QRS Morphology in Patients with Right Ventricular Pacing
نویسندگان
چکیده
منابع مشابه
Shortening of paced QRS complex and clinical improvement following upgrading from apical right ventricular pacing to bifocal right ventricular or biventricular pacing in patients with permanent atrial fibrillation.
BACKGROUND Cardiac resynchronisation therapy (CRT) using biventricular pacing (BVP) has been shown to improve survival in patients with chronic heart failure (CHF). However, BVP cannot be achieved in all patients because of technical problems. In such patients, bifocal right ventricular pacing (BFP) may be an alternative. AIM To analyse the relationship between changes in paced QRS complex wi...
متن کاملBiventricular pacing decreases sympathetic activity compared with right ventricular pacing in patients with depressed ejection fraction.
BACKGROUND Although there have been few studies in which the hemodynamic effects of right ventricular (RV) and left ventricular (LV) pacing were compared with those of biventricular (BV) pacing, the autonomic changes during these different pacing modes remain unknown. We hypothesized that BV pacing results in improved hemodynamics and a decrease in sympathetic nerve activity (SNA) compared with...
متن کاملVentricular remodeling in right ventricular apical pacing.
OBJECTIVE To determine ventricular remodeling (VR) and the role of clinical and functional variables in patients with normal cardiac function who underwent right ventricular apical pacing (RVAP). METHODS Among the 268 consecutive patients with standard pacemaker due to complete atrioventricular block (CAVB), those with left ventricular ejection fraction (LVEF) < 55% and left ventricular end-d...
متن کاملLeft ventricular pacing improves haemodynamic variables in patients with heart failure with a normal QRS duration.
OBJECTIVES To assess whether patients with congestive heart failure (CHF) and a normal QRS duration can benefit from left ventricular (VDD-LV) pacing. DESIGN Cardiac resynchronisation is reserved for patients with a broad QRS duration on the premise that systolic resynchronisation is the mechanism of benefit, yet improvement from pacing correlates poorly with QRS duration. In CHF patients wit...
متن کاملThe Effects of QRS Duration and Pacing Sites on the Acute Hemodynamic Changes during Right Ventricular Pacing
BACKGROUND Has been reported that patients exhibiting prolonged paced QRS duration tend to have more serious heart disease, and the paced QRS duration can be an effective indicator of impaired left ventricular function. However, the acute and chronic hemodynamic effects of paced QRS duration and pacing sites during right ventricular (RV) pacing remain unknown. METHODS A total of 14 patients w...
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ژورنال
عنوان ژورنال: Japanese Circulation Journal
سال: 1974
ISSN: 0047-1828,1347-4839
DOI: 10.1253/jcj.38.125