Which electrolyte imbalance is most likely indicated by a peaked T wave on an ECG?
Hyperkalemia
Hypocalcemia
Hyponatremia
Hypomagnesemia
The Correct Answer is A
Rationale:
A tall, peaked T wave on an ECG is a classic sign of elevated potassium levels, which can progress to life-threatening arrhythmias if untreated.
B. Hypocalcemia is incorrect; it is associated with prolonged QT intervals and tetany, not peaked T waves.
C. Hyponatremia is incorrect; it typically causes neurologic symptoms (confusion, seizures) rather than characteristic ECG changes.
D. Hypomagnesemia is incorrect; it can cause prolonged QT and torsades de pointes, but not peaked T waves.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
Rationale:
A. Delaying discussion until after signing the consent form does not address the client’s immediate anxiety or provide needed education.
B. Providing information about sedation reassures the client that discomfort during the colonoscopy will be minimized and helps reduce anxiety. It is accurate, therapeutic, and informative.
C. Acknowledging the recommendation without addressing the anxiety does not provide reassurance or information about pain management.
D. While humorous, this comment does not address the client’s concern about pain and is not considered a therapeutic response.
Correct Answer is ["A","B","C"]
Explanation
Correct Answers:
The nurse should educate the client that diagnostic imaging techniques used for assessing pancreatic ducts include Ultrasound, MRCP, and CT scan.
Rationale:
- Ultrasound is commonly used as an initial noninvasive imaging tool for detecting pancreatic abnormalities.
- MRCP (Magnetic Resonance Cholangiopancreatography) is a specialized MRI technique that provides detailed images of the pancreatic and biliary ducts.
- CT scan provides cross-sectional imaging of the pancreas and can identify masses or ductal obstruction.
- Biopsy is diagnostic but not considered an imaging technique.
- HIDA scan assesses gallbladder function, not pancreatic ducts.
- X-ray is not effective for direct pancreatic duct imaging.
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