Kiemeneij F, Suwarganda J S, van der Wieken L R
Department of Cardiology, Onze Lieve Vrouwe Gasthuis, Amsterdam, The Netherlands.
Cathet Cardiovasc Diagn. 1990 Apr;19(4):289-93. doi: 10.1002/ccd.1810190414.
Percutaneous transluminal coronary angioplasty (PTCA) for total occlusions frequently fails, because the guidewire fails to pass the occlusion. With the use of the Probe exchange catheter (PEC), however, stiffness of the guidewire is increased and a higher pushability is obtained in order to manipulate the guidewire beyond the lesion. Once the guidewire has passed, the PEC is advanced and a non-over-the-wire dilatation catheter can be introduced through the PEC. This paper describes the technique in a representative case. The results of this technique in 19 consecutive patients with class III-IV/IV(NYHA) angina due to an occluded coronary artery are presented. In 16 patients the PEC reached the lesion (84%) and in all these patients the guidewire could pass the occlusion. A successful PTCA was performed in 14 patients (74%).
经皮腔内冠状动脉成形术（PTCA）治疗冠状动脉完全闭塞常常失败，因为导丝无法通过闭塞病变。然而，使用探针交换导管（PEC）时，导丝的硬度增加，并且在将导丝操控通过病变时可获得更高的推送性。一旦导丝通过，将PEC推进，并且可通过PEC引入非导丝推送式扩张导管。本文在一个典型病例中描述了该技术。介绍了该技术应用于19例因冠状动脉闭塞导致III-IV/IV级（纽约心脏协会）心绞痛的连续患者的结果。16例患者的PEC到达病变（84%），并且在所有这些患者中导丝均可通过闭塞病变。14例患者（74%）成功进行了PTCA。
