منابع مشابه
Handoko – RV-pacing in experimental pulmonary hypertension
21 Right heart failure in pulmonary arterial hypertension (PH) is associated with mechanical 22 ventricular dyssynchrony, which leads to impaired right ventricular (RV) function, and by 23 adverse diastolic interaction to impaired left ventricular (LV) function as well. However, 24 therapies aiming to restore synchrony by pacing are currently not available. In this proof-of25 principle study, w...
متن کاملAutomated detection of effective left-ventricular pacing: going beyond percentage pacing counters.
AIMS Cardiac resynchronization therapy (CRT) devices report percentage pacing as a diagnostic but cannot determine the effectiveness of each paced beat in capturing left-ventricular (LV) myocardium. Reasons for ineffective LV pacing include improper timing (i.e. pseudofusion) or inadequate pacing output. Device-based determination of effective LV pacing may facilitate optimization of CRT respon...
متن کاملMultiparametric CMR assessment of RV apical versus septal Pacing Study (MAPS) - preliminary acute hemodynamic findings
Background Controversy remains with regards to the optimal site for right ventricular (RV) pacing, with mounting evidence that RV apical pacing leads to accelerated deterioration in left ventricular systolic function both on the background of normal as well as already impaired ventricles. RV septal pacing is conceptually associated with a more physiological activation pattern and as such should...
متن کاملMechanisms whereby rapid RV pacing causes LV dysfunction: perfusion-contraction matching and NO.
Incessant tachycardia induces dilated cardiomyopathy in humans and experimental models; mechanisms are incompletely understood. We hypothesized that excessive chronotropic demands require compensatory contractility reductions to balance metabolic requirements. We studied 24 conscious dogs during rapid right ventricular (RV) pacing over 4 wk. We measured hemodynamic, coronary blood flow (CBF), m...
متن کاملT wave oversensing and low percentage of biventricular pacing in cardiac resynchronization therapy.
The success of cardiac resynchronization therapy (CRT) depends on a high percentage of ventricular pacing. We present the electrocardiography and electrograms of a patient who underwent an implantable cardioverter-defibrillator (ICD) with CRT implantation showing a low percentage of ventricular pacing as a result of T wave oversensing of paced QRS. The patient showed no clinical improvement. We...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: European Heart Journal
سال: 2020
ISSN: 0195-668X,1522-9645
DOI: 10.1093/ehjci/ehaa946.0785