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Figure 5 | Cardiovascular Ultrasound

Figure 5

From: Pre-ejection period by radial artery tonometry supplements echo doppler findings during biventricular pacemaker optimization

Figure 5

Effect of Biventricular Pacemaker Optimization on PEP Measured by Echo Doppler. Echo determined PEP in the same patient as in Figure 1 during native AV conduction at an AVD of 300 ms in panel A, baseline AVD of 200 ms in panel B, AVD of 180 ms in panel C and optimal AVD of 160 ms in panel C. Mean PEP was 184 ms in A and 171 ms at baseline AVD of 200 ms during biv pacing in B. AVD of 180 ms in C and optimal AVD of 160 ms in D led to shortening of PEP to 154 ms. Note difficulty in determining QRS onset in panel A.

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