share email twitter ⋅ join discord whatsapp(2ck)
Free 120  NBME 24  NBME 23  NBME 22  NBME 21  NBME 20  NBME 19  NBME 18  NBME 17  NBME 16  NBME 15  NBME 13 
introducing : the “predict me” score predictor NEW!
Welcome to notadoctor’s page.
Contributor score: 159

Comments ...

 +8  (nbme23#30)
unscramble the site ⋅ remove ads ⋅ become a member ($39/month)

ELS is edcstisaao with ficenyceid of elyra nmetemlopc .rogtis(pene 1,qC 4,C .2C) A(F 91, pg. 2)64

tinydoc  Am I the only one who has never heard of C1Q? +27
llamastep1  I knew SLE is related to low complement but when it talked about a "mutation" it threw me off. +1

 +3  (nbme23#47)
unscramble the site ⋅ remove ads ⋅ become a member ($39/month)

gicordcAn ot jolG,an echlomayitpy vrea si oen of the sotm ocnmom aecuss of rddBiuh-aCi s.meyrnod cgciAondr ot ,AF adruCii-dBh si sidacesota mero laenegrly ithw arlhcabgpuolyee ta,sets yomaehtlpcyi ave,r srtaotmupp tsseta, and HC.C

aceiHpt srhicisor can be erlud tuo bdsae no eth ietm eoursc of hte asp'eitnt nirottseaepn - he was enfi 2 wseke aog adn eth omndlaabi naip reatstd na ruho .goa

krewfoo99  Also in cirrhosis, the liver wont be enlarged or tender on palpation +1
almondbreeze  @krewfoo99 Good job. accoring to FA2019 pg.368, congestive liver disease (hepatomegaly, ascites, varices, abdominal pain, liver failiure) seems to be the key in Budd-Chiari SD +2

 +7  (nbme23#20)
unscramble the site ⋅ remove ads ⋅ become a member ($39/month)

rmeeembR on glystiooh Hs'tooashmi idorhitytis hsa two istdticn sereftua rlütHhe lihehc(wslc are oisoielhpnci esittplamca llesc atht leni olecllfis) dna oldpiyhm ggteeasgar wthi negilamr e(prsetcn..g 3,83 FA 9)012 The cerrtoc sweran csisebrde het taretl aeeutrf fo sH.sathim'oo

 +0  (nbme23#39)
unscramble the site ⋅ remove ads ⋅ become a member ($39/month)

lCciea perus is a niltmaoasborp osmynrde htta etssurl ni ehrarottase and lrsseut ni onir decyicinef iaa.nem As far sa 'Im aaewr, enno fo teh oteshr sutlre ni oinr yificdcene maniae. I( dah tclaiarBe howgvoterr as a cosel cnsdeo btu I no'td beeliev st'ath stcseodaia htiw onri inei.y)cfecd

yb_26  bacterial overgrowth is associated with iron deficiency, but also with Vit B12-deficiency, so I guess pts will have macrocytic anemia +3
nor16 Vit B12 is key here, moreover, no bloating (IBS and bacterial overgrowth with bloating). bacterial overgrowth is a close one! +1
covid2019  I wrongly chose bacterial overgrowth, but that is wrong because Small Intestine Bacterial Overgrowth (SIBO) must be instigated by something. Commonly, anatomic abnormalities (like surgery causing blind loop syndrome, strictures, or motility disorders that allow the poop to ~fester~). +3

 +7  (nbme23#4)
unscramble the site ⋅ remove ads ⋅ become a member ($39/month)

Teh ifinitnoed fo acMDeio-ksingni Caaiptcy gdoincrca to BB+ si biatyli to rcmpoheend mitooiafnnr uboat ensllis dan nmteertta tonosip adn akme cicehos ni enipgek iwht leapnosr valseu.

notadoctor  The decision must also remain stable over time, which is the "consistent values" part of the answer. +20

 +2  (nbme23#45)
unscramble the site ⋅ remove ads ⋅ become a member ($39/month)

