Crush Stentleme Teknikleri
Özet
Gerçek koroner bifurkasyon lezyonlarının tedavisinde uygulanan crush stentleme teknikleri, perkütan koroner girişimlerin en karmaşık konuları arasında yer almaktadır. Klasik crush tekniği, yan dal ostiyumunu daha iyi kaplayarak restenoz oranlarını azaltmak amacıyla geliştirilmiş olsa da, düşük final kissing balon dilatasyonu (FKBI) başarısı ve ana daldaki yoğun metal yükü sebebiyle günümüzde tavsiye edilmemektedir. Bu yöntemin dezavantajlarını aşmak adına step crush, mini-crush, reverse crush ve nano-crush gibi çeşitli modifikasyonlar geliştirilmiştir. Özellikle double-kissing (DK) crush tekniği, %100'e ulaşan FKBI başarısı, düşük majör olumsuz kardiyak olay (MACE) ve stent trombozu oranları ile öne çıkmaktadır. Avrupa Kardiyoloji Derneği revaskülarizasyon kılavuzlarında Sınıf IIb düzeyinde önerilen tek çift stentleme yöntemi DK crush tekniğidir. Karmaşık bifurkasyon lezyonlarında tedavi stratejisi; lezyon geometrisi, karmaşıklığı ve operatör deneyimi doğrultusunda titizlikle planlanmalıdır. Girişimsel işlemler sırasında predilatasyon, proksimal optimizasyon tekniği (POT) ve doğru hücreden yeniden telleme gibi aşamaların eksiksiz uygulanması prosedürel başarıyı doğrudan etkilemektedir. Sonuçları optimize etmek ve olası komplikasyonların önüne geçmek amacıyla IVUS, OCT ve FFR gibi intravasküler görüntüleme ve fizyoloji araçlarının kullanılması büyük önem taşımaktadır.
Crush stenting techniques applied in the treatment of true coronary bifurcation lesions represent one of the most challenging topics in percutaneous coronary interventions. Although the classic crush technique was developed to reduce restenosis rates by covering the side branch ostium more effectively, it is no longer recommended today due to its low final kissing balloon inflation (FKBI) success and high proximal metal load. To overcome these limitations, various modifications such as step crush, mini-crush, reverse crush, and nano-crush have been introduced. In particular, the double-kissing (DK) crush technique stands out with an FKBI success rate reaching 100%, alongside significantly lower major adverse cardiac event (MACE) and stent thrombosis rates. The DK crush technique is currently the only two-stent method recommended with a Class IIb status in the European Society of Cardiology revascularization guidelines. Treatment strategies for complex bifurcation lesions must be meticulously planned based on lesion geometry, complexity, and operator experience. Perfect execution of steps such as predilation, proximal optimization technique (POT), and rewiring through the correct non-distal stent cell directly determines procedural success. Utilizing intravascular imaging and physiology tools like IVUS, OCT, and FFR is crucial to optimizing clinical outcomes.
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