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. pic.twitter.com/JdU6w3AWKH
— 🇳🇴🇩🇰Asbjørn Støylen 🇬🇱🇵🇸🇺🇦 (@strain_rate) October 20, 2025