For three years Louis Viljoen was in coma. Then a GP gave him a simple sleeping pill - and a miracle occurred. Now this drug could help change thousands of lives

By Julia Stuart

Published: 27 March 2007

There were times when Sienie Engelbrecht wondered whether her only child would be better off dead. Louis Viljoen had been in a persistent vegetative state since 1996, when he was hit by a lorry while cycling to work as a hospital switchboard operator. He was 25 and engaged to be married.

Sienie, a 58-year-old sales consultant, visited him every evening in a rehabilitation centre near his home in South Africa. She always talked to him, but he never responded. "For me it was a very heartfelt story because he was very sporty. He used to play soccer and was a very good swimmer. To see him lying like that in a coma not doing anything was terrible. I couldn't stand it. He couldn't talk, he didn't do anything. He was just looking at you all the time. I don't know whether he realised it was me. Sometimes I thought why didn't God take him away. It would have been better," says Sienie, who lives in Springs, about 40 miles from Johannesburg.

One day, in 1999, one of the ward sisters told Sienie that Louis had been restless and was pulling at his mattress. Sienie spoke to her GP, Dr Wally Nel, who suggested that she gave him one of the sleeping pills he had just prescribed for her. She duly crushed it, put it in a drink and gave it to him. She was astounded by what happened next.

"After about 20 minutes I heard Louis make a sound like 'mmm'. I thought, am I dreaming? He didn't make any sound usually. I looked at his eyes and they were sparkling. He turned his head to me and I said: 'Louis, can you hear me?' And then all of a sudden he said 'yes'. I couldn't believe it. I just cried. I said 'say hello to me' and then he said 'hello, Mummy' and started talking. I was so heartsore I couldn't talk."

After about two hours, Louis slipped back into a semi-conscious state. His mother gave him the drug for the following few nights and each time the reaction was the same. Convinced that Zolpidem was the cause, she told Dr Nel. He came to the rehabilitation centre and watched as Louis became fully conscious again about 20 minutes after taking the drug. It was the world's first reported case of a Zolpidem-induced awakening.

"There was definitely a tear in my eye," says the GP, who has worked at the same practice in Springs for 35 years. Dr Ralf Clauss, a nuclear medicine physician at the Royal Surrey County Hospital in the UK, who at the time was working in the Medical University of Southern Africa, performed a brain scan on Louis before and after taking Zolpidem. Before taking the sleeping tablet, about 30 per cent of his brain was in darkness, which is abnormal. After taking the drug, it lit up. "We were elated to see it and really surprised. At that point we didn't know what we were dealing with," says Dr Clauss.

Since then, another South African and an American, both classified as being in a permanently vegetative state, have also been roused to full consciousness by the drug. There have also been reports that about 10 to 15 patients in a minimally conscious state have been awakened. One of them can be seen coming out of her partial coma for the first time on My Shocking Story: Coma Miracle on the Discovery Channel on Thursday. Dianne Katz, 51, had been in a semi-conscious state since she had two brain aneurysms and three strokes two years ago. The book-keeper from Kenilworth, Johannesburg, couldn't talk, eat or wash unaided. She is seen coming round and talking shortly after taking the drug, while her family looks on in amazement.

But it is not only those with impaired consciousness who have been helped by the sleeping pill. Those brain damaged by trauma and strokes have also significantly improved. Dr Clauss says Zolpidem seems to help between 30 to 60 per cent of patients with less severe injury, such as a small stroke. For those with serious impairment of consciousness the figure is around 15 per cent. Dr Nel also has a small number of patients with spinal injuries, which have had some response. One quadriplegic patient is now able to hold his torso upright in his wheelchair. Some patients can talk again, hear and move their limbs.

