iiinova — where your digital self keeps evolving

🇳🇴Asbjørn Støylen🇩🇰 @strain-rate.bsky.social · 14/12/2025

#Cardiosky #Echosky Basal shortening during IVR isn't "wasted work", the simultaneous stretching the apical part sets up a pressure gradient/volume displacement, creating an apical momentum facilitating flow during early filling

041

🇳🇴Asbjørn Støylen🇩🇰 @strain-rate.bsky.social · 13/12/2025

#Cardiosky #Echosky Do strain - pressure loops measure myocardial stroke work? No. SW = mean ventricular SBP - mean ventricular DBP x SV. GLS do not correlate with SV across a normal population. Why? SV increases with body (and heart) size. GLS decreases with body (and heart) size.

121

🇳🇴Asbjørn Støylen🇩🇰 @strain-rate.bsky.social · 11/12/2025

LA reservoir strain (LARS) is NOT a measure of atrial compliance (distensibility) as atrial distension is due to LV contraction, not pressure, hence the proxy for LA pressure / LARS is NOT a measure of LA stiffness.

032

Reposted by 🇳🇴Asbjørn Støylen🇩🇰

🇳🇴Asbjørn Støylen🇩🇰 @strain-rate.bsky.social · 10/05/2025

#Cardiosky #Echosky The north wind is just as cold blowing from the front or the back. AV-plane motion does not change interpretation when seen from the atrium or the ventricle. And what is the physiological meaning of MAPSE relative to atrial size??? On LA strain during ventricular systole.

022

Reposted by 🇳🇴Asbjørn Støylen🇩🇰

🇳🇴Asbjørn Støylen🇩🇰 @strain-rate.bsky.social · 23/05/2025

#Cardiosky Atrial contraction strain. Numerator is AV-plane motion during atrial systole, expressing volume injected into the ventricle (i.e. the A wave). Denominator is atrial length, but as volume is partly a function of ventricular EDP, ventricular compliance is a confounder.

052

Reposted by 🇳🇴Asbjørn Støylen🇩🇰

Victoria Delgado @victoriadelgadomd.bsky.social · 14/12/2024

2024 was a blast in cardiovascular imaging congresses led by EACVI. Be ready for #EACVI2025: 📍Vienna 📅11-13 Dcember 👨‍👩‍👦‍👦#EuroeEcho, #EuroCMR and #ICNC-CT together Help us to shape the programme and be part of it 👉https://escardio.formstack.com/forms/eacvi_2025_call_for_sessions #cardiosky

0167

Reposted by 🇳🇴Asbjørn Støylen🇩🇰

🇳🇴Asbjørn Støylen🇩🇰 @strain-rate.bsky.social · 13/06/2025

#Cardiosky Contractility cannot be measured by cardial imaging; all imaging measures shortening (=volume reduction), which is load dependent. Myocardial contraction is not shortening, during systole there is both contraction without shortening, and shortening without contraction.

033

Reposted by 🇳🇴Asbjørn Støylen🇩🇰

🇳🇴Asbjørn Støylen🇩🇰 @strain-rate.bsky.social · 26/07/2025

#Cardiosky Regional strain pressure loops. Do they add information to regional strain? (Spoiler alert: they don't)

021

Reposted by 🇳🇴Asbjørn Støylen🇩🇰

🇳🇴Asbjørn Støylen🇩🇰 @strain-rate.bsky.social · 09/06/2025

#Cardiosky. Being both pre-and afterload dependent, myocardial stroke work is not a contractility measure. As GLS do not correlate with SV, Strain pressure loops do not measure stroke work.

153

Reposted by 🇳🇴Asbjørn Støylen🇩🇰

🇳🇴Asbjørn Støylen🇩🇰 @strain-rate.bsky.social · 27/06/2025

#EchoSky Nine uncomfortable facts about Global longitudinal left ventricular strain.

063

🇳🇴Asbjørn Støylen🇩🇰 @strain-rate.bsky.social · 05/12/2025

#Cardiosky 1: “Longitudinal strain” is not the real longitudinal shortening, as it adds the effect of inward tracking. 2: The inward gradient of longitudinal strain is an artefact of feature tracking.

