отвечает далее:
Some cultures use saunas and steam to help with labor. The risk of
birth defects has passed by the time the fetus is full term.
http://www.activebirthcentre.com/pb/wbusingabirthpool.shtml"The tricky part is that neural tube defects can occur in an embryo
before a woman realizes she's pregnant. That's why it's important for
all women of childbearing age (15 to 45) to include folate in their
diets: If they get pregnant, it reduces the chance of the baby having
a birth defect of the brain or spinal cord.
"Adequate folate should be eaten daily and throughout the childbearing
years," said Elizabeth Yetley, Ph.D., a registered dietitian and
director of FDA's Office of Special Nutritionals.
Folate's potential to reduce the risk of neural tube defects is so
important that the Food and Drug Administration requires food
manufacturers to fortify enriched grain products with folic acid. This
will give women one way to get sufficient folate: by eating fortified
breads and other grain products, such as enriched pasta, rice, waffles
and cereal bars."
Other maternal factors also may contribute to the development of
neural tube defects. These include:
family history of neural tube defects
use of certain antiseizure medications
severe overweight
hot tub use in early pregnancy
fever during early pregnancy
diabetes
Any woman concerned about these factors should consult her doctor.
http://www.childbirthsolutions.com/articles/pregnancy/folatebirthdefects/index.php"The March of Dimes recommends that pregnant women and women
attempting to conceive avoid hot tubs and saunas. A number of studies
have suggested that a body temperature of 102 degrees or higher during
the first four weeks after conception increases the risk of neural
tube defects, problems with closure of the baby's spinal cord or
skull. Besides steering clear of hot tubs and saunas, avoid exercising
strenuously on hot days. And contact your health-care provider if you
develop a fever over 100 degrees."
http://health.discovery.com/centers/pregnancy/americanbaby/pregsafety_02.html"What effect does hyperthermia in early pregnancy have? Some studies
have shown an increased risk for birth defects called neural tube
defects (NTD) in babies of women who had high temperatures early in
pregnancy.
Studies have suggested there may also be an increased risk for
miscarriage. Possible associations between high fever and birth
defects such as heart defects and abdominal wall defects have been
suggested. However, most studies did not find these results. The
potential risk for these problems is small. It is important to know
what caused your fever during pregnancy. Risks may be associated with
the cause of the fever, such as rubella infection, rather than from
the fever itself. Please discuss any concerns you may have with your
health care provider."
"What is a neural tube defect? Neural tube defects occur when the spine or
skull does not close properly. About 1 to 2 out of every 1,000 births
has a neural tube defect. An opening in the spinal column is called
spina bifida. The majority of babies with spina bifida grow to
adulthood. The most severe open skull defect is called anencephaly.
Infants with anencephaly have a
severely underdeveloped brain and usually die at or shortly after birth."
This is a cached page, meaning it may not be available much longer, If
you find this information helpful, I;d advise you to print it out.
http://66.102.7.104/search?q=cache:qLs1uLjkT1kJ:www.ctispregnancy.org/pdf/hyperthermia.pdf+birth+defects+%2B+hot+tubs&hl=en"The March of Dimes recommends that pregnant women and women
attempting to conceive avoid hot tubs and saunas. According to them, a
number of studies have suggested that a body temperature of 102
degrees or higher during the first four weeks after conception
increases the risk of neural tube defects, problems with closure of
the baby's spinal cord or skull." "Women were twice as likely to
suffer miscarriages if they took dips in hot tubs during the first 10
weeks of pregnancy, a survey of San Francisco-area women found.
The findings don't definitively link hot tub use to miscarriages.
Instead, they only imply some sort of connection exists. However,
study author Dr. De-Kun Li says that should be enough to keep newly
pregnant women -- and those who wish to become pregnant -- out of hot
tubs.
"It's a personal choice at this point, but why take the risk?" asks
Li, an epidemiologist with the Kaiser Permanente Research Institute in
Oakland, Calif.
Doctors have advised pregnant women against use of hot tubs and
whirlpools for some time. But previous research hasn't provided enough
information to give women with a firm recommendation about hot tub
use, Li says.
Researchers do know, however, that high body temperatures caused by
fever can lead to birth defects, especially those that prevent the
skull or spinal cord from forming properly."
http://www.rhtubs.com/pregnancy.htm"The evidence for human teratogenicity from elevated maternal body
temperature, whether from fever or hot tub use, continues to
accumulate.[81,82] Retrospective clinical studies in women suggested
that maternal hyperthermia is teratogenic. In a review of 43 pregnancy
histories of women who gave birth to infants with meningomyeloceles,
three had fevers of over 102 F (38.9 C) between the 25th and 28th days
of gestation.[83] None of the 63 control subjects had fever during
this period of gestation. A significant increase in fever among
mothers who delivered infants with spina bifida has also been
found.[85] In a study of 23 retrospectively selected children who had
been prenatally exposed to temperatures of 38.9 C or more between 4
and 14 weeks of gestation, similar patterns of malformations were
found including growth deficiency, CNS defects, and variable facial
malformations. In 6 of 23 cases, heat exposure was attributable to
sauna bathing or hot tub use, suggesting that hyperthermia rather than
an infectious agent was the teratogenic insult.
In a prospective follow-up study of 23,491 women who were screened by
serum a-fetoprotein or a-fetoprotein in amniotic fluid following
amniocentesis, Milunsky et al[88] identified 5566 women exposed to
either hot tub, sauna, fever, or regular electric blanket use during
the first trimester of pregnancy. Exposure to heat in the form of hot
tub, sauna, or fever was associated in all cases with an increased
risk for neural tube closure defects. Of the three, the adjusted
relative risk for hot tub use was the highest at 2.8 (95% CI , range
1.2-6.5). Electric blanket exposure was not associated with a risk for
neural tube defects. In another study of karyotyped spontaneous
abortuses, 18% of women who had euploid spontaneous abortions had
experienced a fever of 100 F or more, compared with women with
aneuploid abortuses, of whom only 7.1% had febrile episodes.
