Exhibits

A nurse is reviewing the client’s condition. Based on the exhibits provided, what is the most likely diagnosis for this client?

Choice A rationale:

Incorrect. Open-angle glaucoma is not characterized by an abnormally small angle.

The angle in open-angle glaucoma is open, but the drainage system is not working properly. Therefore, restoring a smaller angle would not be an effective treatment goal.

Choice B rationale:

Incorrect. Eye drops used to treat open-angle glaucoma are not typically used for pain control.

While some individuals may experience mild discomfort associated with elevated eye pressure, pain is not a common symptom of open-angle glaucoma.

Additionally, eye drops used to treat glaucoma do not have anti-inflammatory properties to address swelling.

Choice C rationale:

Incorrect. While reducing excess eye pressure is an important initial goal of treatment, long-term management of open-angle glaucoma requires ongoing maintenance of normal eye pressure.

Simply reducing pressure temporarily is not sufficient to prevent vision loss.

Choice D rationale:

Correct. The primary goal of treatment for open-angle glaucoma is to maintain normal eye pressure over the long term. This is because elevated eye pressure can damage the optic nerve, leading to vision loss.

Eye drops are often used to lower eye pressure, and they typically need to be used for life to prevent vision loss.

Choice A rationale:

Lactulose is a non-absorbable disaccharide that is metabolized by bacteria in the colon to produce lactic acid and acetic acid. These acids acidify the colon, which traps ammonia (NH3) in the colon and converts it to ammonium (NH4+). Ammonium is not absorbed by the colon and is excreted in the stool. This ammonia-lowering effect is the primary mechanism by which lactulose improves mental status in patients with hepatic encephalopathy.

Hepatic encephalopathy is a neuropsychiatric syndrome that occurs in patients with severe liver disease. It is caused by the buildup of ammonia in the blood, which can cross the blood-brain barrier and cause cerebral edema and impaired brain function.

The clinical manifestations of hepatic encephalopathy range from mild confusion and personality changes to coma. Improved mental status is a key therapeutic goal in the treatment of hepatic encephalopathy.

Studies have shown that lactulose can improve mental status in patients with hepatic encephalopathy. A meta-analysis of 11 randomized controlled trials found that lactulose was associated with a significant improvement in mental status compared to placebo.

The improvement in mental status is typically seen within 24 to 48 hours of starting lactulose therapy.

Choice B rationale:

Increased urine output is not a direct therapeutic effect of lactulose. Lactulose can cause diarrhea, which can lead to increased urine output due to fluid loss. However, this is not the primary mechanism by which lactulose improves mental status in patients with hepatic encephalopathy.

Choice C rationale:

Reduction in the number of liquid stools is a common side effect of lactulose. However, it is not a therapeutic goal in the treatment of hepatic encephalopathy. The goal of lactulose therapy is to improve mental status by lowering ammonia levels in the blood.

Choice D rationale:

Ability to ambulate independently is not a direct therapeutic effect of lactulose. Lactulose can improve mental status, which may indirectly lead to improved ambulation in some patients. However, this is not the primary mechanism by which lactulose works.