What is a common complication of Clostridium perfringens infections?

Gas gangrene is a significant complication associated with Clostridium perfringens infections. This bacterium is known for its ability to cause tissue necrosis and is often involved in wound infections, particularly in cases of deep tissue injuries or when there is a lack of blood supply.

Clostridium perfringens produces several toxins, including alpha-toxin, which damages cell membranes and leads to the rapid development of gas gangrene. This condition is characterized by the formation of gas within tissues, intense pain, swelling, and discoloration, ultimately resulting in severe damage to muscles and surrounding tissues if not treated promptly.

While the other choices represent infections and complications associated with different pathogens or conditions, they are not typical outcomes of Clostridium perfringens infections. Pneumonia is often related to respiratory pathogens, urinary tract infections commonly arise from Gram-negative bacteria, and gastroenteritis is typically associated with enteric pathogens, none of which directly correlate with the pathogenic mechanisms of Clostridium perfringens. Thus, gas gangrene stands out as the correct answer due to its direct association with this specific bacterium's infection profile.