Total Pageviews

Powered by Blogger.

My Blog

Popular Posts

About Me

My photo
An enthusiast photographer, blogger and dreamer. Currently a 5th year medical student in Mansoura, Egypt. Hometown in Malaysia

Followers

Fever

Thursday, July 8, 2010

Fever

26 Coping Tactics

"Man, are you hot!"

In some circles that's quite a compliment. At the moment, however, it's just a cold, hard fact: Your temperature's up, and you are quite uncomfortable. Right now, compared with you, the devil is a real cool dude. But before you take steps to douse the fire, listen to what doctors say.

Make sure you actually have a fever. Although 98.6°F is considered the norm, that number is not etched in stone. "Normal" temperature varies from person to person and fluctuates widely throughout the day. Food, excess clothing, emotional excitement, and vigorous exercise can all elevate temperature, says Donald Vickery, M.D., a corporate-health consultant and assistant clinical professor at Georgetown University School of Medicine. "In fact, vigorous exercise can raise body temperature to as high as 103°F. Furthermore, children tend to have higher temperatures than adults and greater daily variations.

"So here's a general rule: If your temperature is 99° to 100°F, start thinking about the possibility of fever. If it is 100° or above, it is a fever," he says.

Leonard Banco, M.D., an associate professor of pediatrics at the University of Connecticut School of Medicine, adds that often a person's appearance is a better indicator of his condition than hard-and-fast numbers. "A child with a raised temperature who looks ill needs attention sooner than one who looks and acts well."

Don't fight it. If you do have a fever, remember this: Fever itself is not an illness—it's a symptom of one. In fact, it's one of the body's defense mechanisms against infection, says public-health authority Stephen Rosenberg, M.D., an associate professor of clinical public health at Columbia University School of Public Health. And fever may even serve a useful purpose: shortening an illness, increasing the power of antibiotics, and making an infection less contagious. These possibilities should be weighed against the discomfort involved in letting a slight fever run its course, he says.

If you feel the need for extra relief, try the following steps.

MEDICAL ALERT


Know the Danger Signs

Donald Vickery, M.D., recommends that you see a doctor for:

  • Fever in a child less than 4 months old.
  • Fever associated with a stiff neck.
  • Fever above 105°F if home treatment fails to reduce it at least partly.
  • Fever above 106°F under any condition.
  • Fever that lasts more than five days.

Stephen Rosenberg, M.D., warns that in children under 6 an oral temperature of 102°F or higher can trigger convulsions. And adults with chronic illnesses, such as heart or respiratory disease, may not be able to tolerate prolonged high fevers.

Liquefy your assets. When you're hot, your body perspires to cool you down. But if you lose too much water—as you might with a high fever—your body turns off its sweat ducts to forestall further water loss. That makes it more difficult for you to cope with your fever. The moral of this story: Drink up, mateys, or your ship will be sunk. In addition to plain water, doctors favor the following.

Fruit and vegetable juices. These are high in vitamins and minerals, says nutrition counselor Eleonore Blaurock-Busch, Ph.D., president and director of Trace Minerals International in Boulder, Colorado. She particularly favors nutrient-dense beet juice and carrot juice. If you're thirsty for tomato juice, notes pharmacology professor Thomas Gossel, Ph.D., R.Ph., chairman of the Department of Pharmacology and Biomedical Sciences at Ohio Northern University, choose one that is low in sodium.

One doctor's botanical tea. Although any tea will provide needed fluid, several are particularly suited for fever, says Dr. Blaurock-Busch. (Look for the following unusual botanicals in health food stores.) One mixture she likes combines equal parts dried thyme, linden flowers, and chamomile flowers. Thyme has antiseptic properties, chamomile reduces inflammation, and linden promotes sweating, she says. Steep 1 teaspoon of the mixture in 1 cup of boiling water for 5 minutes. Strain and drink warm several times a day.

