Vedecke studie

Ac jsem se zarekla, ze uz nebudu hledat, Tve neustale predhazovani toho, ze nemam skutecne argumenty me posadily pred Google jeste jednou. Tak snad toto budou dostatecne autority:

1) Effects of repeated prenatal ultrasound examinations on childhood outcome up to 8 years of age: follow-up of a randomised controlled trial.
Newnham JP, Doherty DA, Kendall GE, Zubrick SR, Landau LL, Stanley FJ.
Lancet. 2004 Dec 4;364(9450):2038-44.

"FINDINGS: Examinations were done at 1, 2, 3, 5, and 8 years of age on children born without congenital abnormalities and from singleton pregnancies (intensive group n=1362, regular group n=1352). The follow-up rate at 1 year was 85% (2310/2714) and at 8 years was 75% (2042/2714). By 1 year of age and thereafter, physical sizes were similar in the two groups. There were no significant differences indicating deleterious effects of multiple ultrasound studies at any age as measured by standard tests of childhood speech, language, behaviour, and neurological development."



2) The study, "Adverse Birth Outcomes in Relation to Prenatal Sonographic Measurements of Fetal Size," is published in the April 2003 issue of the Journal of Ultrasound Medicine.
The research team determined that the fetal group representing the lowest 5th percentile (weighing at birth less than what 95 percent of newborns weigh) is at dramatically increased risk for adverse neonatal outcomes. Although previous studies have focused on the risk facing the lowest 10th percentile, this study found that fetuses between the 5th and 20th percentile are all at about the same peril: less risk than the smallest fetuses but greater risk than average-sized fetuses.
The study also found that an ultrasound examination as early as 15 weeks gestation (25 weeks before full term) could predict 29 percent of adverse neonatal outcomes

3) Multiple Prenatal Ultrasound Examinations Do Not Hinder Child Development - Medscape analysis - [Medscape registration is free]

4)Studies in humans have never shown any behavioral changes. One randomized study of almost 3,000 Australian women who received normal ultrasounds at 18, 24, 28, 34, and 38 weeks gestation did demonstrate a lower birth weight of their children than the controls (Lancet, October 1993). An American study reviewed previous birth records of 13,000 pregnancies. This study looked specifically at the association of ultrasound exposure during pregnancy and the risk of low birthweight in the offspring. There was no indication of any adverse effect of prenatal ultrasound (American Journal of Perinatology, July 1994).

Another large study reviewed medical records and looked at rates of childhood cancer, neurologic problems, dyslexia, speech delay, left-handedness, and low birth weight in recipients of prenatal ultrasound. No associations were proven between ultrasound and any of these conditions, but there was insufficient data to reach a conclusion about left-handedness and low birth weight (Ultrasound in Obstetrics and Gynecology, October 1995).

In 1996 we received the first report of actual tissue damage in human fetuses after a one hour ultrasound. A repeat ultrasound 24 hours later revealed changes in the cell membranes and in the intracellular structures of the early fetuses. These changes disappeared within 3 days (Chung Hua Fu Chan Ko Tsa Chih, March 1996).

http://www.drgreene.com/21_839.html


Zaver Dr.Greena je mi velmi blizky:
"We must respect what we do not yet know. Still, used judiciously, prenatal ultrasound is a truly wonderful tool."