A nurse is reviewing the medical record of a client who has pneumonia. Which of the following serum laboratory values should the nurse expect?

WBC count 15,000/mm3

Sodium 130 mg/dL

BUN 8 mg/dL

Hematocrit 35%

Answer and Explanation

The Correct Answer is A

A high WBC count (leukocytosis) indicates an inflammatory response to an infection, such as pneumonia. The nurse should expect to see this value in a client who has pneumonia and monitor the client for signs and symptoms of sepsis or systemic inflammatory response syndrome (SIRS). The other values are within normal or expected ranges for a client who has pneumonia.

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Correct Answer is C

Explanation

A serum sodium level of 120 mEq/L indicates hyponatremia, which is a condition where there is an excess of water relative to sodium in the body fluids. Hyponatremia can cause various neurological symptoms such as confusion, lethargy, seizures, coma, and death.

A. Vasovagal bradycardia without syncope B. Complete AV block with rates slower than 40/min C. Sinus tachycardia with rates faster than 80/min D. Asymptomatic second-degree AV block

Correct Answer is B

Explanation

A complete AV block (also called third-degree AV block) is a type of heart block in which there is no electrical communication between the atria and ventricles. This means that the atria and ventricles beat independently of each other, resulting in a slow and irregular pulse. A complete AV block can cause symptoms such as dizziness, fainting, chest pain, shortness of breath, and heart failure.

A permanent pacemaker is a device that sends electrical impulses to the heart to regulate its rhythm and prevent bradycardia (slow heart rate). A permanent pacemaker is indicated for clients with complete AV block and rates slower than 40/min or symptomatic bradycardia.

The other options are not indications for a permanent pacemaker. Vasovagal bradycardia is a temporary drop in heart rate and blood pressure caused by a stimulus that triggers the vagus nerve, such as pain, stress, or straining.

It usually resolves on its own or with simple measures, such as lying down or elevating the legs. Sinus tachycardia is a normal increase in heart rate in response to physical or emotional stress, such as exercise, fever, or anxiety. It usually does not require treatment unless it is caused by an underlying condition or causes symptoms.

Asymptomatic second-degree AV block is a type of heart block in which some of the electrical impulses from the atria are blocked from reaching the ventricles. It may not cause any symptoms or affect the overall heart rate. It may be benign or transient, or it may progress to a more serious type of heart block. It may require monitoring or medication, but not a permanent pacemaker unless it causes symptomatic bradycardia.

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A nurse is reviewing the medical record of a client who has pneumonia. Which of the following serum laboratory values should the nurse expect?

Nursing Test Bank

Naxlex Comprehensive Predictor Exams

A nurse is assessing a client who has a serum sodium level of 120 mEq/L. Which of the following findings should the nurse expect?

Correct Answer is C

Explanation

A nurse is reviewing a client's cardiac monitor for dysrhythmias. Which of the following findings should the nurse identify as an indication for the placement of a permanent pacemaker?

Correct Answer is B

Explanation

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