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2 years ago
A patient’s electrocardiogram reveals a prolonged P-R interval and ST segment depression. The nurse should review laboratory results for which electrolyte imbalance?
1. Hypokalemia
2. Hyperkalemia
3. Hypocalcemia
4. Hypernatremia
Textbook 
Clinical Nursing Skills: Basic to Advanced Skills
Edition: 9th
Authors:
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2 years ago
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Rationale 1: Prolongation of the PR interval is not an ECG finding associated with hypokalemia.
Rationale 2: Cardiovascular manifestations of hyperkalemia include prolonged P-R interval; flat or absent P wave; slurring of QRS; tall peaked T wave; and ST segment depression.
Rationale 3: Hypocalcemia causes prolongation of the QT interval and a long ST segment.
Rationale 4: Cardiovascular manifestations of hypernatremia include hypertension and tachycardia.
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wrote...
2 years ago
Thank you for taking the time to actually provide an explanation, rather than just a letter!
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