One of his patients, Paul Ras, 70, who also lives in Springs, was in a head-on car accident in 1995. His jaw was broken, he suffered five broken ribs and a crushed pelvis. He spent three weeks in a coma. After the same hip was replaced twice, the runner, who was used to competing in 50km races, finally had it removed altogether in 1999. With one leg shorter than the other, he had to wear a built-up shoe and was told he would never be able to do sports again. That year he was prescribed Zolpidem for sleep problems. "When I woke up in the morning I was a different man," he says. "It's changed me completely. I can do my gardening myself. I've built a double garage all on my own. I carry my own bricks. People can't believe it with no hip."

The drug, which is also available in the UK, is still only under licence as a sleeping pill. "We are not experimenting," insists Dr Nel, 65. "We can give it to people as a sleeping tablet and then I follow it up on the clinical picture. At the end of the day my ear is red from people phoning me. We get so many queries because with a brain injury that was the end of the road. Nobody said that a brain could ever recover and now we say there is hope. It's a whole new world opening for brain injury."

It has taken eight years of research for Dr Clauss to reach his hypothesis of how Zolpidem affects brain injury. "The drug is a GABA agonist, which means in normal tissue it stimulates GABA receptors and normally they put you to sleep," he explains. "But in Louis's brain, for example, these GABA receptors are abnormal and overactive. They keep Louis's brain in a sleeping or dormant state all the time. The drug distorts these abnormal receptors which put Louis to sleep, dormancy is switched off and the brain returns back to normal."

So why does it help some patients and not others? "Some people have dormancy - inactive brain tissue which is functioning, but not functioning correctly, and others have dead tissue. It doesn't do anything to the dead tissue, but it reverses the dormant tissue, and the response depends on how big the dormancy part is."

The British firm ReGen Therapeutics is carrying out a trial on 20 patients in South Africa already on the drug. Percy Lomax, the firm's chairman, says: "Stroke is the third biggest cause of death in the United Kingdom. Around 450,000 people in the UK are currently suffering from some form of disability from a stroke. If we can reduce that disability that would seem to me to be an important step forward." It is not expected that Zolpidem will be licensed for use for brain injury for several years.

Meanwhile, Dianne Katz, who "woke" last November, can now walk on her own, talk and eat unaided. And Louis, now 36, is going from strength to strength. He is now fully conscious. "He still talks and has got such a good sense of humour and he remembers everything before the accident: his birthday, my birthday, where he went to school and work," says his mother. "I'm so glad, I can't describe it to anyone. Nobody could believe that a sleeping tablet would get someone out of his coma."

My Shocking Story: Coma Miracle is on Discovery Channel this Thursday at 9pm

Coma: the facts

* Coma is the most severe of impaired consciousness states. There is no reaction from the person and the eyes are closed.

* Vegetative state is like coma, except the eyes are open.

* The minimally conscious state is like the vegetative state, but there is some response.

* Causes of brain damage that can result in a coma or vegetative state are either traumatic, such as a blow to the head, or non-traumatic such as stroke, brain disease and severe infection of the nervous system such as rabies.

* Vegetative state occurs when the upper brain is damaged so the ability to think is lost while the lower part of the brain continues to function.

* A vegetative state often develops when a person comes out of a coma.

source Back from the dead: A cure for comas

Tuesday September 12, 2006
The Guardian

We have always been told there is no recovery from persistent vegetative state - doctors can only make a sufferer's last days as painless as possible. But is that really the truth? Across three continents, severely brain-damaged patients are awake and talking after taking ... a sleeping pill. And no one is more baffled than the GP who made the breakthrough. Steve Boggan witnesses these 'strange and wonderful' rebirths

For three years, Riaan Bolton has lain motionless, his eyes open but unseeing. After a devastating car crash doctors said he would never again see or speak or hear. Now his mother, Johanna, dissolves a pill in a little water on a teaspoon and forces it gently into his mouth. Within half an hour, as if a switch has been flicked in his brain, Riaan looks around his home in the South African town of Kimberley and says, "Hello." Shortly after his accident, Johanna had turned down the option of letting him die.

Three hundred miles away, Louis Viljoen, a young man who had once been cruelly described by a doctor as "a cabbage", greets me with a mischievous smile and a streetwise four-move handshake. Until he took the pill, he too was supposed to be in what doctors call a persistent vegetative state.

