Shaking a baby could potentially result in all of the following injuries, EXCEPT:

Shaking a baby can lead to various serious injuries due to the delicate nature of an infant's brain and the way it is supported by the neck muscles. These injuries primarily arise from the violent motion, which can cause the brain to move against the skull, leading to damage.

Diffuse brain injury, acquired brain injury, and primary brain injury all correlate with the mechanisms of shaking. A diffuse brain injury refers to widespread damage across the brain, often seen in cases of violent shaking, where the brain sustains trauma throughout due to centrifugal forces. An acquired brain injury can result from various causes, including shaking, which may affect brain function and lead to long-term disabilities. Primary brain injury refers to the initial damage sustained by the brain at the time of the injury, which is a direct result of the external forces involved in shaking.

On the other hand, a focal brain injury is characterized by damage that is localized to a specific area of the brain rather than being diffuse or widespread. While shaking could theoretically lead to localized injuries if there is a particular impact point, the nature of the injury caused by shaking is not typically isolated to a specific region, which is why it is not considered a direct result of this act. Therefore, focal brain injury does not align with