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?
Vasovagal bradycardia without syncope
Complete AV block with rates slower than 40/min
Sinus tachycardia with rates faster than 80/min
Asymptomatic second-degree AV block
The Correct Answer is B
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.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
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Correct Answer is D
Explanation
A low potassium level (hypokalemia) can increase the risk for digoxin toxicity because it enhances the binding of digoxin to cardiac cells and increases its effects on cardiac contractility and electrical conduction. The nurse should monitor the client's potassium level and administer potassium supplements as prescribed if needed. The other electrolytes are not directly related to digoxin toxicity.
Correct Answer is C
Explanation
An ileostomy is a surgical opening in the abdomen that connects the end of the small intestine (ileum) to a pouch or bag on the outside of the body. The ileostomy bypasses the large intestine (colon) and rectum, which normally absorb water and form solid stools. Therefore, the client should expect their stools to be loose and watery. The client should empty their bag several times a day, not when it is full, to prevent leakage and skin irritation. The client should avoid laxatives, which can cause dehydration and electrolyte imbalance. The client should also avoid high-fiber foods, which can cause blockage or irritation of the ileostomy.
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