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The effect of lipoprotein-a on thrombolytic therapy and spontaneous reperfusion in acute myocardial infarction. A
S Dagdelen1, N Eren, I Akdemir
1Kosuyolu Heart and Research Hospital, Istanbul, Turkey. sinandagdelen@hotmail.com
Background:
To evaluate the role of serum lipoprotein-a (Lp-a) levels on the success of thrombolytic therapy (TT) in patients with acute myocardial infarction (MI).
Patients:
56 patients randomly allocated into 2 groups (A and B) with an approximately 1 to 2 ratio. Group A consisted of 18 patients who received 1,5 million IU streptokinase. Group B: 38 patients receiving 100 mg t-PA totally and Group C: 22 patients who did not received any TT as controls. All patients had undergone coronary angiography in the first 7 days and the degree of TIMI flow was determined in the infarct related artery with TIMI-0 and I being considered as unsuccessful perfusion, whereas TIMI-II and III as successful. Lp-a level gs;30 mg/dl was considered as high Lp-a level.
Results:
Patency rates were similar in Group A and B, in cases with high or low Lp-a levels (p>0.05 for both). In Group C patency rate was found significantly higher in patients with high Lp-a level compared to patients with low Lp-a (p<0.01). Lp-a level in Group C was similar with Group A and B (p>0.05). The time interval for coronary angiography was similar in all groups (p>0.05 for all).
Conclusions:
Lp-a level does not effect the reperfusion outcome of TT in patients with MI. However in those patients who not received TT, spontaneous reperfusion rate was found significantly higher in patients with low Lp-a level compared to those with high Lp-a level.
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