Haemolytic Disease of the Newborn: Rh factor
Haemolytic disease of newborns, also known as erythroblastosis fetalis, is the blood incompatibility can occur when the fetal red blood cells differ from those on maternal red blood cells (VanMeter & Hubert, p. 588). This paper will look at Haemolytic Disease of the Newborn and will focus the Rh factor.
Discovery
In 1940, Karl Landsteiner questioned whether animals of a similar species would have similarities or differences in their blood. He used related animals, like the Rhesus monkeys, in his research and injected their blood into guinea pigs and rabbits, to see if the resulting antisera distinguished human characteristics. His research led to the recognition of the Rh factor, named for the Rhesus donors (Owen, 2000). With this discovery, Landsteiner was able to offer better understanding that the Rh factor is a maternal-fetus incompatibility disease.
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If the test results come back with Rh-, then the partner is also tested. If both the mother and the partner are both negative, there aren’t any concerns. It is when the mother and the partner are both incompatible. Further testing is done to confirm the incompatibility as the Coomb’s Test, an
•A Coomb’s test is used to detect the presence of antibodies that coat and damage red blood cells (Moisio & Moisio, p. 134).
•Ultrasound
•Fetal Blood
Anti-CCP antibodies: This blood test detects antibodies to cyclic citrullinated peptide (anti-CCP) (3). This test is positive in most people with rheumatoid arthritis and can even be positive years before rheumatoid arthritis symptoms develop (4). When used with the RF, this test’s results are very useful in confirming a rheumatoid arthritis diagnosis (3).
This test is used to detect the hemolytic activity in the bacteria. A darkish green color on the media around the bacteria would represent incomplete hemolysis. A transparent media around the bacteria colony represents complete lysis of the red blood cells. If no change is observed around the bacteria colony then the bacteria is non-hemolytic. For my
1. Which of the following anemias is caused by a failure of the bone marrow to produce red blood cells and may be congenital or acquired?
There are four blood types found in humans. These are A blood type which has the genotype either AA or AO, B blood type which has the genotype either BB or BO, AB blood type which has the genotype AB, and O blood type which has the genotype OO. These genotypes show a combination of complete dominance and codominance. A and B traits are dominant to the recessive O trait, however, the A trait is codominant to the B trait. Each blood type codes for certain antigens. A blood codes for the A surface antigen, B blood codes for the B surface antigen, AB blood codes for both the A and B surface antigen, and O blood does not code for a surface antigen. Therefore to determine one’s blood type a test can be performed
However, analysis of intact fetal cells for detection of aneuploidies and genetic disease shifted away from this when in 1997, Lo et al. first reported the presence of fetal DNA circulating in maternal blood. Free fetal DNA (ffDNA) along with RNA (ffRNA) have opened the door to a multitude of downstream analytical techniques of the fetal genome and transcriptome. Because ffDNA can be isolated through noninvasive methods--all one requires is a sample of maternal blood--clinician-scientists have focused on improving diagnostic methods with ffDNA. Currently, ffDNA is used in the noninvasive diagnosis of Rhesus blood group genotype, sex determination, fetal aneuploidies, and other genetic disorders (Bianchi,
The goal of this experiment is to determine the blood types of the samples given and to learn what interactions occurred to each blood type. Determining an individual’s blood type and how it reacts with Anti A, Anti-B, and Anti Rh serums played a crucial part in this experiment. The researcher concluded that agglutination (clumping) occurred in some of the blood samples. For example, Mr. Smith’s blood reacted with Anti-A and Anti-Rh serums (antibodies) allowing the researcher to determine the blood type is A. Mr. Jones’s blood reacted with Anti-B serum but it did not react to Anti-A or Anti Rh allowing the researcher to believe that the blood type is B. Mr. Green’s blood reacted with all serums and caused a reaction to occur resulting the blood type to be AB positive. Mr. Green’s blood also had a positive marker for Rh factor. However, Ms. Brown’s blood had no reaction at all and the researcher determined if no reaction occurred then the sample had no antigens but proved to have some antibodies, resulting in blood type to be O. The purpose of this experiment is to determine whose blood has type A, B, AB, or O.
