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Maternal Blood Volume. During pregnancy the plasma volume increases by 40-50% and the red blood cell volume increases only by 20–30%. [22] These changes occur mostly in the second trimester and prior to 32 weeks gestation. [24] Due to dilution, the net result is a decrease in hematocrit or hemoglobin, which are measures of red blood cell ...
There is not clear evidence whether oral electrolyte and vitamin treatments (such as magnesium, calcium, vitamin B or vitamin C) are effective in treating leg cramps during pregnancy. [22] Round Ligament pain – Round ligament pain commonly occurs in the second trimester and manifests as a sudden, sharp pain in the groin area or lower abdomen ...
The second trimester screen looks at specific blood markers, to include the estriol, inhibin and human chorionic gonadotropin hormones and often consists of Alpha-fetoprotein (AFP) screening. Any abnormal results from these screening tests can indicate the possibility of abnormal conditions such as Trisomy 18, Trisomy 21 (Down syndrome), and ...
Elevated alpha-fetoprotein refers to a state where alpha-fetoprotein levels are outside of the reference range. There are two categories of AFP tests: tests performed on serum (blood plasma), and tests performed on amniotic fluid. Tests performed on serum are further categorized by the reason for performing the test: maternal serum, adult tumor ...
Both circulating and placental levels of soluble fms-like tyrosine kinase-1 (sFlt-1) are higher in women with pre-eclampsia than in women with normal pregnancy. [26] sFlt-1 is an anti-angiogenic protein that antagonizes vascular endothelial growth factor (VEGF) and placental growth factor (PIGF), both of which are proangiogenic factors. [15]
[4] [5] Blood tests taken in the second trimester may reveal increased levels of serum human chorionic gonadotropin and reduced levels of alpha-fetoprotein. [20] [21] The mother may also experience vaginal bleeding, particularly in the third trimester. [11] Women with velamentous cord insertion may not experience any symptoms throughout ...
The triple test, also called triple screen, the Kettering test or the Bart's test, is an investigation performed during pregnancy in the second trimester to classify a patient as either high-risk or low-risk for chromosomal abnormalities (and neural tube defects). The term "multiple-marker screening test" is sometimes used instead.
The diagnostic criterion for pre-eclampsia is high blood pressure, occurring after 20 weeks gestation or during the second half of pregnancy. [1] Most often it occurs during the 3rd trimester of pregnancy and may occur before, during, or after delivery. [1] The seizures are of the tonic–clonic type and typically last about a minute. [1]