A 12-Lead ECG That Reveals Slight ST Segment Elevation; Q

question 61

Multiple Choice

A 12-lead ECG that reveals slight ST segment elevation; Q waves in leads II, III, and aVF; and ST elevation in V1 and V2 most indicate which of the following?

• A) The patient is experiencing myocardial ischemia in her inferior wall that is extending into the septum.
• B) The patient is experiencing myocardial injury in her lateral wall.
• C) The patient has had a myocardial infarction in her inferior wall and is experiencing ischemia extending into the right ventricle.
• D) The patient is experiencing ischemia and injury in her left ventricle and septum.

---

Definitions:

Mean

The average of a set of numbers, calculated by dividing the sum of these numbers by the count of the numbers.

Variance

A measure of the dispersion of a set of data points around their mean; it is calculated as the average of the squared differences from the Mean.

Chi-squared Distribution

The Chi-squared distribution is a statistical distribution widely used in inferential statistics, especially in chi-squared tests, described by degrees of freedom.

Degrees of Freedom

The number of independent pieces of information available to estimate another piece of information or parameter.