152

🇳🇴Asbjørn Støylen🇩🇰 @strain-rate.bsky.social · 18/10/2025

US anti-vax stance to blame for continent-wide surge in measles, say experts

000

🇳🇴Asbjørn Støylen🇩🇰 @strain-rate.bsky.social · 04/08/2025

#Cardiosky Attempt to estimate LA pressure from echo. The formula uses among other measures tau, non invasive estimated from among other IVRT. But IVRT depends both on tau and LAP. How is that for circular reasoning? doi.org/10.1093/ehjc...

doi.org

Imaging-based method to quantify left ventricular diastolic pressures

AbstractAims. To establish an imaging-based method to quantify left ventricular (LV) diastolic pressures.Methods and results. In 115 patients suspected of

121

🇳🇴Asbjørn Støylen🇩🇰 @strain-rate.bsky.social · 26/07/2025

#Cardiosky Regional strain pressure loops. Do they add information to regional strain? (Spoiler alert: they don't)

021

🇳🇴Asbjørn Støylen🇩🇰 @strain-rate.bsky.social · 12/07/2025

#Cardiosky Fractional longitudinal LV shortening. An alternative to LV GLS

063

🇳🇴Asbjørn Støylen🇩🇰 @strain-rate.bsky.social · 27/06/2025

#EchoSky Nine uncomfortable facts about Global longitudinal left ventricular strain.

063

🇳🇴Asbjørn Støylen🇩🇰 @strain-rate.bsky.social · 13/06/2025

033

🇳🇴Asbjørn Støylen🇩🇰 @strain-rate.bsky.social · 09/06/2025

#Cardiosky. Being both pre-and afterload dependent, myocardial stroke work is not a contractility measure. As GLS do not correlate with SV, Strain pressure loops do not measure stroke work.

153

🇳🇴Asbjørn Støylen🇩🇰 @strain-rate.bsky.social · 02/06/2025

#Cardiosky When has normal EF been equivalent to normal LV function?!??

100

🇳🇴Asbjørn Støylen🇩🇰 @strain-rate.bsky.social · 23/05/2025

052

🇳🇴Asbjørn Støylen🇩🇰 @strain-rate.bsky.social · 16/05/2025

#Cardiosky Atria fills during ventricular ejection and early ventricular diastole. In ventr. ejection, atria expand by apical AV-plane motion driven by ventricular shortening. In early diastole, atria fill by ventricular transverse recoil/expansion, as the atria are compressed longitudinally.

010

🇳🇴Asbjørn Støylen🇩🇰 @strain-rate.bsky.social · 10/05/2025

022

🇳🇴Asbjørn Støylen🇩🇰 @strain-rate.bsky.social · 05/04/2025

#Cardiosky #Echosky Atrial filling and emptying is related to ventricular systolic and diastolic ventricular function, as volume changes are mainly a function of AV-plane motion within a relatively unchanged outer heart contour

064

🇳🇴Asbjørn Støylen🇩🇰 @strain-rate.bsky.social · 20/03/2025

#Cardiosky #Echosky I have collected some recent posters from Bluesky / Twitter and some diagrams from the strain rate website in a compendium on Left ventricular mechanics. It can bee downloaded (free) as *.pdf. from the strain rate front page. stoylen.folk.ntnu.no/strainrate/

stoylen.folk.ntnu.no

Animations will still be in *.GIF format, so they will run on web browsers, and can be embedded in presentations. Pictures and animations are still free to use, with due credit. Strain and strain rate are the concepts of myocardial deformation. My basic views are still that

043

🇳🇴Asbjørn Støylen🇩🇰 @strain-rate.bsky.social · 13/03/2025

#Cardiosky #Echosky LV ejection is a complex interaction between LV contraction - relaxation, flow acceleration - deceleration and artery - ventricular coupling.

0133

🇳🇴Asbjørn Støylen🇩🇰 @strain-rate.bsky.social · 08/03/2025

#Cardiosky #Echosky Pre ejection velocity -occurs before MVC, and is not isovolumic. -is true ventricular contraction, not atrial recoil -is the true LV electromechanical activation timepoint. -peak pre ejection velocity or acceleration is not an LV contractility measure

031

🇳🇴Asbjørn Støylen🇩🇰 @strain-rate.bsky.social · 05/03/2025

#Cardiosky #Echosky Late filling is the atrial systole, driven by the atrial pressure increase, propagated into the LV as pulse propagation, seen as a deformation wave from base to apex.

052

Reposted by 🇳🇴Asbjørn Støylen🇩🇰

Josephine Kavanagh @ourhaus.bsky.social · 02/03/2025

bsky.app/profile/ourh...

121

🇳🇴Asbjørn Støylen🇩🇰 @strain-rate.bsky.social · 24/02/2025

#Cardiosky #Echosky MAPSE and GLS are sensitive to both HFpEF and HFrEF. GLS is confounded by BSA, MAPSE is not, both are age dependent. EF is insensitive to HFpEF, but BSA and age. independent. All are load dependent.