Linden tea. This tea by itself is also good, she says, and can induce sweating to break a fever. Use 1 tablespoon of the flowers in 1 cup of boiling water. Prepare as above and drink hot often.

Willow bark. This bark is rich in salicylates, which are aspirin-related compounds, and is considered "nature's fever medication," says Dr. Blaurock-Busch. Brew into a tea and drink in small doses.

Black elder. Another old-time fever treatment, black elder is preferable to willow bark if you can't tolerate aspirin, she says. Again, brew into a tea and drink as desired.

Ice. If you're too nauseated to drink, you can suck on ice. For variety, freeze fruit juice in an ice-cube tray. To entice a feverish child, embed a grape or strawberry in each cube.

Get compressed relief. Wet compresses help reduce the body's temperature output, says Dr. Blaurock-Busch. Ironically, she says, hot, moist compresses can do the job. When the patient starts to feel uncomfortably hot, remove those compresses and apply cool ones to his forehead, wrists, and calves. Keep the rest of the body covered.

But if the fever rises above 103°F, she says, do not use hot compresses at all. Instead, apply cool ones to prevent the fever from getting any higher. Change them as they warm to body temperature and continue until the fever drops.

Sponge off. Evaporation also has a cooling effect on body temperature. Philadelphia, Pennsylvania, nurse clinician Mary Ann Pane, R.N., recommends cool tap water to help the skin dissipate excess heat. Although you can sponge the whole body, she says, pay particular attention to spots where heat is generally greatest, such as the armpits and groin area. Wring out a sponge and wipe one section at a time, keeping the rest of the body covered. Body heat will evaporate the moisture, so you don't need to towel off.

Doctors warn that although alcohol evaporates more rapidly than water, it can be uncomfortable for someone with a fever. What's more, there's the danger of inhaling the vapors or even absorbing them through the skin.

Thermometer Ins and Outs

Your mother could gauge your temperature just by feeling your forehead. If you didn't inherit the knack—or if you don't have much confidence in this hands-on approach—you'll need to rely on thermometer readings. Here's how to get the most accurate results:

  • Before using a glass and mercury thermometer, hold it by the top end (not the bulb) and shake it with a quick snap of the wrist until the mercury is below 96°F. If you're concerned about dropping and breaking the thermometer, do this over a bed, says Stephen Rosenberg, M.D.
  • Wait at least 30 minutes after eating, drinking, or smoking before taking an oral reading, he says. These activities alter mouth temperature and will cause inaccurate readings.
  • Place the thermometer under your tongue in one of the "pockets" located on either side of your mouth rather than right up front. These pockets are closer to blood vessels that reflect the body's core temperature.
  • Hold the thermometer in place with your lips, not your teeth. Breathe through your nose rather than your mouth, so the room temperature doesn't affect the reading. Leave the thermometer in place for at least 3 minutes (some experts favor 5 to 7 minutes).
  • In children under 5, take rectal readings rather than oral ones. Rectal temperature is generally 1 degree warmer than oral. Recognize rectal thermometers by their shorter, rounder bulb.
  • To use a rectal thermometer, place your child, stomach down, on your lap and hold one hand on his buttocks to prevent movement, says Donald Vickery, M.D. Lubricate the end of the thermometer with petroleum jelly. Carefully insert it about 1 inch, but never use force. The mercury will start rising within seconds. Remove it when the mercury is no longer rising, after 1 or 2 minutes.
  • If a thermometer breaks in the mouth or rectum, don't panic. The mercury is not poisonous, and usually the only harm done is a superficial scratch of the mouth or lining of the rectum. But do call a doctor if you can't find all the pieces of glass.
  • After use, wash a glass thermometer in cool, soapy water. Never use hot water. And never store it near heat.
  • Use a digital thermometer according to the directions that accompany it. Afterward, wash the tip with soap and lukewarm water or with rubbing alcohol. Do not immerse the instrument completely or splash water on the readout; you risk ruining the thermometer. Be prepared to change the battery every two years.

