Question

what does transtentorial herniation usually produce? respiratory arrest nystagmus one dilated pupil blindness in one eye severe lateral headache

Explanation:

Transtentorial herniation can compress the oculomotor nerve, leading to ipsilateral pupillary dilation. Respiratory arrest is more associated with brain - stem compression in later stages. Nystagmus is not a typical immediate sign. Blindness in one eye and severe lateral headache are not the most characteristic manifestations compared to pupillary changes.

Answer:

one dilated pupil