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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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nzmEye A adnsst ni fro lphhseiooPasp ,A2 nnugirt shhppdiilpsoo in the clle aernembm otin oarahdiccni sc.dai omrF r,eeht Emneyz B sastdn rof yygleooxnesaCc XC(O), ilhew nEzyem C tadsns fro ieya5en-gLsxop -O5.()L O5-L odeprcsu 5H-ETP,E whchi is urentd onti et.keislouner eneoLiureskt lyap a belduo erol in entsve ikel mts,aha abseuce they acesu otccohbiniorrscnotn sn(ee ni hsit ni)petat adn by tcigan sa cmhlaiec ntatcttsara fro mmarntfyliao elcs,l whose tatcyivi lilw ocles the iawary r.uehrft By olcgbnki XOC p(yslemuarb wiht na )ANSI,D ew leaev oerm fo the trtubseas cnhciadroia adci fro X5OL- to uyeaitmtll rvctone inot ri.enekuloest shTi is the ssaib rof amitat--tnsspleria,hnarion cwhih si yqtuerelfn tocisdeaas iwth asanl pysol.p tsraSm('e ta).dir

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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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