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Retired NBME 23 Answers

nbme23/Block 1/Question#18 (reveal difficulty score)
A 15-year-old boy has nasal polyps and ...
Enzyme B ๐Ÿ” / ๐Ÿ“บ / ๐ŸŒณ / ๐Ÿ“–
tags: biochem pathways 35

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submitted by โˆ—sajaqua1(607)
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zEyemn A sdatsn ni rfo psoaPopiheslh 2A, nirtnug osiihlppdohsp in het lcel eemmanrb noti iaiaronchcd cia.sd omFr h,erte menzyE B tsdsan for xegaynClsyoeco CO,()X weihl Eznmey C dastsn fro -xeLnaiype5gso OL.-)5( -OL5 sdureocp -E5TPH,E wchih si tenudr inot uensirot.elke ioLtkrneeuse ypal a obedul lreo ni evtsne keil hsmat,a eusbaec yeth usaec ncncntohoriobiotsrc en(es ni htis tt)npeia nda yb tcangi sa imleccha attaactnrst for trnmaoiylafm cl,sle swoeh tiacityv liwl oelsc eht arwyai fr.ethur yB ogicklnb COX s(lbpeuarym with an D,ANS)I ew avele more fo teh tatbusrse canarhociid acdi rof -XL5O ot uayltlitme cvtoern iton kiueote.ersln hsiT si the sbsai rof aatel-mtraanitnri,-npohssi chiwh is tnereulqfy sctiseadoa with asnal op.yspl 's(temarS rt)ida.

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D) ytniolcaPrcs nasetysh . E) Teoxnhrmoab yetssanh

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FA 2019 pg. 475 on aspirin - + NSAID that irreversibly inhibits both COX-1 and COX-1 by covalent acetylation--> decreased synthesis of TXA2 and PG. + S/E: gastric ulceration, tinnitus (CN8), allergic rxn (especially in patients with asthma or nasal polyps). chronic use can lead to AKI, AIN, GI bleeding.


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