Take a dip. "Often when I have a fever, I really start to shiver," says Dr. Gossel. "At that point I'm most comfortable getting into a tub of warm water."

Dr. Banco advises room-temperature baths for babies. An alternative treatment, he says, is to sandwich the child between wet towels and change them every 15 minutes.

Don't suffer. If you're very uncomfortable, take a pain reliever. For adults Dr. Vickery recommends either two aspirin or two acetaminophen tablets every 4 hours. The advantage of acetaminophen, he says, is that fewer people are allergic to it.

Since aspirin and acetaminophen exert their effects in slightly different manners, he notes, you might want to pair them up if one alone is not effective in controlling the fever. Take two aspirin plus two acetaminophen (a total of four tablets) every 6 hours. Or stagger the medications so you take two aspirin at one time and two acetaminophen 3 hours later. Make sure this therapy gets your doctor's approval.

Give children acetaminophen. Where those under 21 are concerned, avoid aspirin. That's because aspirin can trigger Reye's syndrome, a potentially fatal neurological illness, in feverish children. Instead, says New Orleans pediatrician George Sterne, M.D., a clinical professor of pediatrics at Tulane University School of Medicine, use 5 to 7 milligrams of acetaminophen per pound of body weight. Repeat every 4 hours. "There is no reason to give it more frequently," he says. "And excessive doses over a period of days are dangerous."

Dress the part. Use common sense as far as clothing and blankets go, says Pane. If you're very hot, take off extra covers and clothes so body heat can evaporate into the air. But if you have a chill, bundle up until you're just comfortable.

Be especially careful to monitor infants, who cannot undress themselves if they become overheated, cautions Dr. Sterne. In fact, he says, overdressing a child or leaving him in a hot place (such as a car) can actually cause a fever.

Create a healing atmosphere. Do your best to make the sickroom conducive to healing, says Dr. Blaurock-Busch. Don't overheat it—German doctors generally recommend that the temperature not exceed 65°F, she says. Allow just enough fresh air to promote recuperation but not to create a draft. And keep the lighting subdued so it's properly relaxing.

Eat—if you want to. Don't fret over whether you should feed a fever or starve one. Some doctors, like Dr. Blaurock-Busch, prefer juice fasting until the fever is reduced nearly to normal. Others feel that you should eat during a fever because the body's increased heat uses up calories. Ultimately, of course, the choice is yours and hinges on your appetite. Just remember to keep up your fluid intake.

PANEL OF ADVISERS

Leonard Banco, M.D., is an associate professor of pediatrics at the University of Connecticut School of Medicine in Farmington. He is also director of pediatric ambulatory services and assistant director of the Department of Pediatrics at Hartford Hospital in Connecticut.

Eleonore Blaurock-Busch, Ph.D., is president and director of Trace Minerals International, Inc., a clinical chemistry laboratory in Boulder, Colorado. She is also a nutrition counselor specializing in the treatment of allergy and chronic diseases at the Alpine Chiropractic Center there, and is the author of The No-Drugs Guide to Better Health.

Thomas Gossel, Ph.D., R.Ph., is a professor of pharmacology and toxicology at Ohio Northern University in Ada and chairman of the university's Department of Pharmacology and Biomedical Sciences. He is an expert on over-the-counter products.

Mary Ann Pane, R.N., is a nurse clinician in Philadelphia, Pennsylvania. She is affiliated with Community Home Health Services, an agency catering to people who require skilled health care in their homes.

Stephen Rosenberg, M.D., is associate professor of clinical public health at Columbia University School of Public Health in New York City. He is author of The Johnson & Johnson First Aid Book.

George Sterne, M.D., is a pediatrician in private practice in New Orleans, Louisiana. He is also clinical professor of pediatrics at Tulane University School of Medicine there.

