Which of the following factors can digitalis improve in patients with CHF?

Digitalis, primarily through the active compound digoxin, is a cardiac glycoside commonly used in the management of congestive heart failure (CHF). One of its significant effects is the improvement of left ventricular function. Digitalis enhances the contractility of the myocardium, which allows the heart to pump more efficiently and effectively. By increasing the force of contraction, it helps alleviate symptoms associated with heart failure and improves the overall cardiac output.

In patients with CHF, left ventricular function is crucial for maintaining proper circulation and ensuring that various organ systems receive adequate blood supply. The enhancement of this function through digitalis contributes to the improved exercise tolerance and reduced symptoms of heart failure, leading to a better quality of life for patients.

Other factors such as heart rate, kidney function, and respiratory rate are influenced by the use of digitalis but are not the primary focus. For example, while digitalis does have a tendency to slow the heart rate through its effects on the electrical conduction system of the heart, this is not its main therapeutic goal in CHF. Likewise, while improved cardiac function can indirectly support kidney function by improving renal perfusion, digitalis itself is not primarily used for that purpose. Respiratory rate may be affected due to changes in fluid status or comfort