Part D- Module 19.4 Platelets More extensive blood work was performed once DH wa

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Part D- Module 19.4 Platelets More extensive blood work was performed once DH was settled in the pediatric oncology wing of University Hospital. A bone marrow biopsy was also quickly performed, so the results could be interpreted and used to formulate a treatment plan for DH. DH's blood was typed and cross matched in the probable event that she would need transfusions. There was concern that she might also need platelet transfusions to prevent further bleeding. DH's parents were obviously frightened by the urgency with which the oncology team performed their tasks. The oncologist was doing her best to keep them informed, but it was difficult. The pediatric oncology service had counselors knowledgeable in the field that could assist with family communication DH has thrombocytopenia, a condition in which the number of platelets in the blood has dropped. She may need platelet transfusions to replace these critical components of the blood. All of the following could cause a reduction in platelets except O chemotherapy that inhibits mitosis. death or loss of cells in the myeloid cell line. O abnormally shaped nuclei in the platelets that shorten the lifespan to 3-5 days low levels of thrombopoietin. Submit My Answers Give Up

Explanation / Answer

Reduction in platelets is also known as thrombocytopenia, because the hormone thrombopoietin, which regulates platelet level in blood, is reduced in this. So, Option ‘d’ is correct.

This occurs when there is decreased production of platelets or increased destruction of platelets. Note that all dividing body cells including platelets are destroyed during chemotherapy (option ‘a’ is correct).

The myeloid cells of bone marrow are responsible for the formation of all formed elements of the blood. So, a reduction in myeloid cell line cell may reduce the production of platelets. So, Option ‘b’ is also correct.

The correct option is ‘c’. Note that platelets do not have any nucleus. So, this option stands invalid.

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