Ionizing radiation can have many different effects on a fetus. There are many significant factors to consider when looking at an overall effect of radiation on a fetus in each trimester of pregnancy. The effects of radiation on a fetus vary dramatically depending on gestational age, the dosage of radiation they receive, and the manner in which they were exposed.
The first trimester of pregnancy is the most sensitive trimester for a developing fetus. There are a few different ways that mothers and fetuses can be exposed during this sensitive time. They can be exposed accidentally, knowledgably, or with no knowledge of the pregnancy. An example of an accidental exposure is a radiation accident, like Chernobyl. There was no way to record the actual dosage of radiation that each child received in utero, or the amount of women who had spontaneous abortions after being exposed to the accidental radiation. It has been shown that those babies “exposed during the most sensitive period of pregnancy performed less well [on verbal IQ tests] than those who were exposed after week 16 of pregnancy” (Heiervang 213). There appear to be more significant birth defects and abnormalities in fetuses who were exposed prior to the 16 week gestational mark.
Another way that a fetus could be exposed to ionizing radiation if the mother had no knowledge of the pregnancy prior to a test involving radiation. The threshold of radiation before becoming harmful to the infant is 100 mGy. In a study where women were exposed to barium enemas before they knew they were pregnant “suggest that barium salts are very unlikely to be of any concern in pregnancy” (Han 587). It seems that if fetuses are exposed to less than 100 mGy at any point in the pregnancy the outcome...
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...of IR exposures” (Soklov 15701). It is important for researchers to be able to study stem cells so that they can continue to find measures that can prevent cell death and malformations in mothers and fetuses.
Many of the experts agree that the dose should be kept as low as possible with minimal exposure to the fetus of any age. It has been shown that fetuses before 16 weeks are the most sensitive to any dose of ionizing radiation and have been shown to have lower IQ’s and verbal scores than those exposed after 16 weeks. Fetuses exposed after 16 weeks have the same amount of risk as children up to 10 years old getting cancer. It is very important to take in to consideration gestational age, shielding, the position of the x-ray tube and the amount of necessity that is considered in taking a radiographic image or performing a radiographic procedure in a pregnant woman.
the effective doses from diagnostic CT procedures are typically estimated to be in the range of 1 to 10 mSv. This range is not much less than the lowest doses of 5 to 20 mSv estimated to have been received by some of the Japanese survivors of the atomic bombs. These survivors, who are estimated to have experienced doses slightly larger than those encountered in CT, have demonstrated a small but increased radiation-related excess relative risk for
The maximum recommended radiation doses in pregnancy are 50 mGy [Stovall, 1995 #6]. A CT has a dose of _________ which is well below the max recommended. A MRI is a preferable mode of assessment and even when contrast has been used it has not been associated with any teratogenic effect. CT scans may be more widely available and a diagnosis in a suspected case should not be delayed because...
The opportunity to bring life into the world is a priceless moment, and for that to be threatened by a disease; such as Placenta Previa, is heartbreaking. Placenta previa is commonly described as the imbedding of the placenta over or close to the cervix. According to the Permanente Medical Group, during a normal pregnancy the placenta forms at the top part of the uterus far from the cervix. However in placenta previa, the placenta tends to attach to the lower section of the uterus either covering or partially over the cervix, making it almost impossible for a normal delivery (vaginal birth) to take place (Placenta Previa). Placenta previa complicates about 1 in every 200 deliveries and is one of the top leading causes of vaginal bleedings for the second and third trimester (Getahun). It is also related with the escalation of risks of maternal and infant illness and death (Getahun). Instead of there being a specific or many solutions over the years, doctors have come to agreement with different treatments for placenta previa. The obvious solution to placenta previa is to reduce your risks by avoiding cigarettes and any type of drugs, try to reduce your use of abortions an cesarean section, meaning no elective C-sections (The Bump). However, because the reduction in the things above is unlikely due to the mind-frame and unawareness of today’s women, the medical board has to think of alternative treatments to placenta previa, such as bed rest, constant monitoring through-out the pregnancy, and cesarean section. In this essay, I will evaluate the above listed treatments, which stage the doctor will suggest the treatment and explain which I believe is best.
Childbirth is nothing short of a miracle. The placenta—the organ connecting a developing fetus to the uterine wall and allowing for waste elimination, nutrient uptake and gas exchange via the mother's blood supply—filters most harmful substances that threaten an embryo, though some may still pass on to the fetus. These harmful substances, called “teratogens,” range from environmental chemicals to the transmission of maternal diseases, and can negatively impact the normal developmental cycle of a fetus. The title “teratogen,” however, refers to any substance or chemical exposure with the potential to cause birth defects in prenatal development. Exposure to teratogens can result in a broad spectrum of physiological and psychological issues in later life, including malformations of the body.