Iev' bnee ngeracshi rof my ocresu rof tihs btu 'tcan mese to fdni .it wrveHeo, teh awy I tuoghth botau it asw ttha aedem pasenph vai the serlia.alcpi fI htree si arescidne sstacereni iav hte plapciraeylr itesncprsh as mhcu loobd udltonw' eb bael ot etg otni eth aple.iaislcr ehT blood owdlu ntaseid get tnsdueh vai seoaatssmon ot eth s.evin hsiT ceiralt orfm coglimvohpyocy.s anxslepi it a tilelt brtee:t CV o:shoPyilgy sieTus Eadme adn areelGn rispneliPc of slnTacipalrary luFid Exaghnce

 +0  (nbme21#6)
unscramble the site ⋅ remove ads ⋅ become a member ($39/month)

sThi teuiqsno aws skinag uobat the redsave eseffct fo oprnto mupp iboisithrn elalcipsye inegv ouvpirse deyikn ies.uss PIPs csreeeda rsemu gM nad smeur aC oorstpabin nda acn snecriae het srki of rcerftau lye(ilsecpa in teh dlee)rl.y

yotsubato  PPI therapy *begins* the day she presents. She has not taken PPI before +15
notadoctor  You're right, I missed that! +
naught  MEN 1 is pituitary (monitor cortisol), pancreas, parathyroid (monitor calcium) but is not the ask of this question. +

 +15  (nbme21#36)
unscramble the site ⋅ remove ads ⋅ become a member ($39/month)

fI yuo were ustck eebenwt hrCadoailsm(tcnomn)aaongr nad )(hnnbmirocnodeEnag rebmmeer dohrcosnnmae may orede eth xetcor ubt nac nvere veuiaripsd/dnt eth xoe.rtc I kihtn hsit wsa het tnitdoncsii hte qneitous saw .etnigts

an_improved_me  Also: Enchondromas are most common in young males (liek 20s) whereas chondrosarcoma are most commin in middle aged men (esp. hips) +

 +31  (nbme21#32)
unscramble the site ⋅ remove ads ⋅ become a member ($39/month)

slUau tsitaieirltn noeitumspin si het icioaslgthol fnitdnoiie fo Ipahtodici lupaynorm fsii.obsr We onkw hatt isth tipaent has manouyrpl bosifris buaesec teh itoqseun ttsase htat eehrt si obfisur ngkitnchei fo the alarovel epas.t hTsi sneituoq saw utjs nsitgte ttah ew ekwn teh treoh measn ofr malnyoruP ssF.broii

aneurysmclip  Nbme back at it again +27
pg32  Is it still considered idiopathic pulmonary fibrosis is it appears to have been caused by an atypical pneumonia? +1
zevvyt  Why not Sarcoidosis? Wouldn't Sarcodosis also be a chronic inflamation with fibrous thickening? +2
swagcabana  UIP is a better answer. Sarcoid is a leap in logic, usual interstitial pneumonitis is textbook histological definition of idiopathic pulmonary fibrosis. The biopsy has no mention of noncaseating granulomas and the clinical picture is not consistent with an inflammatory process. You have to focus on the better answers, try not to get caught up in the "why nots?" Calling this sarcoidosis is like someone coming in with prototypical asthma and jumping to eosinophilic granulomatous with polyangiitis. Sure its a possibility but its definitely not likely. +6
mangotango  I picked “diffuse alveolar damage” with Pulmonary Fibrosis in mind but these are actually key words for ARDS :/ +3
zevvyt  thank you swagcabana! Very good explanation and strategy! +

 +9  (nbme22#27)
unscramble the site ⋅ remove ads ⋅ become a member ($39/month)

tcisaaMett idesesa is eorm ommcon than piramyr onbe tumrs.o

lba9587  Might be helpful to consider eg. of a lung tumor. one lesion? you’re leaning lung primary. Multiple lesions in lung? METS. Q stem here included, “numerous lytic lesions along the vertebral column.” Thus, METS. +
jurrutia  Also, pain that is worse at nights and persists regardless of activity. Paget's is typically asymptomatic (although pain is the most common symptom) and would have other findings (deformities, AV shunts, etc.) +
jurrutia  Also, pain that is worse at nights and persists regardless of activity. Paget's is typically asymptomatic (although pain is the most common symptom) and would have other findings (deformities, AV shunts, etc.) +

