Which method uses sprays or soaked gauze sponges for anesthesia?

The method that uses sprays or soaked gauze sponges for anesthesia is the splash block. This technique involves applying a local anesthetic directly to the tissues in the targeted area, often in a spray form or through the use of gauze that is moistened with anesthetic. This localized approach aims to provide pain relief in a specific area of the body, typically during minor procedures or in settings where more invasive forms of anesthesia are not required.

The splash block's effectiveness lies in its ability to deliver anesthesia directly where it is needed, minimizing systemic absorption and potential side effects. This can be especially useful in procedures involving mucous membranes or sensitive areas where traditional injections might be uncomfortable or impractical.

In contrast, other methods such as ring blocks involve injecting anesthetic around a specific area, local blocks involve injections to numb a larger area, and IV regional anesthesia (also known as Bier block) requires intravenous administration to induce anesthesia in a limb. Each method has its unique application and advantages, but when it comes to using sprays or soaked gauze, the splash block is the appropriate choice.