During the admission assessment, a client admitted with chest pain reports having no breathing problems and no trouble sleeping at night. To obtain further data regarding possible orthopnea, which action should the nurse take?

A) Compare the shape of each of the pupils bilaterally with normal room light:
Assessing the shape of the pupils with normal room light is not specifically related to assessing pupillary reaction to accommodation. This action may be more relevant for assessing pupillary symmetry and shape, but it does not directly evaluate accommodation.

B) Determine if dilation of the pupils occurs when the room is darkened:
This action assesses the pupillary response to changes in light (pupillary light reflex), not specifically accommodation. While it is an important assessment, it does not target accommodation specifically.

C) Note the speed of pupil constriction when a penlight is shined into the eye:
This action assesses the pupillary light reflex, which involves the constriction of the pupils in response to light. While it is related to pupillary function, it does not specifically evaluate accommodation.

D) Observe pupil size when focusing on a near object and then a far object:
This action directly assesses the pupillary reaction to accommodation. When focusing on a near object, the pupils should constrict (miosis), and when focusing on a far object, the pupils should dilate (mydriasis). This response indicates that the pupils are adapting to changes in focal distance, demonstrating accommodation.

A) Observe for jugular vein distention while the client is flat in bed: While jugular vein distention can indicate fluid overload or heart failure, it is not a direct assessment of orthopnea, which is the difficulty breathing while lying flat.

B) Measure the blood pressure when the client is lying and standing: This action assesses for orthostatic hypotension, which is a drop in blood pressure upon standing. While orthostatic hypotension can contribute to symptoms of dizziness or fainting upon assuming an upright position, it does not directly assess orthopnea.

C) Auscultate breath sounds while the client is supine: Auscultating breath sounds while the client is supine can provide information about lung function and the presence of abnormal breath sounds, but it does not specifically address orthopnea.

D) Ask the client how many pillows are used to sleep on at night: Orthopnea is a condition in which individuals have difficulty breathing while lying flat and may need to sleep with multiple pillows or in a more upright position to alleviate symptoms. Therefore, asking the client about the number of pillows used for sleep can provide valuable information about the presence and severity of orthopnea.