A 50-year-old woman checked in at the emergency department in a Maryland hospital in late August complaining of a high f

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A 50 Year Old Woman Checked In At The Emergency Department In A Maryland Hospital In Late August Complaining Of A High F 1 (55.12 KiB) Viewed 46 times

A 50 Year Old Woman Checked In At The Emergency Department In A Maryland Hospital In Late August Complaining Of A High F 2 (35.97 KiB) Viewed 46 times

A 50-year-old woman checked in at the emergency department in a Maryland hospital in late August complaining of a high fever with chills and headaches for the past five days. She also mentioned a decrease in appetite, nausea with vomiting, and diarrhea. Her temperature was 104°F and scleral icterus was noted. Laboratory findings suggested a possible hemolytic disease, and elevated liver enzymes and serum bilirubin were also found. When questioned about her recent travel history, she reported a trip to Spain and Portugal five months earlier. She acknowledged to live in a rural area of the northeastern United States and mentioned that her husband was diagnosed with Lyme disease one year earlier. She did not recall recent tick or mosquito bites. A blood smear of her is shown below. 123. 1. What parasite do you suspect? A. Babesia microti B. Ehrlichia chaffeensis C. Plasmodium falciparum D. Plasmodium knowlesi 10μm
2. Which primary characteristics are used to differentiate and identify this organism? A. Parasites lie in pairs at an acute angle. B. Ring forms always occur in pairs. C. Parasites occasionally lie as a tetrad in a Maltese cross formation. D. Answer choices A and C are correct. 3. How could the patient have acquired this infection? A. Amblyomma americanum (tick) B. Ixodes dammini (tick) C. Anopheles spp. (mosquito) D. Culex spp. (mosquito) 4. All of the following methods are used in order to diagnose this parasite EXCEPT A. automated differential counting instruments. B. Giemsa-stained blood films. C. immunologic/PCR methods. D. the quantitative buffy coat (QBC) method.