Abstract
Background
Animal models have demonstrated that sulfonylureas increase the size of myocardial
infarction; however, data in humans is scarce. This study evaluated the association
between sulfonylurea use and infarct size in diabetes patients with ST-elevation myocardial
infarction (STEMI).
Methods
Consecutive STEMI patients admitted in Edmonton, Canada between 2006 and 2011 were
enrolled in a regional prospective registry program. Patients with type 2 diabetes
were identified from this group and the maximum recorded troponin I (max cTnI) within
the first 48 h of chest pain onset was used as the primary outcome to quantify infarct size. The
relationship between preadmission sulfonylurea use and max cTnI was assessed using
multivariable linear regression to adjust for patient demographics, cardiovascular
risk factors, clinical data on admission, ischemia time, reperfusion therapy and preadmission
drugs.
Results
There were 560 STEMI patients with type 2 diabetes; mean (standard deviation; SD)
age was 63.3 (12.8) years, 395 (70.5%) were male, 216 (38.6%) received primary percutaneous
intervention, and 211 (37.7%) received thrombolysis. The max cTnI was higher in 146
sulfonylurea users compared to 414 non-sulfonylurea users (mean (SD): 49.8 (74.3)
ng/mL versus 39.9 (50.4) ng/mL, respectively; adjusted between-group difference: 12.9 ng/mL; 95% CI 0.3–25.5; p = 0.044).
Conclusion
This study adds further evidence to the proposed causal relationship between sulfonylureas
and adverse cardiovascular events by observing a significant difference in infarct
size among type 2 diabetes patients presenting with STEMI. Clinicians should consider
this association when prescribing sulfonylureas to manage patients with type 2 diabetes.
Keywords
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Article info
Publication history
Published online: August 31, 2015
Accepted:
August 27,
2015
Received:
June 19,
2015
Identification
Copyright
© 2015 Elsevier Ireland Ltd. Published by Elsevier Inc. All rights reserved.