Renal clearance graph from USMLE World! - USMLE Forums
USMLE Forums Logo
USMLE Forums         Your Reliable USMLE Online Community     Members     Posts
Home
USMLE Articles
USMLE News
USMLE Polls
USMLE Books
USMLE Apps
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


Reply
 
Thread Tools Search this Thread Display Modes
  #1  
Old 03-11-2011
USMLE Forums Scout
 
Steps History: Not yet
Posts: 59
Threads: 15
Thanked 30 Times in 19 Posts
Reputation: 40
Kidney Renal clearance graph from USMLE World!

Question ID: 1617

In one of the explanations they show the graph where Y axis is TF/P and X axis % distance along proximal tubule (the graph from renal section). Here, the creatinine line is lower than inulin. Is this a mistake? Shouldn't creatnine line be higher since a little is secreted?
Reply With Quote Quick reply to this message
The above post was thanked by:
cerebrum85 (03-12-2011)



  #2  
Old 03-11-2011
mary's Avatar
USMLE Forums Guru
 
Steps History: 1+CK+CS
Posts: 339
Threads: 12
Thanked 421 Times in 143 Posts
Reputation: 431
Default

What is TF/P ???
Reply With Quote Quick reply to this message
  #3  
Old 03-11-2011
USMLE Forums Scout
 
Steps History: Not yet
Posts: 59
Threads: 15
Thanked 30 Times in 19 Posts
Reputation: 40
Default

Quote:
Originally Posted by mary View Post
What is TF/P ???
Tubular fluid/ plasma ultrafiltrate
Reply With Quote Quick reply to this message
  #4  
Old 03-11-2011
mary's Avatar
USMLE Forums Guru
 
Steps History: 1+CK+CS
Posts: 339
Threads: 12
Thanked 421 Times in 143 Posts
Reputation: 431
Default

There's nothing higher than inulin in the graph you are refering to. Because inulin is completely filtered and nothing is reabosbed, it's equal to the total GFR.

Creatinine is not totally filtered and even after it's secreted, it's still less than inulin in the final urine ..
Reply With Quote Quick reply to this message
  #5  
Old 03-11-2011
USMLE Forums Scout
 
Steps History: Not yet
Posts: 59
Threads: 15
Thanked 30 Times in 19 Posts
Reputation: 40
Default

Quote:
Originally Posted by mary View Post
There's nothing higher than inulin in the graph you are refering to. Because inulin is completely filtered and nothing is reabosbed, it's equal to the total GFR.

Creatinine is not totally filtered and even after it's secreted, it's still less than inulin in the final urine ..
PAH is higher on the graph than inulin - which makes sense b/c after it is filtered, it is also secreted. Why doesn't this hold true for creatnine? On the graph in FA creatinine is higher than inulin which makes more sense to me than the graph in UW.
Reply With Quote Quick reply to this message



Reply

Tags
Physiology-, Renal-

Quick Reply
Message:
Options

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:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
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.
Location
Where you live. Leave blank if you don't want to tell.

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.



Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes


Similar Threads
Thread Thread Starter Forum Replies Last Post
Difference between Offline Usmle World and Online Usmle World noone_123i USMLE Step 1 Forum 15 06-01-2016 10:00 AM
creatinine clearance (CrCl) of 17 mL/min khushboo USMLE Step 1 Forum 4 11-20-2011 12:46 AM
Clearance/ GFR mnemonic heights USMLE Step 1 Mnemonics 1 08-17-2010 01:14 AM
Screening Test Accuracy on this graph? Kabutar111 USMLE Step 1 Forum 5 07-18-2010 05:21 PM
PAH clearance hippocampus USMLE Step 1 Forum 2 01-04-2010 05:01 AM

RSS Feed
Find Us on Facebook
vBulletin Security provided by vBSecurity v2.2.2 (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.

USMLE® & other trade marks belong to their respective owners, read full disclaimer
USMLE Forums created under Creative Commons 3.0 License. (2009-2014)