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NBME 15 Answers

nbme15/Block 4/Question#47 (2.8 difficulty score)
A 31-year-old woman is treated for Plasmodium ...
Primaquine kills hypnozoites🔍
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submitted by cassdawg(548),

Chloroquine does not adequately kill the dormant liver form of malaria (hypnozoite), and thus for infections that have a hypnozoite stage treatment requires addition of primaquine (which does adequately kill hypnozoites) to prevent relapse from release of the infection back into the blood. [FA2020 p157]

Hypnozoites are the dormant form of malaria in the liver (think hypno as in sleeping from hypnosis). Plasmodium vivax and ovale have the hypnozoite stage and thus require the addition of primaquine.

cheesetouch  FA2018 p157 too :) +