Acute coronary syndrome

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Last updated 4:20 PM on 9/23/26
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14 Terms

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Anterior STEMI artery

LAD with reciprocal changes in 2,3,AvF

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Septal STEMI artery

LAD

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Lateral STEMI artery

Left Circumflex

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Inferior Stemi Artery

Right coronary artery

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Posterior Stemi artery

Right coronary/left circumflex

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Right ventricular stemi artery

Right coronary

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Posterior Stemi description

ST segment depression V1-V4

Broad R waves, upright T waves

Dominant R waves (R/S ratio >1) V1V2

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Procedure for Posterior STEMI

Flip V4-V6 for V7-V9 (put v4-v6 on the back)

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Right ventricular stemi description

ST elevation V1

ST elevation III>II

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Right ventricular STEMI procedure

Flip v1-v6 from left to right chest wall

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3 Phases of STEMI

1.) Early acute

2.) Evolved stemi

3.) Chronic Phase

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Early Acute Stemi

*minutes to hours

Peaked T waves

Fireman’s hat

(reciprocal changes aka ST depressions in opposite leads)

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Evolved Stemi

ST elevation regression

T wave inversion in leads with ST wave elevation

Pathologic Q wave develops (>0.03 secs or depth greater than 30% R wave amplitude)

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Chronic Phase Stemi

ST elevation resolves in 2 weeks

Q waves never resolve after anterior MI, will disappear with inferior wall MI