Correct Answer: B

Rationale: The older brother's withdrawal likely indicates emotional trauma or stress from the near-drowning event. Asking how he felt provides an opportunity for emotional support and allows the child to express feelings that may need addressing. Involving him in supporting the child may be overwhelming and not address his emotional needs directly. Asking the parents for more information may not allow the older brother to express his own feelings. Simply reassuring him that everything is fine now may dismiss his emotional experience without providing a chance for him to process his feelings.

Correct Answer: B

Rationale: The correct answer is B: Prothrombin time (PT) and International Normalized Ratio (INR). These lab values are crucial for monitoring the effectiveness of warfarin, an anticoagulant medication. PT measures the time it takes for blood to clot, while INR standardizes these results. Ensuring the client's PT/INR levels are within the therapeutic range is essential to prevent clotting or excessive bleeding. Choices A, C, and D are incorrect as they are not directly related to monitoring warfarin therapy in a client with atrial fibrillation.

Correct Answer: A

Rationale: The correct answer is A: Administer a bronchodilator immediately. Wheezing in a client with asthma indicates bronchoconstriction, which can compromise airflow. Administering a bronchodilator is the priority intervention as it helps to open the airways, relieve bronchoconstriction, and improve breathing. Increasing the oxygen flow rate (choice B) may be necessary but is not the priority when the airways are constricted. Performing a chest x-ray (choice C) is not the immediate action needed in this situation. Placing the client in a high Fowler's position (choice D) may provide some relief, but administering a bronchodilator to address the bronchoconstriction is the priority intervention.

Correct Answer: B

Rationale: The correct answer is to document the assessment data. In a partial rebreather mask, it is normal for the oxygen reservoir bag not to deflate completely during inspiration. Additionally, a respiratory rate of 14 breaths/minute falls within the normal range. Therefore, these findings indicate that the mask is functioning as intended. Removing the mask immediately is unnecessary as there are no signs of distress. Increasing the oxygen flow or adjusting the respiratory rate setting is not warranted based on the assessment findings, as they are within normal parameters.

Correct Answer: D

Rationale: In clients with DVT, assessing for pulmonary embolism is crucial as a clot in the lungs can be life-threatening. Sudden shortness of breath or chest pain are key signs of a pulmonary embolism. While monitoring for signs of bleeding is important due to anticoagulant therapy, the immediate concern is detecting a potential pulmonary embolism. Monitoring vital signs and pain in the affected limb are relevant aspects of care but are not as urgent as assessing for pulmonary embolism in this scenario.