After administering an injection, what should the nurse monitor for?

Monitoring for signs of infection at the injection site is crucial after administering an injection due to the potential risk of introducing pathogens into the body. Common signs of infection include redness, swelling, warmth, and purulent discharge, as well as systemic symptoms like fever or increased heart rate. Early detection of these signs allows for prompt intervention, which can prevent more serious complications from developing.

While it is important to assess the patient's emotional state, activity level, and diet, these factors are not as directly related to the immediate and tangible risks following an injection. The injection site is a localized area that requires closer observation for complications, particularly infections, which can result from improper technique or a compromised immune response. Proper monitoring of the injection site ensures patient safety and the effectiveness of the treatment administered.