TY - JOUR
T1 - Intrathoracic and ventricular impedances are associated with changes in ventricular volume in patients receiving defibrillators for CRT
AU - Maines, Massimiliano
AU - Landolina, Maurizio
AU - Lunati, Maurizio
AU - Lonardi, Gabriele
AU - Pappone, Alessia
AU - Proclemer, Alessandro
AU - Zanotto, Gabriele
AU - Santini, Massimo
AU - Varbaro, Annamaria
AU - Vimercati, Marco
AU - Valsecchi, Sergio
PY - 2010/1
Y1 - 2010/1
N2 - Background: Some implantable cardioverter defibrillators (ICD) are able to monitor intrathoracic impedance to detect pulmonary fluid overload. This is achieved by measuring impedance between the ICD case and the right ventricular (RV) lead. We hypothesized that the measured impedance would rise with improvement in left ventricular (LV) volumes during cardiac resynchronization therapy (CRT), and that such impedance changes would be more apparent when measured with an alternative pacing vector. Methods: We analyzed echocardiographic and impedance data from heart failure patients implanted with a CRT-ICD capable of intrathoracic impedance measurement for fluid accumulation diagnosis, and LV pacing impedance recording for lead integrity monitoring. Results: In 127 out of 170 patients that received de novo CRT implantation, the LV end-systolic volume (LVESV) decreased at 6-month follow-up (LVESV at 6 month - LVESV at baseline
AB - Background: Some implantable cardioverter defibrillators (ICD) are able to monitor intrathoracic impedance to detect pulmonary fluid overload. This is achieved by measuring impedance between the ICD case and the right ventricular (RV) lead. We hypothesized that the measured impedance would rise with improvement in left ventricular (LV) volumes during cardiac resynchronization therapy (CRT), and that such impedance changes would be more apparent when measured with an alternative pacing vector. Methods: We analyzed echocardiographic and impedance data from heart failure patients implanted with a CRT-ICD capable of intrathoracic impedance measurement for fluid accumulation diagnosis, and LV pacing impedance recording for lead integrity monitoring. Results: In 127 out of 170 patients that received de novo CRT implantation, the LV end-systolic volume (LVESV) decreased at 6-month follow-up (LVESV at 6 month - LVESV at baseline
KW - Heart failure
KW - Impedance implantable defibrillator
KW - Ventricular volume
UR - http://www.scopus.com/inward/record.url?scp=73649124618&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=73649124618&partnerID=8YFLogxK
U2 - 10.1111/j.1540-8159.2009.02579.x
DO - 10.1111/j.1540-8159.2009.02579.x
M3 - Article
C2 - 19821939
AN - SCOPUS:73649124618
VL - 33
SP - 64
EP - 73
JO - PACE - Pacing and Clinical Electrophysiology
JF - PACE - Pacing and Clinical Electrophysiology
SN - 0147-8389
IS - 1
ER -