6: EKGs and MIs Flashcards
What EKG abnormality equates with a myocardial infarction?
ST Segment Elevation
What EKG change indicates old or extensive myocardial tissue damage?
Q Wave
Which ST Segment change is most concerning?
Coved (Convex Down like a “frowny” face) is more concerning than concave up (like a “smiley” face) with J point notching.
When might a med cause an ST change instead of an MI?
Chronic Digoxin use.
What do you look for on an EKG in regards to an MI?
Q Wave changes
Changes in conduction
ST Segment changes
T Wave changes
What is the order of change with the Q Wave, T Wave, and ST Segment in an MI?
ST Segment Elevation
T Wave Inversion
Deep, Wide Q Wave
The mirror tests helps with which kind of MI?
Acute Inferior MI
Which kind of MI?
ST segment elevation in leads 2, 3, and aVF.
Acute Inferior MI
Which kind of MI?
Presence of initial Q waves that are deep and broad in the inferior leads 2, 3, and aVF.
Chronic Inferior Wall MI
Which kind of MI?
Characterized by a tall R wave in V1 (R/S>1.0). There is also a rightward axis.
Chronic Posterior Wall MI
Which kind of MI?
ST elevation in leads I and aVL.
Acute Lateral MI
Which kind of MI?
ST elevation is present in V3 and V4.
Acute Anteroapical MI
Which kind of MI?
ST elevation is prominent in leads I, aVL, V5, and V6.
Acute Anterolateral MI
Which kind of MI?
ST segment elevation in V1 and V2. There is also reciprocal ST segment depression in V5 and V6.
Acute Anteroseptal MI
Which kind of MI?
ST elevation in some or all of the precordial (V1-V6) leads.
Acute Anterior Wall MI
