A nurse in an emergency department is reviewing a client's ECG reading.

Which of the following findings should the nurse identify as an indication that the client has first-degree heart block?

Prolonged PR intervals.

Nondiscernible P waves.

More P waves than QRS complexes.

No correlation between P and QRS waves.

Answer and Explanation

The Correct Answer is A

First-degree heart block is a type of atrioventricular (AV) block that involves the consistent prolongation of the PR interval (defined as >0.20 seconds) due to delayed conduction via the atrioventricular node.
This is seen on an ECG as a PR interval greater than 200 ms in length.
Choice B: Nondiscernible P waves are not an answer because it is not mentioned as a characteristic of first-degree heart block in my sources.
Choice C: More P waves than QRS complexes is not an answer because it is not mentioned as a characteristic of first-degree heart block in my sources.
Choice D: No correlation between P and QRS waves is not an answer because it is not mentioned as a characteristic of first-degree heart block in my sources.

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Correct Answer is C

Explanation

Step 1: 100 mL ÷ 30 min

Step 2: (100 mL ÷ 30 min) × 60 min/hr

Step 3: 3.33 mL/min × 60 min/hr

Answer: 200 mL/hr

A. Administer IV fluids to the client. B. Insert a urinary catheter. C. Prepare the client for an intravenous pyelogram. D. Initiate beta-blocker therapy.

Correct Answer is A

Explanation

Administering IV fluids can help maintain blood flow to the kidneys and prevent acute kidney failure.
Choice B is incorrect because inserting a urinary catheter does not prevent acute kidney failure.
Choice C is incorrect because an intravenous pyelogram is a diagnostic test and does not prevent acute kidney failure.
Choice D is incorrect because beta-blocker therapy is not used to prevent acute kidney failure.

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A nurse in an emergency department is reviewing a client's ECG reading. Which of the following findings should the nurse identify as an indication that the client has first-degree heart block?

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Correct Answer is C

Explanation

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A nurse in an emergency department is reviewing a client's ECG reading.

Which of the following findings should the nurse identify as an indication that the client has first-degree heart block?