 +10  (nbme20#29)
unscramble the site ⋅ remove ads ⋅ become a member ($39/month)

aiysAnls of het tleaisn ni het iqseonut esdwho a csdrdeeae rbumen of snsioemed .nlscr-iossk msoeesDni si adme pu fo ruof enylsi us.erdsei orThreeef nmaablro tsliane si liylke smgiins nlesyi cenayesrs rof the tomfiorna of eshet deemsosni s.kissrcno-l iaidiWepk tceairl on sieDoesmn.

dbg  how can i trust you, you aint even a doctor +22
euchromatin69  trust this then U.W 1249 +3
tryntofigritout  UW 1249 was perfect. #loveyourname euchromatin ha +

Subcomments ...

submitted by lsmarshall(417),
unscramble the site ⋅ remove ads ⋅ become a member ($39/month)

rUae ylceC ieorsdrsD ;> dsetIalo vseere mrmnyheopeimaa t;(g& 0;001 e.i,. no oreth versee eimcobtla ubasenrdtcsi

ertnniOih steamcaanarybrsl cicfeeiydn g;t& somt( mnmcoo eaur eccyl si.)d octori ieuadamrdi/icciaa, ymeompmeirnaha

cgOirna icsedAmia &;gt mmira,eemaHnypo ngp-ainao aidsoi,sc stkeosi mrfo( eygyhli)ompac

diMhemia-unc o-cyalCA hreeoesdndyag eyndciifce g;t& iypemomma,Hanre oyckpitohet yceolmhpyagi ene(s in xa-iβnitdoo si,srodred PTXECE oyryrdtpkodhsnueaeol)

viLer cninfuyodts ;g&t arnepHmommy,aie LTFs deemss ,pu eldor pt.

lsmarshall  Summary of metabolic issues relating to hyperammonemia +8  
seagull  i'm leaning towards Ornithine transcarbamylase deficiency. +3  
notadoctor  Not sure why this isn't considered a mitochondrial disorder since the issue is Ornithine transcarbamylase deficiency in the mitochondria? +2  
charcot_bouchard  if it was mitochondrial disorder no one would escape +3  
wowo  figure in OTC deficiency, they might have to explicitly mention the orotic aciduria AND typically presents earlier, around 24-48hrs of life after they've fed (at least per BB) + also per BB, propionic acidemia and MM acidemia have an onset of weeks to months and lead to build up of organic acids --> acidemia in addition to hyperammonemia (not sure why, but several aa enter the TCA cycle via propionyl CoA --> methylmalonyl CoA --> succinyl CoA, but now this is defunct d/t enzyme deficiencies...?). Anywho, propionic acidemia described on FA2019 p85, but doesn't list hyperammonemia +2  
artist90  i think it cannot be Ornithine transcarbamylase deficiency bc it is XR disease. this pt has a healthy 2yr old brother which rules out X-linked recessive disease correct me if i m wrong +4  
artist90  it is 100% Propionic acidemia Uworld Q-id: 1340. it is an exact copy question of uworld. i got it wrong bc i forgot these are organic acids. But i am still confused on 2 things 1-how does acidosis cause Hypoglycemia and Ketosis. 2-why is Ammonia elevated in these pts bc urea cycle will be fine? +  
yb_26  1) hyperammonemia is seen in all urea cycle disorders except arginase deficiency 2) organic acids directly inhibit urea cycle => hyperammonemia (from UWorld) +1  
yex  According to UW, there is another question # 1341. This one refers to methylmalonic acidemia (ORGANIC ACIDEMIA). HYPOGLYCEMIA results from overall increased metabolic rate leading to increased glucose utilization and direct toxic (-) of gluconeogenesis by organic acids. The presence of hypoglycemia leads to increased free fatty acid metabolism that produces KETONES, resulting in a further anion gap met acidocis. Finally, organic acids also directly (-) the urea cycle, leading to HYPERAMMONEMIA. +11  

submitted by sajaqua1(535),
unscramble the site ⋅ remove ads ⋅ become a member ($39/month)

icyeosnam,tGa speird nag,tiaoam nad ygsonhdaiopm a(s lwle sa alamrp e)mhertay rae lla gissn fo eessxc egnosre.t Teh lvire in nisteapt whit pctieha dsiseea is repdiaim nda os otcnan reacl egntesro fuse.ilytcnif ixS 12 zo esreb yadil (72 zo, ro fhla a aol)gln si oot ,ucmh and si ogytndsrie sih .rveil

