One-Year Follow-Up Results From the Observational, Multicenter, Prospective, and Controlled Registry: The WALTZ...

Area of Science:

• Cardiovascular Medicine
• Interventional Cardiology
• Biomaterials in Medicine

Background:

• Bare-metal stents (BMS) remain a crucial option for coronary artery revascularization.
• Evaluating novel BMS designs in diverse patient populations is essential for optimizing clinical outcomes.
• The study addresses the need for long-term safety and efficacy data on new stent technologies.

Purpose of the Study:

• To assess the 1-year follow-up results of a new cobalt chromium BMS in an all-comers population.
• To evaluate the incidence of major adverse cardiac events (MACE) including cardiac death, myocardial infarction (MI), and target lesion revascularization (TLR).
• To analyze the impact of revascularization completeness on clinical outcomes.

Main Methods:

• Prospective, multicenter registry of 201 consecutive patients undergoing coronary stent implantation.
• Inclusion of patients with complex coronary artery disease, including multiple-vessel and unprotected left main disease.
• Primary endpoint: MACE. Secondary analysis: completeness of revascularization using residual SYNTAX or ERACI scores.

Main Results:

• At a mean follow-up of 376 days, MACE occurred in 10.4% of patients.
• Death + MI + cardiovascular accident (CVA) was 3%; cardiac death + MI + CVA was 1.5%.
• A residual ERACI score ≤5 was associated with 98% event-free survival (P < .04).

Conclusions:

• This novel BMS design demonstrated a low incidence of adverse events at 1 year in an all-comers population.
• The low event rate was primarily attributed to a low incidence of coronary restenosis.
• Completeness of revascularization is a significant factor in achieving favorable long-term outcomes.