Correct Answer: B

Rationale: Beta-blockers work by blocking the effects of adrenaline on beta receptors in the body. One common adverse effect of beta-blockers is bradycardia, or a slowed heart rate. Since the patient is being prescribed a beta-blocker for migraine headaches, it is important for the nurse to monitor closely for signs and symptoms of bradycardia such as dizziness, fatigue, and fainting. Monitoring the heart rate regularly and reporting any significant decrease to the healthcare provider is essential to prevent complications associated with bradycardia. Compared to the other options, bradycardia is the most relevant adverse effect to monitor in a patient prescribed a beta-blocker.

Correct Answer: A

Rationale: A tension pneumothorax is a life-threatening condition where air accumulates in the pleural space and cannot escape, causing increased pressure in the chest cavity. This can lead to compression of the lung and major blood vessels, leading to inadequate oxygenation and circulation.

Correct Answer: B

Rationale: The nurse's best response to a patient expressing fear of the unknown regarding an upcoming surgical procedure is to provide the patient with accurate information about the surgical procedure and what to expect. This approach empowers the patient with knowledge and helps alleviate anxiety by demystifying the unknown. By educating the patient about the procedure, potential risks, and postoperative care, the nurse can help the patient feel more prepared and in control of the situation. It is crucial for healthcare providers to address patient fears with compassion, understanding, and information to support the patient through the surgical process.

Correct Answer: A

Rationale: Confirmability is the criteria of trustworthiness that refers to the degree to which the findings of a study are based on the data itself and not on the biases, motivations, or interests of the researchers. In this scenario, returning to the participants to confirm the accuracy of the emerged themes is a way to ensure the confirmability of the study findings. By involving the participants in the validation process, the researchers are seeking to verify that the themes identified truly reflect the experiences of the pregnant women in labor as reported by the participants. This practice enhances the credibility and trustworthiness of the study's findings by confirming their alignment with the participants' perspectives and experiences.

Correct Answer: E

Rationale: All of the statements (A-D) are true when discussing the testing of vision in infants and children separately from testing in adults. However, statement E is NOT true. The course of visual and cognitive development MUST be taken into account in evaluating infants and children's visual abilities. It is crucial to consider the stage of development a child is in when evaluating their vision, as their visual abilities can change rapidly during early childhood. Ignoring the course of development could lead to incorrect assessments and misunderstandings about the child's visual capabilities.