cushing reaction? - 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 01-14-2013
USMLE Forums Addict
 
Steps History: 1+CK+CS+3
Posts: 109
Threads: 29
Thanked 20 Times in 13 Posts
Reputation: 30
Default cushing reaction?

can any body explain me the proper mechnism and wat occur in cushing reaction? i cannot understand it from first aid
Reply With Quote Quick reply to this message



  #2  
Old 01-14-2013
USMLE Forums Master
 
Steps History: 1+CK+CS
Posts: 634
Threads: 47
Thanked 324 Times in 162 Posts
Reputation: 335
Default

I'm assuming you're referring to the Cushings reflex.

Cushings reflex is where you have raised intra cranial pressure causing bradycardia, hypertension and irregular respiratory patterns.
Reply With Quote Quick reply to this message
  #3  
Old 01-15-2013
USMLE Forums Addict
 
Steps History: 1+CK+CS+3
Posts: 109
Threads: 29
Thanked 20 Times in 13 Posts
Reputation: 30
Default correction

sorry i wroke it wrong....i was asking abt cushing reflex..
Reply With Quote Quick reply to this message
 
  #4  
Old 01-15-2013
USMLE Forums Scout
 
Steps History: Step 1 Only
Posts: 31
Threads: 6
Thanked 14 Times in 10 Posts
Default

Quote:
Originally Posted by amresh kumar View Post
can any body explain me the proper mechnism and wat occur in cushing reaction? i cannot understand it from first aid
Cushing's triad (Hypertension, bradycardia and irregular respirations) is one of the classic sign for elevated intracranial pressure. Hypertension is due to maintain cerebral perfusion pressure ( Cerebral perfusion pressure= Mean arterial pressure- Intracranial pressure, when ICP increases cerebral perfusion must somehow maintained above 50 mm Hg). Bradycardia is a reflex response to hypertension and irregular respiration is caused by impaired brainstem function.
Reply With Quote Quick reply to this message
The above post was thanked by:
pathophysio (09-18-2016)
  #5  
Old 12-03-2016
USMLE Forums Newbie
 
Steps History: Not yet
Posts: 1
Threads: 0
Thanked 0 Times in 0 Posts
Reputation: 10
Default Cushing Rxn

response to inc. ICP -> dec.CNS blood flow -> accumulation of CO2 leads to inc. pCO2 in CNS -> CO2+H20=H2CO3=(HCO3-) + (H+) -> inc. pC02 and H+ stimulate central chemoreceptors that inc. vagal and sympathetic output simulataneously that causes inc.BP and falling pulse pressure.headache vomiting papilloedema.
H+=hydrogen ion
ICP=intracranial pressure
HCO3- =bicarbonate ion
pCO2=partial pressure of CO2
Reply With Quote Quick reply to this message



Reply

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
Diagnosis of Cushing Syndrome? iceman_purav USMLE Step 2 CK Forum 1 03-30-2012 07:00 AM
Best Initial test for Cushing syndrome? Kais_MD USMLE Step 2 CK Forum 13 11-20-2011 05:42 PM
Cushing Reaction/Response! evavar USMLE Step 1 Forum 1 06-08-2011 01:44 PM
How Cushing syndrome causes Pancreatitis? fernandbteich USMLE Step 1 Forum 4 05-15-2011 12:04 PM
diagnosis of cushing synd lookingup USMLE Step 2 CK Forum 1 04-26-2011 07:18 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)