Abstract:
Objective
To evaluate the safety and efficacy of Shockwave intravascular lithotripsy(IVL) in the interventional treatment of acute coronary syndrome (ACS) with severe coronary calcified lesions.
Methods
A total of 36 patients with ACS who underwent interventional treatment of coronary artery IVL at the Fifth Affiliated Hospital of Sun Yat-sen University from September 2022 to December 2023 were enrolled in this study.Baseline data, procedural data, coronary imaging, and major cardiovascular events during follow-up through December 2024 were collected to evaluate the safety and efficacy of IVL in the treatment of ACS with severe coronary calcified lesions.
Results
Among the 36 patients, 27 were males and 9 were females; the mean age was 66.08±8.36.There were 26 cases (72.2%) with unstable angina,8 cases (22.2%) with NSTEMI, and 2 cases (5.6%) with STEMI.Among target vessels treated with IVL,3 cases (8.3%) involved the left main coronary artery, 26 cases (72.2%) were in the left anterior descending artery, 1 case (2.8%) was in the circumflex artery, and 6 cases (16.7%) were in the right coronary artery.All cases underwent intravascular imaging evaluation.All target vessels demonstrated severe calcification, with 14 cases (38.9%) exhibiting grade Ⅲ and 22 cases (61.1%) grade Ⅳ calcified lesions.Shockwave balloon was utilized alone in 14 cases (38.9%) and combined with cutting balloon in 22 cases (61.1%).Successful deployment of drug-eluting stents (DES) or drug-coated balloons (DCB) was achieved in all cases, with postprocedural outcomes demonstrating residual stenosis <40%, TIMI flow grade 3, minimum lumen area (MLA)of 8.59±2.38 mm², and procedural success rate of 100%.No complications, including slow-flow/no-reflow phenomenon, coronary perforation, significant dissection, or acute thrombosis, were observed.Postoperative coronary imaging follow-up performed in 16 cases (44.4%) at a median interval of 12 months (IQR 5.5-12.5)demonstrated no target vessel lesion progression.During the median follow-up of 20 months (IQR 13-21), no target vessel-related rehospitalizations were documented.
Conclusion
The new technique of IVL is safe and effective in the treatment of coronary artery calcification lesions.
Key words:
Shockwave balloon,
Intravascular lithotripsy,
Intravscular shockwave therapy,
Coronary artery calcification
Huifang Lu, Xiaoliang Wei, Lizheng Song, Zhizhuang Zou, Bairong Chen. The safety and efficacy of shockwave balloon in the interventional treatment of acute coronary syndrome(ACS) with severe coronary calcified lesions[J]. Chinese Journal of Interventional Radiology(Electronic Edition), 2025, 13(02): 128-134.