title: Stimulation in the vulnerable period with a demand pacemaker.
mesh_terms: D000368:Aged; D001145:Arrhythmias, Cardiac / Q000175:diagnosis; D005260:Female; D006352:Heart Ventricles; D006801:Humans; D008991:Monitoring, Physiologic; D010138:Pacemaker, Artificial / Q000009:adverse effects