A child has a 2-day history of vomiting, hypoactive bowel sounds, and an irregular pulse. Electrolyte values are sodium, 130 mEq/L; potassium, 3.3 mEq/L; calcium, 9.5 mg/dL; and HCO3, 30 mEq/L. Which of the following imbalances is the child most likely to have? (Select all that apply)
Hyponatremia.
Hypocalcemia.
Hyperkalemia.
Hypokalemia.
Metabolic acidosis.
Metabolic alkalosis.
Correct Answer : A,F
Choice A reason: Sodium of 130 mEq/L indicates hyponatremia, likely from vomiting-induced sodium loss. This aligns with the child’s electrolyte profile and symptoms, making it a correct imbalance the nurse would identify as most likely based on the lab values and clinical presentation.
Choice B reason: Calcium of 9.5 mg/dL is normal, not indicating hypocalcemia. Hyponatremia and metabolic alkalosis match the labs (sodium 130, HCO3 30), making this incorrect, as it does not reflect the child’s electrolyte imbalances from vomiting and irregular pulse.
Choice C reason: Potassium of 3.3 mEq/L is low, not high, ruling out hyperkalemia. Hyponatremia and metabolic alkalosis fit the labs and vomiting history, making this incorrect, as it contradicts the child’s potassium level in the nurse’s assessment of imbalances.
Choice D reason: Potassium of 3.3 mEq/L suggests mild hypokalemia, but hyponatremia (sodium 130) is more prominent with vomiting. Metabolic alkalosis is also evident, making this partially correct but incorrect as the primary imbalance compared to hyponatremia in the child’s profile.
Choice E reason: HCO3 of 30 mEq/L indicates alkalosis, not acidosis, due to vomiting-induced hydrogen ion loss. Hyponatremia and metabolic alkalosis are correct, making this incorrect, as it contradicts the child’s alkalotic state in the nurse’s evaluation of lab values.
Choice F reason: HCO3 of 30 mEq/L indicates metabolic alkalosis, common with vomiting due to loss of acidic gastric contents. This, with hyponatremia, aligns with the child’s labs and symptoms, making it a correct imbalance the nurse would identify in the assessment.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is D
Explanation
Choice A reason: Hypertension and tachycardia may occur in dialysis but aren’t specific to disequilibrium syndrome, which causes neurological symptoms. Headache and twitching are key, making this incorrect, as it’s less precise than the nurse’s expected manifestations of disequilibrium syndrome.
Choice B reason: Hypotension may occur in dialysis, but bradycardia and hypothermia aren’t typical of disequilibrium syndrome, which affects the brain. Deteriorating consciousness is correct, making this incorrect, as it doesn’t align with the nurse’s assessment for this complication.
Choice C reason: Restlessness and weakness are vague and less specific than headache and twitching, which indicate cerebral edema in disequilibrium syndrome. This is incorrect, as it’s not the primary manifestation the nurse would assess in the dialysis client.
Choice D reason: Headache, deteriorating consciousness, and twitching indicate disequilibrium syndrome due to rapid osmotic shifts during hemodialysis. This aligns with neurological assessment, making it the correct set of manifestations the nurse would monitor in the client at risk.
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.
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