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)

Answer and Explanation

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.

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Correct Answer is A

Explanation

Choice A Reason:

Occasional palpitations are a common symptom of supraventricular tachycardia (SVT) with a non-sustained ventricular response. Palpitations are sensations of a rapid, fluttering, or pounding heartbeat, which occur due to the irregular and fast heart rate characteristic of SVT. These palpitations can be intermittent and may vary in intensity, often causing discomfort and anxiety in patients.

Choice B Reason:

Weakness can be associated with SVT, but it is not as specific or common as palpitations. Weakness may occur due to the reduced cardiac output and decreased perfusion to the muscles during episodes of rapid heart rate. However, it is not the primary symptom that nurses would anticipate in patients with SVT.

Choice C Reason:

Shortness of breath is another symptom that can occur with SVT, especially during prolonged episodes. The rapid heart rate can lead to decreased efficiency in blood circulation, causing the patient to feel breathless. While shortness of breath is a significant symptom, palpitations are more directly associated with the diagnosis of SVT.

Correct Answer is ["31"]

Explanation

Let’s calculate the IV infusion rate step by step.

Step 1: Determine the total volume to be infused.

The total volume ordered is 1,000 mL.

Step 2: Determine the total time for the infusion.

The total time is 8 hours.

Step 3: Calculate the infusion rate in mL per hour.

Total volume (1,000 mL) ÷ Total time (8 hours) = 125 mL per hour.

Result: 125

Step 4: Determine the drop factor.

The IV tubing delivers 15 drops per milliliter.

Step 5: Calculate the infusion rate in drops per minute.

Infusion rate (125 mL per hour) × Drop factor (15 drops per mL) = 1,875 drops per hour.

Result: 1,875

Step 6: Convert the infusion rate to drops per minute.

Total drops per hour (1,875 drops) ÷ 60 minutes = 31.25 drops per minute.

Result: 31.25

Step 7: Round the result to the nearest whole number if necessary.

31.25 rounded to the nearest whole number is 31.

The nurse should run the IV infusion at a rate of 31 drops per minute.

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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?

Nursing Test Bank

Naxlex Comprehensive Predictor Exams

Which symptom will the nurse anticipate in a patient diagnosed with supraventricular tachycardia (SVT) with a non-sustained ventricular response?

Correct Answer is A

Explanation

The doctor orders dextrose 5% in water 1,000 mL to be infused over 8 hours. The IV tubing delivers 15 drops per milliliter. The nurse in charge should run the IV infusion at a rate of: NOTE: Enter ONLY THE NUMBER DO NOT enter the unit of measurement

Correct Answer is ["31"]

Explanation

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