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Retired NBME 21 Answers

nbme21/Block 1/Question#37 (reveal difficulty score)
A 35-year-old man with diabetic ketoacidosis ...
Serum potassium concentration ๐Ÿ” / ๐Ÿ“บ / ๐ŸŒณ / ๐Ÿ“–
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submitted by โˆ—an_improved_me(91)
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e@lcckfebfa;o

nIuilsn sedo yalp a rleo ni ignnbrgi akcb +K tion clesl avi mouioaldtn of /HK++ ge.exncah ihsT is sueebca ti spehl to erdsdas eth oaieockctidt tesat fo eht tipa.tne yB gibnngri Hp eolrsc ot ae,bnlsie erthe si urentr of +K ntio hte llec,s lihwe +H scmoe bakc otu of hte lelsc.

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an_improved_me  ,weeHorv ouy rae tr,ihg in that too ym ,edwnoklge ttah si ont teh amni ayw inlsnui ecenlufsin +;K ti is mroe iva the saeaTPAN as you ehva tmeeo.nnid +1


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submitted by โˆ—nala_ula(127)
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nI bidactie ce,ksidsotaoi rhtee si rcdaisnee cida ni hte arelcuetllxar epsc.a ccinrAgod to FA eetrh si a ulatrllrcsane ihtsf ued to reecdsead unsinil htat lsade ot eorm H+ gnetnire the elcl in enegxahc rof .+K hsiT elasd ot rpalmkeayhei twih eledpetd lcrallaneruit troses of .K+ heTer si loas ocisomt irsiseud ttha ldaes to nicsdaere K+ olss in het enuri nda taotl bdoy +K .eetodnipl eTh utseqoni sask ahtt is tsmo llekyi ot csrdeaee twih nsuilni ehyrta:p rsemu smpaotius onttenciaonrc wlil eedsecar as +K si won ahgcenxed ofr H+ edsini het ll.ce

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cienfuegos  ltndAdiaio UW ufn facts girdgnear isosaPtum adn sKuADe : onicuat vggiin lsunini and VI idlsuf ot hrdyeddeta giclmyeercyph euacbes i oesfcr K ni cslle gunasci tfas reaceesd of lxurercataell it,sosPaum suht iveg K lptmpesetainnuo neev hnew umsre K eltavede +3
linwanrun1357  yhW renui K+ sdeo otn ?aescdeer +3

This explanation is faulty. Insulin causes K to go inside via upregulating NaKATPase activity. Nothing to with H+ exchange as far as Insulin is concerned.

H and K exchange is separate from this.


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submitted by โˆ—peachespeaches(2)
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I gaeer hatt mSure K sceedear is the ettbre s,rawen tbu 'wdolunt Urine K asol eacsdeer oenc olodb gaurs eosg odwn ihtw siulnni rttnatmee (e.i. cotoism uerdssii duolw sn)ele?s

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