A random-pattern skin-flap model in streptozotocin diabetic rats

Area of Science:

• Biomedical Research
• Surgical Outcomes
• Diabetic Complications

Background:

• Flap operations are common in diabetic patients.
• Limited experimental data exists on diabetes' impact on flap survival.
• This study investigates diabetes mellitus' effects on random-pattern skin flaps in rats.

Purpose of the Study:

• To evaluate the impact of diabetes mellitus on the viability of random-pattern skin flaps in a rat model.
• To determine the duration of diabetes required to observe significant deleterious effects on flap survival.

Main Methods:

• Utilized 72 rats, divided into diabetic (experimental) and nondiabetic (control) groups.
• Created a random-pattern skin-flap model in rats.
• Measured viable flap area after varying diabetic periods (2, 4, and 8 weeks).

Main Results:

• Mean flap survival was 51.40% (2 weeks), 48.20% (4 weeks), and 36.70% (8 weeks) in diabetic rats.
• Control group showed significantly higher flap survival (65.87%) compared to 4- and 8-week diabetic groups.
• Flap survival decreased significantly with longer diabetes duration (8 weeks vs. 2 or 4 weeks).

Conclusions:

• A 4-week diabetic duration in rats is sufficient to show negative effects on flap viability.
• Significant detrimental effects on flap survival are evident after 8 weeks of diabetes.
• A minimum of 8 weeks of diabetes is recommended for future studies to yield definitive results on flap viability.