How can one treat an intravenous-arterial injection?

The correct treatment for an intravenous-arterial injection involves the use of 1% procaine. This local anesthetic serves to alleviate the pain and provide temporary relief to the affected area while also helping to prevent further complications that may arise from inadvertent arterial injection.

When an intravenous-arterial injection occurs, there is a risk of tissue damage due to the introduction of substances meant for intravenous use directly into the arterial system. Procaine, being a local anesthetic, helps mitigate some of the potential adverse effects by blocking nerve conduction in the area, thus reducing pain and discomfort.

Other options like injecting saline may provide some dilution of the injected substance, but it lacks the anesthetic properties needed to address immediate pain. The use of epinephrine could exacerbate ischemia in a vessel that is already compromised and is not suitable in this context. Likewise, corticosteroids are generally used for inflammation and would not address immediate pain or complications stemming from the injection.

Overall, the use of 1% procaine is specifically targeted toward managing the acute effects of such an injection.