A new analysis of 12 studies involving 3,633 people with coronary artery disease compared two types of drug-coated balloons used to reopen blocked heart arteries. One balloon is coated with sirolimus, the other with paclitaxel. Both are used to treat in-stent restenosis, a condition where a previously placed stent becomes narrowed again.
The review found that the two balloons performed similarly on key outcomes such as the need for repeat procedures, heart attacks, stent clots, and death. There were no notable differences in target lesion failure or target lesion revascularization. However, one angiographic measure, the minimal lumen diameter after the procedure, was slightly smaller with the sirolimus balloon. The clinical importance of this difference is unclear.
The analysis was a systematic review with GRADE assessment, which is a high-quality method for summarizing evidence. The researchers noted low heterogeneity for most outcomes, meaning the studies were consistent. No major safety concerns were reported.
Readers should know that this is a pooled analysis of existing studies, not a new trial. The findings suggest that both balloon types are reasonable options, and the choice may depend on individual patient factors. As always, treatment decisions should be made with a doctor.