The effect of tension on perfusion of axial and random pattern flaps in foals.

This article studies the effect of tension on the blood supply of different types of skin flaps in foals’ abdomen, specifically axial pattern flaps and random pattern flaps.

Research Methodology

• The research was performed on seven foals, utilizing two types of skin flaps, which typically have different patterns of blood circulation: axial pattern and random pattern.
• Axial pattern skin flaps are defined as anatomical sections of skin that have a known and predictable blood supply, usually directed towards a specific blood vessel, while the random-pattern skin flap does not have a specific dedicated blood vessel.
• Flaps of dimensions 5 cm x 10 cm were surgically created on the abdomens of these foals, and then different levels of tension (up to 1500 g) were applied to these skin flaps.

Measurement and Results

• 7.5 cm away from the base of each flap, blood flow was measured during these incremental increases in tension.
• The study observed that at less than 1400 g of tension, the blood flowing within axial pattern flaps was four times more than that seen in random-pattern flaps.
• This led to the conclusion that in situations of tension of upto 1500 g, the blood flow in the axial pattern flaps was greater than baseline blood flow in the random pattern flaps.

Observations after Removal of Tension

• The study found that blood flow in the axial pattern flaps gradually increased after removal of applied tension, but still did not reach the baseline values.
• However, in the random pattern flaps, there was a temporary increase in blood flow noted just after the removal of tension. This increase could potentially be indicative of an accumulation of waste products and localized acidosis (an increase in acidity).
• It is important to note that regardless of these variations, all flaps eventually healed in their original locations without any complications reported.

Conclusion

• This research provides valuable insights into the interaction of external tension and blood flow across different types of skin flaps used in veterinary surgical procedures.
• Understanding these dynamics can inform better practices in achieving successful surgical outcomes in animal skin surgery.