Correct Answer: A

Rationale: The correct answer is A: 'Seek immediate medical assistance to evaluate the cause of these symptoms.' The symptoms described by the client, including nausea, dark-colored urine, and yellowish skin, are indicative of possible liver toxicity, a serious side effect of pioglitazone. Therefore, immediate medical evaluation is necessary to assess the severity of the condition and prevent further complications. Choices B, C, and D are incorrect: B advises discontinuing the medication without seeking immediate medical assistance, which could delay necessary treatment; C focuses solely on increasing fluid intake and monitoring urine color, overlooking the urgency of the situation; and D suggests continuing the medication when prompt evaluation is crucial in this scenario.

Correct Answer: A

Rationale: The correct answer is A: Electrocardiogram (ECG). An electrocardiogram should be performed first to assess for cardiac ischemia in a client with a history of CAD and chest pain. An ECG provides immediate information about the heart's electrical activity, helping to identify signs of ischemia or a heart attack. While other diagnostic tests like chest X-ray, arterial blood gases, and echocardiogram may also be necessary in the evaluation of chest pain, they do not provide the initial direct assessment of cardiac ischemia that an ECG does.

Correct Answer: D

Rationale: The correct action for the nurse to implement is to document the assessment data. In this scenario, the findings indicate that the partial rebreather mask is functioning correctly as the reservoir bag should not deflate completely during inspiration. Additionally, the client's respiratory rate of 14 breaths/minute falls within the normal range. There is no need to encourage the client to take deep breaths, as the respiratory rate is normal, and doing so may disrupt the client's breathing pattern. Removing the mask to deflate the bag or increasing the liter flow of oxygen are unnecessary actions based on the assessment findings.

Correct Answer: A

Rationale: In DKA, restoring fluid balance with sodium chloride is a priority to address the dehydration and electrolyte imbalances present in this condition. Choice B, preparing an emergency dose of glucagon, is incorrect because DKA is characterized by insulin deficiency, not glucagon deficiency. Choice C, determining the last time the client ate, is not the immediate priority in managing DKA. Choice D, checking urine for ketone bodies with a dipstick, may help confirm the diagnosis of DKA but is not the most critical intervention at this time.

Correct Answer: A

Rationale: The correct principle of oxygen administration to consider is to avoid administering oxygen at high levels for extended periods. High levels of oxygen for prolonged periods can lead to oxygen toxicity, especially in pediatric patients. Increasing the oxygen flow rate based on tachypnea may not be necessary and can potentially lead to oxygen toxicity. Gradually reducing oxygen levels after symptoms improve may compromise the child's oxygenation. While humidifying oxygen is important to prevent drying of mucous membranes, the primary concern in this case is to avoid high oxygen levels for an extended duration to prevent oxygen toxicity.