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Orbital Atherectomy in Calcified Lesion

A 71-year-old female with hypertension, hyperlipidemia, and a history of smoking had angina pectoris and was referred to our hospital. Stress MPI showed mild inferoapical ischemia and coronary angiography revealed heavily calcified RCA lesion (Figure 1).
OCT assessment of the lesion revealed more than three quadrant circumferential calcification along the entire lesion as shown in Figure 2 (A1, A2, A3, asterisks). Orbital atherectomy (OA) was performed with 1.25 mm burr at 120,000 rpm. Calcified plaque modifications after OA are shown in Figure 2 (B1, B2, B3, double arrow lines). After successful calcium debulking, we performed pre-dilation with non-compliant balloon followed by deployment of a 3.5×38 mm DES. Final post-stent OCT showed good stent apposition and expansion with minimal stent area of 6.54mm2 (Figure 2 C1, C2, C3).

Figure 2. Matching OCT frames before orbital atherectomy (A1, A2, A3), after orbital atherectomy (B1, B2, B3) and after stenting (C1, C2, C3)

OCT Pre
OCT After OA
OCT After Stent

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ModelBurst (ATM)Diameter (mm)Balloon Length (mm)              
681215202530
MINI TREK (CTO INDICATED)1.271.2
1.561.5
2.172✓*✓*
TREK2.372.25
2.672.5
2.912.75
3.113
3.53.25
3.73.5
3.943.75
4.324
4.864.5
5.365
*Only available as RX, not as OTW. Other sizes available in both versions.
Retrieved on April 07 2022 from Abbott product ordering information. Please look at the company's files for the latest available data on device configurations and avilability in your area.

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