The Impact of Prediabetes on Two-Year Clinical Outcomes in Patients Undergoing Elective Percutaneous Coronary Intervention
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Purpose: Prediabetes is an independent risk factor for cardiovascular disease. However, data on the long term adverse clinicaloutcomes of prediabetic patients undergoing percutaneous coronary intervention (PCI) with drug-eluting stents (DESs) arescarce. Materials and Methods: The study population comprised 674 consecutive non-diabetic patients who underwent elective PCI betweenApril 2007 and November 2010. Prediabetes was defined as hemoglobin A1c (HbA1c) of 5.7% to 6.4%. Two-year cumulativeclinical outcomes of prediabetic patients (HbA1c of 5.7% to 6.4%, n=242) were compared with those of a normoglycemic group(<5.7%, n=432). Results: Baseline clinical and angiographic characteristics were similar between the two groups, except for higher glucose levels(104.8±51.27 mg/dL vs. 131.0±47.22 mg/dL, p<0.001) on admission in the prediabetes group. There was no significant differencebetween the two groups in coronary angiographic parameters, except for a higher incidence of diffuse long lesion in the prediabetesgroup. For prediabetic patients, trends toward higher incidences of binary restenosis (15.6% vs. 9.8 %, p=0.066) and late loss(0.71±0.70 mm vs. 0.59±0.62 mm, p=0.076) were noted. During the 24 months of follow up, the incidence of mortality in prediabeticpatients was higher than that in normoglycemic patients (5.5% vs. 1.5%, p=0.007). Conclusion: In our study, a higher death rate and a trend toward a higher incidence of restenosis in patients with prediabetes upto 2 years, compared to those in normoglycemic patients, undergoing elective PCI with contemporary DESs.
Abstract
Purpose: Prediabetes is an independent risk factor for cardiovascular disease. However, data on the long term adverse clinicaloutcomes of prediabetic patients undergoing percutaneous coronary intervention (PCI) with drug-eluting stents (DESs) arescarce. Materials and Methods: The study population comprised 674 consecutive non-diabetic patients who underwent elective PCI betweenApril 2007 and November 2010. Prediabetes was defined as hemoglobin A1c (HbA1c) of 5.7% to 6.4%. Two-year cumulativeclinical outcomes of prediabetic patients (HbA1c of 5.7% to 6.4%, n=242) were compared with those of a normoglycemic group(<5.7%, n=432). Results: Baseline clinical and angiographic characteristics were similar between the two groups, except for higher glucose levels(104.8±51.27 mg/dL vs. 131.0±47.22 mg/dL, p<0.001) on admission in the prediabetes group. There was no significant differencebetween the two groups in coronary angiographic parameters, except for a higher incidence of diffuse long lesion in the prediabetesgroup. For prediabetic patients, trends toward higher incidences of binary restenosis (15.6% vs. 9.8 %, p=0.066) and late loss(0.71±0.70 mm vs. 0.59±0.62 mm, p=0.076) were noted. During the 24 months of follow up, the incidence of mortality in prediabeticpatients was higher than that in normoglycemic patients (5.5% vs. 1.5%, p=0.007). Conclusion: In our study, a higher death rate and a trend toward a higher incidence of restenosis in patients with prediabetes upto 2 years, compared to those in normoglycemic patients, undergoing elective PCI with contemporary DESs.
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