Percutaneous transluminal coronary angioplasty more than twice for the same coronary lesion

Area of Science:

• Cardiology
• Interventional Cardiology
• Vascular Biology

Background:

• Restenosis remains a significant challenge after percutaneous transluminal coronary angioplasty (PTCA).
• Understanding predictors of restenosis after multiple PTCAs is crucial for optimizing patient outcomes.
• Previous studies have focused on single or limited repeat interventions.

Purpose of the Study:

• To evaluate the incidence and predictors of restenosis following three or more PTCAs for the same coronary lesion.
• To identify factors associated with restenosis in patients undergoing complex, repeat interventions.

Main Methods:

• A retrospective study of 23 patients who underwent three or more PTCAs for a single coronary lesion.
• Analysis of clinical data, including symptom-free interval before the last PTCA and balloon size used.
• Assessment of restenosis rates and clinical outcomes, including myocardial infarction and need for surgery.

Main Results:

• The primary success rate for all PTCAs was 100%.
• Overall restenosis rate after the last PTCA was 26.1% (6 of 23 patients).
• A shorter symptom-free interval (≤3 months) before the last PTCA was associated with a higher risk of restenosis (38.5% vs. 10% in patients with longer intervals).
• The use of a larger balloon during the last PTCA did not show a clear protective effect against restenosis in all subgroups.

Conclusions:

• Restenosis is a considerable risk after multiple PTCAs for the same lesion.
• The duration of the symptom-free interval prior to the final intervention is a key predictor of restenosis.
• Further research is needed to refine strategies for managing complex coronary lesions requiring multiple interventions.