Standardized photoelectric technique as routine method for selection of amputation level

Area of Science:

• Vascular Surgery
• Medical Devices
• Diagnostic Techniques

Background:

• Lower extremity amputations are often necessary for patients with critical limb ischemia due to gangrene.
• Selecting the appropriate amputation level is crucial for successful wound healing and patient outcomes.
• Traditional methods for assessing tissue perfusion can be invasive or time-consuming.

Purpose of the Study:

• To evaluate a novel standardized photoelectric technique for measuring local skin perfusion pressure (SPP).
• To determine the efficacy of SPP measurements in selecting the optimal level for lower extremity amputations.
• To compare the results of the photoelectric technique with established methods like isotope washout.

Main Methods:

• A prospective study involving 42 patients undergoing 45 lower extremity amputations over 11 months.
• Preoperative measurement of local skin perfusion pressure (SPP) using a standardized photoelectric technique.
• Amputation level selection was guided by SPP measurements, with comparisons made to isotope washout technique data.

Main Results:

• An overall amputation wound healing rate of 89% was achieved.
• 69% of amputations were performed below-knee, indicating successful level selection.
• Healing rates correlated with SPP levels, mirroring results from the isotope washout technique.
• The photoelectric SPP technique demonstrated simplicity, speed, and minimal patient discomfort.

Conclusions:

• The standardized photoelectric technique for SPP measurement is a reliable and practical tool for guiding lower extremity amputation level selection.
• This method offers comparable accuracy to the isotope washout technique with significant advantages in ease of use and patient comfort.
• Optimized amputation level selection using SPP measurement contributes to high wound healing rates in patients with lower extremity gangrene.