dehydration - USMLE Forums
USMLE Forums Logo
USMLE Forums         Your Reliable USMLE Online Community     Members     Posts
USMLE Articles
Go Back   USMLE Forums > USMLE Step 1 Forum

USMLE Step 1 Forum USMLE Step 1 Discussion Forum: Let's talk about anything related to USMLE Step 1 exam

Thread Tools Search this Thread Display Modes
Old 11-12-2016
USMLE Forums Scout
Steps History: Not yet
Posts: 41
Threads: 24
Thanked 5 Times in 5 Posts
Reputation: 15
Fire Thread dehydration

A 74-year-old male is brought to the ER with diarrhea and vomiting. The symptoms started 24 hours ago and he has been unable to take much fluid during this period of time. His mucous membranes are dry and his blood pressure is 90/60 mmHg. Which of the following changes in renal plasma flow (RPF), glomerular filtration rate (GFR) and filtration fraction (FF) do you expect most in this patient?
A. RPF ↓↓, GFR ↓, FF ↑
B. RPF ↓↓, GFR ↓, FF ↓
C. RPF ↓↓, GFR ↑, FF ↓
D. RPF ↓, GFR ↑, FF ↑
E. RPF ↑, GFR ↑, FF ↓

can someone please explain it to me. answer is A but how acc to my knowledge efferent arteriole constriction causes inc gfr and inc ff and dec rpf..
Reply With Quote Quick reply to this message


Quick Reply

Register Now

In order to be able to post messages on the USMLE Forums forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
User Name:
Please enter a password for your user account. Note that passwords are case-sensitive.
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:
Medical School
Choose "---" if you don't want to tell. AMG for US & Canadian medical schools. IMG for all other medical schools.
USMLE Steps History
What steps finished! Example: 1+CK+CS+3 = Passed Step 1, Step 2 CK, Step 2 CS, and Step 3.

Choose "---" if you don't want to tell.

Favorite USMLE Books
What USMLE books you really think are useful. Leave blank if you don't want to tell.
Where you live. Leave blank if you don't want to tell.


Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Similar Threads
Thread Thread Starter Forum Replies Last Post
Pediatric diarrhea cases w/ dehydration Heythere USMLE Step 2 CS Forum 2 10-05-2016 10:12 PM
Dehydration :NBME 2 Concept usmle2011 USMLE Step 2 CK Forum 3 11-29-2012 08:09 PM
How to manage child with gastroenteritis and dehydration? tyagee USMLE Step 2 CK Forum 4 08-09-2012 03:16 PM
Dehydration and Ambiguous Genitalia; Which Enzyme? Casandra USMLE Step 1 Forum 4 07-23-2012 02:14 AM
Dehydration in sickle cell disease? FSUSTC USMLE Step 2 CK Forum 8 12-21-2011 08:02 AM

Find Us on Facebook
Powered by vBulletin® Version 3.8.8
Copyright ©2000 - 2020, vBulletin Solutions, Inc.
vBulletin Security provided by vBSecurity v2.2.2 (Pro) - vBulletin Mods & Addons Copyright © 2020 DragonByte Technologies Ltd.

USMLE® & other trade marks belong to their respective owners, read full disclaimer
USMLE Forums created under Creative Commons 3.0 License. (2009-2019)