Experimental Study of Tumescence Injection to Provide Anesthesia Without Local Anesthetics.

Area of Science:

• Surgical Anesthesia
• Pain Management
• Tissue Engineering

Background:

• The tumescent technique, using dilute solutions, can achieve local anesthesia.
• The physical properties of the tumescence environment may contribute to anesthetic effects.
• Investigating the anesthetic potential of the tumescence environment independent of local anesthetic agents is crucial.

Purpose of the Study:

• To determine if the tumescence environment, created by a one-per-mil solution without local anesthetics, possesses local anesthetic properties.
• To evaluate the role of the tumescence environment in supporting local anesthesia.
• To compare pain responses in mice treated with varying tumescent solutions.

Main Methods:

• Fifty Swiss Webster mice were divided into five groups, including controls and groups receiving tumescent solutions with or without lidocaine and varying volumes.
• Local anesthetic effects were assessed using the formalin and tail immersion tests.
• Pain behaviors, such as paw licking duration and tail withdrawal latency, were measured and statistically analyzed.

Main Results:

• All intervention groups exhibited significantly reduced pain responses compared to controls, evidenced by longer tail withdrawal latency.
• Paw licking duration was not significantly reduced across groups compared to controls.
• The tumescent solution containing 0.2% lidocaine demonstrated the quickest onset of local anesthetic effect.

Conclusions:

• The tumescence environment alone can potentially induce a local anesthetic effect, as suggested by the tail immersion test results.
• This indicates that the physical characteristics of tumescence may contribute to pain reduction in surgical procedures.
• Further research is warranted to fully elucidate the mechanisms behind this phenomenon.