4 years ago

Evolution of silent myocardial ischaemia prevalence and cardiovascular disease risk factor management in Type 2 diabetes over a 10-year period: an observational study

F. Perriard, V. Macioce, A. Avignon, J.-P. Daures, A. Sultan, D. Mariano-Goulart, C. Boegner
Aims To assess the evolution of silent myocardial ischaemia prevalence and of cardiovascular disease risk factor management over 10 years in people with Type 2 diabetes. Methods This repeated cross-sectional study prospectively included 770 people with Type 2 diabetes who presented at our centre in the period 1999–2009. All had at least one additional cardiovascular disease risk factor, no history of coronary disease and were screened for silent myocardial ischaemia using myocardial perfusion imaging. The prevalence of silent myocardial ischaemia, clinical and biological variables and treatments were collected and compared among participants screened in three periods: 1999 to 2002; 2003 to 2005; and 2006 to 2009. We also identified predictive factors for silent myocardial ischaemia. Results Participants had a mean ± sd age of 62.3 ± 9.3 years, 57.4% were men and the mean time from diagnosis of diabetes was 13.4 ± 9.3 years. Overall, silent myocardial ischaemia screening was positive in 13.9% of participants. This prevalence decreased sharply over the 10-year study period (22.6% in 1999–2002, 13.7% in 2003–2005 and 5.9% in 2006–2009; P<0.0001). In parallel, diastolic and systolic blood pressure, HbA1c and LDL cholesterol significantly decreased and glitazone and statin use increased (all P<0.001). Male gender, peripheral artery disease, diastolic blood pressure >80 mmHg and LDL cholesterol >2.6 mmol/l were independently associated with silent myocardial ischaemia. Further adjustment showed the screening period had a significant effect, which erased the effects of diastolic blood pressure and LDL cholesterol. Conclusions The prevalence of silent myocardial ischaemia decreased sharply over time, and control of the main cardiovascular disease risk factors improved. Although the causality link cannot be established, the present study supports current recommendations advocating glycaemic control and intensive management of cardiovascular factors instead of systematic screening.

Publisher URL: http://onlinelibrary.wiley.com/resolve/doi

DOI: 10.1111/dme.13364

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