Unformatted text preview: es B) how did the man most likely acquires an HIV infection? Contaminated needles C) cd4 cells are killed, impairing the 3rd line of defense ***important*** BIOL 2259, Learning Activity You are at your son’s baseball game when another boy’s dad experiences dizziness
and nearly faints in the stands next to you. You tell him that you are a paramedic
and will walk him to your car where you have your medical equipment. He reports
that he has had a headache off and on since he had a tooth extracted four days
ago. This evening he is feeling very weak.
His blood pressure is normal. When you listen to his heart you note that he has a
pronounced murmur. He reports having had rheumatic fever 15 years ago. You
examine his fingernails and find one that has tiny hemorrhages under it.
a. Which cardiovascular infectious condition is this? b. What is the most likely genus causing the infection and what was the route of
transmission? c. Why did you look at his fingernails? d. Could this have been prevented? 1 BIOL 2259, Learning Activity A 25‐year‐old male was admitted to the hospital with thrush (yeast infection in the
mouth), diarrhea, unexplained weight loss and difficulty in breathing. Cultures of
pulmonary fluid revealed the presence of Pneumocystis jiroveci. The man admitted
to being a heroin addict and to sharing needles in a “shooting gallery.”
a. What laboratory tests could confirm a diagnosis of AIDS? b. How did the man most likely acquire an HIV infection? c. What changes to the man’s immune system allowed the opportunistic infections
of Candida (thrush) and Pneumocystis to arise? 2...
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- Fall '13