Paroxysmal tachycardia precipitated by atrial or ventricular extrasystoles.
D005117:Cardiac Complexes, Premature; D006325:Heart Atria; D006801:Humans; D013610:Tachycardia; D013614:Tachycardia, Paroxysmal; D018879:Ventricular Premature Complexes
EXTRASYSTOLE; TACHYCARDIA, PAROXYSMAL