Answer: Difference between presumptive test and confirmation test
Explanation:
A presumption test or screening is a test to detect diseases in early stages and shows the prevalence of a disease in the population, it is performed in asymptomatic people, which is classified as having or not having the disease that is sought, the objective of these tests are to reduce morbidity-mortality in the study population, confirmatory tests or diagnostic tests are those that confirm or rule out the disease and are performed after a screening test, an example is HIV-AIDS tests, in which the screening test is performed on the population with risky sexual contacts called the rapid test, ELISA and if it is positive, the Western Blot confirmation test is performed.
Answer:
b. Latent
Explanation:
About 1/3 of the worlds population have TB but do not show any signs or symptoms. This is because during Latency the bacilli is efficiently contained in the lungs by the immune cells such as neutrophils and macrophages.
Answer:
The answer is B double-blind study
Explanation:
In this type of scientific study neither the experimenter nor the researcher knows the study sample, during the period that the experiment lasts, in order not to influence the results.
Answer: the nurse will refer this child to a specialist for a bone marrow biopsy.
Explanation:
From the symptoms which where observed by the primary health care provider, the child had recurrent fevers, bone pain, and a recent loss of weight. While the physical examination revealed scattered petechiae, lymphadenopathy, and bruising. On further Laboratory diagnosis of the blood film, the full blood count revealed:
--> thrombocytopenia ( low platelet level)
--> anemia( lack of red blood cells) and
--> an elevated white blood cell count.
The major importance of full blood count is to evaluate the general health and detect a variety of of disorders. Since the blood picture is not normal, the health care provider should refer the child for BONE MARROW BIOPSY.
This is because the blood cells are produced from the bone marrow. Bone marrow biopsy is a test done to show if the bone marrow is healthy and able to make normal amount of blood cells.
The results of the bone marrow biopsy will help the primary care nurse to determine the cause of the abnormalities seen in the blood picture and will give the best directions to follow for an appropriate diagnosis and treatment.
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