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NBME 20 Answers

nbme20/Block 4/Question#29 (27.3 difficulty score)
A 15-year-old girl is brought to the ...
DoxycyclineπŸ”
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 +8 
submitted by breis(44),
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ynoxDycciel si a ncciayTeretl nbdsi( 30s uu)nsitb dan si edsu off aellb rfo amtetenrt fo cA.ne anC cusea rioacontlsiod fo h,ttee nad si knnow to be TPOISIVNS.EEHOT

isTh eapntit dha seiuffd rehatemy adn lmdi deema voer hre cefa dna etsxi,etemri tmos ylklei form snu uesperox hwlei nigbe no het dme rof An.ec

AF 2:901 pg 291


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.

+2/- lilyo(69),


 +1 
submitted by hayayah(1057),
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nA edresva fecetf fo nydcyiolexc si itvshopye.tntiois

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 +3  



 +0 
submitted by lilyo(69),
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sTcaeeytinlcr osmt omcomn esveadr cefetfs are d/ahnisaaueitreomvr/a dna to.yishitsvntoipe anC fafect nbsoe adn tteeh of oerbnnw fi ivnge to ntranepg .women oslA tish ugrd slacs corvse SA,G BSG, -+/ AMR,S ryarposirte arlfo dna llrnae.uclrita

Why Criop is otn eth :ernasw Madlieocr cesrov RNG + P,soued hreeforte ton a mtrenatet ofr cean in(sk roa)fl. dnA mcmnoo everdas ffcetes are fCi.fD oifcei,nnt TQ poniortlona,g tdnneo trepuru, tgaentceior tefs.fce




 -2 
submitted by drdoom(819),
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