CIRCADIAN VARIATION IN THE EFFICACY OF TISSUE-TYPE PLASMINOGEN-ACTIVATOR
CIRCADIAN VARIATION IN THE EFFICACY OF TISSUE-TYPE PLASMINOGEN-ACTIVATOR
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DOI:
10.1161/01.cir.91.5.1341
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发表时间:
1995-03-01
期刊:
影响因子:
37.8
通讯作者:
KURNIK, PB
中科院分区:
文献类型:
--
作者:
KURNIK, PB
Background The frequency of onset of acute myocardial infarction follows a circadian pattern, with a peak incidence between 6:00 AM and noon. Circadian variations have been defined for platelet aggregation, plasminogen-activator inhibitor, and a number of hemostatic and physiological factors, all of which might predispose toward clotting in the late morning and thrombolysis in the evening. Thus, the hypothesis for this retrospective analysis was that tissue-type plasminogen activator (TPA) has greater efficacy when administered between noon and midnight, as measured by coronary patency 90 minutes after initiation of treatment.Methods and Results Seven hundred twenty-eight patients were enrolled in either of two studies in which TPA was administered under a uniform protocol for the treatment of acute myocardial infarction. Of these, 692 patients had qualifying arteriograms that allowed standardized assessment by a core angiographic laboratory of the primary end point of 90-minute patency. TPA has a circadian pattern of efficacy, with greater TIMI grade 3 patency when administered between noon and midnight (P