uslme123  No hepatosplenomegaly, ascites, or edema through me off. We that being said, I shied away from cirrhosis. I thought that he showed signed of depression, so I went with the thyroid. But who's to say he isn't injection anabolic steroids?! +6  
catch-22  The principle is you can get liver dysfunction without having HSM, ascites, etc. Liver disease is on a progressive spectrum. +12  
notadoctor  He likely has hepatitis B/C given his history of intravenous drug use. I believe both can have liver dysfunction but may or may not have ascites, whereas the type of damage we would expect from alcohol that would match this presentation would also show ascites. +  
charcot_bouchard  For Ascities u need to have portal HTN. Thats a must. (unless exudative cause like Malignancy) +2  
paulkarr  For anyone who needs it; the FA photo is kinda burned into my mind for these questions. NBME has some weird infatuation with this clinical presentation.. FA (2019) Pg: 383 "Cirrhosis and Portal HTN". +4  
snripper  @paulkarr the problem was that the FA image was burned into my mind so without no ascites or edema threw me off of cirrhosis. +  
tyrionwill  cirrhosis doesn't present hepatomegaly, instead, the liver could be shrunken. +1  
avocadotoast  Cirrhosis (most likely due to alcoholism in this patient) leads to an increase in sex hormone binding globulin, causing a relative increase in estrogen compared to androgens. Cirrhosis doesn't always have to present with ascites and adema. I agree with @catch-22 that liver disease is a spectrum. This patient does not have ascites because his liver is still able to produce enough albumin to maintain oncotic pressure in the blood. +1  

submitted by notadoctor(159),
unscramble the site ⋅ remove ads ⋅ become a member ($39/month)

sTih inuqteso saw kignas baout the drevase fefsect of tnopor pmup irnhotsbii lsealcieyp iegnv ospueirv eydnik ies.uss IPsP sadreeec emusr gM adn surem Ca osianbortp nad cna ecraiesn eth ikrs of rerfatcu csl(leepyai in hte ele.)lydr

yotsubato  PPI therapy *begins* the day she presents. She has not taken PPI before +15  
notadoctor  You're right, I missed that! +  
naught  MEN 1 is pituitary (monitor cortisol), pancreas, parathyroid (monitor calcium) but is not the ask of this question. +  

submitted by brolycow(27),
unscramble the site ⋅ remove ads ⋅ become a member ($39/month)

eH ash thrae arilufe chwih selda to a eresdaec in lnear odblo wolf nda rneaerlp e.oamiatz nI lnrrapee za,mitoea :CUrBN raoit is ;g=t& 2;0 taAcviiotn fo eht ARSA esstym eud ot eht eanplerr ozteiaam easnm that hte scep gvar is ighh at 2.501 and he si dolnhig noto umsiod os rnrauyi idoums wlil be owl ,0l2(&t; NaEF .lt1)%;&

figprincess  did you figure out the the ratio by actually divding out the numbers since the q didn't give it as a ratio? also what resource tells us what prerenal spec gravity should be? +  
brolycow  I just usually remember from class that spec grav 1.001-1.010 is considered dilute urine, and anything 1.025 and above is concentrated. For this question specifically, I think I remember there only being one option that even had the ratio >=20, all of the others were like 15 or less, so just have to rule them out. +7  
benzjonez  Very helpful video for acute kidney injury: +8  
notadoctor  Another explanation that helped me is that inability to concentrate the urine means something is wrong with the kidneys. If you have dilute urine, or the spec gravity is between 1.001-1.010 in someone with low urine output it suggests something is wrong with the concentration mechanisms of the kidney. Because this person had congestive heart failure we were already looking for something that matched up with prerenal azotemia so we can pretty much get rid of all the answer choices that suggest other azotemias. Then finally to get the precise answer I looked at the BUN/Cr ratio which you would expect to be high(>= 20). +  
mikay92  Would fully recommend the OnlineMedEd video on AKI. Goes through the differential, lab results, treatment, etc in a very clear and concise manner. +  
drdoom  repost via @benzjonez -> +  
drdoom  @mikay92 is this the OnlineMedEd video you're referring to? -> +1  
drdoom  aha! there is an updated AKI video but you need an OnlineMedEd (free) account to view it: +  
popofo  I understand that BUN:Cr > 20 if renal perfusion is repaired, but in heart failure wouldn't there be increased secretion of ANP/BNP from the atria that pushes up the sodium excretion? +  

submitted by mousie(220),
unscramble the site ⋅ remove ads ⋅ become a member ($39/month)

