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Mean systolic and diastolic blood pressures (BP) of 5 beats were measured 5 minutes after each mode change using fingertip plethysmography. Materials and Methods: Between March 2009 and February 2010, 40 patients (28 men mean age, 61 ± 15 years) with biventricular (BiV) device were enrolled. The aims of this study were to noninvasively assess the hemodynamic effects of different ventricular pacing sites with and without AV and VV dyssynchrony and to observe the patients for clinical symptoms of the pacemaker syndrome during the AV sequential and ventricular-only pacing modes. The role of interventricular (VV) dyssynchrony has not been studied yet. Conclusion: According to our study, there was no difference in response to CRT between ischemic versus non-ischemic cardiomyopathy at six months ’ follow-up.īackground/Objectives: Pacemaker syndrome was mainly described as the sequel of atrioventricular (AV) dyssynchrony.

A cross-tabulation of response versus etiology showed no significant difference between ischemic versus non-ischemic cardiomyopathy with regard to response to CRT (P=0.322). Amongst the 83 patients, 48 had ischemic cardiomyopathy and 35 had non-ischemic cardiomyopathy. Results: After 6 months, 60 patients out of the 83 patients were responders. After 6 months, response was defined as being alive, no hospitalization for cardiac decompensation, and an improvement in NYHA class>1 grade.

Methods: Eighty-three consecutive patients (62 men) who had a biventricular pacemaker inserted at Tehran Heart Center between May 2004 and March 2007 were evaluated retrospectively. We sought to identify which patients benefit the most from CRT in regard to the etiology of heart failure. However, 20-30 % of patients remain non-responders to CRT. Conclusions: The present study showed that the non-AV sequential BiV and LV pacing may have no significantīackground: Cardiac resynchronization therapy (CRT) is an effective treatment for patients with moderate to severe heart failure. In addition, there was no difference in terms of pacemaker syndrome-related symptoms following mode change from DDD-BiV to DDD-RV or DDD-LV (all P>0.05). However, mean systolic BP was significantly higher in AV sequential biventricular pacing (DDD-BiV) compared with ventricular-only pacing modes (all P<0.05). Results: There was no difference in mean systolic BP among different ventricular-only pacing modes (all P = NS). The patients were also observed for the occurrence of symptoms suggestive of the pacemaker syndrome, including dyspnea, palpitations, dizziness, presyncope, and syncope.

For all those who thought I would amount to nothing… “WHO said it could not be done? And what great victories has he to his credit which qualify him to judge others accurately?”īackground/Objectives: Pacemaker syndrome was mainly described as the sequel of atrioventricular (AV) dyssynchrony. Both taught me to live life to its fullest and pursue what dreams you are passionate about with every breath, without fear or regret. Lastly, in memories of Angelo Campeotto and Ben Kronenberg (OBM). John Power) for the opportunity to undertake and complete my thesis studies, your support and understanding over the long and enduring years. Mark Jois, Associate Professor Richard Weisinger, Dr. Paul, Xenia, all bretheren at 530 U.G.L.V. Ivan for the Judo spirit and vigor, Shaul for your guidance into the light. To Joe for your staff of wisdom to guide the tough road, Chris for the understanding and caring words, Attila and Liam for a friendship and laughs. Through my challenges you helped to bear, to listen in my trying times, I learnt the true value of our family and your priceless worth.