Across the Atlantic in the United States, George Melendez, who is also brain-damaged, has lain twitching and moaning as if in agony for years, causing his parents unbearable grief. He, too, is given this little tablet and again, it's as if a light comes on. His father asks him if he is, indeed, in pain. "No," George smiles, and his family burst into tears.

It all sounds miraculous, you might think. And in a way, it is. But this is not a miracle medication, the result of groundbreaking neurological research. Instead, these awakenings have come as the result of an accidental discovery by a dedicated - and bewildered - GP. They have all woken up, paradoxically, after being given a commonly used sleeping pill.

Across three continents, brain-damaged patients are reporting remarkable improvements after taking a pill that should make them fall asleep but that, instead, appears to be waking up cells in their brains that were thought to have been dead. In the next two months, trials on patients are expected to begin in South Africa aimed at finding out exactly what is going on inside their heads. Because, at the moment, the results are baffling doctors.

The remarkable story of this pill and its active ingredient, zolpidem, begins in 1994 when Louis Viljoen, a sporty 24-year-old switchboard operator, was hit by a truck while riding his bike in Springs, a small town 30 minutes' drive east of Johannesburg. He suffered severe brain injuries that left him in a deep coma. He was treated in various hospitals before being settled in the Ikaya Tinivorster rehabilitation centre nearby. Doctors expected him to die and told his mother, Sienie Engelbrecht, that he would never regain consciousness. "His eyes were open but there was nothing there," says Sienie, a sales rep. "I visited him every day for five years and we would speak to him but there was no recognition, no communication, nothing."

The hospital ward sister, Lucy Hughes, was periodically concerned that involuntary spasms in Louis's left arm, that resulted in him tearing at his mattress, might be a sign that deep inside he might be uncomfortable. In 1999, five years after Louis's accident, she suggested to Sienie that the family's GP, Dr Wally Nel, be asked to prescribe a sedative. Nel prescribed Stilnox, the brand name in South Africa for zolpidem. "I crushed it up and gave it to him in a bottle with a soft drink," Sienie recalls. "He couldn't swallow properly then, but I helped him and sat at his bedside. After about 25 minutes, I heard him making a sound like 'mmm'. He hadn't made a sound for five years.

"Then he turned his head in my direction. I said, 'Louis, can you hear me?' And he said, 'Yes.' I said, 'Say hello, Louis', and he said, 'Hello, mummy.' I couldn't believe it. I just cried and cried."

Hughes was called over and other staff members gathered in disbelief. "Sienie told me he was talking and I said he couldn't be - it wasn't possible," she recalls. "Then I heard him. His mother was speechless and so were we. It was a very emotional moment."

Louis has now been given Stilnox every day for seven years. Although the effects of the drug are supposed to wear off after about two and a quarter hours, and zolpidem's power as a sedative means it cannot simply be taken every time a patient slips out of consciousness, his improvement continues as if long-dormant pathways in his brain are coming back to life.

I see Louis before his daily medication, yet he is conscious where once he would have been comatose. Almost blind because of a separate and deteriorating condition, there is a droop to one side of his mouth and brow because of brain damage. His right arm is twisted awkwardly into his side.

Louis is given a pill, and I watch. It is 8.30am. After nine minutes the grey pallor disappears and his face flushes. He starts smiling and laughing. After 10 minutes he begins asking questions. His speech is impaired because of the brain damage and the need, several years ago, to remove all his teeth, but I can understand him. A couple of minutes later, his right arm becomes less contorted and the facial drooping lessens. After 15 minutes he reaches out to hug Sienie. He pulls off her wedding ring and asks what it is. "It's a suffer-ring," she jokes. And he says, "Well, if you're suffering, you should make a plan!" The banter continues and he remembers conversations from the previous day and adds to them.

"Louis," I ask, "do you feel any change in awareness before and after the pill?" "No," he says. "None whatsoever." Whatever is happening, he feels the same. "How do you know this is your mother?" I ask, referring to Sienie. Remember, Louis cannot see. He says: "Because I recognise her voice and I know she loves me."

