Correct Answer: B

Rationale: In situations where the type of hazard is unknown, the healthcare provider should choose the highest level of protection equipment available. This helps ensure adequate protection against any potential hazards that may be present. Using only basic gloves and a mask (Choice A) may not provide sufficient protection if the hazard is more severe. Opting for respiratory protection only (Choice C) may leave other areas of the body vulnerable to exposure. While asking a colleague for advice (Choice D) is good practice in general, in urgent situations like mass-casualty incidents with unknown hazards, it is crucial to prioritize immediate protection by selecting the highest level of PPE.

Correct Answer: A

Rationale: The correct answer is A: PT and INR. Warfarin is an anticoagulant that affects the clotting mechanism by inhibiting vitamin K-dependent clotting factors. The PT (Prothrombin Time) and INR (International Normalized Ratio) are specific laboratory values used to monitor the effectiveness and safety of warfarin therapy. These values help healthcare providers adjust the warfarin dosage to maintain the desired level of anticoagulation. Choices B, C, and D are incorrect because blood glucose levels, complete blood count (CBC), and platelet count are not directly monitored to assess the effects of warfarin therapy.

Correct Answer: C

Rationale: The correct answer is Lyme disease. Lyme disease must be reported to the CDC as it is a nationally notifiable infectious disease. It is spread by ticks and can lead to significant health issues if not monitored. Measles, Hepatitis A, and Zika are also important infectious diseases, but in this case, Lyme disease is the appropriate choice based on the information provided.

Correct Answer: B

Rationale: The correct answer is B: 'It can cause bradycardia.' Digoxin can cause bradycardia as one of its side effects. Clients should be educated about this potential effect and instructed to monitor their heart rate before taking the medication. Choice A is incorrect because digoxin is more likely to cause arrhythmias than low blood pressure. Choice C is incorrect as calcium supplements can interfere with the absorption of digoxin. Choice D is incorrect as digoxin has various side effects, and clients should be aware of them.

Correct Answer: A

Rationale: Corrected Question: A healthcare professional is assessing a client for signs of stroke. Slurred speech is a common sign of stroke and should be assessed immediately. Choices B, C, and D are incorrect because increased appetite, elevated heart rate, and hyperactivity are not typical signs of a stroke.