Short-term changes in myocardial perfusion of the predominant donor vessel after percutaneous coronary intervention for chronic total occlusion.

ABSTRACT:

Background

It remains unclear how rapidly the collateral circulation regresses after percutaneous coronary intervention (PCI) of chronic total occlusion (CTO). This study aimed to investigate the short-term changes of myocardial perfusion in the predominant donor vessel after successful CTO PCI.

Methods

A total of 68 patients who underwent single-photon emission computerized tomography (SPECT) assessment before and within 24-72 hours after successful CTO PCI were retrospectively included into this study. The coronary flow reserve (CFR) in the CTO territory and the predominant donor vessel territory were analyzed.

Results

The average age of the included patients was 57.1±12.5 years old, and 88.2% were male. In the CTO territory, the CFR increased from 1.80±0.99 at base

SUBMITTER: Gao W 

PROVIDER: S-EPMC11994573 | biostudies-literature | 2025 Apr

REPOSITORIES: biostudies-literature