Difference between revisions of "Sgarbossa's criteria"

Revision as of 22:44, 14 October 2013

Assesses likelihood that pt w/ chest pain and baseline LBBB has myocardial damage (+CK-MB)
- Criteria also applies to LBBB due to paced rhythm
Low Sn, High Sp
- Still consider PCI/t-PA for pts w/ LBBB and "good story" despite not meeting the criteria

ST elevation ≥1 mm in a lead with upward (concordant) QRS complex - 5 points
ST depression ≥1 mm in lead V1, V2, or V3 - 3 points
ST elevation ≥5 mm in a lead with downward (discordant) QRS complex - 2 points
- Smith's modification of 3rd rule of Sgarbossa criteria to be ST depression OR elevation discordant w/ the QRS complex and w/ a magnitude of at least 25% of the QRS increases Sn from 52% to 91% at the expense of reducing Sp from 98% to 90%

Authors:

@@ Line 6: / Line 6: @@
 ==Criteria==
+*≥3 points = 98% probability of [[STEMI]]
 *ST elevation ≥1 mm in a lead with upward (concordant) QRS complex - 5 points
 *ST depression ≥1 mm in lead V1, V2, or V3 - 3 points
 *ST elevation ≥5 mm in a lead with downward (discordant) QRS complex - 2 points
-*(See [[#Example | below]] for example of all 3 criteria)
+**Smith's modification of 3rd rule of Sgarbossa criteria to be ST depression OR elevation discordant w/ the QRS complex and w/ a magnitude of at least 25% of the QRS increases Sn from 52% to 91% at the expense of reducing Sp from 98% to 90%
-*Smith's modification of the third rule of the Sgarbossa criteria to ST depression or elevation discordant with the QRS complex and with a magnitude of at least 25% of that of the QRS complex increases sensitivity from 52% to 91% at the expense of reducing specificity from 98% to 90%.
-==Points==
-*≥3 points = 98% probability of [[STEMI]]
-==Example==
+==Example of all 3 criteria==
 [[File:Sgarbossa.jpg]]