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Ist thought drug - drforget - Printable Version +- USMLE Forum - Largest USMLE Community (https://www.usmleforum.com) +-- Forum: USMLE Forum (https://www.usmleforum.com/forumdisplay.php?fid=1) +--- Forum: Step 1 (https://www.usmleforum.com/forumdisplay.php?fid=2) +--- Thread: Ist thought drug - drforget (/showthread.php?tid=669545) Pages:
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Ist thought drug - drforget - ArchivalUser - 04-05-2012 patient, with blurred vision, returned from Africa, seeing halos around lights at night, has itching while showering, O/E: the is corneal deposits, and bilateral diminished in visual acuity and retinal edema, lab shows leukopenia, normal CXR what drug cause the findings with mechanism of action??? 0 - ArchivalUser - 04-05-2012 bro spare us some brain cells.... give us some options lol this is a difficult question! 0 - ArchivalUser - 04-05-2012 okay: a Digoxin b cephalosporin c chloroquine d steroids e alcohol 0 - ArchivalUser - 04-05-2012 He must've have been given Chloroquine in Africa. This is toxic becuase it breaks hemoglobin and separates out heme inside the parasite-ridden cell. this heme breaks into Fe- Protoporphrin IX ( FP ) . This forms a complex with chloroquine FP-chloroquine, which is highly toxic to cells and autodigests it..Nice question. 0 - ArchivalUser - 04-05-2012 The parasite breaks down hemobglobin is what I mean,that forms the complex later with CQ ![]() 0 - ArchivalUser - 04-05-2012 yah im gonna go with C: chloroquine or could be A digioxin too 0 - ArchivalUser - 04-05-2012 answer is chloroquine toxicity which is responsible for the above findings: ![]() 0 - ArchivalUser - 04-05-2012 thank you and i pray that u never write a single question for step thanks ![]() 0 - ArchivalUser - 04-05-2012 no digoxin is not associated with leukopenia or normal CXR, patient with Heart failure treated with Digoxin will not going to have normal CXR. 0 - ArchivalUser - 04-05-2012 oh true true ... thank you |