What is the last step when inserting an IV cannula?

Correct Answer: D

Rationale: The last step when inserting an IV cannula is to place a sterile dressing over the insertion site. This helps to protect the site from contamination and reduce the risk of infection. A sterile dressing also helps to maintain the integrity of the insertion site and prevent any foreign materials from entering the wound. Additionally, the dressing provides a barrier between the cannula site and the external environment, promoting healing and reducing the chance of complications.

Correct Answer: D

Rationale: Edrophonium (Tensilon) is a short-acting cholinesterase inhibitor used in the Tensilon test to aid in the diagnosis of myasthenia gravis. In patients with myasthenia gravis, there is a deficiency of acetylcholine at the neuromuscular junction, leading to muscle weakness. By inhibiting the breakdown of acetylcholine, edrophonium temporarily increases the availability of acetylcholine at the neuromuscular junction.

Correct Answer: C

Rationale: The nurse should assign the 14-year-old boy recovering from an appendectomy to Roommate C, the 15-year-old boy admitted with a vasoocclusive sickle cell crisis. This decision is based on providing similar age groups and conditions for mutual support and understanding. Both patients are teenagers and are experiencing health challenges that involve pain management and supportive care. This pairing can offer emotional and social benefits as they navigate their hospital stay together. It is important to consider factors like age, condition, and potential social interactions when assigning roommates in a healthcare setting to promote a positive environment for healing and recovery.

Correct Answer: D

Rationale: In newborns, intramuscular phytonadione (vitamin K) is typically administered into the vastus lateralis muscle. This muscle is located on the front of the thigh and is a commonly used site for IM injections in infants due to its large muscle mass, accessibility, and low risk of hitting major nerves or blood vessels. The vastus lateralis muscle is considered a safe and effective site for administering medications to newborns.

Correct Answer: D

Rationale: A. Symptoms of food poisoning can indeed include salivation (due to excess saliva production), cramping, nausea, vomiting, and diarrhea. These symptoms are common manifestations of foodborne illnesses caused by harmful bacteria or toxins present in contaminated food.