Respiratory Muscle Contraction Characteristics and Potential Mechanisms in Severely Burned Rats.

This article focuses on the evaluation of diaphragm dysfunction following severe burn injury using a rat model with 50% total body surface area (TBSA) burns. The study demonstrates that burn injury leads to significant impairments in diaphragm contractile force, transdiaphragmatic pressure, diaphragm thickness, excursion, and increased fatigue susceptibility, both in vivo and in vitro. Additionally, the research identifies increased protein oxidative stress, measured by protein carbonyl content, and decreased adenosine triphosphate (ATP) levels in the diaphragm as potential mechanisms contributing to this dysfunction. These findings provide a foundation for further investigation into therapeutic strategies aimed at mitigating respiratory muscle impairment in burn patients.