Martin Ugander Profile picture
Nov 1, 2022 5 tweets 3 min read Twitter logo Read on Twitter
#EchoFirst & diastolic dysfunction - what do you know about:
✅hydraulic forces
✅myocardial stiffness
✅damping

Learn more in this talk I recently gave at Echo Australia 2022.

🫀🔊
#BoingBoing

Did you know that #HydraulicForces:
✅are related to the relative size of the LA in relation to the LV?
✅contribute to left ventricular diastolic function?
✅associate independently with survival?
Myocardial #stiffness and #damping are mechanistic ⚙️properties of the LV that can be estimated by measuring the Doppler 🔊 E wave peak velocity, acceleration time ⏲️, and deceleration time ⏲️.

More in this separate thread:

Not all diastolic dysfunction manifests in the same way. HFpEF has increased damping, whereas HFrEF has increased stiffness.

#SameSameButDifferent
All this an more are touched upon in this talk:

• • •

Missing some Tweet in this thread? You can try to force a refresh
 

Keep Current with Martin Ugander

Martin Ugander Profile picture

Stay in touch and get notified when new unrolls are available from this author!

Read all threads

This Thread may be Removed Anytime!

PDF

Twitter may remove this content at anytime! Save it as PDF for later use!

Try unrolling a thread yourself!

how to unroll video
  1. Follow @ThreadReaderApp to mention us!

  2. From a Twitter thread mention us with a keyword "unroll"
@threadreaderapp unroll

Practice here first or read more on our help page!

More from @mugander

Feb 10, 2022
Do you routinely measure #MAPSE?

Did you know that MAPSE beats #GLS and #LVEF regarding prognosis?

A new multicenter collab study out, led by @KellmanPeter

Ref: pubmed.gov/35132872

#WhyCMR 🫀🧲 #EchoFirst 🫀🔊

A thread 🧵. 1/n
We know that GLS is a composite measure correlated w LVEF, LVEDV, LVESV, LV mass, infarction, non-ischemic scar, aortic stenosis, mitral regurg, ECV.

So, not surprisingly, GLS associates with poor prognosis.

Ref: pubmed.gov/32563637 Suppl Table 2

2/n
Notably, mitral annular plane systolic excursion #MAPSE has been measurable by #EchoFirst since 1986 by M-mode (pubmed.gov/3464160).

3/n From pubmed.gov/3464160, Figure 3-4B, M-mode recording of th
Read 11 tweets
Oct 28, 2020
When it comes to LV diastolic (dys)function, let's think of the LV like a spring, which is compressed during systole, and recoils during diastole.

A thread 🧵
1/n

@strain_rate @load_dependent @DrWillWatson @shaunrobinson02 @leoshmu
The physics governing the recoil of a spring are well described as a damped harmonic oscillator, and it is well validated that the Doppler E-wave is governed by these same physics, aka parameterized diastolic filling (PDF) [pubmed.gov/3812709].
2/n
This means that the shape of the E-wave can be excellently curve fit to a function that describes the behavior of a damped harmonic oscillator. Figure from pubmed.gov/33066772
3/n
Read 15 tweets

Did Thread Reader help you today?

Support us! We are indie developers!


This site is made by just two indie developers on a laptop doing marketing, support and development! Read more about the story.

Become a Premium Member ($3/month or $30/year) and get exclusive features!

Become Premium

Don't want to be a Premium member but still want to support us?

Make a small donation by buying us coffee ($5) or help with server cost ($10)

Donate via Paypal

Or Donate anonymously using crypto!

Ethereum

0xfe58350B80634f60Fa6Dc149a72b4DFbc17D341E copy

Bitcoin

3ATGMxNzCUFzxpMCHL5sWSt4DVtS8UqXpi copy

Thank you for your support!

Follow Us on Twitter!

:(