Nano Crush Stentleme Tekniği

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Ali Kemal Kalkan
Ceren Yıldırım Karakan

Özet

Koroner bifurkasyon lezyonlarının klinik yönetiminde karşılaşılan teknik zorlukları ve olumsuz klinik sonlanımları en aza indirmek amacıyla geliştirilen yenivelçi Nano Crush stentleme tekniği, adım adım uygulama basamakları, avantajları ve dezavantajları ile incelenmektedir. Geleneksel çift stent tekniklerinden türetilen Nano Crush yöntemi, yan dal stentinin ana damara olabildiğince minimum düzeyde taşmasını hedefleyerek neokarina bölgesindeki metal yükünü azaltmayı amaçlar. Dokümanda, Ray ve arkadaşlarının tanımladığı temel Nano Crush tekniğinin yanı sıra, Rigatelli ve arkadaşlarının ana damar çapıyla bire bir uyumlu ilk balon dilatasyonu, snuggle kissing balon tekniği ve final proksimal optimizasyon tekniği (POT) ile modifiye ettiği "nano inverted T stentleme" varyasyonu ile Morris ve arkadaşlarının double kissing (DK) balon dilatasyonunu entegre ettiği "DK-nano Crush" teknikleri kapsamlı bir şekilde karşılaştırılmaktadır. Bu tekniklerin, klasik Crush ve Culotte yöntemlerine kıyasla daha kısa prosedür süresi, daha düşük kontrast madde miktarı ile radyasyon maruziyeti, kılavuz tel ile yan dala yeniden geçiş (rewire) kolaylığı ve final kissing balon dilatasyonunun başarı şansını artırması gibi çok önemli klinik avantajları bulunmaktadır. Bununla birlikte, yan dal ostiumunun tam kavranamaması durumunda stentsiz alan kalma riski gibi bazı teknik zorluklar da barındırmaktadır. Sonuç olarak, akut koroner sendrom ve kardiyojenik şok gibi kritik hasta gruplarında da güvenli ve pratik bir alternatif sunan bu yöntemin uzun dönemli gerçek dünya klinik verilerini değerlendirmek adına daha geniş serili büyük randomize çalışmalara ihtiyaç duyulmaktadır.

Focusing on minimizing technical challenges and adverse clinical outcomes encountered in the management of coronary bifurcation lesions, the innovative Nano Crush stenting technique is analyzed along with its step-by-step application, advantages, and limitations. Derived from traditional double stenting techniques, the Nano Crush method aims to reduce the metal load in the neocarina by ensuring minimal protrusion of the side branch stent into the main vessel. The document compares the basic Nano Crush technique defined by Ray et al. with the "nano inverted T stenting" modified by Rigatelli et al.—which utilizes a 1:1 ratio main vessel balloon, snuggle kissing balloon dilatation, and a final proximal optimization technique (POT)—and the "DK-nano Crush" technique introduced by Morris et al., which integrates double kissing (DK) balloon dilatation. Compared to classic Crush and Culotte methods, these techniques offer significant clinical advantages, including shorter procedure times, reduced contrast medium volume and radiation exposure, easier rewiring of the side branch through fewer stent layers, and higher rates of successful final kissing balloon dilatation. However, specific technical challenges exist, such as the potential risk of leaving an unstented area at the side branch ostium if precise alignment is not achieved. In conclusion, while providing a practical and safe alternative even in acute coronary syndrome and cardiogenic shock cases, larger randomized trials and long-term real-world data are still required to fully evaluate the clinical efficacy of this technique.

Referanslar

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Raphael CE, O’Kane PD, Johnson TW et al. Evolution of the Crush Technique for Bifurcation Stenting. JACC Cardiovasc Interv. 2021 Nov 8;14(21):2315-2326.

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Raphael CE, O'Kane PD, Johnson TW et al. Evolution of the Crush Technique for Bifurcation Stenting. JACC Cardiovasc Interv. 2021 Nov 8;14(21):2315-2326. doi: 10.1016/j.jcin.2021.08.048.

Ray S, Bandyopadhyay S, Bhattacharjee P et al. Nano-crush technique in narrow-angle (<70°) bifurcation: bench test, CT reconstruction, fluid dynamics, and clinical outcomes. Minerva Cardiol Angiol. 2022 Aug;70(4):459-467.

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5 Aralık 2022

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