Correct Answer: A

Rationale: The correct answer is A because shaking the inhaler before each use ensures that the medication is properly mixed, which is essential for effective administration. This action helps to disperse the medication evenly, enhancing its efficacy when inhaled. Proper mixing through shaking prevents inconsistent dosing and ensures that the client receives the correct amount of medication with each use.

Correct Answer: D

Rationale: Having a second nurse witness the disposal of any unused portion of a controlled substance is a legal requirement to ensure proper disposal, prevent diversion, and maintain accountability. This practice helps in reducing the risk of misuse or unauthorized access to controlled substances, enhancing patient safety, and complying with legal regulations and standards.

Correct Answer: A

Rationale: Encouraging pursed-lip breathing is essential for clients with COPD as it aids in improving ventilation and gas exchange. This technique helps keep the airways open longer during exhalation, preventing air trapping and promoting more effective breathing. Administering oxygen, placing the client in a supine position, or restricting fluid intake are not primary interventions for managing COPD and may not address the specific respiratory needs of the client.

Correct Answer: C

Rationale: The primary benefit of using electronic health records (EHRs) in healthcare is that they improve the accuracy and completeness of patient information. By utilizing EHRs, healthcare providers have access to more reliable and up-to-date patient data, which leads to better patient care outcomes. This improved accuracy enables healthcare professionals to make better-informed decisions and provide more effective treatments, ultimately enhancing patient safety and quality of care.

Correct Answer: B

Rationale: Keeping the bed in the lowest position is crucial for ensuring the safety of the client during a seizure. Lowering the bed reduces the risk of injury if the client falls during a seizure episode. It is important not to restrain the client during a seizure as it can lead to further injury. Placing a padded tongue depressor at the bedside is not appropriate and can pose a risk of injury if used incorrectly. Keeping the lights dim in the client's room is not directly related to safety during a seizure and is not a standard precaution.