Clinical and procedural predictors of suboptimal myocardial reperfusion in primary percutaneous coronary intervention

Area of Science:

• Cardiology
• Interventional Cardiology
• Acute Coronary Syndromes

Background:

• Suboptimal myocardial perfusion post-primary percutaneous coronary intervention (PCI) is associated with larger infarct size, left ventricular dysfunction, and increased mortality.
• Identifying predictors of suboptimal reperfusion is crucial for improving outcomes in ST-elevation myocardial infarction (STEMI) patients.

Purpose of the Study:

• To identify clinical and procedural predictors of suboptimal myocardial reperfusion, as assessed by myocardial blush grade (MBG), in patients undergoing primary PCI for STEMI.

Main Methods:

• A prospective study of 100 STEMI patients undergoing primary PCI.
• Patients were categorized based on final MBG: optimal (MBG=3) versus suboptimal (MBG≤2).
• Clinical, ECG, laboratory, and angiographic data were collected and analyzed.

Main Results:

• The suboptimal reperfusion group (n=27) showed a lower incidence of prior angina and aspirin use compared to the optimal group (n=73).
• Suboptimal reperfusion was associated with higher admission blood glucose, elevated total leucocyte count, longer reperfusion time, increased thrombus burden, higher predilatation pressure, and repeated balloon inflations.
• These differences were statistically significant (P<0.05).

Conclusions:

• Longer reperfusion time, repeated balloon inflations, high predilatation pressure (>15 ATM), high thrombus burden, lack of prior angina or aspirin use, elevated total leucocyte count (>10103/mm3), and high blood glucose level (>160mg/dl) predict persistent suboptimal myocardial reperfusion in primary PCI.
• These findings emphasize the importance of optimizing reperfusion strategies and managing risk factors during primary PCI.