Nel was as amazed at Louis' awakening as everyone else. A GP in Springs for 40 years, when he isn't seeing up to 100 patients a day, he spends his time restoring vintage cars. Married with three grown-up children, he has lived in the same house all his life.

"Something strange and wonderful is happening here, and we have to get to the bottom of it," he says. "Since Louis, I have treated more than 150 brain-damaged patients with zolpidem and have seen improvements in about 60% of them. It's remarkable."

After Louis' awakening was publicised in the South African media, Dr Ralf Clauss, a physician of nuclear medicine - the use of radioactive isotopes in diagnostic scans - at the Medical University of Southern Africa, contacted Nel to suggest carrying out a scan on Louis. "The results were so unbelievable that I got other colleagues to check my findings," says Clauss, who now works at the Royal Surrey County Hospital in Guildford. "We did scans before and after we gave Louis zolpidem. Areas that appeared black and dead beforehand began to light up with activity afterwards. I was dumbfounded - and I still am."

Clauss says immediate improvements in the left parietal lobe and the left lentiform nucleus were visible. In lay terms, these are important for motor function, sight, speech and hearing.

"I remember saying to Dr Nel that we were witnessing medical history," says Clauss.

No one yet knows exactly how a sleeping pill could wake up the seemingly dead brain cells, but Nel and Clauss have a hypothesis. After the brain has suffered severe trauma, a chemical known as Gaba (gamma amino butyric acid) closes down brain functions in order to conserve energy and help cells survive. However, in such a long-term dormant state, the receptors in the brain cells that respond to Gaba become hypersensitive, and as Gaba is a depressant, it causes a persistent vegetative state.

It is thought that during this process the receptors are in some way changed or deformed so that they respond to zolpidem differently from normal receptors, thus breaking the hold of Gaba. This could mean that instead of sending patients to sleep as usual, it makes dormant areas of the brain function again and some comatose patients wake up.

In Kimberley, the once booming home of the De Beers diamond empire, Riaan Bolton's family heard of Nel's work after he and Clauss had papers published in the medical journal NeuroRehabilitation and the New England Journal of Medicine several months ago. Riaan suffered severe brain trauma when he was thrown from a car in a traffic accident in July 2003. A keen cricketer and rugby player, the 23-year-old was studying to become an industrial engineer but still found time to play guitar in a band.

"One specialist said he had a 5% chance of recovering, another said he had no chance whatsoever of regaining consciousness," says his mother, Johanna. She and her husband, Tinus, spend about 1,000 a month on round-the-clock care for their son in a converted garage at their home, but until June they had seen no sign of awareness in him. Then they asked their doctor, Clive Holroyd, to contact Nel for advice.

"There was no movement, no recognition, just nothing," says Tinus. "Then we gave him the pill and we noticed him moving the fingers in his left hand and touching them against each other. His eyes went big and he began looking from left to right.

"The doctor started asking Riaan questions. He said, 'Look at me, Riaan' and Riaan looked straight at him and focused on his face. Then the doctor asked him to move his hand and he moved it. And then he lifted his head from the pillow and began looking around. I couldn't believe it."

I watch as Riaan is given his medication. As with Louis, his face flushes and his eyes begin to sparkle and focus within minutes. Gone is the 1,000-yard stare. He hugs his mother and looks at her face, but even though I am amazed, the family reckon this isn't his best day so far. They show me a number of DVDs they shot in July. In them, Riaan responds to questioning, nods and shakes his head, drinks through a straw, often laughs and says, 'Hello.' He remains severely brain damaged, but there is clear evidence of understanding and communication.

"It has given us hope," says Johanna. "To have communication with him again, to know he becomes aware of us and to tell him we love him - knowing he can hear us - is simply beyond belief. It has been a very moving experience."

Holroyd remains perplexed. "There is a measurement of the depths of coma called the Glasgow scale, with three being the worst and 15 being normal," he says. "Riaan was six, but within 10 minutes of taking the pill he is up to nine. It's simply unbelievable. And the mind-boggling thing about this is that it's done with a sleeping pill.

