A client is hospitalized with heart failure (HF). Which intervention should the nurse implement to improve ventilation and reduce venous return?

Choice A reason: Administering oxygen per nasal cannula improves oxygenation but does not directly reduce venous return or improve ventilation mechanics. Oxygen therapy is supportive but not the primary intervention for relieving dyspnea in HF. Choice B reason: Increasing the client’s activity level would increase oxygen demand and venous return, worsening symptoms of HF. Activity should be carefully monitored and limited during acute decompensation. Choice C reason: Passive range of motion exercises help prevent complications of immobility but do not improve ventilation or reduce venous return. This intervention is beneficial for long-term care but not for immediate symptom relief. Choice D reason: Placing the client in high Fowler position is the most effective intervention. This position allows the diaphragm to descend more fully, improving lung expansion and ventilation. It also reduces venous return to the heart by pooling blood in the lower extremities, thereby decreasing preload and relieving pulmonary congestion. This intervention provides immediate relief of dyspnea in HF.