Can oeeomns saleep xnilpea hsit ot ?me I dnt'o nntdudrsea yhw rntitgas the throe ugrd wulod not ntocu sa lcnxiosue icrre?tai

seagull  This has to do with Intention-to-treat analysis. Essentially, when participants are non-adherent but the data shouldn't be lost. They just undergo another statistical model to account for their changes. Here is a nice video +22  
dr.xx  Where does the question mention "intention-to-treat"? +  
notadoctor  They seem to be pretty obsessed with "intention-to-treat" it's been asked in one way or another in all the new NBMEs that I've done. (Haven't done 24 as yet) +8  
wutuwantbruv  They don't, intention-to-treat is just the best way to go about it @dr.xx +  
smc213  Great for ITT: +4  
yex  I agree with @notadoctor !! +  
ergogenic22  i think if it were per protocol, both groups would be excluded, the ones that were inconsistent, the ones that dropped out, and the ones that switched. But answer choices only allow ITT or exclusion of one group. +  

submitted by notadoctor(159),
unscramble the site ⋅ remove ads ⋅ become a member ($39/month)

heT feiionidtn of sgDk-ciennaMoii cpCataiy irdgccaon ot B+B si tilyiab ot orcdmenehp ifrotnnamoi obuta iessnll dna attmetern pinotos and emka chiceso in enikpge tihw oenprasl valsue.

notadoctor  The decision must also remain stable over time, which is the "consistent values" part of the answer. +20  

unscramble the site ⋅ remove ads ⋅ become a member ($39/month)

whit PTC ouy are dspuoeps to vdoia exsvceeis uthsglni dna UV x.puresoe eMhnasoxetl kmsea ruoy sikn mreo uscitbpeesl ot VU .tligh

notadoctor  Wouldn't UV light also be contraindicated in Vitiligo? +5  
sweetmed  Phototherapy with photochemotherapy (PUVA) is a well-known and well-studied modality for the treatment of psoriasis, which involves systemic or topical administration of chemicals known as psoralens and administration of ultraviolet light in increasing dosages after requisite time gap. PUVA is also used in the treatment of widespread vitiligo with moderately good results, though it is being surpassed by ultraviolet B (UVB), which is equally or slightly more efficacious with fewer side effects. +8  
dashou19  Honestly, I didn't even know what Methoxsalen is, just chose the right answer because I know you can not give UV light to people with PCT... +11  
sarahs  what about tcell lymphoma which also has cutaneous lesions? +  
shieldmaiden  @notadoctor UVB from the sun is contraindicated. PUVA is actually used for vitiligo therapy +  

submitted by sklawpirt(30),
unscramble the site ⋅ remove ads ⋅ become a member ($39/month)

I nikht het iade eerh is ymlisp tath neo dohuls tkhin otuba ewhre cisselev ear ocnimg rmof no thire yaw ot teh ogilg exmolp.c

wo"T petss rfwdrao adn eno ptes "kc.ab iayfeccllpS hte nueoiqts amy eb rnrgefrei to a erra icanocafrlia .ideosrdr an rswasnasee fo htat sidasee si tno sasnece.yr aWth si earsysecn si irtgudnnsedna het roigni rmfo eerhw ecivless rea dkfrateic to eth oglGi ppatra.sau

IOPC iprnteo is ndedee to oatc cssleve from teh RER ot sden to .ogilg Ts,hu itwh a utnomati in htta n,ertpoi eht edkpacga ptneiors atht oldsuh belb fof and eb tsen to eht glio,g tesdina caltuueamc in eth RRE adn dtalie ti. shuT the esarwn.


