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30,000 people a year wake during surgery
Topic Started: Mar 12 2008, 11:35 PM (173 Views)
Mystical
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30,000 people a year wake during surgery
New monitors no help for patients 'entombed in a corpse,' study says

updated 5:00 p.m. ET, Wed., March. 12, 2008
Patients say it feels like being trapped in a corpse: They awake during surgery, unable to move or scream. Some remember hearing their surgeons talk, and a few recall feeling intense pain.

Some experts have said special brain-wave monitors were the best way to prevent anesthesia awareness. Now, in a big setback for efforts to prevent it, the first large, independent test of the monitors shows they are no better than older technology.

Researchers at Washington University School of Medicine in St. Louis compared two groups of about 1,000 patients each, all deemed at high risk of waking up during surgery because of health conditions, medication or other factors.



One group used the leading brain-monitoring system, which uses electrodes on the forehead to measure brain waves and software to calculate likelihood of consciousness. The other used an older device that analyzes exhaled anesthetic gas.

Anesthesiologists watched for movement and changes in vital signs and followed protocols to maintain patients’ depth of sleep, adjusting anesthesia levels as needed. Patients were interviewed after their surgeries about what they remembered.

Two people in each group had experienced awareness — and the two monitored with the newer system reported having felt pain as well.

Lead researcher Dr. Michael Avidan said that in two of those cases — one with each system —the monitors indicated no problems with the anesthesia. In the other two cases, the monitors signaled problems.

The study analyzed groups of people who had surgery at the university’s partner hospital, Barnes-Jewish in St. Louis, in 2005 and 2006.

1 or 2 in every 1,000 surgery patients wake
Anesthesia awareness occurs in 1 or 2 of every 1,000 surgical patients — possibly more often in children — and is thought to happen to roughly 30,000 Americans each year.

Some just have fleeting memories of things they heard, but others describe “white-hot pain” and terror, triggering long-term emotional problems.

Carol Weihrer of Reston, Va., said that 11 years after awakening during surgery to remove a diseased eye that caused severe pain, she still has post-traumatic stress disorder, can sleep for just short periods and suffers mood swings and panic attacks.

Weihrer, who founded the group Anesthesia Awareness Campaign Inc., said she heard the doctor give instructions: “Cut deeper, pull harder.” “I actually saw them cut the optic nerve when everything went black,” she said.


“While you’re laying there on the table,” she recalled, “you are thinking, praying, cursing, plotting, pleading, trying to crawl off the gurney, trying to kick, scream, move any part of your body to let them know you’re awake. In effect, you are entombed in a corpse.”

Kathy LaBrie of Nashua, N.H., also suffered awareness during surgery for a deviated septum. She said she heard “the sound of pushing and grinding and the surgeon talking to the nurses about the kind of car he had. ... I tried moving my arms and legs — I couldn’t do anything. I thought I was dying.”

Dr. Jeffrey Apfelbaum, president of the American Society of Anesthesiologists, who was not involved in the study, said there is “tremendous pressure” from industry and patient advocates to use the brain-wave technology, despite the lack of solid evidence that it works better.

The position of the anesthesiologists group has been that brain-wave monitoring should not be done routinely, but may be helpful for certain patients at high risk of awareness. But widespread use would be very costly.

The dominant maker of brain-wave systems, Aspect Medical Systems, says its monitor, called a bispectral index or BIS, is used in about 17 percent of the roughly 20 million U.S. surgeries each year in which anesthesia gas is used.

The device can cost as little as $5,000. But the researchers estimated that if it were used on all U.S. patients getting general anesthesia, the disposable electrodes alone would cost more than $360 million a year.

The device, on sale since 1998, “can prevent both too little anesthesia, which could cause awareness, and too much anesthesia, which could cause prolonged recovery and anesthetic side effects” such as grogginess and nausea, said Aspect’s medical director, Boston anesthesiologist Dr. Scott Kelley.

He said the new results show the system can help anesthesiologists “achieve a very low incidence of awareness in high-risk patients.”

Doctor's protocol may be key
But Avidan’s fellow researcher, anesthesiology professor Dr. Alex Evers, said he thinks having doctors closely follow a protocol to maintain the patients’ depth of sleep was the key to reducing anesthesia awareness in both groups.

The Food and Drug Administration has stated only that the BIS device “may be associated” with reducing awareness during surgery.

About 10 percent of U.S. surgical patients receive intravenous anesthesia, without any gas. The study findings do not apply to them.

Dr. Douglas Jackson, assistant anesthesiology professor at University of Medicine and Dentistry of New Jersey in Newark, said the study shows the BIS system “is not a magic bullet.”

“We still don’t have a monitor that can tell us about depth of anesthesia (and) awareness,” he said, adding that controlling that is still an art.

http://www.msnbc.com/23597612/wid/11915773?GT=1=31036
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Mystical
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This is a really scary thing when you think about it! :swoon: I've talked to people at work about this after an incident where one of the patients said they were awake the whole time. We had laughed it off at the time thinking it impossible, unless a person is put under what it called a "Twilight" which is no more than a surgery where the person is at very high risk to put under regular sedation so they put them under for only 15 -30 minutes where they are aware but can't feel anything and won't remember the surgery upon wakening
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Isis
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The Goddess of Darkness & Desire

Make that 30,000 and one...I woke when they did mine and the doctor freaked cause i looked up and said .."Hello"' "tutwave"
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Isis, The Goddess of Desire & Darkness. In The Darkness, We Find The Light.

This is a Drama Free Zone..!
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ravenheart_05
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I hope he wasn't holding a scalpel when you did that!!! :swoon:
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Mystical
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:lmao: @ravenheart. Isis I've seen this happen a few times but sometimes you really can't tell if the person is reacting to the sedation or they are really awake. It's a trial and error thing. I know your all thinking "Whaaat? Trial and error this is my body your talkin about" but really the anestesiologists really try to do their best but the human body is a very complex machine. Not one is the same therefore sedation is tricky.
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