CASE STUDY # 2 A 2-year-old black girl is being seen by the hematologist after her pediatrician found her to be severely anemic with splenomegaly and jaundice. Her mother gives a possible history of a “blood problem" in her family but doesn't know for sure. Her hemoglobin electrophoresis was normal, and the complete blood count (CBC) revealed a normocytic anemia. The platelet and white blood cell counts are normal. On the peripheral smear, there are many bizarre erythrocytes, including spiculated cells. A diagnosis of pyruvate kinase deficiency is made. 6. In the RBCS of the patient described above, which of the following would be expected ? A. ADP to ATP ratios would be elevated above normal. B. NADP+ would increase relative to NADPH. C. Ribulose 5-phosphate levels would decrease. D. NADH to NAD+ ratios would decrease. E. Methemoglobin levels would increase. Explanation for answer in no. 6:

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Chapter1: Biochemistry: An Evolving Science
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CASE STUDY # 2
A 2-year-old black girl is being seen by the hematologist after her pediatrician found her to be
severely anemic with splenomegaly and jaundice. Her mother gives a possible history of a “blood
problem" in her family but doesn't know for sure. Her hemoglobin electrophoresis was normal, and
the complete blood count (CBC) revealed a normocytic anemia. The platelet and white blood cell
counts are normal. On the peripheral smear, there are many bizarre erythrocytes, including
spiculated cells. A diagnosis of pyruvate kinase deficiency is made.
6. In the RBCS of the patient described above, which of the following would be expected
? A. ADP to ATP ratios would be elevated above normal.
B. NADP+ would increase relative to NADPH.
C. Ribulose 5-phosphate levels would decrease.
D. NADH to NAD+ ratios would decrease.
E. Methemoglobin levels would increase.
Explanation for answer in no. 6:
Transcribed Image Text:CASE STUDY # 2 A 2-year-old black girl is being seen by the hematologist after her pediatrician found her to be severely anemic with splenomegaly and jaundice. Her mother gives a possible history of a “blood problem" in her family but doesn't know for sure. Her hemoglobin electrophoresis was normal, and the complete blood count (CBC) revealed a normocytic anemia. The platelet and white blood cell counts are normal. On the peripheral smear, there are many bizarre erythrocytes, including spiculated cells. A diagnosis of pyruvate kinase deficiency is made. 6. In the RBCS of the patient described above, which of the following would be expected ? A. ADP to ATP ratios would be elevated above normal. B. NADP+ would increase relative to NADPH. C. Ribulose 5-phosphate levels would decrease. D. NADH to NAD+ ratios would decrease. E. Methemoglobin levels would increase. Explanation for answer in no. 6:
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