Hyperthermia experimentally produces spontaneous abortion and
congenital defects in animals. Immersion of one uterine horn in water
of 40 to 41 C for 40 to 60 minutes on the 8th to 16th day of pregnancy
in rats produced neural tube closure defects, other CNS anomalies, and
a high rate of fetal resorption.[91] In pregnant guinea pigs, exposure
to 43 C external temperature for 1 hour daily was associated with
multiple fetal anomalies when the exposure occurred from the 18th to
the 25th day of gestation in 86% of fetuses. When this treatment was
performed before the 18th day of gestation, there was an equally
dramatic rate of fetal death and resorptions."
This site requires a free membership to read the entire article.
Copyright laws prevent me from posting the entire article.
http://www.medscape.com/viewarticle/410896_print" The use of saunas and hot tubs that maintain a temperature greater
than body temperature should be avoided due to their potential for
causing overheating and possible effects on the developing baby.
Precautions
Avoid possible overheating. Check with your health care provider for
recommendations."
http://babies.sutterhealth.org/during/preg_precautions.html#Saunas%20and%20Hot%20Tubs"Fifteen studies, reporting on 1,719 cases and 37,898 noncases, were
included in the meta-analysis. The overall odds ratio for neural tube
defects associated with maternal hyperthermia was 1.92 (95% confidence
interval = 1.61-2.29). When analyzed separately, the 9 case-control
studies had an odds ratio of 1.93 (1.53-2.42). The summary relative
risk for the 6 cohort studies was 1.95 (1.30-2.92)."
Conclusions: Maternal hyperthermia in early pregnancy is associated
with increased risk for neural tube defects and may be a human
teratogen.
http://www.epidem.com/pt/re/epidemiology/abstract.00001648-200503000-00010.htm;jsessionid=CT1IfBvwrLm1IGDNV5J5lMu3H76OUZHHssQgAvdUEFistqzdbF2Y!-1327733816!-949856031!9001!-1"There's no evidence to suggest that heat impacts a woman's eggs, but
we do know that hot tubs and saunas aren't recommended during
pregnancy. Some studies show that raising your temperature during
early pregnancy increases the risk of birth defects. If you really
want to play it safe, skip the hot tub for now or limit visits to the
weeks just prior to ovulation."
http://www.babycenter.com/expert/preconception/gettingpregnant/1336309.html"Kaiser Permanente researcher De-Kun Li, MD, PhD, found that women who
used hot tubs or Jacuzzis after conception were twice as likely to
have a miscarriage as women who did not.
"Based on our findings I would say that women in the early stages of
pregnancy -- and those who may have conceived but aren't sure -- might
want to play it safe for the first few months and avoid hot tubs or
any exposure to hot water that will significantly increase body
temperature," says Dr Li. "Although the finding is still preliminary,
it is prudent for women to take such precautionary measures to reduce
unnecessary risk of miscarriage."
The study, "Hot Tub Use during Pregnancy and the Risk of Miscarriage,"
found that the miscarriage risk went up with more frequent hot tub or
Jacuzzi use and with use in the early stages of a pregnancy.
Furthermore, among women who remembered the temperature settings of
their hot tubs or Jacuzzis, the study found some indications that the
risk of having a miscarriage may increase with higher water
temperature settings."
http://sheknows.com/about/look/2297.htm"Pregnant women beware! Soaking in water above 102 degrees Fahrenheit
can cause fetal damage during the first three months of pregnancy
(resulting in the birth of a brain damaged or deformed child).
Pregnant women should stick to the 100-degree maximum rule."
http://www.cpsc.gov/cpscpub/prerel/prhtml79/79071.html"A high body temperature has been associated with some cranial (head)
and nervous system birth defects. The original studies looked at
women who used saunas. Other studies have raised suspicion about
maternal fevers (temperatures at or above 102 degrees-F). It is
believed that the danger period is the early first trimester. The
general recommendation is to avoid raising the core body temperature
in the first half of pregnancy. Recreational hot tubs are included in
the warning. Tepid, bathtub soaks (101 degrees-F or cooler) are
probably not a significant cause of elevated core body temperature. A
good rule of thumb is that if you begin to feel warm or hot, your core
body temperature is rising, and you should get out of the heat source
and cool off."
http://www.abcbirth.com/dPreparingfor.html"If you are pregnant or have heart disease, consult a doctor before
taking a sauna."
http://www.holistic-online.com/hydrotherapy.htm"You Should Avoid Raising Your Body Temperature
There is a potential danger to the developing fetus if your body
temperature rises above 102 degrees. You can raise your body
temperature to this level by getting a fever, by exercising too
strenuously, working outside on hot summer days, and so on.
You Should Not Use a Sauna, Hot Tub or Take Long Hot Baths
Hot tubs and hot baths have a tendency to raise your body
temperature and therefore are to be avoided. See the previous item for
details."
http://www.bygpub.com/natural/pregnancy.htm I can see no problem using a hot tub of 98-100 degrees near the end of
your pregnancy, if, and only if, your doctor clears it for you. S/he
is the only one aware of all your medical conditions and your
pregnancy.
I hope this answers all your questions. Please ask for an Answer
Clarification if any part of this answer is unclear. I will be happy
to assist you further, before you rate this answer.
Sincerely, Crabcakes
Fetal damage + hot tubs
birth defects + hot tubs
saunas + birth defects
neural tube damage + hot tubs
Japanese + pregnant + saunas
Swedish + pregnant + hot saunas
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