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ORIGINAL ARTICLE
Year : 2016  |  Volume : 2  |  Issue : 2  |  Page : 103-109

Streptokinase versus recombinant tissue-type plasminogen activator for thrombolysis of mechanical prosthetic heart valve thrombosis


Department of Cardiology, All Institute of Medical Sciences, New Delhi, India

Correspondence Address:
Nilkanth Chandrakant Patil
Senior Resident, Department of Cardiology, All India Institute of Medical Sciences, New Delhi-110029
India
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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/2395-5414.191520

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Aims and Objectives: This study was designed to compare streptokinase (STK) versus recombinant tissue-type plasminogen activator (rt-PA) for thrombolysis in patients with prosthetic heart valve thrombosis (PHVT). Background: Optimal management of PHVT remains controversial. Thrombolytic therapy is a reasonable alternative to surgery. Numerous thrombolytic protocols with STK, urokinase, and rt-PA have been used over the past 40 years. So far there is a lack of consensus on the ideal thrombolytic agent for PHVT. There are no major studies comparing efficacy of STK versus rt-PA. Methods and Results: Sixty patients who underwent thrombolysis for PHVT over 1 year were studied. Forty-eight patients were thrombolysed with STK, whereas 12 patients received rt-PA. Overall 68.33% (41/60) patients showed complete response (CR), whereas 85% (51/60) showed some improvement in hemodynamics, with no significant difference in efficacy according to age, sex, duration from surgery, New York Heart Association Class III–IV, presence of atrial fibrillation, type of valve, or history of stroke. Overall 10% patients developed major complications with mortality of 5%. CR to thrombolytic therapy was numerically better with STK (72.9% vs. 50%; P = 0.12) and mortality was significantly higher in rt-PA (16.6% vs. 2%, P = 0.038). Mean duration of successful thrombolysis was significantly longer with STK as compared to rt-PA (22.96 ± 19.2 vs. 3 h). Conclusion: STK use as compared to rt-PA was associated with numerically more successful thrombolysis and significant lower mortality, hence may be optimal for elective thrombolysis.


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