-we still don't understand fully how anesthetics work. Each day specialist doctors known as anesthetists (or, in America, anesthesiologists) put tens of thousands of people like you and me into chemical comas to enable other doctors to enter and alter our insides. Then they bring us back again. It is mind-blowing. But quite how this daily extinction happens and un-happens remains uncertain. Researchers know that a general anesthetic acts on the central nervous system-reacting with the slick membranes of the nerve cells in the brain to hijack responses such as sight, touch and awareness. They have nominated areas and processes they know are important: the microscopic channels through which neurons blast their chemical relays; the electrical circuits that pulse and groove between different regions of the brain. But they still can't agree on just what it is that happens in those areas, or which of the things that happen matter the most, or why they sometimes happen differently with different anesthetics, or even on the manner-a sunset? an eclipse?-in which the human brain segues from conscious to not.

Nor, as it turns out, can anesthetists ultimately measure what it is they do.

For as long as doctors have been sending people under, they have been trying to fathom how deep they have sent them. In the early days, this meant relying on signals from the body; later, on calculations based on the blood concentration of the various gases used. More recently brain monitors have come on the market that translate the brain's electrical activity into a numeric scale-a de facto consciousness meter. For all that, however, doctors still have no way of knowing for sure how deeply an individual patient is anesthetized-or even if that person is unconscious at all.


*

I am not an anesthetist, or a surgeon, or even a doctor. I am, however, one of the hundreds of millions of humans alive today who have undergone a general anesthetic. It is an experience now so common as to be mundane. These days there are gases and vapours and chemical infusions. Drugs to knock you out, to wake you up, to make you lie still in between; drugs to take away pain. There are machines to measure your heart rate, blood pressure, oxygen level, brainwaves; machines to breathe for you when you cannot. anesthesia has become a remarkably safe endeavour: less an event than a short and unremarkable hiatus. The fact that this hiatus has been possible for fewer than two of the two thousand or so centuries of human history; the fact that only since then have we been able to routinely undergo such violent bodily assaults and survive; the fact that anesthetics themselves are potent and sometimes unpredictable drugs-all this seems to have been largely forgotten. An-es-thee-zha. Most of us can barely pronounce it. Yet it has allowed the body's defences to be breached in ways previously unimaginable except during warfare or other catastrophe. Through the use of powerful poisons, it has enabled entry into the secret cavities of the chest and the belly and the brain. It has freed surgeons to saw like carpenters through the bony fortress of the ribs. It has made it possible for a doctor to hold in her hand a steadily beating heart. It is a powerful gift. But what exactly is it?






Terms of Use   ©Copyright 2018 Follett School Solutions