Cardiovascular Diseases & Diagnosis

Osamu Doi

Publications

• Case Report
  Successful interventional recanalization against heavily calcified chronic total occlusion of proximal right coronary artery utilizing retrograde guidewire trapping technique at the terminal aorta
  Author(s): Masaki Tanabe, Takeo Kunitomo and Osamu DoiMasaki Tanabe, Takeo Kunitomo and Osamu Doi
  
  We described a case of chronic total occlusion (CTO) of the ostial right coronary artery (RCA) in a 79-year-old woman that had been undergoing hemodialysis. Coronary intervention of the ostial RCA-CTO was performed via the retrograde approach. The retrograde hard wire was able to pass through the CTO segment via a transseptal collateral and advanced at the ascending aorta. However, the microcatheter tip could not advance into the heavily calcified plaque of the CTO segment. Moreover, it was very difficult to catch the retrograde hard wire tip in the ascending aorta using a 10mm Gooseneck snare at the ostium of the antegrade guiding catheter due to three-dimensional size mismatch. Thereby, we attempted to cross the occluded segment directly using a long-shaft soft guidewire designed for retrograde CTO intervention (0.009 inch 330 cm). The unassisted long-shaft wire tip was pa.. Read More»
  DOI: 10.4172/2329-9517.1000233

  Abstract PDF