Left ventricular resynchronization in H.F. Comparison of alternative optimization methods

M. Graziano, C. Valzania, D. Bianchini, G. Loreti, I. Corazza, R. Zannoli

Research output: Chapter in Book/Report/Conference proceedingConference contribution


This paper compares the results of two different procedures, Doppler Ultrasound and Transthoracic Impedance, to monitor the left ventricular stroke volume on a group of heart failure patients submitted to electrical resynchronization therapy. The two procedures have been applied in parallel on 9 patients by changing the stimulation delays between the septal and posterior ventricular walls and the results have been compared to evaluate the correlation between the two choices, and their sensitivity to detect the optimal stimulation condition. The results demonstrated a good agreement between the data obtained with the two procedures (R=0.82), but a very limited change of the target parameter (Stroke Volume) by changing the stimulation delay. This suggests doubts on the choice of stroke volume as the best parameter to be observed for the optimization process and on the adequate sensitivity of the two procedures to highligt the process.

Original languageEnglish
Title of host publicationComputers in Cardiology
Number of pages3
Publication statusPublished - 2008
EventComputers in Cardiology 2008, CAR - Bologna, Italy
Duration: Sep 14 2008Sep 17 2008


OtherComputers in Cardiology 2008, CAR

ASJC Scopus subject areas

  • Computer Science Applications
  • Cardiology and Cardiovascular Medicine


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