M.I. Criteria for Likelyhood in Chest Pain with LBBB

 

		ST Elevation ≥1 mm concordant with QRS axis (5 points)
		ST depression ≥1 mm in V1, V2 or V3 (3 points)
		ST Elevation ≥5 mm discordant with QRS axis (2 points)

 

Total Criteria Point Count:
 

 

M.I. Criteria

 

10 Points:	100 % MI
8 Points:	92 % MI
7 Points:	93 % MI
5 Points:	88 % MI
3 Points:	66 % MI
2 Points:	50 % MI
0 Points:	16 % MI

 

 

References

1. Bates ER. ACP Journal Club. Review: Sgarbossa scores > or = 3 have low sensitivity and high specificity for predicting MI in left bundle branch block. Ann Intern Med. 2009 Feb 17;150(4):JC2-15. PubMed ID: 19238613
2. Sgarbossa EB, Pinski SL, Barbagelata A, et al. Electrocardiographic diagnosis of evolving acute myocardial infarction in the presence of left bundle-branch block. GUSTO-1 (Global Utilization of Streptokinase and Tissue Plasminogen Activator for Occluded Coronary Arteries) Investigators. N Engl J Med. 1996 Feb 22;334(8):481-7. PubMed ID: 8559200
3. Tabas JA, Rodriguez RM, Seligman HK, Goldschlager NF. Electrocardiographic criteria for detecting acute myocardial infarction in patients with left bundle branch block: a meta-analysis. Ann Emerg Med. 2008 Oct;52(4):329-336.e1. doi: 10.1016/j.annemergmed.2007.12.006. Epub 2008 Mar 17. PubMed ID: 18342992