For which condition is a coude catheter typically used?

A coude catheter is specifically designed to aid in the insertion process when a patient has certain anatomical challenges, particularly related to the male anatomy or prostate issues. Its tapered tip allows for easier navigation around obstructions in the urinary tract, such as an enlarged prostate, which can occur in conditions like benign prostatic hyperplasia. This makes it an ideal choice for patients experiencing urinary retention or difficulty voiding due to prostate enlargement or other obstructions.

In contrast, the other conditions listed do not typically require the specialized design of a coude catheter. For diabetes mellitus, standard catheterization methods are usually sufficient, as this condition does not inherently involve urinary tract obstruction. Similarly, urinary tract infections and kidney stones may necessitate different types of management or catheterization techniques, but they do not specifically indicate the use of a coude catheter. Therefore, the use of a coude catheter is primarily associated with prostate issues, making it the appropriate selection in this context.