Donald Vickery, M.D., is president of the Center for Corporate Health Promotion in Reston, Virginia. He is also assistant clinical professor of family medicine and community medicine at Georgetown University School of Medicine in Washington, D.C., and associate clinical professor of family medicine at the Medical College of Virginia in Richmond. He is the author of Life Plan for Your Health and coauthor of Take Care of Yourself.


article taken from: http://www.mothernature.com/Library/Bookshelf/Books/47/58.cfm

Anemia

Thursday, June 17, 2010

URL of this page: http://www.nlm.nih.gov/medlineplus/ency/article/000560.htm


Anemia is a condition in which the body does not have enough healthy red blood cells. Red blood cells provide oxygen to body tissues.

Hemoglobin is the oxygen-carrying protein inside red blood cells. It gives red blood cells their red color. People with anemia do not have enough hemoglobin.

See also:

  • Anemia due to B12 deficiency
  • Anemia due to folate deficiency
  • Anemia due to iron deficiency
  • Hemolytic anemia
  • Hemolytic anemia due to G-6-PD deficiency
  • Idiopathic aplastic anemia
  • Idiopathic autoimmune hemolytic anemia
  • Immune hemolytic anemia
  • Megaloblastic anemia
  • Pernicious anemia
  • Secondary aplastic anemia
  • Sickle cell anemia

Causes

The cause depends on the type of anemia. Possible causes include:

  • Certain medications
  • Diseases such as cancer or rheumatoid arthritis
  • Genes -- some forms of anemia can be inherited
  • Kidney failure
  • Blood loss (for example, from heavy menstrual periods)
  • Poor diet
  • Pregnancy
  • Problems with bone marrow (where blood cells are made)
  • Problems with the immune system that cause the destruction of blood cells
  • Surgery to the stomach or intestines that reduces the absorption of iron, vitamin B12, or folic acid

Symptoms

Possible symptoms include:

  • Chest pain
  • Dizziness or light-headedness (especially when standing up or with exertion)
  • Fatigue or lack of energy
  • Headaches
  • Problems concentrating
  • Shortness of breath (especially during exercise)

Some types of anemia may have other symptoms, such as:

  • Constipation
  • Problems thinking
  • Tingling

Exams and Tests

The doctor will perform a physical examination, and may find:

  • Pale skin
  • Rapid heart rate

Some types of anemia may cause other findings on a physical exam.

The following blood tests are used to diagnose anemia:

  • Blood levels of vitamin B12, folic acid, and other vitamins and minerals
  • Bone marrow examination
  • Red blood count and hemoglobin level

Other tests may be done to identify medical problems that can cause anemia.

Treatment

Treatment should be directed at the cause of the anemia, and may include:

  • Blood transfusions
  • Corticosteroids or other medicines that suppress the immune system
  • Erythropoietin, a medicine that helps your bone marrow make more blood cells
  • Supplements of iron, vitamin B12, folic acid, or other vitamins and minerals

Outlook (Prognosis)

The outlook depends on the cause.

Possible Complications

Severe anemia can cause low oxygen levels in vital organs such as the heart, and can lead to a heart attack.

When to Contact a Medical Professional

Call your health provider if you have any symptoms of anemia, or any unusual bleeding.

References

Antony AC. Megaloblastic anemias. In: Goldman L, Ausiello D, eds. Cecil Medicine. 23rd ed. Philadelphia, Pa: Saunders Elsevier;2007:chap 170.

Zuckerman KS. Approach to the anemias. In: Goldman L, Ausiello D, eds. Cecil Medicine. 23rd ed. Philadelphia, Pa: Saunders Elsevier;2007:chap 162.

Update Date: 4/5/2009

Updated by: Yi-Bin Chen, MD, Leukemia/Bone Marrow Transplant Program, Massachusetts General Hospital. Also reviewed by David Zieve, MD, MHA, Medical Director, A.D.A.M., Inc

John Forbes Nash, Jr.

