The nurse is evaluating a client diagnosed with heart failure, who reports severe, persistent symptoms while at rest. Which functional class applies to this client?

A) Class I
B) Class II
C) Class III
D) Class IV

Heart Failure

A chronic condition where the heart is unable to pump sufficient blood to meet the body's needs for blood and oxygen.

Functional Class

A system of categorizing a patient's level of heart failure, based on their symptoms and ability to perform daily activities.

Persistent Symptoms

Continued signs or indications of a disease or condition that withstand standard treatments over an extended period.