[Comparative study of the hyperbaric hyperoxygenation in ischemic colonic loops in rats]

Area of Science:

• Gastroenterology
• Surgical Research
• Biomedical Engineering

Background:

• Intestinal ischemia can lead to significant tissue damage and compromise mechanical integrity.
• Hyperbaric oxygen therapy (HBOT) is explored for its potential to improve tissue oxygenation and healing.
• Understanding HBOT's effect on ischemic tissue resistance is crucial for clinical applications.

Purpose of the Study:

• To evaluate the impact of hyperbaric oxygen therapy on the mechanical resistance of ischemic rat colon.
• To analyze the efficacy of HBOT in mitigating tissue damage following induced intestinal ischemia.

Main Methods:

• Eighty rats were divided into four groups based on the severity of induced colon ischemia.
• Each group was further divided into subgroups receiving hyperbaric oxygen (100% O2 at 2 ATA for 120 min daily for 4 days) or standard air.
• Mechanical resistance was assessed using a liquid distension pressure test on the fifth post-operative day.

Main Results:

• A statistically significant difference in mechanical resistance was observed among the groups based on the degree of ischemia (p=0.0001).
• However, no significant difference in mechanical resistance was found between the hyperbaric oxygen (CC) and standard air (SC) subgroups (p=0.3461).

Conclusions:

• Hyperbaric oxygen therapy did not demonstrate a significant improvement in the mechanical resistance of induced ischemic colic loops in rats.
• The findings suggest HBOT may not be an effective intervention for improving the structural integrity of ischemic colonic tissue in this model.