Correct Answer: C

Rationale: Assessing the mental status of the patient is the PRIORITY nursing action to determine the patient's ability to concentrate and focus. This assessment includes evaluating the patient's level of alertness, orientation, memory, thought processes, and mood. By observing the patient's mental status, the nurse can gain valuable information about the patient's cognitive function, attention span, and ability to concentrate. This assessment will help guide further interventions and care planning for the patient. Asking for academic performance or conducting paper and pencil tests may be useful tools to assess concentration and focus, but they should come after a comprehensive evaluation of the patient's mental status. Referring the patient to a psychiatrist may be necessary based on the assessment findings, but it should not be the first step in determining the patient's ability to concentrate and focus.

Correct Answer: C

Rationale: A discectomy is a surgical procedure commonly performed to decompress the nerve root by removing a portion of the herniated disc that is pressing on the nerve. In cases of herniated discs causing radicular symptoms (such as pain radiating down the leg), a discectomy can help alleviate the compression on the nerve, reduce symptoms, and improve the patient's condition. This procedure involves removing the portion of the disc that is herniated or bulging out to relieve pressure on the nerve root, allowing for improved function and reduced pain. Spinal fusion, laminectomy, and foraminotomy are other surgical procedures that are not typically performed for the direct decompression of the nerve root in cases of herniated discs at a specific level like the L5-S1 level.

Correct Answer: D

Rationale: Administering oxygen inhalation is the priority nursing action for a patient presenting with clinical manifestations related to endocrine disorders. Patients with hyperthyroidism, Cushing syndrome, and hypothyroidism can all experience respiratory distress due to various reasons such as thyroid storm, adrenal crisis, or myxedema coma. Oxygen inhalation helps improve oxygenation and tissue perfusion, providing immediate support to the patient's respiratory system. It is crucial to ensure adequate oxygenation before addressing other assessments or interventions. Once the patient's breathing is stabilized, further assessments and treatments can be initiated as necessary.

Correct Answer: D

Rationale: The most appropriate oxygen delivery device for a patient with chronic respiratory failure secondary to severe restrictive lung disease requiring continuous supplemental oxygen is a non-rebreather mask. A non-rebreather mask is designed to deliver high-flow oxygen and is typically used for short-term medical treatment in emergency situations or for critically ill patients. It is ideal for providing the highest concentration of oxygen available for inhalation, making it suitable for patients with severe hypoxemia.

Correct Answer: A

Rationale: The purpose of a tracheostomy is to establish an artificial airway in the trachea through a surgical procedure. This is done to bypass obstructions in the upper airway, assist with breathing, or facilitate the removal of secretions from the lungs. A tracheostomy helps in maintaining a clear and secure airway for patients who have difficulty breathing or require long-term mechanical ventilation support.