Final answer:
When determining degrees for axis deviation, you look at the limb leads in a 12-lead ECG, specifically leads I, II, III, aVR, aVL, and aVF. By analyzing the QRS complex in these leads, the degrees of axis deviation can be determined.
Step-by-step explanation:
When determining degrees for axis deviation, the leads you are looking at are the limb leads in a 12-lead ECG. Specifically, you will focus on leads I, II, III, aVR, aVL, and aVF. These leads provide different views of the electrical activity of the heart from different angles.
Axis deviation refers to the direction in which the electrical signals are traveling through the heart. By analyzing the QRS complex in leads I, II, and III, the degrees of axis deviation can be determined. For example, if the QRS complex in lead I is mostly positive and lead III is mostly negative, it suggests a left axis deviation.
It is important to note that determining degrees of axis deviation requires a trained healthcare professional who is skilled in interpreting ECG patterns.