Hyperglycemia is an important predictor of impaired coronary flow before reperfusion therapy in ST-segment elevation myocardial infarction

J Am Coll Cardiol. 2005 Apr 5;45(7):999-1002. doi: 10.1016/j.jacc.2004.12.050.


Objectives: This study was designed to investigate whether elevated glucose is associated with impaired Thrombolysis In Myocardial Infarction (TIMI) flow before primary percutaneous coronary intervention (PCI).

Background: Reperfusion before primary PCI in patients with ST-segment elevation myocardial infarction (STEMI) is associated with an improved outcome. Hyperglycemia in patients with STEMI is associated with an adverse prognosis. Hyperglycemia may induce a pro-thrombotic state and therefore be of influence on TIMI flow before PCI.

Methods: A total of 460 consecutive patients with STEMI treated with primary PCI were included in this analysis. Hyperglycemia was defined as a glucose > or =7.8 mmol/l (140 mg/dl).

Results: Hyperglycemia was observed in 70% and TIMI flow grade 3 before primary PCI in 17% of the patients. Patients with hyperglycemia less often had TIMI flow grade 3 before primary PCI (12% vs. 28%, p < 0.001). After adjustment for differences in baseline variables, hyperglycemia was a strong predictor of absence of reperfusion before primary PCI (odds ratio 2.6, 95% confidence interval 1.5 to 4.5).

Conclusions: Hyperglycemia in patients with STEMI is an important predictor of impaired epicardial flow before reperfusion therapy has been initiated. Investigation of methods improving coronary flow before primary PCI in these patients is warranted.

MeSH terms

  • Angioplasty, Balloon, Coronary*
  • Blood Glucose
  • Case-Control Studies
  • Coronary Circulation
  • Female
  • Humans
  • Hyperglycemia / blood
  • Hyperglycemia / complications*
  • Male
  • Middle Aged
  • Myocardial Infarction / blood
  • Myocardial Infarction / complications*
  • Myocardial Infarction / physiopathology
  • Myocardial Infarction / therapy*
  • Platelet Glycoprotein GPIIb-IIIa Complex / administration & dosage
  • Predictive Value of Tests
  • Preoperative Care
  • Randomized Controlled Trials as Topic
  • Tirofiban
  • Tyrosine / administration & dosage
  • Tyrosine / analogs & derivatives*


  • Blood Glucose
  • Platelet Glycoprotein GPIIb-IIIa Complex
  • Tyrosine
  • Tirofiban