Why is it more common for doctors to recommend amniocentesis and cvs for women over the age of 35?
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Answer:
The age of 35 years was established to offer invasive techniques, because at this age the risk of secondary abortion was balanced by the technique and the risk of chromosomal alteration.
Explanation:
The possibility of early diagnosis of fetal anomalies of various kinds (neural defects, chromosomopathies, etc.) has been one of the top concerns of gynecologists and geneticists, for obvious reasons.
Throughout these years, prenatal diagnostic techniques have been developed that allow therapeutic decisions by doctors or viability of pregnancy by parents. These techniques are initially performed with non-invasive methods (biochemical determinations, ultrasound), and if the suspicion is increasing, it is passed to more invasive techniques such as amniocentesis or chorionic villus biopsy.
Given that in the latter there is a risk of loss of pregnancy, it is previously attempted to ensure that the indication is correct, and for this, new biochemical tests and risk calculation systems have been added.
Until recently the criterion for establishing the risk of fetal chromosomal abnormality was the mother's age, since there was a clear relationship between maternal age and chromosomal abnormalities, especially Down. The age of 35 years was established to offer invasive techniques, because at this age the risk of secondary abortion was balanced by the technique and the risk of chromosomal alteration. The problem was that a small number of cases were detected. Therefore, other parameters have been sought that estimate more precisely those subsidiary chaos of early detection.
The estimation of the risk in a given pregnant woman is done by multiplying the risk associated with her age for the specific gestational age.
Currently, most prenatal tests consist of AFP, estriol and human chorionic gonadotropin (hCG), which is the triple test, which is a blood test that assesses the risk in a pregnancy of having a Down syndrome or spina bifida It is not a test that tells us whether or not the fetus has any of these defects. It is a test that tells us the probability of risk of having them. Studies have shown that about 70% of fetuses with Down syndrome can be identified early combining the analysis of the mother's age and the results of the triple test.
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What property of water prevents rapid temperature change inside the body of organism?
Water has the ability to dissolve salts and carry dissolved carbon dioxide. How does this action help the human body maintain homeostasis?A: the body will be able to absorb materials it needs form the environment B: Both are involved in providing energy to the cells.C: Waste can be removed from the cells of the body.D: These materials can be cycled through the body.
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Answer:
Lactate, ethanol and carbon dioxide can be produced.
Explanation:
Glycolysis can takes place anaerobically in case of limited supply of oxygen and in absence of oxygen. Special enzymes are required for the anaerobically glycolysis to occur under the special circumstances.
The limited supply of oxygen, the glycolysis produce lactate as the major product. The absence of oxygen condition is responsible fior the production of ethanol by the glycolysis. Carbon dioxide is produced as the by product during both the cases.
Thus, the correct answer is ethanol, carbon dioxide and lactate.
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Fahrenheit temperature scale is a scale based on 32 for the freezing point of water and 212 for the boiling point of water, the interval between the two being divided into 180 parts. The 18th-century German physicist Daniel Gabriel Fahrenheit originally took as the zero of his scale the temperature of an equal ice-salt mixture and selected the values of 30 and 90 for the freezing point of water and normal body temperature, respectively; these later were revised to 32 and 96, but the final scale required an adjustment to 98.6 for the latter value.
Until the 1970s the Fahrenheit temperature scale was in general common use in English-speaking countries; the Celsius, or centigrade, scale was employed in most other countries and for scientific purposes worldwide. Since that time, however, most English-speaking countries have officially adopted the Celsius scale. The conversion formula for a temperature that is expressed on the Celsius (C) scale to its Fahrenheit (F) representation is: F = 9/5C + 32.
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As a part of the height and weight assessment, the school nurse should analyse and evaluate Jordan's BMI, following which proper advice has to be given regarding his weight management.
Jordan's BMI can be calculated as:
BMI = Weight (in kg) ÷ Height² (in m)
From the given data, his weight and height are:
Weight = 275 pounds = 124.74 kg
Height = 5'6'' = 1.68 m
Therefore, his BMI will be = = 44.2
According to the calculated BMI, Jordan falls under the category of obesity grade II. This puts him at a risk of lifestyle disorders such as cardiovascular diseases, diabetes, and hypertension.
Jordan must be made aware of the consequences of his weight as well as his eating habits. He should be advised on a proper diet to be followed for reduction of weight and prevention of diseases.
As he has started withdrawal and avoidance, he should also be encouraged to seek counselling. His parents and friends can also be involved in this process, which will provide him with the required motivation and not criticism.
Learn more about weight management in:
#SPJ2
Instead of not eating altogether, eat healthy snacks that are high in protein and low in carbohydrates and fat. Vegetables, nuts, and fruits are all great snacks. Come to school more often on gym days, to help you get more exercise, and spend about an hour outside doing physical activities every day. Go for a walk around your neighborhood.
Ignore the bullies, they just feel bad about themselves and take it out on you.