Although there are many factors that affect the development of the fetus, research on the specific effects of prenatal maternal stress and the resulting negative outcomes for the development of the fetus will be reviewed. While there is knowledge of these harmful effects in scientific and medical communities, researchers are still in the midst of discovering the results of these negative effects on human development. An overall review of the literature suggests that this topic is still relatively new in research as most of the articles make note that despite the amount of current research studies, there are still many unanswered questions.
of the usage of radiation and effects it can cause an unborn foetus. A standard pregnancy check, if not worked right and asked correctly could imply stereotyping and thus cause great offence to the patient and/ or their family. Radiographers need to ensure that they justify to the patient (and in some cases family) why they are asking for the pregnancy check. For example instead of asking ‘are you pregnant?’ or ‘could you be pregnant?’ radiographers should instead ask ‘because this examination involves the usage of radiation, is there any chance that you could be pregnant?’
...s still unknown, it is clear that the fetus is harmed by the abnormal intrauterine environment” (Waisbren, 1999, para. 1). It is important for mothers either with PKU or carrying the PKU gene to ensure that they stick to the low-Phe diet, and to ensure potential fathers are not carriers of the gene either.
The affects teratogens can have on the developing fetus can vary greatly. Research provided from the University of Iowa’s on teratogens explains some of the possible outcome to exposure to certain teratogens. Listed birth defects resulting from exposure to teratogens, range from prenatal death, to physical and mental abnormalities.
There are many factors that are integrated into the successful development of a child from Prenatal growth into toddlerhood. Teratogens (outside factors) have a great impact on the babies’ inutero development. Some outside factors like second-hand smoke, smog, or fumes from cleaning chemicals can cause negative effects on the child inside the womb. A few major affects from teratogens could result in low birth weight, head circumference, slow physical growth as well as an effect on mental, behavioral and motor skills (Berk, 2003). The environment around the mother provides many of these outside factors affecting the baby’s growth. But the main link to teratogens during the gestation period is most likely the mother. Daniel S. Messinger and the National Institute on Drug Abuse found that 2.8% of pregnant women admitted to using illicit drugs during their pregnancy (1996). Through illicit drug use, tobacco use and alcohol use, the mother disrupts her baby’s growth with possibly permanent damage.
Pregnant women have to be careful while pregnant. They have to watch out for various speed bumps. There are tons of toxins that can hurt the baby in the womb. The mother is responsible for most of these, after all she is the one who is carrying the baby. Many of these factors can result in death. It is really sad that it has to end that way some of the time. The worst toxins for a baby to encounter while in the mother’s uterus are different types of drugs and alcohol. Those two things can could serious problems for the infant once it gets into their system. They enter into the baby’s bloodstream from the mother, and cause problems from there on out.
During a pregnancy there are many choices to be made and smoking should not be one of them. Smoking while pregnant can cause major effects before the birth of the child and also in the child’s future. Here are a few effects before the actual birth of the child: 1) Cigarettes contains a large number of chemicals that harm unborn babies. 2) Smoking raises the levels of carbon monoxide in your bloodstream. This gives less oxygen for baby. 3) Nicotine tightens the blood vessels, meaning the oxygen is passed over less effectively to the baby 4) Miscarriage or stillborn.
(Gilman, Breslau, Subramanian, Hitsman, & Koenen, 2008). Despite the warnings about the dangers of smoking while pregnant, some women still choose to smoke, which places themselves and their baby at risk for many health issues. Damage caused by smoking while pregnant During pregnancy, smoking can cause problems for a woman’s own health, including, ectopic pregnancy, vaginal bleeding, placental abruption, in which the placenta peels away, partially or almost completely, from the uterine wall before delivery; Placenta Previa, a low-lying placenta that covers part or all of the opening of the uterus (March of Dimes, 2011). Women that smoke expose their unborn baby to dangerous chemicals, like carbon monoxide, tar and nicotine.... ...
For a while it’s been said that x-rays are dangerous for your baby in the uterus. The majority of women do not consider having an x-ray in this situation. Women actually stop going to the dentist because they believe going to the dentist can damage the health of the baby (Weiss, 2012). Should women who are pregnant continue to go to the dentist? If they continue to come, what effects if any does radiation have, on the mom and the baby?
Every woman when pregnant has a 3-5% chance of having a baby born with a birth defect, and these chances increase when the developing fetus/ embryos are exposed to teratogens, whether it’s intentional or unintentional (Bethesda (MD), 2006). Teratogens can cause severe birth defects, malformations, or terminate the pregnancy altogether (Jancárková, & Gregor, 2000). The placenta is known as an effective barrier from any detrimental pathogen that can potentially hurt the fetus. The timing of exposure of any teratogen is critical to the impact of prenatal development (Bethesda (MD), 2006). The most vulnerable time of the fetus for severe damage is during early pregnancy when all the major organ and central nervous system (CNS) are developing. Miscarriages have an important role in keeping a pregnancy from evolving when there is something serious going on with the developing fetus/embryo. Miscarriages are more common than we think and are the most familiar type of pregnancy loss (Bethesda (MD), 2006).
when talking about the radioactive wastes risks we have to mention that, they still radioactive even after the usage .and this depending on the kind of usage and the length of time that the material was used .thisclearly cancause a greater risk of getting tumors, cancer and any other harmful effects .pregnant women and babies are two major critical conditions in resaving the radiation and interacting with it. Chernobyl is a great example of what radwastecan do to people. This disorder begins in UKRAINE in 1986. The reports states that, the soviet reactor design coupled with industriously mistakes by the plant...