Xavierbreath said:Before you request to see another man's credentials, it is customary to show your own. Care to share?
We are not talking about yelling at a scuba diver from a boat. We are not talking about some graduate student's physics dissertation either. We are talking about the possible permanent, irreversible damage that may be caused to a developing human being. We are talking about the human body and studies that have already been done regarding how sound outside the womb affects the fetus, not the physics of sound waves traveling between air and water. I'll list a few related studies I quickly googled up below, but any pregnant woman who has attended a fireworks display after three months gestation can tell you that the fetus reacts to the sound, thus lending credence to the theory that sound reaches the fetus.
The difference between a graduate student's findings and medical findings could be the volume of fluid in the study, the fluid being in an enclosed space versus open water, or even the skin/tissues forming a tympanic type membrane. More likely, the difference is that the graduate student was not performing studies with pregnant patients, much less publishing medical results. The medical evidence is heavy, indeed conclusive, that the fetus is affected by sound. The risks/benefits are still being studied. Meanwhile, mothers-to-be read to, and play music for their unborn children.
Just my own research, with sources to back it up. Same as what you did. But I wasn't the one claiming to be a doctor. The guy was wrong in every aspect, sound travels 5 times faster in water than air, not 20. And sound that originates in the air isn't amplified to someone in the water, it's just the opposite due to impedance. I have difficulty believing he's a physician unless he proves his credentials.
BTW, the first reference I posted relating transfer of sound across different mediums is not that of a Grad student, they're online lecture notes from a professor, a doctorate at USU.
Furthermore, if you want to question qualifications to speak on this matter due to credentials (And yours are just as questionable), we have a verified OB-GYN on THR weigh in with the same stance I did on this thread , just 2 weeks ago.
Here:
http://www.thehighroad.org/showthread.php?p=2969779#post2969779
shooting while pregnant
--------------------------------------------------------------------------------
to my fellow THR colleagues,
it is easy to find opinions;
wisdom is harder to come by.
i thought i learned my lesson previously. [right, Pax?]
suffice it to say that i am indeed an OB/GYN (no, really)
(my contact info is below, feel free to verify).
and a shooter--
i have other creds as well, but i doubt they make any difference...
as Juna points out
Quote:
This is something they don't really teach in medical school. Many physicians aren't familiar with the risks b/c they're completely ignorant about shooting. So unless you find an OB/GYN who's encountered the situation before, you're not likely to get a great answer.
The risks, as you mentioned, would be lead exposure and possibly noise.
i have encountered the situation of pregnant women shooting many times before.
and i must be able to assess risk to the mom & fetus; its what i do
many physicians are ignorant about guns and shooting: true.
most physicians have little interest or training in teratogenics: true
(they have little use for the information;
except OB/GYNs who must asses risks for moms -teratogenic or otherwise-).
many physicians 'err on the side of caution' and recommend against
possibly situations of which they have little knowledge or understanding:
true, and correctly so.
ionized lead in large quantities is teratogenic, especially if ingested.
shooters ALREADY have lead in their systems; stable & unionized, mostly bound to bone.
lead is not cleared if a prenant woman stop shooting for, say, 9 months.
with normal precautions (hand washing, etc) the incremental increase in
exposure to lead from shooting and the resultant risk is infinitesimal.
(so pregnant moms can shoot from the lead risk perspective.
however, prenant moms can also certainly shoot 'green' lead free ammo
and forgo ANY risk and contraversy in that regard)
though sound is well transmitted through water or air,
it is not amplified in water but dissapates just like in air.
sound, however is VERY POORLY transmitted across interfaces of differing materials.
hence, the sound recieved by the fetus is not at a level near that
of the shooter. (i have used the swimming pool analogy which TommyGun cites many times.
i usually use a hot tub with the jets on...bear in mind, too, that the uterine environment is not silent.)
further there are many exponentially louder environments wherein
pregnant women are exposed to prolonged high sound pressure levels
(stamping plants, baggage/cargo loading on airport tarmac)
so since women can work in the factory or on the tarmac with only
ear protection for themselves and no prohibition from OHSA or
other safety authorities, it is safe for women to shoot from the noise perspective.
The thread in which I previously posted on this topic at length is:
http://www.thehighroad.org/showthrea...t=72938&page=2
I would be happy to e-corresond or speak to you by phone to address any of your fears and concerns.
Sincerely,
doc
[email protected]
Peter L. Stevenson, MD FACOG
Assoc Clinical Professor
Wayne State University
School of Medicine
Detroit, Michigan
313.278.3900 (office)
"Always willing to assist in the defense of the righteous against the loud."
Jim Simmons, Esq
[email protected]
Peter L. Stevenson, MD FACOG
Assoc Clinical Professor
Wayne State University
School of Medicine
Detroit, Michigan
313.278.3900 (office)
If you would like to give him a tongue lashing and question his credentials as well, feel free to give him a call.