The nurse is caring for a client diagnosed with chronic hepatitis who is receiving the medication lactulose. Which of these laboratory results would indicate the medication is achieving the desired therapeutic effect?
Increased serum albumin
Decreased serum bilirubin
Decreased serum ammonia
Decreased serum alanine aminotransferase (ALT)
The Correct Answer is C
Choice A Reason: Increased Serum Albumin
Increased serum albumin is not a direct indicator of the therapeutic effect of lactulose in patients with chronic hepatitis. Albumin is a protein made by the liver, and its levels can be affected by liver function. However, lactulose primarily works by reducing ammonia levels in the blood, not by increasing albumin levels. Normal serum albumin levels range from 3.5 to 5.5 grams per deciliter (g/dL). While improved liver function might eventually lead to increased albumin levels, this is not the primary therapeutic effect of lactulose.
Choice B Reason: Decreased Serum Bilirubin
Decreased serum bilirubin is also not a direct indicator of lactulose’s therapeutic effect. Bilirubin is a byproduct of the normal breakdown of red blood cells and is processed by the liver. Elevated bilirubin levels can indicate liver dysfunction, but lactulose’s main role is to reduce ammonia levels, not bilirubin. Normal serum bilirubin levels are typically between 0.1 to 1.2 milligrams per deciliter (mg/dL). While improved liver function might reduce bilirubin levels, this is not the primary goal of lactulose therapy.
Choice C Reason: Decreased Serum Ammonia
Decreased serum ammonia is the correct indicator of the therapeutic effect of lactulose in patients with chronic hepatitis. Lactulose is used to treat hepatic encephalopathy, a condition caused by high levels of ammonia in the blood due to liver dysfunction. Lactulose works by converting ammonia into ammonium, which is then excreted from the body. Normal serum ammonia levels are less than 50 micromoles per liter (µmol/L) in adults56. A decrease in serum ammonia levels indicates that lactulose is effectively reducing the toxic levels of ammonia in the blood, thereby achieving its desired therapeutic effect.
Choice D Reason: Decreased Serum Alanine Aminotransferase (ALT)
Decreased serum alanine aminotransferase (ALT) is not a direct indicator of lactulose’s therapeutic effect. ALT is an enzyme found in the liver that helps convert proteins into energy for liver cells. Elevated ALT levels can indicate liver damage. Normal ALT levels range from 7 to 56 units per liter (U/L). While improved liver function might reduce ALT levels, lactulose’s primary role is to reduce ammonia levels, not directly affect ALT.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is ["C","D","E"]
Explanation
Choice A reason: Stretch marks, also known as striae, are not specific to ascites. They can occur due to rapid weight gain or loss, pregnancy, or other conditions that cause the skin to stretch. While they may be present in individuals with ascites due to rapid abdominal expansion, they are not a primary clinical manifestation of ascites.
Choice B reason: Foul-smelling breath, or halitosis, is not a typical symptom of ascites. It can be associated with various conditions, including poor oral hygiene, gastrointestinal disorders, or liver disease, but it is not a direct indicator of ascites.
Choice C reason: Increased abdominal girth is a primary clinical manifestation of ascites. Ascites is characterized by the accumulation of fluid in the peritoneal cavity, leading to noticeable abdominal distension. This symptom is often accompanied by a feeling of fullness or bloating.
Choice D reason: Visible distended veins, particularly around the abdomen, can be a sign of ascites. This occurs due to increased pressure in the abdominal veins as a result of fluid accumulation. The veins become more prominent and visible under the skin.
Choice E reason: Rapid weight gain is another key indicator of ascites. The accumulation of fluid in the abdomen leads to a significant increase in body weight over a short period. This rapid weight gain is often one of the first signs that prompts further investigation for ascites.
Correct Answer is ["B"]
Explanation
Choice A Reason:
I sleep at least 8 hours each night.
This statement is not concerning because getting adequate sleep is generally a sign of good health. It does not directly relate to symptoms of high blood glucose levels. Therefore, this choice is not relevant to the nurse’s concerns regarding the client’s elevated blood glucose level.
Choice B Reason:
I cannot seem to quench my thirst.
This statement is concerning because excessive thirst, known as polydipsia, is a common symptom of high blood glucose levels or hyperglycemia. When blood glucose levels are elevated, the body tries to eliminate the excess glucose through urine, leading to dehydration and increased thirst. This symptom indicates that the client’s blood glucose levels may be poorly controlled, which requires medical attention.
Choice C Reason:
I have to void nearly every hour.
Frequent urination, or polyuria, is another symptom of high blood glucose levels. When there is too much glucose in the blood, the kidneys work harder to filter and absorb it. When they can’t keep up, the excess glucose is excreted into the urine, pulling fluids from the tissues and causing frequent urination. This symptom is a clear indicator of hyperglycemia and needs to be addressed by the nurse.
Choice D Reason:
At times my vision is blurry.
Blurred vision can be a symptom of high blood glucose levels. Elevated glucose levels can cause the lens of the eye to swell, leading to changes in vision. This symptom is concerning because it suggests that the client’s blood glucose levels are affecting their vision, which can be a sign of poorly managed diabetes or other complications.
Choice E Reason:
I have lost 10 pounds without even trying.
Unintentional weight loss is a concerning symptom of high blood glucose levels. When the body cannot use glucose for energy due to insulin resistance or lack of insulin, it starts to break down muscle and fat for energy, leading to weight loss. This symptom indicates that the client’s diabetes may be uncontrolled, and immediate medical intervention is necessary.
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