Hemodynamic changes in the microcirculation of DIEP flaps

Area of Science:

• Plastic Surgery
• Vascular Biology
• Microsurgery

Background:

• Perforator flaps are crucial in reconstructive surgery, particularly for breast reconstruction.
• Hemodynamic changes within perforator flaps, especially increased perforator artery blood velocity, are not well understood.
• Understanding these microcirculatory changes is key to optimizing flap viability.

Purpose of the Study:

• To investigate the effect of increased blood velocity in perforator arteries on the cutaneous microcirculation of deep inferior epigastric perforator (DIEP) flaps.
• To quantify hemodynamic changes in DIEP flaps during the reconstructive process.
• To determine if elevated microcirculatory velocity is a characteristic feature of successful perforator flaps.

Main Methods:

• A prospective study involving 26 patients undergoing unilateral immediate breast reconstruction using DIEP flaps.
• Utilized a 3-stage laser Doppler flowmetry approach: preoperative, immediate postoperative, and 3-month postoperative measurements.
• Employed statistical analysis (Friedman and Wilcoxon tests) to compare blood velocity measurements across stages.

Main Results:

• Demonstrated a statistically significant increase in blood velocity within the microcirculation of DIEP flaps in the immediate postoperative and 3-month follow-up stages compared to preoperative measurements (P < 0.01).
• Confirmed elevated blood flow velocity in the cutaneous microcirculation of these flaps.
• The findings highlight a consistent hemodynamic alteration in DIEP flaps post-reconstruction.

Conclusions:

• The increased blood velocity observed in the microcirculation of DIEP flaps represents a significant hemodynamic finding.
• This enhanced microcirculatory velocity may be a favorable rheologic characteristic contributing to the robustness and success of perforator flaps.
• Further research into flap hemodynamics can refine reconstructive surgical techniques and improve patient outcomes.