In the four-chamber view , the difference was @ ( @ ) ms after RVSP and @ ( @ ) ms after HP , P = @ ; in the two-chamber view , the difference was @ ( @ ) ms after RVSP and @ ( @ ) ms after HP , P = @ , and in the apical long-axis view , the difference was @ ( @ ) after RVSP and @ ( @ ) after HP , P = @ .