Critical and Creative Thinking Questions
1. Jane feels tired all the time. She is often short of breath when
she tries to exercise, but her lung function tests come back
normal. Her doctor wants to assess whether she is suffering
from anemia. What type of test should he order? If Jane has
anemia, what might the expected test results be?
2. During an occupational accident in a nuclear lab, Jim was
exposed to high doses of gamma radiation. He feels tired and
weak, and he is especially prone to any infection that comes
along. His CBC panel shows that numbers of all formed ele-
ments are well below normal. Which of his cells were damaged
by the radiation exposure?
3. John is a 60-year-old male who presented at the emergency
room with a heart attack. The physicians quickly gave him an
intravenous drip containing tissue plasminogen activator (tPA).
Within minutes, his coronary artery was clear, and blood flow
had been re-established to the heart. What caused the block-
age, and how did tPA administration solve the problem?
4. Julia is expecting her first child, and you are her health provider.
While Julia is Rh-negative, there is a possibility that her baby is Rh+
positive. She asks you to explain hemolytic disease of the new-
born and whether her baby is in danger. What is your response?
5. The Pittsburgh Steelers are preparing for a game against
the Denver Broncos at Denver in seven days. Because the
atmospheric pressure is lower in Denver than in Pittsburgh,
there are lower amounts of gases in the air. This can affect
the performance of athletes, so the Steelers travel to Denver
immediately to begin practice. At the end of the week, the
team doctor takes blood samples from random players and
finds that, in all of them, the hematocrits are increased and
the erythropoietin levels are higher than normal. Explain the
mechanism that would account for these results.
What is happening in this picture?
It is essential that a donor and recipient be
closely matched in the millions of blood
transfusions that occur each year. The blood
being administered here is type A.
Think Critically┬╗
1. D escribe how the techni-
cian determ ined the blood type.
2. W hich recipient blood types w ould be com -
patible with this blood?
3. W hat blood type(s) could this donor receive?
What is happening in this picture? 305
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