A nurse is collecting data from a client who has left sided heart failure. For which of the following findings should the nurse notify the provider?

A productive cough with pink, frothy sputum is indicative of pulmonary edema, which is a serious manifestation of left-sided heart failure. It suggests fluid accumulation in the lungs, impairing gas exchange and oxygenation. Prompt notification of the provider is crucial for appropriate intervention and management of the client's condition.