Correct Answer: B

Rationale: The correct action for the nurse to take to prevent contamination during a sterile dressing change is to restart the procedure if the sterile solution splashes onto the sterile field. Any contamination of the sterile field compromises the aseptic technique and increases the risk of infection for the client. Therefore, it is crucial to maintain the sterility of the field throughout the procedure. Choices A, C, and D are incorrect because proceeding with the dressing change, continuing without concern for minor splashes, or delegating the task to another nurse would all compromise the sterility of the procedure and increase the risk of infection for the client.

Correct Answer: A

Rationale: The correct answer is to advise the client to take the medication once daily at bedtime. Montelukast, a leukotriene modifier, is used for long-term therapy of asthma in adults and children, as well as to prevent exercise-induced bronchospasm. It should be taken once daily in the evening for optimal effectiveness. Choice B is incorrect because montelukast is not for acute management but for long-term therapy. Choice C is incorrect as there is no need to avoid dairy products while taking montelukast. Choice D is incorrect and potentially harmful advice; clients should never double up on doses if they forget to take a medication.

Correct Answer: C

Rationale: The correct task that the charge nurse should delegate to the LPN is to administer an oral antibiotic to a patient. LPNs are trained and permitted to administer medications orally under the supervision of a registered nurse. Initiating a care plan (Choice A) and completing an initial assessment (Choice D) are tasks that typically require higher-level nursing education and critical thinking skills, which are more suitable for registered nurses. Performing a complex wound dressing change (Choice B) involves specialized skills and assessment that are often within the scope of practice of registered nurses or wound care specialists.

Correct Answer: B

Rationale: Heparin therapy requires monitoring of activated partial thromboplastin time (APTT) to ensure therapeutic levels. APTT reflects the intrinsic pathway of the clotting cascade and is used to assess the effectiveness and safety of heparin therapy. Monitoring INR levels is more relevant for assessing warfarin therapy, not heparin. Blood glucose levels are monitored for clients with diabetes or those on medications affecting glucose levels. Liver function tests are used to assess liver health and are not directly related to monitoring heparin therapy.

Correct Answer: B

Rationale: The correct answer is to monitor signs of diarrhea when a client is prescribed azithromycin. Azithromycin is known to cause gastrointestinal side effects, particularly diarrhea. Monitoring for diarrhea is crucial to assess the client's response to the medication and to prevent complications such as dehydration. Monitoring liver function (choice A), blood glucose levels (choice C), and serum electrolytes (choice D) are not typically indicated specifically for clients prescribed azithromycin unless there are other specific reasons or conditions that warrant such monitoring.