"Some time ago, Riaan had a cardiac arrest and it was a difficult call as to whether or not to resuscitate him. His mother insisted he should be, and look at him now. From now on, this will cause serious ethical issues over whether to let such coma victims die." Those issues became even more complicated last week, when a British woman believed to be in a persistent vegetative state astonished doctors by responding to their voices.

Although these awakenings are the most dramatic aspect of the zolpidem phenomenon, Percy Lomax, the chief executive of ReGen Therapeutics, the British company funding the South African trials, believes Nel's work with less brain-damaged patients could be the most significant. Many stroke victims, patients with head injuries and those whose brains have been deprived of oxygen, such as near-drowning cases, have reported significant improvement in speech, motor functions and concentration after taking the drug.

"The potential for this drug is enormous," says Lomax. "ReGen has applied for a patent to use the drug, now out of patent and generically available, for the treatment of secondary brain injury after brain trauma. The object of the clinical trial is to scientifically establish that the compound works in the way it has been shown to work in individual cases. It will be carried out on patients known to react well to zolpidem, and by lowering the dosage it is hoped that the sedative side-effects will be reduced but the brain stimulation will still continue.

"It may be that further research will allow us to better understand the way the drug works and to develop a new generation of better-targeted pharmaceuticals." He says market research estimates the potential market for zolpidem in brain-damaged patents could top $4.3bn (2.3bn).

The company that first developed zolpidem, Sanofi-Aventis, was contacted by Nel and Clauss but appears to have chosen not to become involved in the trials or the use of the drug on brain-damaged patients. Instead, the brain scans on up to 30 patients will be carried out at the Pretoria Academic Hospital by Professor Mike Sathekge, head of nuclear medicine, and Professor Ben Meyer, one of South Africa's most renowned physicians.

"The results so far could be potentially very important," says Meyer. "We have never before spoken of damaged cells in the brain going into hibernation - we have thought of them as necrotic, or dead, cells. But we know cells can go into hibernation in the heart and thyroid, so why not the brain? If there are hibernating cells in damaged brains, it may be that this drug helps to wake them in some people."

In South Africa, I meet a procession of brain-damaged patients who feel the drug has changed their lives for the better. There is 32-year-old Miss X, who can't be named for legal reasons. She suffered four cardiac arrests and hypoxia, a lack of oxygen to the brain, when a hospital's apparent failure to diagnose a gall bladder problem resulted in her contracting septicaemia four years ago. She can barely stand, her arms are in spasm, she cannot speak - although her intelligence has not been affected - and the left side of her face droops. She was given zolpidem for the first time just a week before I see her and her parents say the improvement was such that she has come back for more.

Miss X is given a pill by Nel at 4.37pm. By 4.50 the left side of her face is no longer drooping, her eyes sparkle and she smiles broadly. At 5.02, her arms have relaxed enough for her to fold them and she is laughing with her parents. Ten minutes later, she stands up, stretches to her full height and claps her hands.

Using a card keyboard, she spells out answers to questions I have for her. "Can you use the keyboard more quickly with the medication?" She answers: "Yes." Does she feel an improvement? "Yes, I am not falling over. I am not coughing so much. I can swallow easier. I feel my limbs are much more relaxed." But does she feel more tired? "No". What is she hoping for? "To talk again. I'd love to be able to call my cats to come to me."

At 5.22pm, Miss X issues a long, drawn-out "Wall-eeee!" and hugs Nel.

Then there is Wynand Claasens, 22, who suffered severe brain damage five years ago when he was assaulted outside his school. A series of subsequent strokes left him wheelchair-bound, depressed and aggressive. He used to be a long-distance runner. Nel gave him Stilnox for the first time in early July this year. "I was struggling to walk, my left eye was hanging lower and was smaller than my right eye, I was feeling very angry, I had pains in my knees and I was having trouble going to the toilet," Wynand says. "Now I'm walking with one stick, my face has evened up, I can go to the toilet when I'm ready and the pain in my knees has gone. I take one 10mg tablet each night and I feel about 60% better."

