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Medical AI Inquiry: You was designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.  Labels: BACKGROUND, RESULTS. Meshes: Atrioventricular Block, Cardiac Pacing, Artificial, Echocardiography, Electrocardiography, Female, Heart Ventricles, Humans, Male, Middle Aged, Pacemaker, Artificial, Treatment Outcome, Ventricular Function, Right, Ventricular Septum.
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Is right ventricular outflow tract septal pacing superior to right ventricular apical pacing? Context: The effects of right ventricular apical pacing (RVAP) and right ventricular outflow tract (RVOT) septal pacing on atrial and ventricular electrophysiology have not been thoroughly compared. To identify a more favorable pacing strategy with fewer adverse effects, 80 patients who had complete atrioventricular block with normal cardiac function and who were treated with either RVAP (n=42) or RVOT septal pacing (n=38) were recruited after an average of 2 years of follow-up. The data from electrocardiography and echocardiography performed before pacemaker implantation and at the end of follow-up were collected. The patients in the RVOT septal pacing and RVAP groups showed similar demographic and clinical characteristics before pacing treatments. After a mean follow-up of 2 years, the final maximum P-wave duration; P-wave dispersion; Q-, R-, and S-wave complex duration; left atrial volume index; left ventricular end-systolic diameter; ratio of transmitral early diastolic filling velocity to mitral annular early diastolic velocity; and interventricular mechanical delay in the RVOT septal pacing group were significantly less than those in the RVAP group (P<0.05). The final left ventricular ejection fraction of the RVOT septal pacing group was significantly higher than that of the RVAP group (P<0.05).
assistant
Compared with RVAP, RVOT septal pacing has fewer adverse effects regarding atrial electrical activity and structure in patients with normal cardiac function. Final Decision: yes