Rotational vs. Orbital Atherectomy | 合法醫療器材資訊網

由MIVidovich著作—Orbitalatherectomyhastheadvantageofbeingabletotreatlargerdiametervesselsusingthehigh-speedfeaturewithouttheneedtoupsizethe ...

Mladen I. Vidovich, MD, FSCAI; Faisal Latif, MD, FSCAI

None of us needs to be reminded that the complexity of a percutaneous coronary intervention (PCI) has increased and how rarely we encounter Type A lesions in daily practice. In a study, intravascular ultrasound (IVUS) revealed the presence of coronary calcification in 73 percent of target lesions. In contrast, the overall sensitivity of coronary angiography in detecting the presence of target lesion calcification was only 48 percent.1 Moderate or severe coronary artery calcium (CAC) is associated with increased target lesion failure, death, myocardial infarction (MI), and revascularization.2,3 Calcification also makes stent delivery challenging. Additionally, optimal stent expansion is difficult to achieve without vessel preparation. For all these reasons, optimal CAC lesion preparation has become the “sine qua non” ...