The staff nurse in a regional hospital is aware that a dose of parenteral ampicillin must be administered within how many hours after it has been mixed?

Correct Answer: B

Rationale: The correct administration time frame for a dose of parenteral ampicillin after it has been mixed is within 4 hours. This is based on the stability and compatibility of ampicillin when it is mixed and prepared for injection. Beyond 4 hours, the effectiveness and safety of the medication may be compromised due to potential degradation or contamination. It is crucial for healthcare providers to adhere to the recommended administration time frame to ensure the patient receives the full therapeutic benefits of the medication and to prevent any negative outcomes associated with the degradation of the drug.

Correct Answer: B

Rationale: Washing hands and forearms before and after a dressing change is crucial for maintaining proper hygiene and preventing the spread of infection. This practice helps to reduce the risk of introducing harmful microorganisms to the burn wounds, which could lead to complications. It is important for the nurse to wash their hands and forearms thoroughly using proper hand hygiene techniques before touching the child's wounds or applying topical medications. By following the principles of infection control, the nurse can help promote proper wound healing and prevent potential complications in the child's recovery process.

Correct Answer: B

Rationale: The psychological effect of being obese during adolescence often includes a poor body image. Adolescence is a critical period for body image development, and being obese can lead to negative perceptions about one's appearance and self-worth. Individuals who are obese may experience low self-esteem, perpetuated by societal stereotypes and stigmas surrounding body weight. This poor body image can contribute to mental health issues such as depression and anxiety, as well as impact social relationships and overall well-being during this crucial stage of development.

Correct Answer: C

Rationale: Driving in the car with the windows open is not a recommended action for someone with allergies to pollen. Keeping the windows closed while driving can help minimize exposure to pollen particles in the air. By driving with the windows open, the individual is increasing their exposure to pollen and not effectively controlling their allergy symptoms. Staying indoors on dry, windy days (Choice A), refusing to walk outside in the spring (Choice B), and working in the garden on sunny days (Choice D) are all actions that demonstrate understanding of how to control allergies to pollen by avoiding potential triggers.

Correct Answer: D

Rationale: Type 1 diabetes mellitus is characterized by the body's inability to produce insulin. Therefore, the mainstay of treatment for type 1 diabetes is insulin therapy. Insulin injections are necessary to replace the insulin that the body is unable to produce on its own. While physical exercise and dietary management are important components of managing diabetes, in the case of type 1 diabetes, insulin is an essential part of the treatment plan to control blood glucose levels effectively and prevent complications. Oral hypoglycemic agents, on the other hand, are typically used in the treatment of type 2 diabetes, where the body's insulin production may be insufficient or ineffective.