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Spontaneous enlargement of pulmonary artery after successful balloon pulmonary angioplasty in a patient with chronic thromboembolic pulmonary hypertension

EuroIntervention 2016;12:e1435 published online e-edition December 2016. DOI: 10.4244/EIJ-D-15-00484

1. Department of Cardiology, National Hospital Organization Okayama Medical Center, Okayama, Japan; 2. Department of Clinical Science, National Hospital Organization Okayama Medical Center, Okayama, Japan

A 72-year-old woman with inoperable chronic thromboembolic pulmonary hypertension underwent balloon pulmonary angioplasty (BPA). Intravascular ultrasound (Eagle Eye® Platinum; Volcano Corp., San Diego, CA, USA) revealed severe stenosis in the right A8 with a narrow vessel distal to the lesion (Panel Aa, Panel Ab). According to a pressure wire (Primewire Prestige® PLUS; Volcano Corp.) measurement, the pulmonary artery pressure distal to the lesion was much lower than that proximal to the lesion with little pulse pressure (Panel Ac). Immediately after the dilation with a 2.5 mm balloon catheter (IKAZUCHI PAD; Kaneka, Osaka, Japan) at 14 atm, the vessel diameter distal ...

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