Recruitable collateral blood flow index predicts coronary instent restenosis after percutaneous coronary intervention

Coronary collaterals remain recruitable after percutaneous intervention.

BACKGROUND Rapid loss of collateral support has been reported after percutaneous coronary intervention (PCI), leaving the myocardium susceptible to subsequent infarction. However, well-developed collaterals have been found in normal hearts, suggesting that collaterals exist even in the absence of an ischemic stimulus. We assessed the plasticity and determinants of collateral supply after PCI. ...

In stent restenosis after percutaneous coronary intervention

Collateral flow and restenosis: appreciating hydraulics and outcomes of percutaneous coronary intervention.

methods (balloons with jets, leaks or even needles, coated stents, etc.) are too rough for the tiny endothelial and subendothelial tissues. Despite reports about the feasibility and safety of different local drug delivery devices, their clinical effectiveness has yet to be proved. Increased risk of arterial thrombosis after local delivery of some drugs is one major issue, but probably the most ...

Coronary Collateral Blood Flow

Background. Although aspirin exerts beneficial antiplatelet activity in patients with coronary artery disease, cyclooxygenase blockade produced by aspirin causes a potentially deleterious effect by interrupting endothelial production of prostacyclin. Collateral vessels that develop in response to coronary occlusion display prominent endothelial cell proliferation and undergo vasoconstriction in...

The Predictive Value of ΣΔST/ΔHR Index for Restenosis after Percutaneous Coronary Intervention

OBJECTIVE To find out the predictive value of the ΣΔST/ΔHR index for restenosis after percutaneous coronary intervention (PCI). METHOD Subjects of this research were patients who participated in a cardiac rehabilitation (CR) program as six to eight weeks of a hospital-based program after receiving PCI to treat acute coronary syndrome (ACS). The patients received coronary angiography (CAG) at ...