[The clinical manifestations and prevalence of different types of paroxysmal supraventricular tachycardia].
Sixty nine cases of paroxysmal supraventricular tachycardia (PSVT) were submitted to electrophysiological studies. The prevalent data in different types of PSVT are as follows: 49% are atrioventricular reentry tachycardia (AV-RT), 14.5% atrioventricular nodal reentry tachycardia (AVN-RT), 28% AV + AVN-RT, and 8.5% of other types. Altogether 77% in this group have atrioventricular accessory bypass, in which about half of them are concealed ones. Electrocardiographic characteristics during tachycardia give hints to diagnosis: (1) AV-RT has the fastest heart rate, with 62% greater than 200 beats/min, and 82% greater than 188 beats/min; (2) retrograde P waves can be detected in 64% cases of AV bypass; (3) 50% of AV-RT show bundle branch block pattern QRS. Since accessory pathways are the majority in our country, the importance of treatment is stressed.
Wan
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PUMC Hospital, CAMS, Beijing.
D000293:Adolescent; D000328:Adult; D002648:Child; D004562:Electrocardiography; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D013611:Tachycardia, Atrioventricular Nodal Reentry / Q000503:physiopathology; D013617:Tachycardia, Supraventricular / Q000145:classification / Q000503:physiopathology*