Association between white blood cell count and mortality rate in first 7 days after acute myocardial infarction at Shariati hospital, Tehran

test. Findings: 66.9% of patients were male and 33.1% of them were female. The mean WBC count was 15200 per µl in the dead patients and was 11700 per µl in the survived patients. Total mortality rate in first seven days after AMI was 11.3%. Mortality rate in the group with WBC count under 6000 was 0%, in the group with WBC count between 6000 and 12000 was 8.3%, in the group with WBC count between 12000 and 20000 was 16.7% and among the last group with WBC count> 20000 was 20.7%. There was a significant association between mortality rate and WBC count (P<0.001). With regards to the gender and age, no significant association was seen between WBC count and mortality rate after AMI. Conclusion: According to the findings, WBC count appears to be a simple and important marker to determine the risk and prognosis of patients with AMI.