Friday, May 21, 2010





Background

John Forbes Nash, Jr. (born June 13, 1928) is an American economist and mathematician whose works in game theory, differential geometry, and partial differential equations have provided insight into the forces that govern chance and events inside complex systems in daily life. His theories are used in market economics, computing, evolutionary biology, artificial intelligence, accounting and military theory. Serving as a Senior Research Mathematician at Princeton University during the later part of his life, he shared the 1994 Nobel Memorial Prize in Economic Sciences with game theorists Reinhard Selten and John Harsanyi.

Nash is the subject of the Hollywood movie A Beautiful Mind. The film, based rather loosely on the biography of the same name, focuses on Nash's mathematical genius and struggle with paranoid schizophrenia.


Early life

Nash was born on June 13, 1928 in Bluefield, West Virginia. His father, after whom he is named, was an electrical engineer for the Appalachian Electric Power Company. His mother, Margaret, had been a school teacher prior to marriage. Nash's parents pursued opportunities to supplement their son's education with encyclopaedias and even allowed him to take advanced mathematics courses at a local college while still in high school. Nash accepted a scholarship to Carnegie Institute of Technology (now Carnegie Mellon University) and graduated with a Master's Degree in only three years.


Post-graduate life

Nash's advisor and former Carnegie Tech professor, R.J. Duffin, wrote a letter of recommendation consisting of a single sentence: "This man is a genius." Nash was accepted by Harvard University, but the chairman of the mathematics department of Princeton, Solomon Lefschetz, offered him the John S. Kennedy fellowship, which was enough to convince Nash that Harvard valued him less. Thus he went to Princeton where he worked on his equilibrium theory. He earned a doctorate in 1950 with a 28 page dissertation on non-cooperative games. The thesis, which was written under the supervision of Albert W. Tucker, contained the definition and properties of what would later be called the "Nash Equilibrium". These studies led to four articles:

"Equilibrium Points in N-person Games", Proceedings of the National Academy of Sciences 36 (1950), 48–49. MR0031701

"The Bargaining Problem", Econometrica 18 (1950), 155–162. MR0035977

"Two-person Cooperative Games", Econometrica 21 (1953), 128–140. MR0053471

"Non-cooperative Games", Annals of Mathematics 54 (1951), 286–295.

Nash did ground-breaking work in the area of real algebraic geometry:

"Real algebraic manifolds", Annals of Mathematics 56 (1952), 405–421. MR0050928

See Proc. Internat. Congr. Math. (AMS, 1952, pp 516–517).

His most famous work in mathematics is the Nash embedding theorem, which shows that any abstract Riemannian manifold can be isometrically realized as a sub-manifold of Euclidean space. He made contributions to the theory of non-linear parabolic partial differential equations, and to singularity theory.


Personal life

As per Nash's biography, from 1951 onwards, he had a liaison with a nurse, named Eleanor Stier. They bore a child named John David Stier. Though Nash had thought of marrying her, he later decided against it and abandoned them.

In 1955, Nash went to the Massachusetts Institute of Technology as a C. L. E. Moore Instructor in the mathematics faculty. There, he met Alicia López-Harrison de Lardé (born January 1, 1933), a woman from El Salvador, whom he married in February 1957. She admitted Nash to a mental hospital in 1959 for schizophrenia; their son, John Charles Martin Nash, was born soon afterward, but remained nameless for a year because his mother felt that her husband should have a say in the name.

Nash won the Nobel Memorial Prize in Economic Sciences in 1994.


Schizophrenia

Nash began to show signs of extreme paranoia and his wife later described his behaviour as erratic, as he began speaking of characters who were putting him in danger. Nash seemed to believe that there was an organization chasing him, in which all men wore red ties. Nash mailed letters to embassies in Washington, D.C., declaring that they were establishing a government.


