The nurse is teaching patients about self-injection of insulin. Which statement is true regarding injection sites?

Choice A rationale: The abdomen is actually the preferred site for insulin injections due to its consistent and rapid absorption rate compared to other sites. While absorption can vary slightly depending on the specific location within the abdomen, it is considered more predictable than other areas. Avoiding the abdomen would eliminate a prime injection site, which would make proper site rotation more difficult to achieve. Choice B rationale: Choosing a different site at random for each injection is not the recommended approach. While it ensures rotation, it can make it difficult to monitor for site reactions or track the effectiveness of different injection sites. A systematic rotation strategy is preferred to ensure that all areas are used appropriately and consistently over time, preventing tissue damage. Choice C rationale: Giving the injection in the same area each time, or even in the same exact spot, is the primary cause of lipohypertrophy and lipoatrophy. Repeated trauma to the same tissue leads to fibrous tissue formation and fat deposition or breakdown, which can significantly alter insulin absorption, making glycemic control unpredictable and increasing the risk of both hypoglycemia and hyperglycemia. Choice D rationale: Rotating sites within the same anatomical location, such as the abdomen, for approximately one week before moving to a new location (e.g., the thigh or arm), is the recommended practice. This systematic approach ensures that tissue at the injection sites has time to heal, preventing the development of lipodystrophies. It also helps maintain consistent insulin absorption.