The list goes on. Heidi Greven, who is now 21, was starved of oxygen to her brain at birth. Her mother, Babs, says she used to sit in silence, locked inside her own head, never communicating and looking terribly unhappy. When I meet Heidi, she is walking around, curious about everything. She examines the shorthand in my notebook. Although too shy to speak (she will always be brain damaged), she jokes with Nel. At home, she now chats with her parents.

"I'll never forget the first time she was given the medication," says Babs. "It was in July 2002. After 10 to 15 minutes it was like a curtain being lifted from her eyes. I couldn't believe it. She suddenly started looking around and fiddling with magazines. Then she went outside the door and looked into the other rooms in the surgery. She found a portable radio and put it up to her shoulder and began listening to it. Beforehand, she would just sit there doing nothing.

"That was a Saturday. When she went to [a special] school on the Monday, her teacher sent a note home asking what we had done to make Heidi come alive."

There are others, too: Paul Ras, a 69-year-old runner who suffered brain damage after a traffic accident. Now he is convinced zolpidem is responsible for a recovery that allows him to run races up to 50km - with only one hip.

And Theo van Rensburg, a 43-year-old lawyer who suffered severe brain injuries in a car crash in 1991. He also suffered a stroke while in a coma for three months. He took Stilnox in 1999 and reported an improvement in balance, co-ordination, speech and hearing.

"I go horse-riding now," he says. He still has difficulty speaking, but I can understand him. "It's really good for my balance."

Finally, I meet 22-year-old Janli de Koch, whose eyesight was damaged in a car accident in Switzerland in December 2004. The injury resulted in a restriction of her visual field to two corners of her eyes; she cannot see below a certain point, so that she bumps into things and falls over. Last month, she was prescribed zolpidem and now says she can already see more than she used to. She hopes the improvements will continue.

In 1969 the neurologist Dr Oliver Sacks used the then new drug L-Dopa to awaken a group of catatonic patients who had survived the 1917-1928 epidemic of the mysterious "sleeping disease", known as encephalitis lethargica. The 1990 film Awakenings chronicles Sacks' delight at his patients' progress and his despair when the medication stops working and they slip back into a catatonic state. The hope with zolpidem is that the improvements will continue and there will be no regression. In the patients who have used the medication longest - such as Louis Viljoen and Theo van Rensburg - the signs are that progress continues. But time will tell.

Perhaps the last word should go to Pat Flores, the mother of George Melendez, the 31-year-old coma patient who reassured his parents that he wasn't in pain after taking Ambien, as zolpidem is known in the US. He was starved of oxygen when his car overturned and he landed face down in a garden pond near his home in Houston, Texas, in 1998. "The doctors said he was clinically dead - one said he was a vegetable," says Pat. "After three weeks he suffered multi-organ failure and they said his body would ultimately succumb. They said he would never regain consciousness."

He survived and four years later, while visiting a clinic, Pat gave him a sleeping pill because his constant moaning was keeping her and her husband, Del, awake in their shared hotel room. "After 10 to 15 minutes I noticed there was no sound and I looked over," she recalls. "Instead of finding him asleep, there he was, wide awake, looking at his surroundings. I said, 'George', and he said, 'What?' We sat up for two hours asking him questions and he answered all of them. His improvements have continued and we talk every day. He has a terrific sense of humour and he carries on running jokes from the day before.

"It is difficult to describe how it feels to get someone back who you were told you had lost for ever. There is a bond that has been restored and it validates our absolute belief that all along George was locked inside there somewhere. It tells us that we were right and the doctors were wrong. George, and his personality, were in there the whole time".

What is persistent vegetative state?

