title: Differential diagnosis of sinus node dysfunction vs advanced atrioventricular block by analysis of venous flow patterns in patients with ventricular pacemakers.
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D001783:Blood Flow Velocity; D003937:Diagnosis, Differential; D006327:Heart Block / Q000175:diagnosis* / Q000503:physiopathology; D006801:Humans; D008875:Middle Aged; D010138:Pacemaker, Artificial; D012212:Rheology; D012849:Sinoatrial Node / Q000503:physiopathology*