cardio questions - 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 04-20-2015
USMLE Forums Addict
 
Steps History: ---
Posts: 137
Threads: 62
Thanked 3 Times in 3 Posts
Reputation: 13
Default cardio questions

Can anybody pls explain,

1. how rapid squatting increases intensity of Aotic stenosis murmer?
2.valsava maneuver increases intensity of hypertrophic cardiopathy murmer but hand grip and rapid squatting decreases its murmer intensity.what is the relation between them. Can anybody pls explain this phenomenon.
3. valsalva maneuver in Mitral valve prolapse gives earlier onset of click/murmer whereas hand grip and rapid squatting gives later onset of later onset of click/murmer. How?

These extracts are taken from the "auscultation of heart", first aid, P. 272 (2014), P278 (2015)


Thanks in advance.
Reply With Quote Quick reply to this message



  #2  
Old 04-20-2015
CleverFOX's Avatar
USMLE Forums Veteran
 
Steps History: Step 1 Only
Posts: 239
Threads: 4
Thanked 173 Times in 116 Posts
Reputation: 185
Send a message via Skype™ to CleverFOX
Default

My explanation:

1>Rapid Squatting

Rapid squatting --> Increased Abdominal Pressure --> Increased venous Return due to compression of IVC --> Increased Preload --> Increased Stroke Volume


Now you must remember that Aortic stenosis produces a sound which is crescendo-decrescendo in nature because the sound rises as the pressure inside the Left Ventricle increases and more blood is being pumped out...so in Reapid Squatting if we have to pump out more blood(increased sv) the peak/crest of this sound will be higher thus louder so it increases the murmur intensity of Aortic stenosis


Also check this two threads for 2 and 3:

Code:
http://www.usmle-forums.com/usmle-step-1-forum/41724-handgrip-murmur-intensity.html
Code:
http://www.usmle-forums.com/usmle-step-1-forum/20110-mitral-prolapse-valsalva-squatting.html
__________________
Hard work beats talent when talent doesn't work hard...
Step 1 Experience -
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
- 259
Reply With Quote Quick reply to this message
The above post was thanked by:
Aumsai (04-20-2015)



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
Ejection Time Cardio No_BS USMLE Step 1 Forum 6 05-01-2014 06:28 PM
Cardio physiology Mhd. USMLE Step 1 Forum 0 06-03-2013 05:12 AM
cardio q 1 rupesh USMLE Step 2 CK Forum 6 01-23-2013 06:11 AM
cardio EKG q venky2600 USMLE Step 1 Forum 12 10-28-2012 09:48 AM
cardio rupesh USMLE Step 1 Forum 3 10-22-2012 01:48 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)