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Figure 3 Longitudinal Versus Circumferential LV Mechanics

Distribution of peak early diastolic longitudinal velocity (A), longitudinal displacement of the LV base (B), peak early diastolic apical untwisting velocity (C), and net ventricular twist (D) has been shown for patients with CP and RCM. In comparison with RCM, patients with CP had significantly higher longitudinal early diastolic velocity (E_m) and markedly attenuated untwisting velocity (E_r). Both velocities, when considered in isolation, however, show substantial overlap (E_m: 21 of 45 [47%]; longitudinal displacement: 36 of 45 [80%]; E_r: 23 of 45 [51%]; LV torsion: 24 of 45 [53%]). Abbreviations as in Figures 1 and 2.

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