Angiographic patency of streptokinase in STEMI patients: smokers vs. non-smokers

Iranna Hirapur, Srinivas Setty, Ravindran Rajendran, Manjunath Nanjappa


Background: Acute coronary syndrome is one of the leading causes of death. Smoking is known to be associated  with many influencing factors for accelerating Myocardial Infarction (MI). In a country like India, Streptokinase (SK) is used as a leading therapeutic option for the treatment of ST elevation myocardial Infarction (STEMI). SK combines with plasminogen; this SK-plasminogen complex is responsible for fibrinolysis. The aim of this study was to determine angiographic patency after SK infusion in STEMI patients and comparison between smokers and non-smokers.

Methods: In this observational, prospective and single-centre study conducted between September 2011 and April 2012, a total of 398 patients who were diagnosed with STEMI were included. Patients were divided in two groups i.e. smokers and non-smokers. The patients were treated with thrombolytic (streptokinase) therapy and evaluated for TIMI 3 flow by performing angiography within 72hours of thrombolysis with SK.

Results: Of total 398 patients, 348 (87.4%) were male. The ratio of non-smokers and smokers was 1:2. Smokers were younger than the non-smokers (48.8±10.2 vs. 54.57±9.51). Post thrombolytic therapy, patients were evaluated for TIMI flow grades. Total of 202 patients achieved TIMI 3 flow, of which 157 were smokers and 45 were non-smokers.

Conclusions: Smokers have relatively hypercoagulable state than non-smokers. Better outcome in smokers group may be because of younger age and lesser comorbidities. Smokers should be motivated and guided properly to quit smoking.


Thrombolytic therapy, Smokers, STEMI, Streptokinase

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