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NBME 20 Answers

nbme20/Block 4/Question#29 (30.3 difficulty score)
A 15-year-old girl is brought to the ...
DoxycyclineπŸ”,πŸ“Ί
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 +8 
submitted by breis(53),
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oxelcnycyDi si a cTrnalcetyie i(dbns s30 ist)uubn and si sdeu off ealbl rof ttanmrete of cn.eA nCa uecsa looaoiitrncsd of ehet,t dna si woknn ot eb OES.IEITHPTOVSN

hisT tniepta adh eiusdff mrheeyta nad mdli daeem veor rhe ecaf dna etre,miiestx mots kyelli fmor usn orxsuepe hilew egbni on het mde ofr .cnAe

FA :2910 gp 912


Tetracyclines most common adverse effects are nausea/vomit/diarrhea and photosensitivity. Can affect bones and teeth of newborn if given to pregnant women. Also this drug class covers GAS, GBS, +/- MRSA, respiratory flora and intracellular.

Why Cipro is not the answer: Macrolide covers GNR + Pseudo, therefore not a treatment for acne (skin flora). And common adverse effects are C.Diff infection, QT prolongation, tendon rupture, teratogenic effects.

+4/- lilyo(78),


 +1 
submitted by hayayah(1100),
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An drvesea ctfefe of oxnycdliecy si tophtieytoisvnsi.

rio19111  Why not Cipro? +1  
raspushok  Which antibiotics increase photosensitivity? Several antibiotic classes commonly cause photosensitivity, including tetracyclines (doxycycline), quinolones (ciprofloxacin, norfloxacin), and sulphonamides (trimethoprim/sulfamethoxazole, sulfasalazine). The tetracycline minocycline is not generally associated with photosensitivity. WHY not damn cipro? +  
medninja  I think it is because Cipro is not commonly used for acne treatment +4  



 +0 
submitted by lilyo(78),
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siTatcrycelen sotm mmoocn evasrde sefecft era ie/esorhdnaruaaiav/mt adn iitsvnotpi.yotshe nCa fcfeat nobes adn ethet of noenrbw if nevgi ot ntageprn nwm.oe sAlo this drug ascls oesvcr G,SA ,SBG +/- MAR,S ritsyarrope arlof nda .lnutlcraareil

Why piroC is nto het rsneaw: iaedlrcoM oecrsv NGR + uedo,sP erfhoreet tno a etmentatr for ncae (sikn rl)af.o nAd nomocm seeavrd fsetcef are fDifC. entcofini, TQ agoonnrptiol, tnneod erpuurt, ntgceeotair tse.fefc




 -2 
submitted by drdoom(957),
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eetd[ld]e