miércoles, 21 de enero de 2015

Comparison of risks associated with different sulfonylureas

Comparison of risks associated with different sulfonylureas

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Comparison of risks associated with different sulfonylureas

Meta-analysis finds differences in all-cause and cardiovascular-related mortality
Sulfonylureas are common second-line options for management of type 2 diabetes; however, they are associated with a higher risk of cardiovascular events compared with other antidiabetic drugs. Since tissue selectivity and risk of hypoglycaemia differ among sulfonylureas, we aimed to assess whether mortality and the risk of cardiovascular events also varies.

We searched Medline and Embase from inception to June 11, 2014, to identify controlled studies reporting the risk of all-cause mortality, cardiovascular-related mortality, or myocardial infarction for at least two sulfonylureas. We examined differences in cardiovascular event risk among sulfonylureas with random effects models for direct pairwise comparisons and network meta-analyses to incorporate direct and indirect data.

14 970 (9%) of 167 327 patients in 18 studies died: 841 (4%) of 19 334 gliclazide users, 5482 (11%) of 49 389 glimepiride users, 2106 (15%) of 14 464 glipizide users, 5296 (7%) of 77 169 glibenclamide users, 1066 (17%) of 6187 tolbutamide users, and 179 (23%) of 784 chlorpropamide users. Inconsistency was low for the network meta-analysis of all-cause mortality, and the relative risk of death compared with glibenclamide was 0·65 (95% credible interval 0·53–0·79) for gliclazide, 0·83 (0·68–1·00) for glimepiride, 0·98 (0·80–1·19) for glipizide, 1·13 (0·90–1·42) for tolbutamide, and 1·34 (0·98–1·86) for chlorpropamide. Similar associations were noted for cardiovascular-related mortality: the relative risk compared with glibenclamide was 0·60 (95% credible interval 0·45–0·84) for gliclazide, 0·79 (0·57–1·11) for glimepiride, 1·01 (0·72–1·43) for glipizide, 1·11 (0·79–1·55) for tolbutamide, and 1·45 (0·88–2·44) for chlorpropamide.

Gliclazide and glimepiride were associated with a lower risk of all-cause and cardiovascular-related mortality compared with glibenclamide. Clinicians should consider possible differences in risk of mortality when selecting a sulfonylurea.
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Simpson SH, Lee J, Choi S, et al. Mortality risk among sulfonylureas: a systematic review and network meta-analysis. Lancet Diabetes Endocrinol. 2015;3:43-51.

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