Constant infusion fluorometry to predict flap survival

Area of Science:

• Biomedical Engineering
• Surgical Research
• Diagnostic Imaging

Background:

• Surgical flap survival is crucial for reconstructive surgery.
• Assessing flap viability often relies on subjective methods.
• Objective quantitative methods are needed for reliable prediction.

Purpose of the Study:

• To evaluate fluorometry for predicting surgical flap survival in a canine model.
• To compare the efficacy of wash-in and wash-out fluorometric measurements.
• To determine the sensitivity and specificity of fluorometry in predicting flap necrosis.

Main Methods:

• A canine model with graded flap ischemia was used.
• Sodium fluorescein was administered intravenously.
• Quantitative fluorescence measurements were taken at multiple flap sites.
• Wash-in slopes and wash-out clearances were analyzed and correlated with flap survival at seven days.

Main Results:

• Both wash-in and wash-out fluorometry demonstrated high sensitivity and specificity in predicting flap survival.
• Sensitivities of 100% (wash-in) and 95% (wash-out) were observed.
• Specificities of 97% (wash-in) and 86% (wash-out) were achieved.
• The wash-in method showed superior performance and was faster.

Conclusions:

• Fluorometry is a reliable method for predicting surgical flap survival.
• The wash-in fluorometry technique is efficient and accurate.
• This method can aid in surgical decision-making and improve patient outcomes.