What is the expected onset of action for regular insulin administered intravenously?

When considering the onset of action for regular insulin administered intravenously, it is crucial to understand how insulin is absorbed and utilized in the body. Regular insulin, when given intravenously, has a rapid onset due to its direct entry into the bloodstream, bypassing the absorption phase that occurs with subcutaneous injections.

The expected onset of action for intravenous regular insulin is approximately 10 minutes. This quicker onset is important in clinical settings where rapid control of blood glucose levels is necessary, such as in hospital emergencies or during surgical procedures.

In contrast, the other options represent intervals that are either shorter or longer than the medically observed onset time. Recognizing this timeline is essential for healthcare professionals when managing insulin therapy effectively and responding to acute changes in a patient's glucose levels.