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Relationship between initial white blood cell counts, stage of acute myocardial infarction evolution at presentation, and incidence of Thrombolysis In Myocardial Infarction-3 flow after streptokinase.

Abstract：

BACKGROUND:The initial white cell counts in patients with acute myocardial infarction (AMI) may reflect the stage of AMI evolution, and may also be related to the efficacy of thrombolytic agents in recanalizing occluded epicardial arteries. METHODS:In 312 patients with a first AMI, we divided the initial white cell counts into quartiles and investigated their relationship with the time to treatment and the incidence of Thrombolysis In Myocardial Infarction (TIMI)-3 flow at 90 minutes after commencement of streptokinase. RESULTS:A longer time from symptom onset to treatment was independently associated with a higher neutrophil count and a lower non-neutrophil count. These times were 2.6, 2.9, and 3.8 hours, respectively, in the lowest, combined second and third (ie, middle), and highest neutrophil quartiles (P =.003), and 4.3, 3, and 1.9 hours, respectively, in the lowest, combined middle, and highest non-neutrophil quartiles (P <.0001). TIMI-3 flow was achieved in 44% of the lowest total white cell quartile, 41% of the combined middle quartile, and 60% of the highest quartile (P =.05). The corresponding figures were 47%, 49%, and 46% (P =.657) for the neutrophil quartiles, and 32%, 46%, and 68% for the non-neutrophil quartiles (P =.001). On multivariable analysis, the incidence of TIMI-3 flow was independently and positively associated with the initial non-neutrophil count. Patients with non-neutrophil counts in the highest quartile had a higher incidence of TIMI-3 flow than those in the lowest quartile (odds ratio 2.86, 95% CI 1.32-6.23, P =.008). CONCLUSIONS:A longer time from symptom onset to thrombolysis for AMI is associated with a higher neutrophil count and a lower non-neutrophil count at presentation. A higher neutrophil count is not associated with worse epicardial blood flow at 90 minutes after streptokinase, and a higher non-neutrophil count predicts a greater likelihood of achieving TIMI-3 flow.

journal_name

Am Heart J

journal_title

American heart journal

authors

Wong CK,French JK,Gao W,White HD

doi

10.1067/mhj.2003.64

subject

Has Abstract

pub_date

2003-01-01 00:00:00

pages

95-102

issue

eissn

0002-8703

issn

1097-6744

pii

S0002870302947733

journal_volume

145

pub_type

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Relationship between initial white blood cell counts, stage of acute myocardial infarction evolution at presentation, and incidence of Thrombolysis In Myocardial Infarction-3 flow after streptokinase.