Which statement best describes Severe Class IV CHF?

Which statement best describes Severe Class IV CHF?

• A. Mild heart failure with no mobility limitation.
• B. Unrelated condition.
• C. Severe heart failure; requires assistance for mobility.
• D. Heart attack.

Answer: (C)

This question tests how heart failure is functionally classified. In the NYHA system, the most severe category describes heart failure where symptoms are present even at rest and any activity worsens them; patients often cannot carry out ordinary activities and may need assistance with mobility. The statement that matches this level of severity—severe heart failure requiring help with mobility—best fits Class IV. The other options describe either mild limitation, an unrelated condition, or an acute myocardial event, which do not reflect the functional severity level of Class IV.

This question tests how heart failure is functionally classified. In the NYHA system, the most severe category describes heart failure where symptoms are present even at rest and any activity worsens them; patients often cannot carry out ordinary activities and may need assistance with mobility. The statement that matches this level of severity—severe heart failure requiring help with mobility—best fits Class IV. The other options describe either mild limitation, an unrelated condition, or an acute myocardial event, which do not reflect the functional severity level of Class IV.