He was admitted to the McLean Hospital, April–May 1959, where he was diagnosed with paranoid schizophrenia. It is the most common type of schizophrenia in most parts of the world. The clinical picture is dominated by relatively stable, often paranoid, fixed beliefs that are either false, over-imaginative or unrealistic, usually accompanied by experiences of seemingly real perception of something not actually present—particularly auditory and perceptional disturbances, a lack of motivation for life, and mild clinical depression. Upon his release, Nash resigned from MIT, withdrew his pension, and went to Europe, unsuccessfully seeking political asylum in France and East Germany. He tried to renounce his U.S. citizenship. After a problematic stay in Paris and Geneva, he was arrested by the French police and deported back to the United States at the request of the U.S. government.


In 1961, Nash was committed to the New Jersey State Hospital at Trenton. Over the next nine years, he spent periods in psychiatric hospitals, where, aside from receiving anti-psychotic medications, he was administered insulin shock therapy.


Although he took prescribed medication, Nash wrote later that he only took it under pressure. After 1970 he was never committed to the hospital again and refused any medication. According to Nash, the film A Beautiful Mind inaccurately showed him taking new atypical anti-psychotics during this period. He attributed the depiction to the screenwriter (whose mother, he notes, was a psychiatrist), who was worried about encouraging people with the disorder to stop taking their medication. Others, however, have questioned whether the fabrication obscured a key question as to whether recovery from problems like Nash's can actually be hindered by such drugs, and Nash has said they are overrated and that the adverse effects are not given enough consideration once someone is considered mentally ill. According to Nasar, Nash recovered gradually with the passage of time. Encouraged by his then former wife, De Lardé, Nash worked in a communitarian setting where his eccentricities were accepted. De Lardé said of Nash, "it's just a question of living a quiet life".


Nash dates the start of what he terms "mental disturbances" to the early months of 1959 when his wife was pregnant. He has described a process of change "from scientific rationality of thinking into the delusional thinking characteristic of persons who are psychiatrically diagnosed as 'schizophrenic' or 'paranoid schizophrenic' including seeing himself as a messenger or having a special function in some way, and with supporters and opponents and hidden schemers, and a feeling of being persecuted, and looking for signs representing divine revelation. Nash has suggested his delusional thinking was related to his unhappiness, and his striving to feel important and be recognized, and to his characteristic way of thinking such that "I wouldn't have had good scientific ideas if I had thought more normally." He has said, "If I felt completely pressureless I don't think I would have gone in this pattern". He does not see a categorical distinction between terms such as schizophrenia and bipolar disorder. Nash reports that he did not hear voices until around 1964, later engaging in a process of rejecting them. Nash reports that he was always taken to hospitals against his will, and only temporarily renounced his "dream-like delusional hypotheses" after being in a hospital long enough to decide to superficially conform, behave normally or experience "enforced rationality". Only gradually on his own did he "intellectually reject" some of the "delusionally influenced" and "politically-oriented" thinking as a waste of effort. However, by 1995, he felt that although he was "thinking rationally again in the style that is characteristic of scientists", he felt more limited.

article taken from Wikipedia


Ozone Layer

Thursday, May 6, 2010

Whatever Happened to the Hole in the Ozone Layer?

Three British scientists shocked the world when they revealed on May 16th, 1985 - 25 years ago - that aerosol chemicals, among other factors, had torn a hole in the ozone layer over the South Pole. The ozone layer, which protects life on Earth from damaging solar radiation, became an overnight sensation. And the hole in the ozone layer became the poster-child for mankind's impact on the planet.

Today, the ozone hole - actually a region of thinned ozone, not actually a pure hole - doesn't make headlines like it used to. The size of the hole has stabilized, thanks to decades of aerosol-banning legislation. But, scientists warn, some danger still remains.

First, the good news: Since the 1989 Montreal Protocol banned the use of ozone-depleting chemicals worldwide, the ozone hole has stopped growing. Additionally, the ozone layer is blocking more cancer-causing radiation than any time in a decade because its average thickness has increased, according to a 2006 United Nations report. Atmospheric levels of ozone-depleting chemicals have reached their lowest levels since peaking in the 1990s, and the hole has begun to shrink.

