martes, 21 de mayo de 2013

Fever reducers don't slow children's recovery: study: MedlinePlus

Fever reducers don't slow children's recovery: study: MedlinePlus


Fever reducers don't slow children's recovery: study

Friday, May 17, 2013
By Trevor Stokes
NEW YORK (Reuters Health) - A review of past research finds that fever-reducing drugs have no effect on the speed of children's recovery from an infection, contrary to the fears of some doctors and parents.
Researchers have debated for decades whether lowering a sick child's fever helps the recovery process or interferes with the body's ability to fight the infection.
Some previous research has shown that giving children fever-reducing "antipyretic" medications, such as acetaminophen, after vaccinations interfered with their immune responses to the vaccines, for example.
"There's no evidence that antipyretics slow down recovery," said Alison While, a professor of community nursing at King's College London and senior author of the new study.
Nevertheless, While and her coauthor caution in their report in the Journal of Pediatrics, their findings don't mean they encourage parents to use the medications at the first sign of fever either.
"Many many parents are using antipyretics with small children whenever they get a slightly raised temperature. This is madness," While told Reuters Health.
Because of the ongoing debate and the fact that few researchers have examined the health benefits or harms in reducing a fever during illness, While and colleague Edward Purssell combed the literature.
They found only six clinical studies that examined the effect of using anti-fever medications on a total of 657 sick children.
Three of the studies focused on children infected with malaria and the rest included fevers that came from chickenpox and other viral infections.
Feverish children given anti-fever meds returned to normal body temperature four hours more quickly than those without meds, on average, but all children recovered from their respective infections with equal speed, the researchers found.
For While and other health experts, the result not only shows that antipyretics do no harm to recovery time, it also highlights parents' quick willingness to stave off a fever, with little evidence it does any good.
"Fever-phobia - this great fear that fever is such a horrible thing for their child" drives the overuse of anti-fever meds by parents, according to Dr. Janice Sullivan, medical director of the Kosair Charities Pediatric Clinical Research Unit at the University of Louisville.
Sullivan, who was not involved in the current study, coauthored 2011 American Academy of Pediatrics recommendations to decrease use of anti-fever medicines for children.
"The bottom line is this: You never want to give your child a drug that they don't truly need because all drugs, even if you can buy them over the counter, have a potential for side effects," Sullivan told Reuters Health.
"They can cause injury to the liver for acetaminophen and to the kidney for ibuprofen; they're not benign drugs," Sullivan said.
The deciding factor in giving antipyretics is typically discomfort, Sullivan added. If children are whiny, have aches and joint pain, they may need to be treated, but otherwise, a fever temperature will limit itself and won't require treatment, Sullivan said.
She recommended that parents talk with their pediatricians about what symptoms beyond fever should be of concern and may warrant a doctor's visit.
For example, a child with a weakened heart won't do well with a fever and could benefit from anti-fever meds.
Another expert went further, saying that anti-fever meds had no place in a medicine cabinet.
"A true fever, caused by an infectious agent is never harmful; there's no reason why one should lower the temperature during infection," said Dr. Peter Kremsner, head of the Institute of Tropical Medicine at the University of Tübingen in Germany, and an author of three malaria studies included in the analysis.
One common worry among parents is that a high fever could overwhelm a child's body and lead to convulsions.
Kremsner said no evidence suggested that convulsions from fever existed. "It is always the infectious disease," he told Reuters Health.
SOURCE: The Journal of Pediatrics, online May 9, 2013.
Reuters Health
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