The nurse is discussing the blood flow pattern of the heart. The nurse should recognize which of the following as the accurate blood flow pattern of the heart?

A. The eyes converge to focus on the light.

This statement refers to the convergence reflex, where both eyes move medially (towards each other) to maintain single binocular vision when focusing on a near object. It is not related to the pupillary light reflex, which involves changes in pupil size in response to light.

B. The eye focuses the image in the center of the pupil.

This choice does not accurately describe the pupillary light reflex. The pupillary light reflex involves constriction of the pupil in response to light, not focusing an image in the center of the pupil.

C. Dilation of both pupils occurs in response to bright light.

This statement is incorrect. In response to bright light, the pupils should constrict, not dilate. Dilation of pupils in bright light could indicate an abnormal response, such as in cases of certain neurological conditions or drug use.

D. Constriction of both pupils occurs in response to bright light.

This choice is correct. In the pupillary light reflex, both pupils constrict when exposed to bright light. This response is a protective mechanism to prevent excessive light from entering the eyes, ensuring optimal visual acuity.

A. Maxillary sinusitis:

Explanation: The client's symptoms of facial pain, fever, malaise, swollen turbinates, purulent nasal discharge, and dull, throbbing pain in the cheeks and teeth on the right side, especially when palpated, are indicative of maxillary sinusitis. Maxillary sinusitis refers to the inflammation of the maxillary sinuses, which are located in the cheek area. The symptoms described align with a bacterial infection in this sinus.

B. Nasal polyps:

Explanation: Nasal polyps are soft, noncancerous growths on the lining of the nasal passages or sinuses. While they can cause nasal congestion and a runny nose, they do not typically present with the specific symptoms mentioned in the scenario, such as facial pain, fever, and purulent discharge.

C. Frontal sinusitis:

Explanation: Frontal sinusitis involves inflammation of the frontal sinuses located in the forehead area. Symptoms may include forehead pain, headache, and nasal discharge. However, the described symptoms in the scenario (dull, throbbing pain in the cheeks and teeth on the right side) are more characteristic of maxillary sinusitis.

D. Posterior epistaxis:

Explanation: Posterior epistaxis refers to a nosebleed that originates from the back of the nose, often due to bleeding from the sphenopalatine artery. While nosebleeds can cause blood drainage into the throat and result in a metallic taste, the other symptoms described in the scenario, such as facial pain, fever, and purulent discharge, are not indicative of posterior epistaxis.