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Open Access Does impairment of renal and hepatic function influence the metabolism of thrombolytics in patients with myocardial infarction?

Thrombolytic agents activate plasminogen and induce a systemic fibrinolytic and anticoagulant state. Two thrombolytic drugs are used frequently in practice: streptokinase (SK) and alteplase (t-PA). Streptokinase mainly undergoes renal elimination with a half-life of 11–17 min, while alteplase is eliminating by the liver with a half-life of 4–6 min. Our goal was to examine whether renal and hepatic function influence the elimination and metabolism of thrombolytics and the efficacy of percutaneous coronary intervention (PCI) after using alteplase or streptokinase. 416 patients with myocardial infarction (MI) were treated from January 2001 to December 2003 (228 male and 189 female). Alteplase was used in 9 men and 6 women (mean age: 53.88 ± 9.61 vs. 65.33 ± 9.87 years, p = 0.07). Patients who underwent rescue PCI after administration of alteplase had slightly higher hepatic enzyme levels/alanine transaminase (ALT): 47.85 vs. 41.4 U/l; gamma-glutamyl transpeptidase (GGT): 69.5 vs. 44.8 U/l/. All patients treated with alteplase survived, rescue PCI was done in 8 cases. Streptokinase was used in 36 men and 28 women (mean age: 63.33 ± 10.51 vs. 63 ± 12.03 years, p = 0.9). We did not find a difference between serum creatinine levels of patients who received streptokinase and underwent PCI as compared to those who had not. Rescue PCI was done in 16 cases. 12 patients died in this group. In conclusion we have not found a significant correlation between the use of the thrombolytics and hepatic or renal function; this could indicate that such a slight impairment of liver and renal function does not influence pharmacokinetic properties of thrombolytics.

Document Type: Research Article

Affiliations: 1: 3rd Department of Internal Medicine, Medical and Health Science Center, University of Debrecen, Debrecen, Hungary 2: 3rd Department of Internal Medicine, Medical and Health Science Center, University of Debrecen, Nagyerdei krt. 98, Debrecen, 4032, Hungary, Email: [email protected]

Publication date: March 1, 2008

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