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The
pediatrician ordered the following tests:
platelet
count
bleeding
time
Protime
(PT)
Activated
partial thromboplastin time (APTT)
8.
What conditions might cause an elevated or decreased platelet
count?
9. What is a bleeding time?
10. Which
pathway is measured with a PT?
11. Which pathway is
measured with an an APTT?
12. Which health care
professional is responsible for the above testing?
Based
on the coagulation study results, the pediatrician ordered factor
assays on factors VIII, IX, and XI and XII.
13.
From the testing results, which factor would you suspect might be
abnormally low or missing in this patient?
Based
on the coagulation studies, the Pediatrician diagnosed Steven
with severe hemophilia
A. He
referred Steven to a hematologist for further treatment.
Review the hemophilia link and the
following sections of module 5 in the workbook: Genetic
Overview and Mechanisms of Inheritance. Review Objective 2
and the following questions.
14.
Why did the physician label Steven's hemophilia as severe?
15.
What can be predicted by the degree of severity of the
disease?
16. What sex carries the hemophilia gene?
17.
What sex can inherit the hemophilia gene?
18. If a woman
is a carrier for the hemophilia gene, what percentage of her
daughters will also be carriers? What percentage of her
sons will have hemophilia?
19. Typically, why do males
and not females have hemophilia? Why are females typically
only carriers of the disease?
20. If a male has
hemophilia, what percentage of his sons will have hemophilia?
What percentage of his daughters will be carriers? Why?
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