2x03 assignment
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York University *
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Course
54
Subject
Medicine
Date
Nov 24, 2024
Type
Pages
1
Uploaded by BrigadierMaskScorpion70
What are the concerns of cosmic radiation in pregnant women?
❖
For an air crew member, the cosmic radiation dose rate is greater than the ground level during
high-altitude flights
●
The International Commission on Radiological Protection recommends a limit of 1 mSv
dose throughout the pregnancy
❖
For an occasional passenger, the effect of cosmic radiation is low
❖
Risks of fetal development
●
Germinal Stage (1
st
- 2
nd
weeks)
■
High exposure can lead to death of the embryo or miscarriages (exposure of
≥
0.1 Gy)
○
Embryo only has few cells and if one cell is damaged, the progenitor of
other cells
can cause the death of embryo and blastocyst fails to implant in uterus
●
Embryonic Stage (3
rd
- 8
th
week)
■
Structural abnormalities
●
Fetal Stage
■
Radiation exposure after first trimester leads to birth defects, and cognitive
dysfunction (mental retardation, IQ testing)
■
Fetus is highly sensitive during 3rd - 4th week of pregnancy
■
Increases the risk of childhood leukemia
References
Geeze D. S. (1998). Pregnancy and in-flight cosmic radiation.
Aviation, space, and environmental
medicine
,
69
(11), 1061–1064.
National Center for Environmental Health. (2020, June 5).
Radiation and pregnancy: Information for
clinicians
. Centers for Disease Control and Prevention. Retrieved March 19, 2023, from
https://www.cdc.gov/nceh/radiation/emergencies/prenatalphysician.htm
National Institute for Occupational Safety and Health. (2023, February 24).
Aircrew Safety & Health -
Cosmic Ionizing Radiation
. Centers for Disease Control and Prevention. Retrieved March 19,
2023, from https://www.cdc.gov/niosh/topics/aircrew/cosmicionizingradiation.html#:~:text=Cos
mic%20
ionizing%20radiation%20(or%20cosmic,higher%20levels%20of%20cosmic%20radiation.
National Institute for Occupational Safety and Health. (2023, February 24).
Aircrew Safety & Health -
Reproductive Health
. Centers for Disease Control and Prevention. Retrieved March 19, 2023,
from https://www.cdc.gov/niosh/topics/aircrew/reproductivehealth.html#:~:text=Exposure%20
to%20ionizing%20radiation%20at,to%20increased%20risk%20of%20miscarriage.
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