033

🇳🇴Asbjørn Støylen🇩🇰 @strain-rate.bsky.social · 22/02/2025

#Cardiosky #Echosky MAPSE generates a constant % of SV. MAPSE is sex independent, and near near body size independent. MAPSE correlates with SV and EF. GLS (numerical) decreases with increasing body size, and is higher in women. GLS correlates with EF, but not with SV, so GLS based GMW is not valid.

0106

Reposted by 🇳🇴Asbjørn Støylen🇩🇰

Kardioklick @kardioklick.bsky.social · 05/02/2025

Over at the other site somebody is boasting to have saved a life but stenting a proximal Cx in an asymptomatic patient (big yellow arrows underscore the success!) I think it could be argued that this patient was actually harmed, given the never-ending 2% annual event rate of any PCI. #cardiosky

4104

🇳🇴Asbjørn Støylen🇩🇰 @strain-rate.bsky.social · 03/02/2025

Diastasis is the interval between heart cycles, not between early and late filling of a single heart cycle, thus EA fusion of increasing HR. Early filling releases elastic energy from previous systolic compression, atrial systole stretches the ventricles before following systole. Vortex is conserved

243

🇳🇴Asbjørn Støylen🇩🇰 @strain-rate.bsky.social · 23/01/2025

Early filling is LV recoil during last part of relaxation, while LV pressure⬇️ . AV plane motion generates vorticity starting at the base, the filling phase propagates from base to apex as a wave of wall deformation and flow velocity propagation and later vortex expansion.

132

Reposted by 🇳🇴Asbjørn Støylen🇩🇰

Joshua Thornsberry @thornsberryjd.bsky.social · 20/01/2025

This is how to #CardioSky like a pro.

055

🇳🇴Asbjørn Støylen🇩🇰 @strain-rate.bsky.social · 18/01/2025

#Cardiosky LV contraction does not mean shortening, but tension increase, LV relaxation does not mean lengthening, but tension decrease. They are not simultaneous through the heart cycle.

071

🇳🇴Asbjørn Støylen🇩🇰 @strain-rate.bsky.social · 18/01/2025

Nacros cloud over Trondheim, with Venus and possibly the comet G3

010

🇳🇴Asbjørn Støylen🇩🇰 @strain-rate.bsky.social · 16/01/2025

Nacreous clouds over Trondheim this morning.

000

🇳🇴Asbjørn Støylen🇩🇰 @strain-rate.bsky.social · 10/01/2025

#cardiosky Measuring LVOT velocities should be done above the acceleration zone, using functional, not anatomical assessment. The LVOT signal for the cw signal will always show the accelerated velocities, the convergent zone having higher intensity, and cannot be used for LVOT velocities.

2102

🇳🇴Asbjørn Støylen🇩🇰 @strain-rate.bsky.social · 09/01/2025

The majestic icebergs of theIlulissat icefjord on Greenland

000

Reposted by 🇳🇴Asbjørn Støylen🇩🇰

Dr. Monali Desai @drmonalidesai.bsky.social · 03/01/2025

This study highlights the importance of strength training in addition to cardio exercise in the treatment plan for cardiac patients. Exercise Therapy Rescues Skeletal Muscle Dysfunction and Exercise Intolerance in Cardiometabolic HFpEF in Mouse Model #cardiosky www.jacc.org/doi/10.1016/...

011

Reposted by 🇳🇴Asbjørn Støylen🇩🇰

Dr Martha Gulati @drmarthagulati.bsky.social · 03/01/2025

#BestDiets #FoodisMedicine by @usnews For Heart Health: #1: DASH Diet #2: Mediterranean Diet @SmidtHeart @WomensHeartCS #CVPrev #Cardiosky ⤴️PLANTS🌱 ⤴️ Health fats:🥑🐟 ⤵️Processed foods ⤵️ Sugar ⤵️ Saturated/Trans fats ⤵️ Salt🧂 #NoMagicDiet See: health.usnews.com/best-diet

0146

🇳🇴Asbjørn Støylen🇩🇰 @strain-rate.bsky.social · 04/01/2025

Titin is vital in diastolic function: Restoring forces i.e. active recoil.

010

🇳🇴Asbjørn Støylen🇩🇰 @strain-rate.bsky.social · 03/01/2025

IVR has constant volume, but shape change. All parts of the ventricle relax, but the apex relaxes most, and hence is most Energy demanding, the shortening of the base is not wasted work. The reconfiguration generates apical flow, giving momentum to the subsequent early filling

185

🇳🇴Asbjørn Støylen🇩🇰 @strain-rate.bsky.social · 27/12/2024

#CardioSky Protodiastole. Described already by Wiggers. The negative TDI spike in septum, after ejection, before e', is protodiastole, before AVC, not IVR.

031