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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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enmEyz A assdnt ni fro oihasploshePp ,2A tiurnng shpisiodlppho ni hte lcle aebmmenr oint daiincaohrc adsc.i roFm ,ereht nmzeyE B sdtsan rof Csoxycloeenyga O)XC,( heilw nzmEey C sdtnas fro gLsy5-onxeeipa ).5L-(O -5OL reoscpdu ,EETH5-P hwhic is rtndeu ntio ekeio.nsetrlu tLoinkesuree ypal a boedul oerl ni ensevt keli htmaas, cuasbee ethy saecu nooiicrtsrnhoctobnc ne(es ni htis tap)eitn dna yb ngcait as macieclh caratnattst rof ataimfrynmol clels, oeshw tiitcvya wlli elsoc het iawrya u.etfhrr yB gncoblki COX brmlapysue( ihwt na SNDI,A) we velae omer fo teh usbtertsa occrniaidah icda fro X5L-O to tyemultial nrvocte itno kotulsnre.eei hsiT si hte iasbs rof nnrmariihatt--e,iostsnapla whchi is relyeqftnu asatiscoed hwti lnaas ospl.py mt'srSe(a )trida.

.itewF9r/hleTt/glclkuot/exw5c./ms4wta:/ra5p93r

)D arnisctyPocl sthesnay . E) exTamnoohbr ahtsynse

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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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