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J Korean Soc Emerg Med > Volume 6(2); 1995 > Article
Journal of The Korean Society of Emergency Medicine 1995;6(2): 459-462.
THE SIGNIFICANCE OF YAMAGUCHI INDEX IN PATIENTS WITH ACUTE PARAQUAT POISONING
Seong Joong Kim1, Kyung Soo Kim1, Sung Wook Choi2, In Byung Kim2, Young Soo Lee1
1Department of Emergency Medicine, Ulsan University Medical College
2Department of Emergency Medicine, Yonsei University Medical College
  Published online: December 31, 1995.
ABSTRACT
Study objective: To evaluate the significance of Yamaguchi index as a predictor of outcome in patients with acute paraquat poisoning Design: Retrospective chart review Setting: Two University Hospital EDs
Method:
We reviewed the medical records of 47 patients with acute paraquat poisoning(18 survived and 29 died). The Eq1 was defined as : Eq1=[K+] x [HCO3-] / 0.088[Cre] mEq L-1 The patient's data were plotted as calculated Eql values (y-axis) against interval of time from ingestion to admission (T) (x-axis). The study patients were divided into three groups. Group A consisted of patients with Eq1 > 1500-399LogT; Group B consisted of patients with Eq1: 930-399LogT < Eq1≤ s 1500-399LogT; Group C consisted of patients with Eq1 s 930一399LogT.
Results:
There was a significant difference among three groups (A, B and C) as far as prognosis was concerned(P<0.01). In group A, all patients survived(survival rate 100%). In group B, six of 13 patients survived(survival rate 46%). In group C, none of patients survived (survival rate 0%).
Conclusion:
Yamaguchi index is a significant predictor of outcome in patients with acute paraquat poisoning
Key words: Yamaguchi index, Acute paraquat poisoning
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