title: Inapparent signals to demand pacemakers.
mesh_terms: D005117:Cardiac Complexes, Premature / Q000175:diagnosis; D003937:Diagnosis, Differential; D004562:Electrocardiography; D004566:Electrodes; D006329:Heart Conduction System / Q000502:physiology; D006801:Humans; D008012:Lidocaine; D009119:Muscle Contraction; D010138:Pacemaker, Artificial; D010369:Pectoralis Muscles / Q000502:physiology; D011199:Potentiometry
chemical_list: D008012:Lidocaine