Correct Answer: B

Rationale: The xiphoid process is a small, cartilaginous extension at the inferior end of the sternum. Placing the hands improperly during the Heimlich maneuver too close to this process can result in it breaking off and potentially causing damage to internal organs. Choices A and C are incorrect because the manubrium of the sternum and the coccyx are not in the area where the hands would typically be placed during the Heimlich maneuver.

Correct Answer: C

Rationale: The safety of infants in newborn nurseries is maintained by requiring parents to wear identification bracelets to identify themselves as the rightful parents. This practice minimizes the risk of mistakenly allowing an unauthorized individual to take a baby. In this scenario, since the nurse does not recognize the man and he lacks an identification bracelet, the appropriate action is to ask him to return to his room and bring the identification band. This step ensures the proper identity verification before allowing the man to take the baby. Calling security without first verifying the man's identity may escalate the situation unnecessarily. Checking the infant's chart alone does not confirm the man's identity. Allowing the man to take the baby without proper verification poses a safety risk to the infant.

Correct Answer: A

Rationale: During CPR, chest compressions should be applied at a rate of 100 compressions per minute in order to effectively circulate blood and oxygen to vital organs. Option A, '100 per minute,' is the correct answer as it aligns with the recommended compression rate in CPR guidelines. Option B, '60 per minute,' is incorrect as it is too slow and may not provide adequate circulation. Option C, 'As quickly as possible,' is vague and does not specify the recommended compression rate. Option D, '200 per minute,' is incorrect as it exceeds the recommended rate and may not be as effective in maintaining perfusion.

Correct Answer: D

Rationale: When transferring a client from a bed to a wheelchair, it is crucial to prioritize client safety. Locking both wheels on the wheelchair before moving the client is essential as it adds stability and prevents the wheelchair from moving unexpectedly during the transfer process. Placing the wheelchair at the foot of the bed allows for easier transfer, but ensuring the wheels are locked is more critical for safety. Maintaining a 12-inch space between the wheelchair and the bed is not as essential as ensuring wheel locks are engaged. While placing the footplates in the lowest position can enhance client comfort, it is not a safety measure that is as critical as securing the wheelchair by locking its wheels before the transfer.

Correct Answer: B

Rationale: The correct answer is 'Hands of healthcare workers.' MRSA is primarily transmitted via the unwashed hands of healthcare workers who can carry the Staphylococcus aureus bacterium from one patient to another. Shared needles, items in the healthcare environment, and blood transfusions are not the main routes of transmission for MRSA. Shared needles can transmit bloodborne pathogens, items in the healthcare environment can harbor bacteria but are not the primary mode for MRSA, and blood transfusions are not a common route for MRSA transmission.