Which client electrocardiography (ECG) change from baseline will alert the nurse to possible development of hypercalcemia?
Shortened QT interval.
Inverted T waves.
Prominent U wave.
Absent P wave.
The Correct Answer is A
Choice A reason: Hypercalcemia shortens the QT interval on ECG due to accelerated cardiac repolarization. This aligns with electrolyte-related cardiac monitoring, making it the correct change the nurse would recognize as indicating possible hypercalcemia in the client’s electrocardiography assessment.
Choice B reason: Inverted T waves suggest ischemia or hypokalemia, not hypercalcemia, which shortens the QT interval. This is incorrect, as it doesn’t align with the nurse’s expected ECG change for hypercalcemia compared to the characteristic shortened QT interval.
Choice C reason: Prominent U waves are associated with hypokalemia, not hypercalcemia, which affects the QT interval. Shortened QT is correct, making this incorrect, as it’s unrelated to the nurse’s monitoring for hypercalcemia’s ECG changes in the client.
Choice D reason: Absent P waves indicate atrial fibrillation, not hypercalcemia, which shortens the QT interval. This is incorrect, as it doesn’t reflect the nurse’s anticipated ECG change for hypercalcemia, unlike the characteristic shortened QT interval in the client’s monitoring.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
Choice A reason: Troubleshooting the ventilator delays oxygenation in a patient with acute lung failure. Manual ventilation ensures immediate breathing, making this incorrect, as it’s less urgent than the nurse’s priority to maintain the patient’s airway and oxygenation during an alarm.
Choice B reason: Manually ventilating the patient after disconnecting from the inoperative ventilator ensures oxygenation in acute lung failure. This aligns with emergency respiratory protocols, making it the correct first action the nurse should take to address the ventilator alarm.
Choice C reason: Calling the respiratory therapist is important but delays immediate oxygenation needed during a ventilator failure. Manual ventilation is the priority, making this incorrect, as it postpones the nurse’s critical action to ensure the patient’s breathing is supported.
Choice D reason: Silencing alarms without addressing the ventilator failure risks hypoxia in a lung failure patient. Manual ventilation is urgent, making this incorrect, as it’s unsafe compared to the nurse’s priority of ensuring oxygenation during the inoperative alarm.
Correct Answer is C
Explanation
Choice A reason: Nausea and vomiting may occur with nitroglycerin, but depression, fatigue, and impotence are unrelated. Headache and hypotension are primary effects, making this incorrect, as it includes irrelevant symptoms compared to the nurse’s teaching on nitroglycerin’s expected side effects.
Choice B reason: Sedation, constipation, and respiratory depression are opioid effects, not nitroglycerin, which causes vasodilation. Dizziness and flushing are correct, making this incorrect, as it misattributes opioid side effects to nitroglycerin in the nurse’s education for angina management.
Choice C reason: Nitroglycerin causes headache, hypotension, dizziness, and flushing due to vasodilation, common side effects. This aligns with pharmacological education for angina, making it the correct set of symptoms the nurse would teach the client to expect after taking sublingual nitroglycerin.
Choice D reason: Pedal edema is not a nitroglycerin side effect, though flushing, dizziness, and headache are. Hypotension is more precise than edema, making this incorrect, as it includes an unrelated symptom compared to the accurate side effects in nitroglycerin teaching.
Choice E reason: Decreased cardiac output and peripheral edema are not nitroglycerin effects; it improves coronary flow. Flushing is correct, but hypotension is key, making this incorrect, as it misrepresents nitroglycerin’s pharmacological effects in the nurse’s teaching for angina relief.
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