Now the bad news: The ozone layer has also thinned over the North Pole. This thinning is predicted to continue for the next 15 years due to weather-related phenomena that scientists still cannot fully explain, according to the same UN report . And, repairing the ozone hole over the South Pole will take longer than previously expected, and won't finish until between 2060 and 2075. Scientists now understand that the size of the ozone hole varies dramatically from year to year, which complicates attempts to accurately predict the hole's future size.

Interestingly, recent studies have shown that the size of the ozone hole affects the global temperature. Closing the ozone hole actually speeds up the melting of the polar ice caps, according to a 2009 study from Scientific Committee on Antarctic Research.

So even though environmentally friendly laws have successfully reversed the trend of ozone depletion, the lingering effects of aerosol use, and the link between the ozone hole and global warming, virtually ensure that this problem will persist until the end of the century.


article is from Yahoo!

Lack of sleep linked to early death

Wednesday, May 5, 2010

Lack of sleep linked to early death: study

LONDON (AFP) – People who get less than six hours sleep per night have an increased risk of dying prematurely, researchers said on Wednesday.

Those who slumbered for less than that amount of time were 12 percent more likely to die early, though researchers also found a link between sleeping more than nine hours and premature death.

"If you sleep little, you can develop diabetes, obesity, hypertension and high cholesterol," Francesco Cappuccio, who led research on the subject at Britain's University of Warwick, told AFP.

The study, conducted with the Federico II University in Naples, Italy, aggregated decade-long studies from around the world involving more than 1.3 million people and found "unequivocal evidence of the direct link" between lack of sleep and premature death.

"We think that the relation between little sleep and illness is due to a series of hormonal and metabolical mechanisms," Cappuccio said.

The findings of the study were published in the Sleep journal.

Cappuccio believes the duration of sleep is a public health issue and should be considered as a behavioural risk factor by doctors.

"Society pushes us to sleep less and less," Cappuccio said, adding that about 20 percent of the population in the United States and Britain sleeps less than five hours.

Sleeping less than six hours is "more common amongst full-time workers, suggesting that it may be due to societal pressures for longer working hours and more shift work"

The study also found a link between sleeping more than nine hours per night and premature death, but Cappuccio said oversleeping is more likely to be an effect of illness, rather than a cause.

"Doctors never ask how much one sleeps, but that could be an indicator that something is wrong," said Cappuccio, who heads the Sleep, Health and Society Programme at the University of Warwick.

Research showed no adverse effects for those sleeping between six and eight hours per day.


p.s: nasihat pada diri sendiri- jagalah tidur anda!!

Expectant Mom's Exercise Keeps Newborn's Birth Weight Down

Tuesday, April 6, 2010

MONDAY, April 5 (HealthDay News) -- Regular moderate-intensity exercise during pregnancy reduces an infant's birth weight, which may lower the child's risk of obesity later in life, researchers say.

In a new study, 84 first-time pregnant women were randomly assigned to exercise or control groups, with those in the exercise group participating in a weekly maximum of five 40-minute sessions on a stationary cycle. They did this program until at least 36 weeks into their pregnancy.

Babies born to mothers in the exercise group were an average of 143 grams lighter than infants born to mothers in the control group, and also had a lower body-mass index (a measurement that takes into account height and weight), the researchers found.

The exercise training had no effect on the mothers' body weight or body-mass index during late pregnancy, and had no effect on insulin resistance from the start of the study to late gestation, according to the report published online in the Journal of Clinical Endocrinology & Metabolism.

"Our findings show that regular aerobic exercise alters the maternal environment in some way that has an impact on nutrient stimulation of fetal growth, resulting in a reduction in offspring birth weight," study co-author Dr. Paul Hofman, of the University of Auckland in New Zealand, said in an Endocrine Society news release. "Given that large birth size is associated with an increased risk of obesity, a modest reduction in birth weight may have long-term health benefits for offspring by lowering this risk in later life."

