Correct Answer: C

Rationale: After clamping the drainage tubing, the next step in obtaining a sterile urine specimen from a client with a Foley catheter is to clean the injection port cap of the drainage tubing with povidone-iodine solution. This cleaning step helps prevent contamination of the urine sample. Clamping another section of the tube isn't necessary and may not be a standard practice. Inserting a syringe into the injection port to aspirate urine isn't the correct step at this point. Withdrawing 10 mL of urine and discarding it before collecting the sample isn't appropriate and may lead to an inaccurate sample.

Correct Answer: A

Rationale:

Correct Answer: D

Rationale: The correct answer is the pulse rate of 115 beats/min. A rapid pulse rate is a sign of compensatory mechanisms in response to dehydration, indicating that the body is trying to deliver oxygen more efficiently. Oxygen therapy may be needed to support the increased oxygen demand. Tenting of skin on the back of the hand is a classic sign of dehydration due to decreased skin turgor. Increased urine osmolarity and weight loss are also indicators of dehydration, but they do not directly suggest a need for oxygen therapy.

Correct Answer: D

Rationale: In this scenario, the client is showing signs of a potential transfusion reaction, indicated by an increased respiratory rate. The nurse's initial action should be to slow down the infusion rate of the packed red blood cells to prevent further complications. Administering diphenhydramine or stopping the infusion should not be the first actions taken, as the priority is to ensure the client's safety and prevent adverse reactions. Continuing to monitor vital signs without taking immediate action to address the increased respiratory rate would delay appropriate intervention.

Correct Answer: A

Rationale: The correct answer is 'Airborne.' Varicella (chickenpox) is caused by the varicella-zoster virus, which spreads through the air by respiratory droplets. Therefore, placing the client on airborne precautions is necessary to prevent the transmission of the virus. Choice B, 'Standard precautions,' involve basic infection prevention measures that are used for all client care. Choice C, 'Contact precautions,' are used for diseases that spread by direct or indirect contact. Choice D, 'Droplet precautions,' are implemented for diseases transmitted by respiratory droplets that are larger than 5 microns.