Discover and read the best of Twitter Threads about #ffr

Most recents (3)

⚡️ #YesCCT Coronary Plaque Assessment #Tweetorial ⚡️

By @CoronaryDoc + @AChoiHeart

✅ Why Plaque Assessment?
✅ High Risk Plaque Features
✅ Plaque Characterization/Quantification
✅ Supporting Clinical Data

#CardioTwitter #ACCImaging #SCCT2019 @heart_scct @journalCCT
1/14
2/14
As #SCD or #MI is 1st symptom of #atherosclerosis in 2/3 of pts, early ID of #CAD is of paramount importance

#YesCCT allows for
✅ ID of plaque
✅ Quant. of plaque
✅ Characterization of plaque
✅ Arterial remodeling

Lin, @LubbDup & @lesleejshaw: bit.ly/2x1b5Yz
3/14
Serial angiographic studies have demonstrated an accelerated & rapid plaque progression before most cases of ACS

Rapid plaque growth ➡️ plaque rupture ➡️ thrombus formation ➡️ MI

@LubbDup & @JonathonLeipsic et al: bit.ly/2WIt5Bj
Read 14 tweets
What’s Your “Shear Stress”?

Want to Know More?

Relax & Read ⤵️ #Tweetorial by @CoronaryDoc + @arnavkumar

⚡️Coronary Wall Shear Stress in 12 Tweets ⚡️

1/12
Main Readings:
1) interventions.onlinejacc.org/content/early/…
2) ow.ly/XmD130mc9X8
3) link.springer.com/article/10.100…
#ACCImaging @ACCCardioEd
2/12
Wall shear stress (#WSS) is the frictional force of blood exerted tangential to endothelial surface of vessel wall & expressed in variety of units (1Pa=1N/m2=10 dynes/cm2)

It is derived from
• luminal geometry
• flow rate
• blood viscosity
• near wall velocity values
3/12
In vivo WSS calculations are derived from computational fluid dynamic (#CFD) simulations created from reconstructed 3D vessel geometries (from biplane angio/IVUS/OCT/CT/MR) combined with patient-specific pulsatile inlet/outlet velocity values (Doppler wire or other methods)
Read 12 tweets
1/10 #STEMI from ruptured plaque, less plaque erosion. @BraunwaldEugene pic demonstrates LDL oxidized, glycated➡️cytokines release express adhesion molecules➡️monocytes roll, diapedesis➡️ingest LDL, become foam cell➡️SMC migrate, proliferate➡️some apoptosis➡️plaque
2/10 Why #STEMI on #ECG
1. Diastolic current of injury: current away from relatively depolarized injury➡️TQ depression➡️normalized on ECG➡️ST elevation
2. Systolic current of injury: current towards injury due to early repol➡️ST elevation
Read 19 tweets

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