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Coronary calcified plaques may affect both procedural and long-term outcomes of coronary stenting, resulting in impaired device deliverability, disruption of stent coatings, and poor stent expansion and apposition. A novel intravascular lithotripsy (IVL) method was introduced and recently tested in catheterization laboratories (ShockWave). A 62-year-old male presented with severely calcified proximal left anterior descending artery/diagonal true bifurcation stenosis (Medina 1,1,1) (Fig. 1A, B). The operator’s strategy was to perform IVL after small balloon pre-dilation (NC Emerge 2.0 × 12 mm, Boston Scientific Co.), but advancement of the ShockWave (ShockWave Medical Co.) balloon was unsuccessful due to the unfavorable location of the calcium. After several pre-dilations with non-compliant balloons (2.0 mm, 2.5 mm, and 3.0 mm; NC Emerge, Boston Scientific Co.) inflated to 20 atm, the artery was not fully opened and IVL advancement failed. At this stage, the operators decided to perform high-speed rotational atherectomy with 1.5 burr. Subsequently, due to residual large calcific plaque burden after rotablation, the IVL balloon (3.5 × 12 mm) was placed within the lesion and 80 seconds of wave was applied to modify the plaque (Fig. 1C, D). Finally, the diagonal branch was protected with the wire and regular angioplasty was performed. The well-known classic double-kissing crush technique was implemented for the patient. Operators deployed Orsiro 2.5 × 22 mm (15 atm) (Biotronik) in the diagonal branch followed by another Orsiro stent 3.5 × 22 mm (14 atm) (Biotronik) in the left anterior descending artery. The final proximal optimalization technique with 3.5 × 8 mm (16 atm) (NC Emerge; Boston Scientific Co.) was used and achieved an excellent angiographic result (Fig. 1E, F).

cardiology journal

Synergistic application of high-speed rotational atherectomy and intravascular lithotripsy for a severely calcified undilatable proximal left anterior descending coronary artery bifurcation lesion: Case of rotalithoplasty-facilitated DK-CRUSH