The LA expansion index was calculated as (Volmax – Volmin) × 100%/Volmin, where Volmax was defined as the maximal LA volume and Volmin was defined as the minimal LA volume
All volume measurements were calculated by the biplane area–length method in apical four- and two-chamber views.The LA volumes were measured at two points, immediately before mitral valve opening (maximal LA volume or Volmax) and at mitral valve closure (minimal LA volume or Volmin)
Conclusions
In our cohort of patients with various chronic cardiac diseases, lnLAEI performed better than DD parameters and 2016 DD algorithm for PCWP estimation. lnLAEI might be a useful echocardiographic parameter for non-invasive PCWP estimation.
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Um índice melhor que o E/e´para estimar a pressão capilar?
Nós admiramos muito quem consegue medir o volume atrial e suas variações com precisão.