Flap Preconditioning by Electrical Stimulation as an Alternative to Surgical Delay: Experimental Study

Area of Science:

• Regenerative Medicine
• Surgical Innovation
• Tissue Engineering

Background:

• Partial flap failures are common, unpredictable complications in reconstructive surgery.
• Electrical stimulation is known to promote blood flow, angiogenesis, and reduce inflammation.
• Current methods like surgical delay have limitations in optimizing flap survival.

Purpose of the Study:

• To investigate the efficacy of preoperative electrical stimulation as an alternative to surgical delay for improving flap survival.
• To compare the effects of electrical stimulation on flap vascularity and survival rates against control and surgical delay groups.

Main Methods:

• Modified McFarlane flaps were created in 50 Sprague-Dawley rats.
• Groups included: control, surgical delay, preoperative electrical stimulation, electrically stimulated ischemic flap, and surgical delay plus electrical stimulation.
• Flap survival, blood flow, and vascularity (microangiography) were assessed at specific time points.

Main Results:

• The preconditioning by electrical stimulation group exhibited a significantly higher flap survival rate (P < 0.05).
• This group also demonstrated sustained blood flow post-procedure, unlike most other groups.
• Microangiography revealed enhanced vascular networks in the preconditioning by electrical stimulation group.

Conclusions:

• Preoperative electrical stimulation applied to the normal area before flap elevation significantly increases flap survival.
• This method is a promising alternative to surgical delay, offering superior improvements in flap vascularity and survival.
• Electrical stimulation represents a novel and effective strategy for mitigating flap failure in reconstructive surgery.