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Fig. 6 | Cardiovascular Ultrasound

Fig. 6

From: Speckle tracking echocardiography analyses of myocardial contraction efficiency predict response for cardiac resynchronization therapy

Fig. 6

Factors that influence contraction efficiency. a shows that when ECT is settled, different contraction velocities (slope) can result in different EC. b shows that when contraction velocity is settled, either late onset of contraction after AVO or early end of contraction before AVC may shorten ECT and decrease EC. ECT: effective contractile time; EC: effective contraction; AVC: aortic valve closure; AVO: aortic valve opening

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