Though it sounds unkind to refer to a human in such terms, even medical dictionaries define persistent vegetative state (PVS) as the condition of living like a vegetable: in other words, existing without consciousness or the ability to initiate voluntary action. Though people in this state may occasionally give the impression of being awake and sentient, making random movements and opening their eyes and even appearing to smile or cry, they are unable to respond to communication or demonstrate awareness of their environment. This is different from an ordinary coma, in which the patient's eyes are closed, and which rarely last more than four weeks. The other key difference is that a person in a coma hasn't necessarily lost all cognitive function (ie, brain power); they are just temporarily unable to access it. If they recover - and many do - they may have cognition afterwards.

PVS is the result of irreparable damage to the cerebral cortex - the "thinking, feeling" part of the brain - but it is not to be confused with brain death. And while the "persistent" bit in the title indicates that the condition, unlike coma, is generally deemed permanent, there are intermittent reports of "recoveries". Last week, it was reported that a 23-year-old woman who has been in a vegetative state since suffering devastating brain damage in a traffic accident was suddenly able to understand speech. And in 2003 an Arkansas man, Terry Wallis, returned to consciousness 19 years after he was injured in a car accident, stunning his mother by saying "Mom" and then asking for a drink of fizzy pop. Such breakthroughs are controversial, in both medical and legal circles. The British Medical Association, for example, currently deems such miraculous events not as recoveries from PVS, but as an indicator of an earlier misdiagnosis.

Because legal systems do not generally equate PVS with death, and diagnosis is difficult, there have been several famous court cases involving people in this condition. The most high-profile centred on Terri Schiavo, a 26-year-old Florida woman who went into a PVS after collapsing and suffering a heart attack in 1990. In 1998 her husband, Michael Schiavo, petitioned for her gastric feeding tube to be removed; her parents did not believe the diagnosis and took the case to court to prevent medical care being withdrawn. Ultimately, the court challenges were unsuccessful and in 2005 Schiavo's feeding tube was removed, leading to her death.

There is no treatment for PVS. Instead, the medical team concentrate on preventing infections and maintaining the patient's physical state as much as possible. The most common cause of death for a person in a vegetative state is infection such as pneumonia. For most such patients, life expectancy ranges from two to five years; survival beyond 10 years is unusual.
Helen Pidd



The Sleeping Pill May Make Brain Injury Victims More Responsive


- 2006 George Melendez was a driven young man with a passion for baseball and played on his college's varsity team. His life came to a standstill during his junior year in 1998 when his parents learned that he may never play ball again.

"We got the call at 4 o'clock in the morning from the hospital telling me my son was on life support," said Melendez's mother Pat Flores.

Melendez was in a devastating car wreck which resulted in a severe brain injury -- which reduced him to barely more than a vegetable.

Today, eight years later, he has full time care at home and cannot walk, or feed himself. There is no cure for this kind of brain damage.

Experts say that the prescription sleeping pill Ambien could if help reverse Melendez's state although the pill helps millions of Americans sleep at night, it actually helps Melendez become more alert. He can respond to his parents by either shaking his head yes or no and sometimes even speaks.

"I knew it was the medicine, the Ambien," Flores said.

New Hope for Coma Victims

Doctor Ralf Clauss has studied the effects of Ambien on just three patients -- including Melendez. He speculates that while brain injury may cause some parts of the brain to remain dormant, sometimes the drug may temporarily reverse this change

"We are seeing restoration of consciousness and restoration of function in our patients," Clauss said.

Dr Nicholas Schiff of Cornell Medical School studies brain injuries and has never seen this phenomenon and says that the finding is important.

"I'm not surprised to hear it," he said. "I think it's a piece with a lot of things that really deserve more attention and more study."

Doctors say that this side effect of Ambien is very rare -- many brain injured patients take Ambien and never see the same sort of wakening as Melendez. Still others say that it could be the brain healing itself that is causing this alertness, not the Ambien, but Flores thinks otherwise.

She received a prescription for her son in 2002 when his constant moaning prevented them both from sleeping at night. The surprise came 10 minutes after he received his first dose.

"I noticed there was no sound coming out of George. And I looked over to the next bed and said, 'Hey, George.' And he comes and says 'what?' And that was the first time he had spoken. I tugged at my husband and said. 'Look, look he is talking,'" she said.

