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The Case of the Mother
with a Cold
Sarah,
a forty-nine year old Anglo woman, visits her physician complaining of weight
loss, sweating, listlessness and flu-like symptoms (fever, headache, scratchy
throat, generalized body ache). After checking her history the physician notes
that Sarah is married, has four children and no previous history of chronic
illness. Her weight has decreased 15 pounds over the past three months and she
presents with a temperature of 101o F, a slightly elevated pulse
(85 beats per minute), normal blood pressure (112/78 mm Hg) and slightly labored
breathing. Sarah has a negative family history of cardiovascular and respiratory
disease. All of her family members are living and are free of cardiovascular
or respiratory diseases. Sarah does not smoke and is current on all immunizations.
She does report that she developed these symptoms a few days after visiting
a friend whose son was home with a cold. After a chest X-ray and physical examination
of Sarah’s ear, nose and throat, the physician confirms the diagnosis and prescribes
bed rest, aspirin and a nasal decongestant. The physician also cautions Sarah
from returning to her normal activities until she has been afebrile for a minimum
of 24 hours.
Sarah’s
condition continues to worsen such that a week later she returns to her physician’s
office. She has pain on the left side of her chest, is coughing more frequently
and her sputum has a yellow color. Her respiratory rate is 32 breaths per minute
and her breathing is labored. Her blood pressure is unchanged and does not demonstrate
postural changes. Breath sounds indicate inspiratory rales and a chest X-ray
indicates a dense infiltrate within the lungs. Physical examination reveals
lymphadenopathy. The physician suspects pneumonia and orders laboratory
tests on Sarah’s blood and sputum. The results of the sputum tests indicate
the presence of gram positive diplococci and polymorphonucleocytes that
are too numerous to count. What concerns the physician, however, are the results
of Sarah’s blood test. Her blood tests indicate leukopenia, anemia,
and thrombocytopenia. In addition, the differential leukocyte count indicates
that the concentration of helper T cells has decreased. The physician now suspects
that Sarah has been infected with the human immunodeficiency virus (HIV)
and that she has developed pneumonia as a result of the immune suppression.
In reviewing
her history, the physician notes that Sarah has been married for the past 30
years and does not admit to any extramarital affairs. She has not received any
blood transfusions or blood products and does not use intravenous drugs. She
is a self-employed certified public accountant and has not visited any countries
with high incidences of HIV infection. Upon further discussion, Sarah does mention
to the physician that she and her husband were separated a few years ago for
approximately 6 months as a result of his extramarital affair. The physician
asks Sarah if he can run another test to determine whether or not she has contacted
HIV and asks Sarah to talk to her husband about being tested for HIV as well.
The physician also begins treating Sarah for the pneumonia that has developed
and asks her to return the next day for the results of the HIV test.
The
next day Sarah and her husband return to the physician’s office and the physician
confirms that the enzyme-linked immunoadsorbent assay confirms that Sarah is
HIV positive. The physician does mention that a second more sensitive test will
be conducted to confirm this finding, however, he is doubtful that the result
will indicate a false positive in the first test. Her husband admits to having
numerous extramarital affairs with both women and men and consents to a blood
test to determine his HIV status, which subsequently is positive. The physician
then discusses the replicative cycle of HIV, the concept of a retrovirus,
and treatment options with both Sarah and her husband. Sarah immediately starts
on a regimen of protease inhibitors and nucleoside analogs (azidothymidine,
AZT, and ddI). In addition, the physician discusses with Sarah and her husband
the necessity of practicing "safe sex" even though both are HIV positive
and the importance of not exposing themselves to opportunistic diseases. In
addition, he mentions that some of the drugs they will be taking to minimize
viral replication may cause nausea. He cautions them to take all medications
as scheduled and to return to his office at the first sign of any disorder.
He also reiterates that this disease can not be transferred by casual contact,
but can be transferred through an exchange of body fluids (blood, semen and
vaginal secretions).
Answer the following questions about this case
- Define the bold terms in the text.
Answer
- Why was HIV not initially considered as a possible
cause for the symptoms Sarah presented with?
Answer
- Why did Sarah’s symptoms worsen and develop into pneumonia?
Answer
- Identify
the specific types of leukocytes and the function of each cell.
Answer
- Why does HIV specifically affect one type of leukocyte?
Answer
- Why can protease inhibitors
and nucleoside analogs be used in minimizing the replication of the HIV virus?
Answer
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