![]() |
|
|||
|
|
|
|
|
|
|
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 |
#1
|
|||
|
|||
![]()
What does it mean by "contraction alkalosis"
Specifically in Cystic fibrosis would be helpful. |
#2
|
||||
|
||||
![]()
Cystic fibrosis pts are prone to excessive fluid loss while exercising cause Cl in their sweat cant be absorbed which attracts Na and water and cause dumping of lot of electrolytes and water in sweat resulting in dehydration.
In response to that kidney (PCT) absorbs more HCO3 than usual causing contraction alkalosis
__________________
Everything is possible for him who believes (MARK 9:23) 245/247/passed on 1st attempt/223/2mos Obsie /3 US LORS/visa not needed/2008 grad |
The above post was thanked by: | ||
jawbreaker13o (07-09-2015) |
#3
|
||||
|
||||
![]()
Loss of significant amount (volume contraction) of HCO3 free and chloride containing fluid (sweat loss in CF patients) raises HCO3 in plasma, bicarb is now more than normal in small volume i.e it is dissolved in a smaller volume of fluid.
Volume contraction can be a cause of alkalosis too by activating RAAS: Volume contraction -> decreased BP -> activation of RAAS -> increased AT II -> increased/stimulated Na/H echange in PCT -> increased HCO3 reabsorption -> alkalosis, due to volume contraction, aka Contraction alkalosis.
__________________
If it doesn't challenge you, it doesn't change you... Last edited by MananaMD; 07-09-2015 at 11:08 AM. |
The above post was thanked by: | ||
![]() |
Thread Tools | Search this Thread |
Display Modes | |
|
![]() |
||||
Thread | Thread Starter | Forum | Replies | Last Post |
Is there a way to classify dural venous sinuses in the brain as "UPPER" and "LOWER"? | Thanosun | USMLE Step 2 CK Forum | 0 | 06-10-2015 09:07 AM |
""superrr""'love marriage problem soltuion baba ji+91 9592358265 | ramniwasbaba456 | General Topics Forum | 0 | 12-09-2014 03:08 AM |
is there is any differnce between kaplan step 2 ck "blue cover" and the "green cover" ? | match2016 | USMLE Step 2 CK Forum | 0 | 11-02-2014 11:31 AM |
I want to change my testing region from "Asia" to "India" | MBBS | ECFMG Forum | 9 | 05-02-2012 08:42 AM |
|