To identify red blood cells, basophils, eosinophils, monocytes, lymphocytes, neutrophils, sickle cell anemia and leukemia.
In this paper I will answer some questions about blood and related issues. Some of the questions I will answer are: what is the significance of a lower than normal haematocrit? what is erythropoiesis?why would the level of leukocytes be higher in an individual who has been infected with a parasitic disease. In regions where malaria is endemic, some people build up immune resistance to the malaria pathogen. Which WBCs are responsible for the immune response against pathogens? How do they function?
If your unborn baby develops severe anemia, the baby can receive a blood transfusion before being born (in utero), or you may be given immune globulin or antiviral medicines to combat the
pregnancies with abnormalities.“This is a test done during pregnancy to get information about the fetus
Prenatal testing, if both parents are identified as carriers, prenatal genetic testing can be done to determine if the fetus has inherited the defective gene copy from both parents. The testing is usually done between 10-14 weeks. The risk for miscarriage is 1% or less. The preimplantation genetic diagnoses involves gathering the mother’s egg for in vitro fertilization. The egg can then be tested and a healthy egg is implanted into the womb, and unhealthy embryos are discarded. This type of testing has also been successful in testing for cystic fibrosis, and sickle cell anemia to name a few. The last approach is the mate selection process. The Orthodox Jewish community forms an organization called the Dor Yeshorim. The purpose of this organization is to do anonymous screenings so that couples with Tay-Sachs disease or other genetic disorders can avoid conception
Hemophilia is the oldest known hereditary bleeding disorder. There are two types of hemophilia, A and B (Christmas Disease). Low levels or complete absence of a blood protein essential for clotting causes both. Patients with hemophilia A lack the blood clotting protein, factor VIII, and those with hemophilia B lack factor IX. A person with severe hemophilia has less than 1% of the normal amount of a clotting factor - either Factor VIII (8) or Factor IX (9). People without hemophilia have between 50-150% of the normal level of factor VIII or IX. There are about 20,000 hemophilia patients in the United States. Each year, about 400 babies are born with this disorder. Approximately 85% have hemophilia A and the remainder has hemophilia B.
The aim of this experiment was to determine the concentration of haemoglobin in an unknown blood sample using the haemoglobincyanide method and to adapt this method to determine percentage haemoglobin F (foetal haemoglobin) in an unknown sample, and to understand the relevance of these tests in the calculation of Hb concentration.
Usually hemihypertrophy occurs sporadically but familial cases are reported. Although molecular defects have not been identified in all cases,but there is evidence that IH occurs due to epigenetic defects or paternal uniparental disomy of genes of 11p15 in somatic mosaic form (Shubha R Phadke,
Occasionally a baby is born with this disorder and no family history of it. When this happens, it could be caused by a hidden gene, which is when several generations of female carry it, and it has not affected any male members of the family or a spontaneous mutation. With each pregnancy, a woman who is a carrier has a 25% possibility of having a son born with hemophilia. Since the father's X chromosome is what determines if the unborn child will be a girl, all of the daughters born of a man with hemophilia will be carriers. None of his sons, which is determined by the father through his Y chromosome, will have hemophilia. Individuals who suffer from mild hemophilia may choose to use a non-blood product known as Desmopressin acetate (DDAVP) to help treat the small bleeds and/or scrapes. For deep cuts or internal bleeding, the treatment called DDAVP may not be enough and therefore, may need a much more complex treatment. The clotting factor must be replenished so the affected person can form a clot to stop the bleeding. Plasma is one of the ‘human blood products’ than is used for factor replacement. Another factor replacement option is using the recombinant factor, which is produced in a laboratory.