12-lead EKG axis, infarct patterns, and interpretation skills for EKG technicians.
38 cards · basic cards · AI-written, checked twice. Edit anything.
- What is the normal QRS axis range in degrees?
- -30 to +90 degrees
- Which leads are the inferior leads?
- II, III, aVF
- Which leads are the anterior leads?
- V1, V2, V3, V4
- Which leads are the lateral leads?
- I, aVL, V5, V6
- ST elevation in II, III, and aVF indicates?
- Inferior wall myocardial infarction
- ST elevation in V1 through V4 indicates?
- Anterior wall myocardial infarction
- ST elevation in I and aVL indicates?
- Lateral wall myocardial infarction
- What is left axis deviation?
- QRS axis more negative than -30 degrees
- What is right axis deviation?
- QRS axis more positive than +90 degrees
- What is the normal PR interval?
- 0.12 to 0.20 seconds (3 to 5 small squares)
- What is the normal QRS duration?
- Less than 0.12 seconds (3 small squares)
- What is the normal P wave duration?
- Less than 0.12 seconds (3 small squares)
- What does T wave inversion indicate?
- Ischemia or prior myocardial infarction
- What does peaked T wave indicate?
- Hyperkalemia or acute myocardial infarction
- What does ST depression indicate?
- Ischemia, strain, or posterior wall infarction