Clinical Medical Assistant Exam Practice Question

Correct Answer: C

Rationale: Positioning the V1 electrode correctly is crucial for accurate ECG readings. The V1 electrode should be placed in the fourth intercostal space at the right sternal border, allowing optimal visualization of the heart's electrical activity, particularly the right ventricle.

Option A is incorrect as it places the electrode in the fifth intercostal space, which is too low and may miss critical information. Option B, while at the left sternal border, is also incorrect as it does not reflect the proper right-sided placement for V1. Option D misplaces the electrode at the right sternal border but in the fifth intercostal space, which is again too low for accurate assessment.