Where is the Heart Normally Positioned on a Chest X-Ray? (Practice Question)

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In this video, I break down a practice question about where is the heart normally positioned on a chest x-Ray?

When inspecting a normal chest x-ray, where would you expect the heart to be positioned?
A. entirely to the left side of the patient’s midline/spine
B. primarily to the left side of the patient’s midline/spine
C. entirely to the right side of the patient’s midline/spine
D. primarily to the right side of the patient’s midline/spine

The correct answer is: primarily to the left side of the patient’s midline/spine

Within the mediastinum, the heart normally is visualized primarily to the left of the midline/spine (right side of X-ray). The image consists mostly of the lateral border of the left ventricle.

A smaller portion of the heart (the border of the right atrium) normally lies to the right of the midline/spine (left side of X-ray).

Also note that any lateral movement of the mediastinum away from the midline will also shift the heart position in the same direction.


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