Journal: Cardiology Journal
Article Title: Coronary laser with simultaneous contrast injection for the treatment of stent underexpansion
doi: 10.5603/cj.96438
Figure Lengend Snippet: An 87-year-old woman admitted to the documented center due to non-ST-segment elevation myocardial infarction underwent a coronary angiogram. A severe calcified stenosis of the left anterior descending coronary artery (LAD) proximal segment was appreciated during the coronary angiogram, although the injection provoked left main (LM) dissection, which spread antegradely as well as retrogradely to the sinus of Valsalva and ascending aorta ( A ). Any additional injection was avoided, and in order to seal the dissection, the operator decided to implant a direct 3.5 × 16 mm drug eluting stent (DES) in LM-LAD after verifying the correct positioning of the guidewire into the true lumen by intravascular ultrasound (IVUS). However, an important underexpansion in the distal part of the stent was detected ( B ). Dilation with a non-compliant 3.5 × 12 mm balloon could not overcome the underexpanded point ( C ), and an intravascular lithotripsy (IVL) balloon was unable to cross the lesion. The IVUS probe did not cross the tight point either. Excimer laser coronary atherectomy 0.9 mm with a fluency and frequency of 45 mJ/mm 2 and 25 Hz, respectively, and simultaneous contrast injection was used. Afterward, the same non-compliant balloon overcame the stent underexpansion ( D ). The proximal and mid segment of the LAD was significantly diseased, so the procedure was completed by applying a cutting balloon and IVL and implanting a second DES, overlapped with the previous one. A successful angiographic result was achieved with a complete sealing of the dissection at the level of the sinus of Valsalva ( E ), and the patient had an uneventful hospital stay.
Article Snippet: Excimer laser coronary atherectomy (ELCATM Coronary Laser Atherectomy Catheter; Koninklijke Philips N.V. San Diego, CA, USA) can potentially debulk and ablate the tissue around the underexpanded stent and subsequently assist in balloon dilation within the stent as evidenced in several studies [ , ].
Techniques: Injection, Dissection