Which of the following is NOT a common therapy for CHF?

High-dose oxygen therapy is not considered a common therapy for congestive heart failure (CHF). While oxygen can be administered to patients with CHF who are experiencing significant respiratory distress or hypoxemia, it is not a standard treatment for managing the condition itself.

In contrast, diuretics are commonly used in CHF to help reduce fluid overload, which is a hallmark of the condition. Inotropic agents may be employed to improve heart contractility and cardiac output in certain cases of CHF. The semi-Fowler's position is often used to provide comfort and aid in breathing by reducing pressure on the diaphragm, thereby improving respiratory function. Overall, high-dose oxygen therapy does not directly address the underlying mechanisms of CHF, making it less typical compared to the other options provided.