Final answer:
The statement by the patient with restrictive cardiomyopathy that indicates effective discharge teaching about self-management is the need to limit salt and fluid intake, even in hot weather.
Step-by-step explanation:
The statement by the patient with restrictive cardiomyopathy that indicates that the nurse's discharge teaching about self-management has been effective is option c: "I will need to limit my intake of salt and fluids even in hot weather."
Restrictive cardiomyopathy is a condition characterized by stiffening and thickening of the heart muscles, which impairs the heart's ability to fill with blood properly. Limiting salt and fluid intake is important for patients with restrictive cardiomyopathy as it helps reduce the workload on the heart and prevents fluid retention. This self-management strategy is therefore an indication that the patient understands the importance of managing their condition and following the nurse's instructions.