Paroxysmal Supraventricular Tachycardia with Idiopathic Pulmonary Arterial Hypertension: A Case Report

Kohei Miyaji, Soichiro Ogura, Takahiro Nada, Kentaro Ejiri, Saori Tsukuda, Toshihiro Sarashina, Takashi Kawakami, Hiroto Shimogawara, Shinji Sato, Hiroki Mizoguchi, Mitsuru Munemasa, Hiromi Matsubara

Research output: Contribution to journalArticlepeer-review


There were few reports regarding arrhythmias with idiopathic pulmonary arterial hypertension (IPAH). A 37-year-old woman was presented with a 6-year history of palpitations. She was diagnosed as IPAH at 25 years old and introduced continuous intravenous administration of PGI2 at 27 years old. Her electrocardiogram revealed paroxysmal supraventricular tachycardia (PSVT) and was referred for Catheter ablation. The electrophysiological study revealed dual pathway in AV and VA conduction. PSVT was induced by programmed atrial stimuli with jump up phenomenon under a small amount of isoproterenol. The tachycardia cycle length was from 460 ms to 560 ms, but earliest atrial potential was recorded at His and intra-atrial propagation was similar in any cycle lengths. The single-extra ventricular stimuli did not reset the tachycardia, so we diagnosed as common type AV nodal reentrant tachycardia. Fractionated potential so called slow pathway potential were recorded in broad posteroseptal area and junctional tachycardia was immediately obtained during the applications of radiofrequency current, but it was hard to eliminate the PSVT. After 12 deliveries of radiofrequency current, PSVT could not be induced by any programmed stimuli.

Original languageEnglish
Pages (from-to)305
Number of pages1
Journaljournal of arrhythmia
Issue number4
Publication statusPublished - 2017
Externally publishedYes


  • PH
  • PSVT
  • ablation

ASJC Scopus subject areas

  • Cardiology and Cardiovascular Medicine


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