share email twitter ⋅ join discord whatsapp(2ck)
free120  nbme24  nbme23  nbme22  nbme21  nbme20  nbme19  nbme18  nbme17  nbme16  nbme15  nbme13 

NBME 18 Answers

nbme18/Block 1/Question#43 (14.5 difficulty score)
18 yo man cracked lips and sunburned skin
BarrierπŸ”
tags:

Login to comment/vote.


 +4 
submitted by suckitnbme(168),

Not very clear, but petrolatum aka petroleum jelly is used as a barrier so stuff doesn't get into the wound when the skin is compromised. This helps with anti-microbial defense and wound repair.

https://www.jacionline.org/article/S0091-6749(15)01194-X/fulltext


Sweet question NBME, asking how Vaseline helps chapped lips. Always sticking to the important topics. That being said, the question is pretty easy, so thanks.

+3/- azibird(162),


 +1 
submitted by focus(27),

Petrolatum is a compound found in sunscreen.

He started working outdoors AKA getting sunburns (if left unprotected, lower lips are one of the prime locations where people can develop squamous cell cancer later on). He should really use sunscreen, which is a barrier (absorbs the UV rays so the skin does not-- rather than deflecting the sun rays.)