PMC3917412_01
Case no. 1 - SonR signal amplitude with early improvement after cardiac resynchronization therapy defibrillator device implantation.
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F1
Within three weeks, the AV and VV delays were automatically adjusted by the device on a weekly basis; the patient became asymptomatic while the SonR signal amplitude increased (Figure 1).
PMC3917412_02
Case no. 2 - SonR signal amplitude evolution before and after cardiac resynchronization therapy defibrillator pacing.
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F2
Figure 2 shows the SonR signal amplitude evolution during these two periods (before and after LV lead implantation): the amplitude increased while the patient's status improved after the successful LV lead implantation.
PMC3917412_03
Case no. 3 - SonR signal amplitude evolution in the presence of atrial fibrillation and partial loss of biventricular capture.
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F3
Figure 3 shows the decrease of the SonR signal amplitude that started concomitantly to AF and remained low as long as AF lasted.