hypertrophic obstructive cardiomyopathy?? - 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 2 CK Forum

USMLE Step 2 CK Forum USMLE Step 2 CK Discussion Forum: Let's talk about anything related to USMLE Step 2 CK exam


Reply
 
Thread Tools Search this Thread Display Modes
  #1  
Old 04-01-2013
USMLE Forums Veteran
 
Steps History: Not yet
Posts: 213
Threads: 54
Thanked 53 Times in 41 Posts
Reputation: 63
Default hypertrophic obstructive cardiomyopathy??

Symptoms worsened by anything that increases heart rate, eg exercise, dehydration and diuretics.

Worsened by anything that decreases left ventricular chamber size eg acei, ARB, digoxin, hydralazine,valsalva and standing.

Anyone can help explaning this? Why it is worsened by decreasing left ventricular chamber size?dosent that make it worse?since hypertrophic means smaller ventricular chamber! Im confused..
Reply With Quote Quick reply to this message



  #2  
Old 04-01-2013
venky2600's Avatar
USMLE Forums Master
 
Steps History: 1+CK+CS+3
Posts: 1,186
Threads: 119
Thanked 817 Times in 434 Posts
Reputation: 827
Send a message via Yahoo to venky2600
Post

Quote:
Originally Posted by bigBOSSguy View Post
Symptoms worsened by anything that increases heart rate, eg exercise, dehydration and diuretics.

Worsened by anything that decreases left ventricular chamber size eg acei, ARB, digoxin, hydralazine,valsalva and standing.

Anyone can help explaning this? Why it is worsened by decreasing left ventricular chamber size?dosent that make it worse?since hypertrophic means smaller ventricular chamber! Im confused..
ok..let me try......in HOCM, there is hypertrophy interventricylar septum not ventricular free wall....so anything that decreases chamber size causes septum obstructing aortic valve flow...>so symptoms arise and murmur intensity increases
whereas anything that increases chamber size(like squatting,finger grip etc)---->causes chamber to fill which makes septum less obstructing to aortic flow----> so symptoms decrease and also murmur intensity decrease....

hope it helps.......thank you
Reply With Quote Quick reply to this message
The above post was thanked by:
bigBOSSguy (04-01-2013)
  #3  
Old 04-01-2013
USMLE Forums Veteran
 
Steps History: Not yet
Posts: 213
Threads: 54
Thanked 53 Times in 41 Posts
Reputation: 63
Default

How about mitral valve prolapse? It is kinda similar to hypertrophic obstructive cardiomyopathy too. Why is it worsened by decreasing ventricular size?...but mitral rigurtation in opposite way(makes sense in rigurtation but not in mitral valve prolapse)??
Reply With Quote Quick reply to this message
 
  #4  
Old 04-02-2013
venky2600's Avatar
USMLE Forums Master
 
Steps History: 1+CK+CS+3
Posts: 1,186
Threads: 119
Thanked 817 Times in 434 Posts
Reputation: 827
Send a message via Yahoo to venky2600
Post

Quote:
Originally Posted by bigBOSSguy View Post
How about mitral valve prolapse? It is kinda similar to hypertrophic obstructive cardiomyopathy too. Why is it worsened by decreasing ventricular size?...but mitral rigurtation in opposite way(makes sense in rigurtation but not in mitral valve prolapse)??
yes, mitral valve prolapse is similar to HOCM in presentation of murmurs....coz in prolapse,there is valve weakness(due to degeneration) leading to parachute like prolapse----->so when any condition that increase chamber size,chamber fills full without leaving any gap to parachute the mitral valve(hope my sounding understands here)....when any condition that decrease chamber size lead to more prolapse(during systole),.....i mean when less chamber size condition present, then there is more turbulence to produce sound with more intensity

mitral regurgitation is due to unable to close mitral valve...MVP is common cause of MR when chordae tendinae ruptures ,which usually support valve leaflets

hope it clears too....thanks

Last edited by venky2600; 04-02-2013 at 01:35 AM.
Reply With Quote Quick reply to this message
The above post was thanked by:
bigBOSSguy (04-02-2013)



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
hypertrophic and restrictive cardiomyopathy gross pathology flowerlady1 USMLE Step 1 Forum 2 04-29-2012 06:41 AM
Hypertrophic Cardiomyopathy callmerocky2 USMLE Step 1 Forum 1 03-06-2012 06:59 AM
Hypertrophic Cardiomyopathy mohitkmc USMLE Step 1 Forum 5 09-23-2011 04:39 PM
The mechanism of arrhytmia in Hypertrophic Obstructive Cardiomyopathy hana USMLE Step 1 Forum 8 02-18-2011 08:57 AM
Murmur of Aortic Stenosis versus Hypertrophic Obstructive CardioMyopathy FSUSTC USMLE Step 2 CK Forum 2 03-04-2010 08:18 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)