title: Reciprocating tachycardia in a patient with high-grade atrioventricular block.
mesh_terms: D015716:Electrocardiography, Ambulatory; D006327:Heart Block / Q000150:complications* / Q000503:physiopathology; D006801:Humans; D008297:Male; D008875:Middle Aged; D013614:Tachycardia, Paroxysmal / Q000150:complications* / Q000503:physiopathology