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Figure 1 | Cardiovascular Ultrasound

Figure 1

From: Echo-driven V-V optimization determines clinical improvement in non responders to cardiac resynchronization treatment

Figure 1

TSI images in a heart failure patient who deteriorated after CRT. Color bar at the top right of each panel denotes severity of delay in peak contraction during ejection phase, recognized as time interval between aortic valve opening and closure. In TSI, normal myocardium is coded in green. Presence of delay is coded in progressive sequence of green, yellow, orange, and red. Figure shows severe lateral wall (white arrows, A) and posterior wall delay (white arrows, D) which decreased at LV pre-excitation of 20 ms (white arrows, B and E) and was abolished (C and F) at LV pre-excitation of 50 ms is shown. LV outflow velocity times integral (VTI) increased from 10.95 cm at nominal (0) VV delay (G) to 12.36 cm at LV pre-excitation of 50 ms (H). NYHA symptoms improved from class III pre-optimization to class II post optimization.

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Cardiovascular Ultrasound

ISSN: 1476-7120

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