A Miracle

Flores and her husband spent the rest of the night making a video tape of Melendez, who for the first time since his accident was alert, responsive and talking.

"Can you say the word no?" his father asked in the video.

"No," Melendez said.

"Your voice. I love your voice," Flores said.

"That was perfect Georgie," his father said.

Since that very first dose in 2002, pat has given Melendez Ambien three times a day every day.

"It was glorious for us to hear his voice again," Flores said. "The little changes we see -- they are monumental to us."

ABC News visited Melendez to witness the transformation induced by Ambien. Before taking the drug, he was unresponsive, stiff and uncomfortable. His last dose of the drug had been the night before. After his morning dose of Ambien, he said his name and could make the number one and the number two with his fingers.

Flores says Melendez will show effects from the drug for hours before it wears off. Doctors can't say whether he will continue to improve on Ambien, but for the time, Flores is happy to have just a little more of her son back.

    June 10 2006 at 09:42AM   By Sheree Russouw

Sienie Engelbrecht is praying for another miracle: that her bedridden, paraplegic son, Louis Viljoen, will one day be able to walk.

"I'm a great believer in miracles," says 57-year-old Engelbrecht as she folds away another newspaper article about her son.

"The Lord already gave us one miracle. Why won't we have two? I know he's listening to my prayers."

'The Lord already gave us one miracle'
Seven years ago, a common sleeping pill, Zolpidem, awoke her brain-damaged son from a three-year coma - making this the first case of its kind in the world.

Louis's Lazarus-like recovery has made headlines with medical professionals heralding it as a medical breakthrough that offers hope for other brain-damaged people.

In the coming months, British company ReGen will begin clinical trials with Zolpidem on 30 coma patients in South Africa, in the hope that the drug will also bring them back to life.

Its effect on Louis has been remarkable, says his mother. Photos of the now 36-year-old man adorn the wall above his bed, marking each of the 10 birthdays he has spent here at the Ikhaya Tini Vorster rehabilitation centre in Dunnottar, near Springs.

Engelbrecht points to a photo showing Louis wearing a suit taken shortly before his vehicle accident.

Permanent vegetative state
"He was wearing that same suit in the accident," says Engelbrecht.

In May 1996, the 25-year-old Louis, who was working as a switchboard operator at a hospital, was hit by a truck while riding home on a bicycle.

He was airlifted to Johannesburg Hospital, where doctors diagnosed him as being in a permanent vegetative state (PVS). They told his mother he would never recover.

The next three years were "hell" for Engelbrecht. She visited her son every day - but he could not talk, move or make eye contact with her.

Hope returned in January 1999 after Engelbrecht visited her local doctor, Wally Nel, who prescribed Zolpidem to help her sleep. When she went to visit Louis later, a nurse told her he was "restless and agitated".

"I crushed my sleeping pill and gave it to him. A few minutes later, his face started to change. His eyes that were normally glazed opened. He made a sound and smiled," said Engelbrecht.

"I thought I was dreaming. I said: 'Can you hear me, Louis?' He said: 'Yes.' Then, 'Hello mommy.' I cried."

Exactly how Zolpidem reawakened Louis is "mind-boggling", says Nel. Since then, he and several of his medical colleagues including Dr Ralf Clauss, a consultant in nuclear medicine in Britain, have pioneered research into the phenomenon.

Clauss's scans have revealed that Louis's brain function improved more than 50 percent on Zolpidem. The doctors believe that for every damaged part of the brain, there is a dormant area that acts as a protective mechanism. These dormant cells awaken and get to work if they are stimulated properly, which is what Zolpidem seems to do.

Over the years, Louis's dosage has decreased and now he is often conscious without it. Louis doesn't remember his accident or his coma but recognises family and friends and recounts important dates and even remembers the name of his high school principal.

Sleeping pill 'woke up' man in coma
see also Dad overjoyed as daughter speaks after 20 years PVS



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