After teaching a nursing student about mitral valve stenosis and mitral valve regurgitation, the nurse identifies effective learning when the student identifies which common feature of both disorders?

Hemoptysis

High-pitched holosystolic murmur

Hepatomegaly

Answer and Explanation

The Correct Answer is A

Choice A Reason:

Hemoptysis, or coughing up blood, is a common feature of both mitral valve stenosis and mitral valve regurgitation. In mitral valve stenosis, the narrowing of the valve leads to increased pressure in the pulmonary veins, which can cause pulmonary congestion and hemoptysis. Similarly, in mitral valve regurgitation, the backflow of blood into the left atrium increases pulmonary pressure, potentially leading to pulmonary edema and hemoptysis. Therefore, hemoptysis is a shared symptom of both conditions.

Choice B Reason:

A high-pitched holosystolic murmur is more commonly associated with mitral valve regurgitation rather than mitral valve stenosis. In mitral valve regurgitation, the murmur is caused by the backflow of blood from the left ventricle into the left atrium during systole3. Mitral valve stenosis, on the other hand, typically presents with a diastolic murmur due to the turbulent flow of blood through the narrowed valve during diastole. Therefore, a high-pitched holosystolic murmur is not a common feature of both disorders.

Choice C Reason:

Hepatomegaly, or an enlarged liver, can occur in advanced cases of both mitral valve stenosis and mitral valve regurgitation due to right-sided heart failure. However, it is not a primary or common feature of these conditions. Hepatomegaly is more often associated with conditions that directly affect the right side of the heart or cause systemic congestion. Therefore, hepatomegaly is not a common feature of both mitral valve stenosis and mitral valve regurgitation.

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Correct Answer is ["31"]

Explanation

Step 1: Calculate the total infusion time in minutes.

8 hours × 60 minutes/hour = 480 minutes

Result at each step = 480 minutes

Step 2: Calculate the total number of drops to be infused.

1,000 mL × 15 drops/mL = 15,000 drops

Result at each step = 15,000 drops

Step 3: Calculate the infusion rate in drops per minute.

15,000 drops ÷ 480 minutes = 31.25 drops/minute

Result at each step = 31.25 drops/minute

Step 4: Round to the nearest whole number if necessary.

31.25 drops/minute rounds to 31 drops/minute

Result at each step = 31 drops/minute

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

A. Increased serum albumin B. Decreased serum bilirubin C. Decreased serum ammonia D. Decreased serum alanine aminotransferase (ALT)

Correct Answer is C

Explanation

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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After teaching a nursing student about mitral valve stenosis and mitral valve regurgitation, the nurse identifies effective learning when the student identifies which common feature of both disorders?

Nursing Test Bank

Naxlex Comprehensive Predictor Exams

Exhibits You retrieved regular insulin 100 units in 1 ml. How many ml should you administer? Note Enter ONLY the number DO NOT enter the unit(s) of measurement

Correct Answer is ["31"]

Explanation

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?

Correct Answer is C

Explanation

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