Hofman added that the "physiological response to pregnancy appears to supersede the chronic improvements in insulin sensitivity previously described in response to exercise training in non-pregnant individuals. This may be an important finding for athletes who want to continue regular training during their pregnancy as it suggests that training will not have a major adverse impact on insulin resistance."


SOURCE: The Endocrine Society, news release, April 5, 2010

HealthDay

data obtain from: http://www.nlm.nih.gov/medlineplus/news/fullstory_97212.html

Barotrauma

Monday, April 5, 2010

What is Barotrauma?

Barotrauma refers to injury sustained from failure to equalize the pressure of an air-containing space with that of the surrounding environment. The most common examples of barotrauma occur in air travel and scuba diving. Although the degree of pressure changes are much more dramatic during scuba diving, barotraumatic injury is possible during air travel.

Barotrauma can affect several different areas of the body, including the ear, face and lungs. Here we will focus on barotrauma as it relates to the ear.


What are the Symptoms of Barotrauma?

Symptoms of barotrauma include “clogging” of the ear, ear pain, hearing loss, dizziness, ringing of the ear (tinnitus), and hemorrhage from the ear.

Dizziness (or vertigo) may also occur during diving from a phenomenon known as alternobaric vertigo. It is caused by a difference in pressure between the two middle ear spaces, which stimulates the vestibular (balance) end organs asymmetrically, thus resulting in vertigo. The alternobaric response can also be elicited by forcefully equalizing the middle ear pressure with the Politzer maneuver, which can cause an unequal inflation of the middle ear space.

What Causes Barotrauma?

Barotrauma is caused by a difference in pressure between the external environment and the internal parts of the ear. Since fluids do not compress under pressures experienced during diving or flying, the fluid-containing spaces of the ear do not alter their volume under these pressure changes. However, the air-containing spaces of the ear do compress, resulting in damage to the ear if the alterations in ambient pressure cannot be equalized. Rarely, barotrauma may be the result of hyperbaric oxygen therapy. Slow compression hyperbaric oxygen therapy is associated with a lower risk of otoc barotraumas than traditional hyperbaric oxygen therapy.

Barotrauma can affect the outer, middle, or inner ear.


How is Barotrauma Diagnosed?

Diagnosis is initially based on careful history. If the history indicates ear pain or dizziness that occurs after diving or an airplane flight, barotrauma should be suspected. The diagnosis may be confirmed through ear examination, as well as hearing and vestibular testing.


How is Barotrauma Treated?

For outer ear barotrauma, the treatment consists of clearing the ear canal of the obstruction, and restricting diving or flying until the blockage is corrected and the ear canal and drum return to normal.

For middle ear barotrauma, treatment consists of keeping the ear dry and free of contamination that could cause infection. Topical nasal steroids and decongestants may be started in an attempt to decongest the eustachian tube opening. The presence of pus may prompt the use of appropriate antibiotics. Most tympanic membrane perforations due to barotrauma will heal spontaneously. If the eustachian tube demonstrates chronic problems with middle ear equalization, the likelihood of recovery is drastically reduced.

Prevention of air barotraumas to the middle ear has been attempted with dasal decongestants or vasoconstrictors with mixed results. “Pressure equalizing” ear plugs claiming to prevent in-flight barotrauma are available in many airports for purchase. A trial evaluating the effect of these earplugs to placebo found them to have no effect on barotrauma.

For inner ear barotrauma, treatment consists of hospitalization and bed rest with the head elevated 30 to 40 degrees. Controversy exists whether this type of injury needs immediate surgery. Once healed, a diver should not return to diving until hearing and balance function tests are normal.


this information is taken directly from American Hearing Research Foundation. More information can be obtain at its website.

 
Support : Creating Website | Johny Template | Mas Template
Copyright © 2011. The Common Room - All Rights Reserved
Template Created by Creating Website Inspired by Sportapolis Shape5.com
Proudly powered by Blogger