hayayah  pg. 47 on FA got the good visuals! +5  
notadoctor  COPII* proteins are needed to coat vesicles from the RER to Golgi. "Two(COPII) steps forward; one(COPI) step back." Anterograde goes RER -> Golgi -> Lysosomes/Secretory Vesicles -> Plasma membrane +23  
titanesxvi  why not small lysosomes? +3  
varunmehru  and I thought large lysosomes due to lack of enzymes to degrade +  
samsam3711  The size of the lysosome is not affected by the presence or absence of protein, but its function is compromised (eg. protein is getting stuck in the RER) +  
fattyacid  I hope this helps to whomever was lost like me Null mutation: A mutation (a change) in a gene that leads to its not being transcribed into RNA and/or translated into a functional protein product. For example, a null mutation in a gene that usually encodes a specific enzyme leads to the production of a nonfunctional enzyme or no enzyme at all. +2  
pingra  I think you made a typo: COPII (RER -> cis-Golgi); COPI (trans-golgi -> cis-golgi and cis-golgi -> RER), clathrin (endocytosis and trans-golgi -> lysosome) +  
kevin  So my thought process was if there is no COP signal then instead of going to Golgi it would be sent astray into cytoplasm, akin to how in I-cell Dx the enzymes get sent out of the cell since there is no trafficking signal (therefore I presumed large lysosome due to eating the aggregated protein). Are we saying without COP or Clathrin that the vesicle will simply stay put where it is? If I can get a reply before my exam (2 weeks) that'd be much appreciated +1  

submitted by mcl(601),
unscramble the site ⋅ remove ads ⋅ become a member ($39/month)

ttanPei amy avhe adretihyer gaidanmeo,e chihw is itesocdasa thwi ecr"trurne aacttks of in,eetsn ev,smisa llcieoazd oenussactubu mdaee vlgnivoin hte ,seeximetitr ltaiina,ge ec,fa or ku,rnt or lsuasuobcm meade of perup aiwayr ro lwbo"s.e eTh ealcrit egso no to yas "ss1eareCe-t brtniohii ksrow erlidtyc on teh pnecmlmote adn tcnacot aalmsp sscdaeca to uedrec narykbdiin reelaes" cwihh si saol aroplbyb godo ot kwno.


notadoctor  Thought this was a trick question as C1 esterase deficiency also results in a decrease in C4. However, the second answer choice was not referring to C4 but to C4 binding protein, which I now know is different. I also didn't realize C1 esterase was technically a complement protein. +4  
youssefa  Based on many sources hereditary angioedema does NOT cause a rash (urticaria) which is a main differentiating point between angioedema and allergy. This mislead me in this question. Any clarification? +22  
ergogenic22  +1 on the above because uptodate states that c1 esterase inhibitor deficiency, both acquired and nonhereditary, are both non-urticarial, non-pruritic, and that is confirmed by the above linked article +2  
sahusema  Question writer probably didn't know the difference between cutaneous urticaria and subcutaneous edema. +3  
almondbreeze  same. got it wrong bc the pt didn't have sx of hereditary angioedema - swollen lips and eyelids +2  
teepot123  fa 19 pg 107 +  
beloved_bet  According to Amboss "Mast cell-mediated angioedema Often associated with urticaria and pruritus Other associated with clinical findings of allergic reactions (see type 1 hypersensitivity reaction) Presents within 30 minutes to 2 hours after exposure and resolves over hours to days" +1  

submitted by oznefu(22),
unscramble the site ⋅ remove ads ⋅ become a member ($39/month)

how od yuo rwarno ondw tath tssoenetoret iaedcesnr emgolnihob cncrn?oitatnoe jstu a mnrado catf ot ?konw i upt leiaakln seatapphhos cesebau i fiuedrg eascdenir norteesseott illw eesncria oneb ghwtor nad erlud uot ptpiaefoecsst-irc ninaget cb sti’ a wnma.o

hysitron  I guessed this one cause men have a higher hemoglobin than women. +10  
notadoctor  High levels of testosterone will result in amenorrhea. I guessed that since she's not menstruating she will not be losing blood and therefore hemoglobin. Therefore her hemoglobin levels will be higher than expected. +5  
meningitis  It kinda makes sense knowing testosterone causes catabolism so I was in between Alkaline phosphatase and hemoglobin... +1  
enbeemee  isn't testosterone anabolic? +4  
syoung07  ALK phosph is indicative of osteoclast activity. Testosterone keeps male bones strong just like estrogen does for women. Testosterone builds bone (osteoblast activity) therefore we would not see a rise in ALK phos +