Abstract:Acceleration has been measured both noninvasively and invasively, during both isovolumic contraction and early ejection and has been shown to reflect contractility, especially through correlation with dP/dt(max) . In this study timing and amplitude of mitral valve annulus acceleration assessed by tissue Doppler were measured and related to diastolic and systolic events. Invasive load independent measures of contractility, based on pressure-volume relationships, were derived, and pacing was done to modulate and… Show more
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