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.
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.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is D
Explanation
The nurse should palpate the dorsalis pedis pulse.
This is to assess for peripheral neurovascular dysfunction, which is a potential complication of a tibial fracture.
Choice A, wrapping sterile gauze on the sharp point of the pins, is not an answer because it is not mentioned in the search results as an intervention for a client with an external fixator for a tibial fracture.
Choice B, adjusting the clamps on the fixator frame, is not an answer because it is not mentioned in the search results as an intervention for a client with an external fixator for a tibial fracture.
Choice C, maintaining the affected extremity in a dependent position, is not an answer because it is not mentioned in the search results as an intervention for a client with an external fixator for a tibial fracture.
Correct Answer is A
Explanation
This statement indicates an understanding of the teaching because cool, clammy skin is a common symptom of hypoglycemia.
Choice B is incorrect because acetone breath is a symptom of hyperglycemia (high blood sugar), not hypoglycemia (low blood sugar).
Choice C is incorrect because Kussmaul respirations (deep and labored breathing) are a symptom of hyperglycemia, not hypoglycemia.
Choice D is incorrect because increased urine output is a symptom of hyperglycemia, not hypoglycemia.
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