Fig. 1From: Automated left atrial strain analysis for predicting atrial fibrillation in severe COVID-19 pneumonia: a prospective studyMeasurement of LAS parameters with an automated software. LA strain values were automatically measured during the different LA phases: LASr measured as the first peak positive deflection, LAScd measured as the difference between LASr and LASct values, LASct measured as the beginning of the P wave contraction. LAS: left atrial strain. LASr: left atrial strain reservoir phase. LAScd: left atrial strain conduit phase. LASct: left atrial strain contraction phaseBack to article page